diff --git a/modules/thermal_hydraulics/doc/content/modules/thermal_hydraulics/component_groups/heat_structure_2d_usage.md.template b/modules/thermal_hydraulics/doc/content/modules/thermal_hydraulics/component_groups/heat_structure_2d_usage.md.template
index 8e068574b5ed..ad3d5769aa4a 100644
--- a/modules/thermal_hydraulics/doc/content/modules/thermal_hydraulics/component_groups/heat_structure_2d_usage.md.template
+++ b/modules/thermal_hydraulics/doc/content/modules/thermal_hydraulics/component_groups/heat_structure_2d_usage.md.template
@@ -3,17 +3,21 @@ The parameters
 [!param](/Components/{{name}}/widths), and
 [!param](/Components/{{name}}/n_part_elems) are discussed in [#mesh_radial].
 
-The parameter [!param](/Components/{{name}}/materials) specifies the names of
-[HeatStructureMaterials](HeatStructureMaterials/index.md) objects to use in
-each region. Each entry in this parameter corresponds to the entries in the parameters
-[!param](/Components/{{name}}/names), [!param](/Components/{{name}}/widths),
-and [!param](/Components/{{name}}/n_part_elems).
-Note that this parameter is optional; if omitted, the user must
-create [Materials](Materials/index.md) supplying the following material properties
-on all blocks (see [#mesh_blocks]) of the heat structure mesh:
+There are two options for specification of the thermal properties on the heat structure:
 
-| Material Property | Symbol | Description |
-| :- | :- | :- |
-| `density` | $\rho$ | Density \[kg/m$^3$\] |
-| `specific_heat` | $c_p$ | Specific heat capacity \[J/(kg-K)\] |
-| `thermal_conductivity` | $k$ | Thermal conductivity \[W/(m-K)\] |
+- Create a [SolidProperties](syntax/SolidProperties/index.md) object for each unique heat structure material,
+  and then provide [!param](/Components/{{name}}/solid_properties) which corresponds 
+  to the `SolidProperties` object to use in each transverse region  (each entry corresponds 
+  to the equally indexed entry in [!param](/Components/{{name}}/names))
+  and [!param](/Components/{{name}}/solid_properties_T_ref), which provides
+  the temperatures at which to evaluate the densities, since a constant density
+  is to be used in each region, due to heat structures having a non-deformable
+  mesh.
+- Create [Materials](Materials/index.md) object(s) supplying the following material properties
+  on all blocks (see [#mesh_blocks]) of the heat structure mesh:
+
+  | Material Property | Symbol | Description |
+  | :- | :- | :- |
+  | `density` | $\rho$ | Density \[kg/m$^3$\] |
+  | `specific_heat` | $c_p$ | Specific heat capacity \[J/(kg-K)\] |
+  | `thermal_conductivity` | $k$ | Thermal conductivity \[W/(m-K)\] |
diff --git a/modules/thermal_hydraulics/doc/content/modules/thermal_hydraulics/tutorials/single_phase_flow/step02.md b/modules/thermal_hydraulics/doc/content/modules/thermal_hydraulics/tutorials/single_phase_flow/step02.md
index 33be5bda7936..ad00da057c9d 100644
--- a/modules/thermal_hydraulics/doc/content/modules/thermal_hydraulics/tutorials/single_phase_flow/step02.md
+++ b/modules/thermal_hydraulics/doc/content/modules/thermal_hydraulics/tutorials/single_phase_flow/step02.md
@@ -32,14 +32,14 @@ tot_power = 2000 # W
 ```
 
 
-## Heat Structure Materials
+## Solid Properties
 
 To set up a heat conduction, we will need to define a solid material used in the block with
 heat conduction.
-To do that, we put the following block into a top-level [HeatStructureMaterials](HeatStructureMaterials/index.md) block:
+To do that, we put the following block into a top-level [SolidProperties](syntax/SolidProperties/index.md) block:
 
 !listing thermal_hydraulics/tutorials/single_phase_flow/02_core.i
-         block=HeatStructureMaterials/steel
+         block=SolidProperties/steel
          link=False
 
 where `rho`, `k`, and `cp` are density, thermal conductivity, and specific heat, respectively.
diff --git a/modules/thermal_hydraulics/doc/content/modules/thermal_hydraulics/tutorials/single_phase_flow/step06.md b/modules/thermal_hydraulics/doc/content/modules/thermal_hydraulics/tutorials/single_phase_flow/step06.md
index 65eac58d4da9..4d0587b44bfa 100644
--- a/modules/thermal_hydraulics/doc/content/modules/thermal_hydraulics/tutorials/single_phase_flow/step06.md
+++ b/modules/thermal_hydraulics/doc/content/modules/thermal_hydraulics/tutorials/single_phase_flow/step06.md
@@ -76,7 +76,7 @@ To accomplish this, we define the Prandtl number using an [ADPrandtlNumberMateri
 
 !listing thermal_hydraulics/tutorials/single_phase_flow/06_custom_closures.i
          start=Pr_mat
-         end=HeatStructureMaterials
+         end=SolidProperties
          link=False
 
 !content pagination previous=tutorials/single_phase_flow/step05.md
diff --git a/modules/thermal_hydraulics/include/components/HeatStructureBase.h b/modules/thermal_hydraulics/include/components/HeatStructureBase.h
index 8e66dba9f55e..8a74ff5694d9 100644
--- a/modules/thermal_hydraulics/include/components/HeatStructureBase.h
+++ b/modules/thermal_hydraulics/include/components/HeatStructureBase.h
@@ -55,6 +55,17 @@ class HeatStructureBase : public Component2D, public HeatStructureInterface
   void
   loadMaterial(InputParameters & pars, const std::string & par, const std::string & material_name);
 
+  /**
+   * Adds a ADConstantDensityThermalSolidPropertiesMaterial for a heat structure region
+   *
+   * @param[in] sp_name   Solid properties object name
+   * @param[in] T_ref     Constant density reference temperature
+   * @param[in] i_region  Heat structure region index
+   */
+  void addConstantDensitySolidPropertiesMaterial(const UserObjectName & sp_name,
+                                                 const Real & T_ref,
+                                                 unsigned int i_region) const;
+
   /// Map from block name to block index
   std::map<std::string, unsigned int> _name_index;
   /// Material names
diff --git a/modules/thermal_hydraulics/src/components/HeatStructureBase.C b/modules/thermal_hydraulics/src/components/HeatStructureBase.C
index 686757cb83da..7f35310ca49a 100644
--- a/modules/thermal_hydraulics/src/components/HeatStructureBase.C
+++ b/modules/thermal_hydraulics/src/components/HeatStructureBase.C
@@ -88,4 +88,30 @@ HeatStructureBase::addMooseObjects()
         comp->connectObject(rho_fn->parameters(), rho_fn->name(), "rho", "value");
     }
   }
+
+  if (isParamValid("solid_properties"))
+  {
+    const auto sp_names = getParam<std::vector<UserObjectName>>("solid_properties");
+    const auto T_ref = getParam<std::vector<Real>>("solid_properties_T_ref");
+    for (unsigned int i = 0; i < sp_names.size(); i++)
+      addConstantDensitySolidPropertiesMaterial(sp_names[i], T_ref[i], i);
+  }
+}
+
+void
+HeatStructureBase::addConstantDensitySolidPropertiesMaterial(const UserObjectName & sp_name,
+                                                             const Real & T_ref,
+                                                             unsigned int i_region) const
+{
+  const auto blocks = getSubdomainNames();
+  const auto region_names = getNames();
+
+  const std::string class_name = "ADConstantDensityThermalSolidPropertiesMaterial";
+  InputParameters params = _factory.getValidParams(class_name);
+  params.set<std::vector<SubdomainName>>("block") = {blocks[i_region]};
+  params.set<std::vector<VariableName>>("temperature") = {HeatConductionModel::TEMPERATURE};
+  params.set<UserObjectName>("sp") = sp_name;
+  params.set<Real>("T_ref") = T_ref;
+  getTHMProblem().addMaterial(
+      class_name, genName(name(), class_name, region_names[i_region]), params);
 }
diff --git a/modules/thermal_hydraulics/src/components/HeatStructureCylindrical.C b/modules/thermal_hydraulics/src/components/HeatStructureCylindrical.C
index 4744346f8e17..4945eb7f6aab 100644
--- a/modules/thermal_hydraulics/src/components/HeatStructureCylindrical.C
+++ b/modules/thermal_hydraulics/src/components/HeatStructureCylindrical.C
@@ -20,7 +20,20 @@ HeatStructureCylindrical::validParams()
   params.addRequiredParam<std::vector<Real>>("widths", "Width of each radial region [m]");
   params.addRequiredParam<std::vector<unsigned int>>("n_part_elems",
                                                      "Number of elements of each radial region");
-  params.addParam<std::vector<std::string>>("materials", "Material name for each radial region");
+  params.addDeprecatedParam<std::vector<std::string>>(
+      "materials",
+      "Material name for each transverse region",
+      "HeatStructureMaterials are deprecated. Please make corresponding SolidProperties objects "
+      "and replace the heat structure parameter 'materials' with the parameters 'solid_properties' "
+      "and 'solid_properties_T_ref'. See heat structure documentation for more information.");
+  params.addParam<std::vector<UserObjectName>>(
+      "solid_properties", "Solid properties object name for each radial region");
+  params.addParam<std::vector<Real>>(
+      "solid_properties_T_ref",
+      {},
+      "Density reference temperatures for each radial region. This is required if "
+      "'solid_properties' is provided. The density in each region will be a constant value "
+      "computed by evaluating the density function at the reference temperature.");
   params.addParam<Real>("num_rods", 1.0, "Number of rods represented by this heat structure");
   params.addParam<Real>("inner_radius", 0., "Inner radius of the heat structure [m]");
 
@@ -71,4 +84,10 @@ HeatStructureCylindrical::check() const
   checkEqualSize<std::string, Real>("names", "widths");
   if (isParamValid("materials"))
     checkEqualSize<std::string, std::string>("names", "materials");
+  if (isParamValid("solid_properties"))
+  {
+    checkEqualSize<UserObjectName, std::string>("solid_properties", "names");
+    checkEqualSize<UserObjectName, Real>("solid_properties", "solid_properties_T_ref");
+  }
+  checkMutuallyExclusiveParameters({"materials", "solid_properties"}, false);
 }
diff --git a/modules/thermal_hydraulics/src/components/HeatStructurePlate.C b/modules/thermal_hydraulics/src/components/HeatStructurePlate.C
index 314ed2b52660..5871f0b8a167 100644
--- a/modules/thermal_hydraulics/src/components/HeatStructurePlate.C
+++ b/modules/thermal_hydraulics/src/components/HeatStructurePlate.C
@@ -20,8 +20,20 @@ HeatStructurePlate::validParams()
   params.addRequiredParam<std::vector<Real>>("widths", "Width of each transverse region [m]");
   params.addRequiredParam<std::vector<unsigned int>>(
       "n_part_elems", "Number of elements of each transverse region");
-  params.addParam<std::vector<std::string>>("materials",
-                                            "Material name for each transverse region");
+  params.addDeprecatedParam<std::vector<std::string>>(
+      "materials",
+      "Material name for each transverse region",
+      "HeatStructureMaterials are deprecated. Please make corresponding SolidProperties objects "
+      "and replace the heat structure parameter 'materials' with the parameters 'solid_properties' "
+      "and 'solid_properties_T_ref'. See heat structure documentation for more information.");
+  params.addParam<std::vector<UserObjectName>>(
+      "solid_properties", "Solid properties object name for each radial region");
+  params.addParam<std::vector<Real>>(
+      "solid_properties_T_ref",
+      {},
+      "Density reference temperatures for each radial region. This is required if "
+      "'solid_properties' is provided. The density in each region will be a constant value "
+      "computed by evaluating the density function at the reference temperature.");
   params.addParam<Real>("num_rods", 1.0, "Number of rods represented by this heat structure");
   params.addRequiredParam<Real>("depth", "Dimension of plate fuel in the third direction [m]");
 
@@ -66,6 +78,12 @@ HeatStructurePlate::check() const
   checkEqualSize<std::string, Real>("names", "widths");
   if (isParamValid("materials"))
     checkEqualSize<std::string, std::string>("names", "materials");
+  if (isParamValid("solid_properties"))
+  {
+    checkEqualSize<UserObjectName, std::string>("solid_properties", "names");
+    checkEqualSize<UserObjectName, Real>("solid_properties", "solid_properties_T_ref");
+  }
+  checkMutuallyExclusiveParameters({"materials", "solid_properties"}, false);
 }
 
 Real
diff --git a/modules/thermal_hydraulics/src/materials/ADSolidMaterial.C b/modules/thermal_hydraulics/src/materials/ADSolidMaterial.C
index 72b30e0e298d..0b8936786c90 100644
--- a/modules/thermal_hydraulics/src/materials/ADSolidMaterial.C
+++ b/modules/thermal_hydraulics/src/materials/ADSolidMaterial.C
@@ -10,7 +10,7 @@
 #include "ADSolidMaterial.h"
 #include "HeatConductionModel.h"
 
-registerMooseObject("ThermalHydraulicsApp", ADSolidMaterial);
+registerMooseObjectDeprecated("ThermalHydraulicsApp", ADSolidMaterial, "04/31/2024 24:00");
 
 InputParameters
 ADSolidMaterial::validParams()
@@ -33,6 +33,9 @@ ADSolidMaterial::ADSolidMaterial(const InputParameters & parameters)
     _temp(adCoupledValue("T")),
     _props(getUserObject<SolidMaterialProperties>("properties"))
 {
+  mooseDeprecated(
+      "Heat structure materials are deprecated in favor of SolidProperties objects, so this "
+      "Material should no longer be used. See heat structure documentation for more information.");
 }
 
 void
diff --git a/modules/thermal_hydraulics/src/userobjects/SolidMaterialProperties.C b/modules/thermal_hydraulics/src/userobjects/SolidMaterialProperties.C
index 1301d5fa3d28..98e4cac36b20 100644
--- a/modules/thermal_hydraulics/src/userobjects/SolidMaterialProperties.C
+++ b/modules/thermal_hydraulics/src/userobjects/SolidMaterialProperties.C
@@ -9,7 +9,7 @@
 
 #include "SolidMaterialProperties.h"
 
-registerMooseObject("ThermalHydraulicsApp", SolidMaterialProperties);
+registerMooseObjectDeprecated("ThermalHydraulicsApp", SolidMaterialProperties, "04/31/2024 24:00");
 
 InputParameters
 SolidMaterialProperties::validParams()
@@ -41,6 +41,8 @@ SolidMaterialProperties::SolidMaterialProperties(const InputParameters & paramet
     _cp(isParamValid("Cp") ? getFunction("Cp") : getFunction("cp")),
     _rho(getFunction("rho"))
 {
+  mooseDeprecated("Heat structure materials are deprecated in favor of SolidProperties objects. "
+                  "See heat structure documentation for more information.");
 }
 
 void
diff --git a/modules/thermal_hydraulics/test/tests/base/component_groups/test.i b/modules/thermal_hydraulics/test/tests/base/component_groups/test.i
index 4b73e3b638b1..eb747aba1328 100644
--- a/modules/thermal_hydraulics/test/tests/base/component_groups/test.i
+++ b/modules/thermal_hydraulics/test/tests/base/component_groups/test.i
@@ -23,9 +23,9 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [hx:wall]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 1
     cp = 1
     rho = 1
@@ -63,7 +63,8 @@
       type = HeatStructurePlate
       position = '0 0 0'
       orientation = '1 0 0'
-      materials = hx:wall
+      solid_properties = 'hx:wall'
+      solid_properties_T_ref = '300'
       n_elems = ${n_elems}
       length = ${length}
       n_part_elems = 1
diff --git a/modules/thermal_hydraulics/test/tests/base/logger/test.i b/modules/thermal_hydraulics/test/tests/base/logger/test.i
index e01326016974..1b1c09c448cc 100644
--- a/modules/thermal_hydraulics/test/tests/base/logger/test.i
+++ b/modules/thermal_hydraulics/test/tests/base/logger/test.i
@@ -1,6 +1,6 @@
-[HeatStructureMaterials]
+[SolidProperties]
   [a]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     rho = 1
     cp = 1
     k = 1
@@ -19,7 +19,8 @@
     length = 1
     names = '0'
     widths = '0.1'
-    materials = 'a'
+    solid_properties = 'a'
+    solid_properties_T_ref = '300'
     n_elems = 1
     n_part_elems = 1
     initial_T = 300
diff --git a/modules/thermal_hydraulics/test/tests/base/simulation/loop_identification.i b/modules/thermal_hydraulics/test/tests/base/simulation/loop_identification.i
index 7b1a87af38fe..b0a9c470eb0c 100644
--- a/modules/thermal_hydraulics/test/tests/base/simulation/loop_identification.i
+++ b/modules/thermal_hydraulics/test/tests/base/simulation/loop_identification.i
@@ -57,9 +57,9 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [hx:wall]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 1
     cp = 1
     rho = 1
@@ -134,7 +134,8 @@
     orientation = '1 0 0'
     length = 1
     n_elems = 1
-    materials = hx:wall
+    solid_properties = hx:wall
+    solid_properties_T_ref = '300'
     n_part_elems = 1
     names = 0
     widths = 1
diff --git a/modules/thermal_hydraulics/test/tests/components/deprecated/heat_generation.i b/modules/thermal_hydraulics/test/tests/components/deprecated/heat_generation.i
index ae858f3a11e9..3600cf8723e8 100644
--- a/modules/thermal_hydraulics/test/tests/components/deprecated/heat_generation.i
+++ b/modules/thermal_hydraulics/test/tests/components/deprecated/heat_generation.i
@@ -1,6 +1,6 @@
-[HeatStructureMaterials]
+[SolidProperties]
   [fuel-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 2.5
     cp = 300.
     rho = 1.032e4
@@ -18,7 +18,8 @@
     names = 'fuel'
     widths = '0.004096'
     n_part_elems = '1'
-    materials = 'fuel-mat'
+    solid_properties = 'fuel-mat'
+    solid_properties_T_ref = '300'
 
     initial_T = 559.15
   []
diff --git a/modules/thermal_hydraulics/test/tests/components/flow_component_ns/flow_component_ns_pinc.i b/modules/thermal_hydraulics/test/tests/components/flow_component_ns/flow_component_ns_pinc.i
index 8614c7cf421f..ee5e574acf10 100644
--- a/modules/thermal_hydraulics/test/tests/components/flow_component_ns/flow_component_ns_pinc.i
+++ b/modules/thermal_hydraulics/test/tests/components/flow_component_ns/flow_component_ns_pinc.i
@@ -72,7 +72,7 @@ p_outlet = 0
   []
 []
 
-[Materials]
+[FunctorMaterials]
   [const_functor]
     type = ADGenericFunctorMaterial
     prop_names = 'rho mu'
diff --git a/modules/thermal_hydraulics/test/tests/components/geometrical_component/err.2nd_order.i b/modules/thermal_hydraulics/test/tests/components/geometrical_component/err.2nd_order.i
index 869860287a9b..b5011f79fa2a 100644
--- a/modules/thermal_hydraulics/test/tests/components/geometrical_component/err.2nd_order.i
+++ b/modules/thermal_hydraulics/test/tests/components/geometrical_component/err.2nd_order.i
@@ -16,9 +16,9 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [hs-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 1
     cp = 1
     rho = 1
@@ -36,7 +36,8 @@
     names = 'blk'
     widths = '1'
     n_part_elems = '2'
-    materials = 'hs-mat'
+    solid_properties = 'hs-mat'
+    solid_properties_T_ref = '300'
 
     initial_T = 350
   []
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_source_from_power_density/err.base.i b/modules/thermal_hydraulics/test/tests/components/heat_source_from_power_density/err.base.i
index e5361a61d409..a0a1a6138754 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_source_from_power_density/err.base.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_source_from_power_density/err.base.i
@@ -15,9 +15,9 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [fuel-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 2.5
     cp = 300.
     rho = 1.032e4
@@ -35,7 +35,8 @@
     names = 'fuel'
     widths = '0.004096'
     n_part_elems = '1'
-    materials = 'fuel-mat'
+    solid_properties = 'fuel-mat'
+    solid_properties_T_ref = '300'
 
     initial_T = 559.15
   []
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_source_from_power_density/phy.cylinder_power_shape_aux_var.i b/modules/thermal_hydraulics/test/tests/components/heat_source_from_power_density/phy.cylinder_power_shape_aux_var.i
index 01793eaa9872..0844cf17f9cf 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_source_from_power_density/phy.cylinder_power_shape_aux_var.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_source_from_power_density/phy.cylinder_power_shape_aux_var.i
@@ -9,21 +9,21 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [fuel-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 16
     cp = 191.67
     rho = 1.4583e4
   []
   [gap-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 64
     cp = 1272
     rho = 865
   []
   [clad-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 26
     cp = 638
     rho = 7.646e3
@@ -65,7 +65,8 @@
     names = 'fuel gap clad'
     widths = '0.003015 0.000465  0.00052'
     n_part_elems = '20 2 2'
-    materials = 'fuel-mat gap-mat clad-mat'
+    solid_properties = 'fuel-mat gap-mat clad-mat'
+    solid_properties_T_ref = '300 300 300'
   []
 
   [CH1:hgen]
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_source_from_total_power/err.base.i b/modules/thermal_hydraulics/test/tests/components/heat_source_from_total_power/err.base.i
index 4cee7b83101e..580216bc31aa 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_source_from_total_power/err.base.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_source_from_total_power/err.base.i
@@ -1,6 +1,6 @@
-[HeatStructureMaterials]
+[SolidProperties]
   [fuel-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 2.5
     cp = 300.
     rho = 1.032e4
@@ -23,7 +23,8 @@
     names = 'fuel'
     widths = '0.004096'
     n_part_elems = '1'
-    materials = 'fuel-mat'
+    solid_properties = 'fuel-mat'
+    solid_properties_T_ref = '300'
 
     initial_T = 559.15
   []
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_source_from_total_power/phy.conservation.i b/modules/thermal_hydraulics/test/tests/components/heat_source_from_total_power/phy.conservation.i
index de1f50455be4..37c4552a097e 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_source_from_total_power/phy.conservation.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_source_from_total_power/phy.conservation.i
@@ -18,9 +18,9 @@ energy_change = ${fparse power_fraction * power * t}
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [main-material]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 1e4
     cp = 500.0
     rho = 100.0
@@ -38,7 +38,8 @@ energy_change = ${fparse power_fraction * power * t}
     n_elems = 100
 
     names = 'rgn1 rgn2 rgn3'
-    materials = 'main-material main-material main-material'
+    solid_properties = 'main-material main-material main-material'
+    solid_properties_T_ref = '300 300 300'
     widths = '0.4 0.1 0.5'
     n_part_elems = '2 2 2'
 
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_source_from_total_power/phy.cylinder_power_shape_fn.i b/modules/thermal_hydraulics/test/tests/components/heat_source_from_total_power/phy.cylinder_power_shape_fn.i
index 7b9640ea03be..28e3fed0c1a3 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_source_from_total_power/phy.cylinder_power_shape_fn.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_source_from_total_power/phy.cylinder_power_shape_fn.i
@@ -9,21 +9,21 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [fuel-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 16
     cp = 191.67
     rho = 1.4583e4
   []
   [gap-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 64
     cp = 1272
     rho = 865
   []
   [clad-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 26
     cp = 638
     rho = 7.646e3
@@ -48,7 +48,8 @@
     names = 'fuel gap clad'
     widths = '0.003015 0.000465  0.00052'
     n_part_elems = '20 2 2'
-    materials = 'fuel-mat gap-mat clad-mat'
+    solid_properties = 'fuel-mat gap-mat clad-mat'
+    solid_properties_T_ref = '300 300 300'
   []
 
   [CH1:hgen]
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_source_from_total_power/phy.plate.i b/modules/thermal_hydraulics/test/tests/components/heat_source_from_total_power/phy.plate.i
index c3fd60790a7c..e8a1250220a0 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_source_from_total_power/phy.plate.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_source_from_total_power/phy.plate.i
@@ -9,21 +9,21 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [fuel-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 16
     cp = 191.67
     rho = 1.4583e4
   []
   [gap-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 64
     cp = 1272
     rho = 865
   []
   [clad-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 26
     cp = 638
     rho = 7.646e3
@@ -49,7 +49,8 @@
     widths = '0.003015 0.000465  0.00052'
     depth = 1
     n_part_elems = '20 2 2'
-    materials = 'fuel-mat gap-mat clad-mat'
+    solid_properties = 'fuel-mat gap-mat clad-mat'
+    solid_properties_T_ref = '300 300 300'
   []
 
   [CH1:hgen]
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_2d_coupler/heat_structure_2d_coupler.i b/modules/thermal_hydraulics/test/tests/components/heat_structure_2d_coupler/heat_structure_2d_coupler.i
index 13510791e455..78f213fff56b 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_structure_2d_coupler/heat_structure_2d_coupler.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_structure_2d_coupler/heat_structure_2d_coupler.i
@@ -1,6 +1,6 @@
-[HeatStructureMaterials]
+[SolidProperties]
   [hs_mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 15
     cp = 500
     rho = 8000
@@ -18,7 +18,8 @@
     names = 'region1'
     widths = '0.5'
     n_part_elems = '5'
-    materials = 'hs_mat'
+    solid_properties = 'hs_mat'
+    solid_properties_T_ref = '300'
 
     initial_T = 500
   []
@@ -34,7 +35,8 @@
     names = 'region1 region2'
     widths = '0.5 0.2'
     n_part_elems = '5 3'
-    materials = 'hs_mat hs_mat'
+    solid_properties = 'hs_mat hs_mat'
+    solid_properties_T_ref = '300 300'
 
     initial_T = 300
   []
@@ -49,7 +51,8 @@
     names = 'region1'
     widths = '0.5'
     n_part_elems = '5'
-    materials = 'hs_mat'
+    solid_properties = 'hs_mat'
+    solid_properties_T_ref = '300'
 
     initial_T = 500
   []
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_2d_coupler/separated.i b/modules/thermal_hydraulics/test/tests/components/heat_structure_2d_coupler/separated.i
index 7c87f9213896..744c19ef061d 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_structure_2d_coupler/separated.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_structure_2d_coupler/separated.i
@@ -22,9 +22,9 @@ power_per_K = 5.0
 L_hs = 0.5
 htc = ${fparse power_per_K / (L_hs * P2)}
 
-[HeatStructureMaterials]
+[SolidProperties]
   [hs_mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 15
     cp = 500
     rho = 8000
@@ -42,7 +42,8 @@ htc = ${fparse power_per_K / (L_hs * P2)}
     names = 'region1'
     widths = '${R1}'
     n_part_elems = '5'
-    materials = 'hs_mat'
+    solid_properties = 'hs_mat'
+    solid_properties_T_ref = '300'
 
     initial_T = ${initial_T1}
   []
@@ -57,7 +58,8 @@ htc = ${fparse power_per_K / (L_hs * P2)}
     names = 'region1'
     widths = '${R2}'
     n_part_elems = '5'
-    materials = 'hs_mat'
+    solid_properties = 'hs_mat'
+    solid_properties_T_ref = '300'
 
     initial_T = ${initial_T2}
   []
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_2d_radiation_coupler_rz/heat_structure_2d_radiation_coupler_rz.i b/modules/thermal_hydraulics/test/tests/components/heat_structure_2d_radiation_coupler_rz/heat_structure_2d_radiation_coupler_rz.i
index 640b11a9b05a..600554e6a89a 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_structure_2d_radiation_coupler_rz/heat_structure_2d_radiation_coupler_rz.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_structure_2d_radiation_coupler_rz/heat_structure_2d_radiation_coupler_rz.i
@@ -1,9 +1,9 @@
 emissivity1 = 0.75
 emissivity2 = 0.5
 
-[HeatStructureMaterials]
+[SolidProperties]
   [hs_mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 15
     cp = 500
     rho = 8000
@@ -22,7 +22,8 @@ emissivity2 = 0.5
     names = 'region1'
     widths = '0.1'
     n_part_elems = '5'
-    materials = 'hs_mat'
+    solid_properties = 'hs_mat'
+    solid_properties_T_ref = '300'
 
     initial_T = 300
   []
@@ -39,7 +40,8 @@ emissivity2 = 0.5
     names = 'region1'
     widths = '0.1'
     n_part_elems = '5'
-    materials = 'hs_mat'
+    solid_properties = 'hs_mat'
+    solid_properties_T_ref = '300'
 
     initial_T = 1000
   []
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_base/2nd_order.i b/modules/thermal_hydraulics/test/tests/components/heat_structure_base/2nd_order.i
index aaeebfb157a2..66705f01c5bf 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_structure_base/2nd_order.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_structure_base/2nd_order.i
@@ -5,21 +5,21 @@
   2nd_order_mesh = true
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [fuel-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 3.65
     cp = 288.734
     rho = 1.0412e2
   []
   [gap-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 1.084498
     cp = 1.0
     rho = 1.0
   []
   [clad-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 16.48672
     cp = 321.384
     rho = 6.6e1
@@ -42,7 +42,8 @@
     names = 'FUEL GAP CLAD'
     widths = '0.0046955  0.0000955  0.000673'
     n_part_elems = '1 1 1'
-    materials = 'fuel-mat gap-mat clad-mat'
+    solid_properties = 'fuel-mat gap-mat clad-mat'
+    solid_properties_T_ref = '300 300 300'
 
     initial_T = 564.15
   []
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_base/axial_regions.i b/modules/thermal_hydraulics/test/tests/components/heat_structure_base/axial_regions.i
index e3d053c307dd..83a8c18a65c7 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_structure_base/axial_regions.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_structure_base/axial_regions.i
@@ -4,9 +4,9 @@
 # taken, and the output should show heat transfer only at the bottom 2
 # boundaries.
 
-[HeatStructureMaterials]
+[SolidProperties]
   [hs_mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 5
     cp = 300
     rho = 100
@@ -26,7 +26,8 @@
     names = 'radialregion'
     widths = '0.5'
     n_part_elems = '3'
-    materials = 'hs_mat'
+    solid_properties = 'hs_mat'
+    solid_properties_T_ref = '300'
 
     initial_T = 300
   []
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_base/err.no_2nd_order_with_trap.i b/modules/thermal_hydraulics/test/tests/components/heat_structure_base/err.no_2nd_order_with_trap.i
index c20b7282ca79..7ca7dd0cdf9a 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_structure_base/err.no_2nd_order_with_trap.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_structure_base/err.no_2nd_order_with_trap.i
@@ -6,21 +6,21 @@
   2nd_order_mesh = true
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [fuel-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 3.65
     cp = 288.734
     rho = 1.0412e2
   []
   [gap-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 1.084498
     cp = 1.0
     rho = 1.0
   []
   [clad-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 16.48672
     cp = 321.384
     rho = 6.6e1
@@ -43,7 +43,8 @@
     names = 'FUEL GAP CLAD'
     widths = '0.0046955  0.0000955  0.000673'
     n_part_elems = '1 1 1'
-    materials = 'fuel-mat gap-mat clad-mat'
+    solid_properties = 'fuel-mat gap-mat clad-mat'
+    solid_properties_T_ref = '300 300 300'
 
     initial_T = 564.15
   []
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_base/err.no_T_ic.i b/modules/thermal_hydraulics/test/tests/components/heat_structure_base/err.no_T_ic.i
index 536ce7508855..2dccc6a0dff2 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_structure_base/err.no_T_ic.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_structure_base/err.no_T_ic.i
@@ -4,21 +4,21 @@
 [GlobalParams]
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [fuel-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 3.65
     cp = 288.734
     rho = 1.0412e2
   []
   [gap-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 1.084498
     cp = 1.0
     rho = 1.0
   []
   [clad-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 16.48672
     cp = 321.384
     rho = 6.6e1
@@ -41,7 +41,8 @@
     names = 'FUEL GAP CLAD'
     widths = '0.0046955  0.0000955  0.000673'
     n_part_elems = '1 1 1'
-    materials = 'fuel-mat gap-mat clad-mat'
+    solid_properties = 'fuel-mat gap-mat clad-mat'
+    solid_properties_T_ref = '300 300 300'
   []
 
   [temp_outside]
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_base/inner_radial_boundary.i b/modules/thermal_hydraulics/test/tests/components/heat_structure_base/inner_radial_boundary.i
index a0f941af8fc3..d395de05be80 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_structure_base/inner_radial_boundary.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_structure_base/inner_radial_boundary.i
@@ -22,9 +22,9 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [hs_mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 1
     cp = 1
     rho = 1
@@ -43,7 +43,8 @@
     names = 'region1 region2 region3'
     widths = '1.0 3.0 2.0'
     n_part_elems = '2 6 8'
-    materials = 'hs_mat hs_mat hs_mat'
+    solid_properties = 'hs_mat hs_mat hs_mat'
+    solid_properties_T_ref = '300 300 300'
 
     initial_T = initial_T_fn
   []
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_base/interior_axial_boundaries.i b/modules/thermal_hydraulics/test/tests/components/heat_structure_base/interior_axial_boundaries.i
index cf4fd0343726..cf94f33f9bb1 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_structure_base/interior_axial_boundaries.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_structure_base/interior_axial_boundaries.i
@@ -25,9 +25,9 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [hs_mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 1
     cp = 1
     rho = 1
@@ -47,7 +47,8 @@
     names = 'radial1 radial2 radial3'
     widths = '0.5 0.5 0.5'
     n_part_elems = '2 2 2'
-    materials = 'hs_mat hs_mat hs_mat'
+    solid_properties = 'hs_mat hs_mat hs_mat'
+    solid_properties_T_ref = '300 300 300'
 
     depth = 1.0
 
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_base/phy.sub_discretization.i b/modules/thermal_hydraulics/test/tests/components/heat_structure_base/phy.sub_discretization.i
index 77363fa59a55..b285f0d095fc 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_structure_base/phy.sub_discretization.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_structure_base/phy.sub_discretization.i
@@ -6,21 +6,21 @@
 [GlobalParams]
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [fuel-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 3.65
     cp = 288.734
     rho = 1.0412e2
   []
   [gap-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 1.084498
     cp = 1.0
     rho = 1.0
   []
   [clad-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 16.48672
     cp = 321.384
     rho = 6.6e1
@@ -40,7 +40,8 @@
     names = 'FUEL GAP CLAD'
     widths = '0.0046955  0.0000955  0.000673'
     n_part_elems = '10 3 3'
-    materials = 'fuel-mat gap-mat clad-mat'
+    solid_properties = 'fuel-mat gap-mat clad-mat'
+    solid_properties_T_ref = '300 300 300'
 
     initial_T = 300
   []
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_base/phy.variable_init_t.i b/modules/thermal_hydraulics/test/tests/components/heat_structure_base/phy.variable_init_t.i
index e71867d2a526..08d736ad5f06 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_structure_base/phy.variable_init_t.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_structure_base/phy.variable_init_t.i
@@ -12,21 +12,21 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [fuel-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 3.65
     cp = 288.734
     rho = 1.0412e2
   []
   [gap-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 0.1
     cp = 1.0
     rho = 1.0
   []
   [clad-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 16.48672
     cp = 321.384
     rho = 6.6e1
@@ -44,7 +44,8 @@
     names = 'FUEL GAP CLAD'
     widths = '0.0046955  0.0000955  0.000673'
     n_part_elems = '10 3 3'
-    materials = 'fuel-mat gap-mat clad-mat'
+    solid_properties = 'fuel-mat gap-mat clad-mat'
+    solid_properties_T_ref = '300 300 300'
 
     initial_T = fn-initial_T
   []
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_base/tests b/modules/thermal_hydraulics/test/tests/components/heat_structure_base/tests
index c360ed2058a7..724f158fc28e 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_structure_base/tests
+++ b/modules/thermal_hydraulics/test/tests/components/heat_structure_base/tests
@@ -94,12 +94,12 @@
       detail = 'the user does not specify a matching number of names and widths for every part in a cylindrical heat structure,'
     []
 
-    [err:incorrect_size_of_materials]
+    [err:incorrect_size_of_solid_properties]
       type = 'RunException'
       input = 'err.no_T_ic.i'
-      cli_args = 'Components/hs/materials=a'
-      expect_err = "hs: The number of entries in parameter 'names' \(3\) must equal the number of entries of parameter 'materials' \(1\)"
-      detail = 'the user does not specify a matching number of names and materials for every part in a cylindrical heat structure.'
+      cli_args = 'Components/hs/solid_properties=a'
+      expect_err = "hs: The number of entries in parameter 'solid_properties' \(1\) must equal the number of entries of parameter 'names' \(3\)"
+      detail = 'the user does not specify a matching number of names and solid properties for every part in a cylindrical heat structure.'
     []
   []
 []
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/by_hsmaterials.i b/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/by_hsmaterials.i
new file mode 100644
index 000000000000..24bd5a198491
--- /dev/null
+++ b/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/by_hsmaterials.i
@@ -0,0 +1,30 @@
+# Tests that cylindrical heat structure geometry can be used.
+
+!include part_base.i
+
+[HeatStructureMaterials]
+  [fuel-mat]
+    type = SolidMaterialProperties
+    k = 3.65
+    cp = 288.734
+    rho = 1.0412e2
+  []
+  [gap-mat]
+    type = SolidMaterialProperties
+    k = 1.084498
+    cp = 1.0
+    rho = 1.0
+  []
+  [clad-mat]
+    type = SolidMaterialProperties
+    k = 16.48672
+    cp = 321.384
+    rho = 6.6e1
+  []
+[]
+
+[Components]
+  [hs]
+    materials = 'fuel-mat gap-mat clad-mat'
+  []
+[]
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/by_materials.i b/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/by_materials.i
new file mode 100644
index 000000000000..978a1d7ec001
--- /dev/null
+++ b/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/by_materials.i
@@ -0,0 +1,36 @@
+# Tests that cylindrical heat structure thermal properties can be defined in the Materials block
+
+!include part_base.i
+
+[SolidProperties]
+  [function_sp]
+    type = ThermalFunctionSolidProperties
+    rho = 6.6e1
+    cp = 321.384
+    k = 16.48672
+  []
+[]
+
+[Materials]
+  [fuel-mat]
+    type = ADGenericConstantMaterial
+    block = hs:FUEL
+    prop_names = 'thermal_conductivity specific_heat density'
+    prop_values = '3.65 288.734 1.0412e2'
+  []
+
+  [gap-mat]
+    type = ADGenericConstantMaterial
+    block = hs:GAP
+    prop_names = 'thermal_conductivity specific_heat density'
+    prop_values = '1.084498 1.0 1.0'
+  []
+
+  [clad-mat]
+    type = ADConstantDensityThermalSolidPropertiesMaterial
+    block = hs:CLAD
+    sp = function_sp
+    temperature = T_solid
+    T_ref = 300
+  []
+[]
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/by_solid_properties.i b/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/by_solid_properties.i
new file mode 100644
index 000000000000..3124aab5eb85
--- /dev/null
+++ b/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/by_solid_properties.i
@@ -0,0 +1,31 @@
+# Tests that cylindrical heat structure thermal properties can be defined in the SolidProperties block
+
+!include part_base.i
+
+[SolidProperties]
+  [fuel_sp]
+    type = ThermalFunctionSolidProperties
+    rho = 1.0412e2
+    cp = 288.734
+    k = 3.65
+  []
+  [gap_sp]
+    type = ThermalFunctionSolidProperties
+    rho = 1.0
+    cp = 1.0
+    k = 1.084498
+  []
+  [clad_sp]
+    type = ThermalFunctionSolidProperties
+    rho = 6.6e1
+    cp = 321.384
+    k = 16.48672
+  []
+[]
+
+[Components]
+  [hs]
+    solid_properties = 'fuel_sp gap_sp clad_sp'
+    solid_properties_T_ref = '300 300 300'
+  []
+[]
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/gold/phy.rz_out.e b/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/gold/transient.e
similarity index 100%
rename from modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/gold/phy.rz_out.e
rename to modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/gold/transient.e
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/phy.rz.i b/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/part_base.i
similarity index 70%
rename from modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/phy.rz.i
rename to modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/part_base.i
index 833ab7f3969b..6a1331a02df4 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/phy.rz.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/part_base.i
@@ -1,5 +1,3 @@
-# Tests that cylindrical heat structure geometry can be used.
-
 [Functions]
   [power_profile_fn]
     type = ParsedFunction
@@ -7,27 +5,6 @@
   []
 []
 
-[HeatStructureMaterials]
-  [fuel-mat]
-    type = SolidMaterialProperties
-    k = 3.65
-    cp = 288.734
-    rho = 1.0412e2
-  []
-  [gap-mat]
-    type = SolidMaterialProperties
-    k = 1.084498
-    cp = 1.0
-    rho = 1.0
-  []
-  [clad-mat]
-    type = SolidMaterialProperties
-    k = 16.48672
-    cp = 321.384
-    rho = 6.6e1
-  []
-[]
-
 [Components]
   [reactor]
     type = TotalPower
@@ -44,7 +21,6 @@
     names = 'FUEL GAP CLAD'
     widths = '0.0046955  0.0000955  0.000673'
     n_part_elems = '3 1 1'
-    materials = 'fuel-mat gap-mat clad-mat'
 
     initial_T = 564.15
   []
@@ -67,7 +43,7 @@
 []
 
 [Preconditioning]
-  [SMP_PJFNK]
+  [pc]
     type = SMP
     full = true
   []
@@ -91,11 +67,9 @@
   l_max_its = 300
 []
 
-
 [Outputs]
-  [out]
-    type = Exodus
-  []
+  file_base = transient
+  exodus = true
   [console]
     type = Console
     execute_scalars_on = none
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/phy.rz_mats.i b/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/phy.rz_mats.i
deleted file mode 100644
index a3e7cf6d6a1c..000000000000
--- a/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/phy.rz_mats.i
+++ /dev/null
@@ -1,112 +0,0 @@
-# Tests that cylindrical heat structure thermal properties can be defined in the Materials block
-
-[Functions]
-  [power_profile_fn]
-    type = ParsedFunction
-    expression = '1.570796326794897 * sin(x / 3.6576 * pi)'
-  []
-[]
-
-[SolidProperties]
-  [function_sp]
-    type = ThermalFunctionSolidProperties
-    rho = 6.6e1
-    cp = 321.384
-    k = 16.48672
-  []
-[]
-
-[Materials]
-  [fuel-mat]
-    type = ADGenericConstantMaterial
-    block = hs:FUEL
-    prop_names = 'thermal_conductivity specific_heat density'
-    prop_values = '3.65 288.734 1.0412e2'
-  []
-
-  [gap-mat]
-    type = ADGenericConstantMaterial
-    block = hs:GAP
-    prop_names = 'thermal_conductivity specific_heat density'
-    prop_values = '1.084498 1.0 1.0'
-  []
-
-  [clad-mat]
-    type = ADConstantDensityThermalSolidPropertiesMaterial
-    block = hs:CLAD
-    sp = function_sp
-    temperature = T_solid
-    T_ref = 300
-  []
-[]
-
-[Components]
-  [reactor]
-    type = TotalPower
-    power = 296153.84615384615385
-  []
-
-  [hs]
-    type = HeatStructureCylindrical
-    position = '0 0 1'
-    orientation = '1 0 0'
-
-    length = 3.6576
-    n_elems = 20
-    names = 'FUEL GAP CLAD'
-    widths = '0.0046955  0.0000955  0.000673'
-    n_part_elems = '3 1 1'
-
-    initial_T = 564.15
-  []
-
-  [hg]
-    type = HeatSourceFromTotalPower
-    hs = hs
-    regions = 'FUEL'
-    power_fraction = 3.33672612e-1
-    power = reactor
-    power_shape_function = power_profile_fn
-  []
-
-  [temp_outside]
-    type = HSBoundarySpecifiedTemperature
-    hs = hs
-    boundary = hs:outer
-    T = 600
-  []
-[]
-
-[Preconditioning]
-  [pc]
-    type = SMP
-    full = true
-  []
-[]
-
-[Executioner]
-  type = Transient
-  scheme = 'bdf2'
-
-  start_time = 0
-  dt = 2
-  num_steps = 10
-  abort_on_solve_fail = true
-
-  solve_type = 'NEWTON'
-  nl_rel_tol = 1e-6
-  nl_abs_tol = 1e-6
-  nl_max_its = 30
-
-  l_tol = 1e-4
-  l_max_its = 300
-[]
-
-
-[Outputs]
-  exodus = true
-  [console]
-    type = Console
-    execute_scalars_on = none
-  []
-[]
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/steady.i b/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/steady.i
index 3e4857b106d0..a436e0364d18 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/steady.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/steady.i
@@ -7,24 +7,24 @@
   []
 []
 
-[HeatStructureMaterials]
-  [fuel-mat]
-    type = SolidMaterialProperties
-    k = 3.65
-    cp = 288.734
+[SolidProperties]
+  [fuel_sp]
+    type = ThermalFunctionSolidProperties
     rho = 1.0412e2
+    cp = 288.734
+    k = 3.65
   []
-  [gap-mat]
-    type = SolidMaterialProperties
-    k = 1.084498
-    cp = 1.0
+  [gap_sp]
+    type = ThermalFunctionSolidProperties
     rho = 1.0
+    cp = 1.0
+    k = 1.084498
   []
-  [clad-mat]
-    type = SolidMaterialProperties
-    k = 16.48672
-    cp = 321.384
+  [clad_sp]
+    type = ThermalFunctionSolidProperties
     rho = 6.6e1
+    cp = 321.384
+    k = 16.48672
   []
 []
 
@@ -44,7 +44,8 @@
     names = 'FUEL GAP CLAD'
     widths = '0.0046955  0.0000955  0.000673'
     n_part_elems = '3 1 1'
-    materials = 'fuel-mat gap-mat clad-mat'
+    solid_properties = 'fuel_sp gap_sp clad_sp'
+    solid_properties_T_ref = '300 300 300'
 
     initial_T = 564.15
   []
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/tests b/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/tests
index 88a826c38501..0833fc5031ea 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/tests
+++ b/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/tests
@@ -5,22 +5,30 @@
   [physics]
     requirement = 'The system shall simulate a 2D cylindrical heat structure'
 
-    [transient]
+    [by_hsmaterials]
       type = Exodiff
-      input = 'phy.rz.i'
-      exodiff = 'phy.rz_out.e'
-      custom_cmp = 'phy.rz.exodiff'
+      input = 'by_hsmaterials.i'
+      exodiff = 'transient.e'
+      custom_cmp = 'transient.exodiff'
+      no_error_deprecated = True
       detail = 'in a transient problem, with properties defined by HeatStructureMaterials.'
     []
-    [transient_mats]
+    [by_materials]
       type = Exodiff
-      input = 'phy.rz_mats.i'
-      exodiff = 'phy.rz_out.e'
-      custom_cmp = 'phy.rz.exodiff'
-      cli_args = 'Outputs/file_base=phy.rz_out'
-      prereq = 'physics/transient'
+      input = 'by_materials.i'
+      exodiff = 'transient.e'
+      custom_cmp = 'transient.exodiff'
+      prereq = 'physics/by_hsmaterials'
       detail = 'in a transient problem, with properties defined by Materials.'
     []
+    [by_solid_properties]
+      type = Exodiff
+      input = 'by_solid_properties.i'
+      exodiff = 'transient.e'
+      custom_cmp = 'transient.exodiff'
+      prereq = 'physics/by_materials'
+      detail = 'in a transient problem, with properties defined by SolidProperties.'
+    []
     [steady]
       type = Exodiff
       input = 'steady.i'
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/phy.rz.exodiff b/modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/transient.exodiff
similarity index 100%
rename from modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/phy.rz.exodiff
rename to modules/thermal_hydraulics/test/tests/components/heat_structure_cylindrical/transient.exodiff
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_plate/by_hsmaterials.i b/modules/thermal_hydraulics/test/tests/components/heat_structure_plate/by_hsmaterials.i
new file mode 100644
index 000000000000..7cac7ad0ba26
--- /dev/null
+++ b/modules/thermal_hydraulics/test/tests/components/heat_structure_plate/by_hsmaterials.i
@@ -0,0 +1,16 @@
+!include part_base.i
+
+[HeatStructureMaterials]
+  [hs-mat]
+    type = SolidMaterialProperties
+    k = 1
+    cp = 1
+    rho = 1
+  []
+[]
+
+[Components]
+  [hs]
+    materials = 'hs-mat'
+  []
+[]
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_plate/by_materials.i b/modules/thermal_hydraulics/test/tests/components/heat_structure_plate/by_materials.i
new file mode 100644
index 000000000000..9f8e0f67dcf8
--- /dev/null
+++ b/modules/thermal_hydraulics/test/tests/components/heat_structure_plate/by_materials.i
@@ -0,0 +1,10 @@
+!include part_base.i
+
+[Materials]
+  [hs-mat]
+    type = ADGenericConstantMaterial
+    block = hs:blk
+    prop_names = 'thermal_conductivity specific_heat density'
+    prop_values = '1 1 1'
+  []
+[]
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_plate/by_solid_properties.i b/modules/thermal_hydraulics/test/tests/components/heat_structure_plate/by_solid_properties.i
new file mode 100644
index 000000000000..348cd1bfb7d4
--- /dev/null
+++ b/modules/thermal_hydraulics/test/tests/components/heat_structure_plate/by_solid_properties.i
@@ -0,0 +1,17 @@
+!include part_base.i
+
+[SolidProperties]
+  [sp]
+    type = ThermalFunctionSolidProperties
+    rho = 1
+    cp = 1
+    k = 1
+  []
+[]
+
+[Components]
+  [hs]
+    solid_properties = 'sp'
+    solid_properties_T_ref = '300'
+  []
+[]
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_plate/gold/phy.test_out.e b/modules/thermal_hydraulics/test/tests/components/heat_structure_plate/gold/transient.e
similarity index 100%
rename from modules/thermal_hydraulics/test/tests/components/heat_structure_plate/gold/phy.test_out.e
rename to modules/thermal_hydraulics/test/tests/components/heat_structure_plate/gold/transient.e
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_plate/phy.test.i b/modules/thermal_hydraulics/test/tests/components/heat_structure_plate/part_base.i
similarity index 84%
rename from modules/thermal_hydraulics/test/tests/components/heat_structure_plate/phy.test.i
rename to modules/thermal_hydraulics/test/tests/components/heat_structure_plate/part_base.i
index 84a7e6ed40a7..927b2076d784 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_structure_plate/phy.test.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_structure_plate/part_base.i
@@ -1,12 +1,3 @@
-[HeatStructureMaterials]
-  [hs-mat]
-    type = SolidMaterialProperties
-    k = 1
-    cp = 1
-    rho = 1
-  []
-[]
-
 [Components]
   [hs]
     type = HeatStructurePlate
@@ -19,7 +10,6 @@
     widths = '1'
     depth = 0.5
     n_part_elems = '5'
-    materials = 'hs-mat'
 
     initial_T = 350
   []
@@ -40,7 +30,7 @@
 []
 
 [Preconditioning]
-  [SMP]
+  [pc]
     type = SMP
     full = true
   []
@@ -63,5 +53,6 @@
 []
 
 [Outputs]
+  file_base = transient
   exodus = true
 []
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_plate/phy.test_mats.i b/modules/thermal_hydraulics/test/tests/components/heat_structure_plate/phy.test_mats.i
deleted file mode 100644
index 038868c05b17..000000000000
--- a/modules/thermal_hydraulics/test/tests/components/heat_structure_plate/phy.test_mats.i
+++ /dev/null
@@ -1,66 +0,0 @@
-[Materials]
-  [hs-mat]
-    type = ADGenericConstantMaterial
-    block = hs:blk
-    prop_names = 'thermal_conductivity specific_heat density'
-    prop_values = '1 1 1'
-  []
-[]
-
-[Components]
-  [hs]
-    type = HeatStructurePlate
-    position = '0 0 0'
-    orientation = '1 0 0'
-
-    length = 1
-    n_elems = 5
-    names = 'blk'
-    widths = '1'
-    depth = 0.5
-    n_part_elems = '5'
-
-    initial_T = 350
-  []
-
-  [start]
-    type = HSBoundarySpecifiedTemperature
-    hs = hs
-    boundary = hs:start
-    T = 300
-  []
-
-  [end]
-    type = HSBoundarySpecifiedTemperature
-    hs = hs
-    boundary = hs:end
-    T = 400
-  []
-[]
-
-[Preconditioning]
-  [pc]
-    type = SMP
-    full = true
-  []
-[]
-
-[Executioner]
-  type = Transient
-  scheme = 'bdf2'
-
-  start_time = 0
-  dt = 1
-  num_steps = 10
-  abort_on_solve_fail = true
-
-  solve_type = 'NEWTON'
-  nl_rel_tol = 1e-8
-  nl_abs_tol = 1e-8
-  petsc_options_iname = '-pc_type'
-  petsc_options_value = 'lu'
-[]
-
-[Outputs]
-  exodus = true
-[]
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_structure_plate/tests b/modules/thermal_hydraulics/test/tests/components/heat_structure_plate/tests
index 821b70f085c9..dc537faa3382 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_structure_plate/tests
+++ b/modules/thermal_hydraulics/test/tests/components/heat_structure_plate/tests
@@ -1,19 +1,30 @@
 [Tests]
   design = 'HeatStructurePlate.md'
   issues = '#19837'
-  [phy:test]
-    type = Exodiff
-    input = 'phy.test.i'
-    exodiff = 'phy.test_out.e'
-    requirement = 'The system shall be able to model heat conduction in a plate.'
-  []
 
-  [phy:test_mats]
-    type = Exodiff
-    input = 'phy.test_mats.i'
-    exodiff = 'phy.test_out.e'
-    cli_args = 'Outputs/file_base=phy.test_out'
-    prereq = 'phy:test'
-    requirement = 'The system shall be able to model heat conduction in a plate using materials to define the solid properties.'
+  [physics]
+    requirement = 'The system shall be able to model heat conduction in a 2-D plate'
+
+    [by_hsmaterials]
+      type = Exodiff
+      input = 'by_hsmaterials.i'
+      exodiff = 'transient.e'
+      no_error_deprecated = True
+      detail = 'with properties defined by HeatStructureMaterials.'
+    []
+    [by_materials]
+      type = Exodiff
+      input = 'by_materials.i'
+      exodiff = 'transient.e'
+      prereq = 'physics/by_hsmaterials'
+      detail = 'with properties defined by Materials.'
+    []
+    [by_solid_properties]
+      type = Exodiff
+      input = 'by_solid_properties.i'
+      exodiff = 'transient.e'
+      prereq = 'physics/by_materials'
+      detail = 'with properties defined by SolidProperties.'
+    []
   []
 []
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/err.1phase.i b/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/err.1phase.i
index 9b2cf1ce8c8f..85d17c94aa66 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/err.1phase.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/err.1phase.i
@@ -18,9 +18,9 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [fuel-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 2.5
     cp = 300.
     rho = 1.032e4
@@ -52,7 +52,8 @@
     names = 'fuel'
     widths = '0.1'
     n_part_elems = '1'
-    materials = 'fuel-mat'
+    solid_properties = 'fuel-mat'
+    solid_properties_T_ref = '300'
 
     initial_T = 300
   []
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/jac.1phase.i b/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/jac.1phase.i
index 7d7052ab9adb..56604dd91ac8 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/jac.1phase.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/jac.1phase.i
@@ -21,9 +21,9 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [fuel-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 2.5
     cp = 300.
     rho = 1.032e4
@@ -55,7 +55,8 @@
     names = 'fuel'
     widths = '0.1'
     n_part_elems = '1'
-    materials = 'fuel-mat'
+    solid_properties = 'fuel-mat'
+    solid_properties_T_ref = '300'
 
     initial_T = 300
   []
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/phy.T_wall_transfer_3eqn_x.i b/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/phy.T_wall_transfer_3eqn_x.i
index f981d27bc124..1978794f3c62 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/phy.T_wall_transfer_3eqn_x.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/phy.T_wall_transfer_3eqn_x.i
@@ -28,9 +28,9 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [wall-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 100.0
     rho = 100.0
     cp = 100.0
@@ -68,7 +68,8 @@
     n_elems = 50
     #rotation = 90
 
-    materials = 'wall-mat'
+    solid_properties = 'wall-mat'
+    solid_properties_T_ref = '300'
     n_part_elems = 3
     widths = '0.1'
     names = 'wall'
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/phy.T_wall_transfer_3eqn_y.i b/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/phy.T_wall_transfer_3eqn_y.i
index 2f6e35a094f0..9b5a721d4334 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/phy.T_wall_transfer_3eqn_y.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/phy.T_wall_transfer_3eqn_y.i
@@ -28,9 +28,9 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [wall-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 100.0
     rho = 100.0
     cp = 100.0
@@ -67,7 +67,8 @@
     length = 1
     n_elems = 50
 
-    materials = 'wall-mat'
+    solid_properties = 'wall-mat'
+    solid_properties_T_ref = '300'
     n_part_elems = 3
     widths = '0.1'
     names = 'wall'
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/phy.T_wall_transfer_3eqn_z.i b/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/phy.T_wall_transfer_3eqn_z.i
index 2d91c168e586..472c06a7ef5b 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/phy.T_wall_transfer_3eqn_z.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/phy.T_wall_transfer_3eqn_z.i
@@ -28,9 +28,9 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [wall-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 100.0
     rho = 100.0
     cp = 100.0
@@ -68,7 +68,8 @@
     n_elems = 50
     rotation = 90
 
-    materials = 'wall-mat'
+    solid_properties = 'wall-mat'
+    solid_properties_T_ref = '300'
     n_part_elems = 2
     widths = '0.1'
     names = 'wall'
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/phy.conservation_1phase.i b/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/phy.conservation_1phase.i
index f4a82d2b37dd..d93c1b5061fb 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/phy.conservation_1phase.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/phy.conservation_1phase.i
@@ -25,9 +25,9 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [main-material]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 1e4
     cp = 500.0
     rho = 100.0
@@ -87,7 +87,8 @@
     n_elems = 5
 
     names = 'main'
-    materials = 'main-material'
+    solid_properties = 'main-material'
+    solid_properties_T_ref = '300'
     widths = '1.0'
     n_part_elems = '5'
 
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/phy.energy_heatstructure_ss_1phase.i b/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/phy.energy_heatstructure_ss_1phase.i
index 1ac297765ccd..452c63af2ca4 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/phy.energy_heatstructure_ss_1phase.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/phy.energy_heatstructure_ss_1phase.i
@@ -31,21 +31,21 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [fuel-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 3.7
     cp = 3.e2
     rho = 10.42e3
   []
   [gap-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 0.7
     cp = 5e3
     rho = 1.0
   []
   [clad-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 16
     cp = 356.
     rho = 6.551400E+03
@@ -82,7 +82,8 @@
     names =  'FUEL GAP CLAD'
     widths = '6.057900E-03  1.524000E-04  9.398000E-04'
     n_part_elems = '5 1 2'
-    materials = 'fuel-mat gap-mat clad-mat'
+    solid_properties = 'fuel-mat gap-mat clad-mat'
+    solid_properties_T_ref = '300 300 300'
 
     initial_T = 513
   []
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/phy.heat_structure_multiple_3eqn.i b/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/phy.heat_structure_multiple_3eqn.i
index 9f22cbea9916..5d69fbebf6bc 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/phy.heat_structure_multiple_3eqn.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_1phase/phy.heat_structure_multiple_3eqn.i
@@ -88,15 +88,15 @@ cp2 = 600
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [hs1_mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = ${k1}
     rho = ${rho1}
     cp = ${cp1}
   []
   [hs2_mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = ${k2}
     rho = ${rho2}
     cp = ${cp2}
@@ -123,7 +123,8 @@ cp2 = 600
     depth = 1
     n_elems = 10
 
-    materials = 'hs1_mat'
+    solid_properties = 'hs1_mat'
+    solid_properties_T_ref = '300'
     n_part_elems = '5'
     widths = '1'
     names = 'solid'
@@ -139,7 +140,8 @@ cp2 = 600
     depth = 1
     n_elems = 10
 
-    materials = 'hs2_mat'
+    solid_properties = 'hs2_mat'
+    solid_properties_T_ref = '300'
     n_part_elems = '5'
     widths = '1'
     names = 'solid'
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_3d/err.not_a_3d_hs.i b/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_3d/err.not_a_3d_hs.i
index b2c9fbd454ae..e6b31719fd06 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_3d/err.not_a_3d_hs.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_heat_structure_3d/err.not_a_3d_hs.i
@@ -2,12 +2,12 @@
   scaling_factor_1phase = '1 1 1e-3'
 []
 
-[Materials]
+[SolidProperties]
   [mat]
-    type = ADGenericConstantMaterial
-    block = 'blk:0'
-    prop_names = 'density specific_heat thermal_conductivity'
-    prop_values = '1000 100 30'
+    type = ThermalFunctionSolidProperties
+    rho = 1000
+    cp = 100
+    k = 30
   []
 []
 
@@ -72,7 +72,8 @@
     n_elems = 6
     n_part_elems = 1
     initial_T = T_init
-    materials = 'mat'
+    solid_properties = 'mat'
+    solid_properties_T_ref = '300'
     names = blk
   []
   [ht]
diff --git a/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_specified_temperature_1phase/err.no_phf.i b/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_specified_temperature_1phase/err.no_phf.i
index 0be598dc6039..56f610439c96 100644
--- a/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_specified_temperature_1phase/err.no_phf.i
+++ b/modules/thermal_hydraulics/test/tests/components/heat_transfer_from_specified_temperature_1phase/err.no_phf.i
@@ -10,9 +10,9 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 1
     cp = 2
     rho = 3
@@ -46,7 +46,8 @@
     names = 'blk'
     widths = '0.1'
     n_part_elems = '1'
-    materials = 'mat'
+    solid_properties = 'mat'
+    solid_properties_T_ref = '300'
 
     initial_T = 300
   []
diff --git a/modules/thermal_hydraulics/test/tests/components/hs_boundary_ambient_convection/cylindrical.i b/modules/thermal_hydraulics/test/tests/components/hs_boundary_ambient_convection/cylindrical.i
index ab8d3d6b0723..23205604ec39 100644
--- a/modules/thermal_hydraulics/test/tests/components/hs_boundary_ambient_convection/cylindrical.i
+++ b/modules/thermal_hydraulics/test/tests/components/hs_boundary_ambient_convection/cylindrical.i
@@ -38,9 +38,9 @@ E_change = ${fparse power * t}
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [hs_mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     rho = ${density}
     cp = ${specific_heat_capacity}
     k = ${conductivity}
@@ -58,7 +58,8 @@ E_change = ${fparse power * t}
     inner_radius = ${R_i}
     widths = '${thickness}'
     n_part_elems = '10'
-    materials = 'hs_mat'
+    solid_properties = 'hs_mat'
+    solid_properties_T_ref = '300'
     names = 'region'
 
     initial_T = ${T_hs}
diff --git a/modules/thermal_hydraulics/test/tests/components/hs_boundary_ambient_convection/plate.i b/modules/thermal_hydraulics/test/tests/components/hs_boundary_ambient_convection/plate.i
index e768e8827376..749d241a3b08 100644
--- a/modules/thermal_hydraulics/test/tests/components/hs_boundary_ambient_convection/plate.i
+++ b/modules/thermal_hydraulics/test/tests/components/hs_boundary_ambient_convection/plate.i
@@ -35,9 +35,9 @@ E_change = ${fparse scale * heat_flux_integral * t}
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [hs_mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     rho = ${density}
     cp = ${specific_heat_capacity}
     k = ${conductivity}
@@ -55,7 +55,8 @@ E_change = ${fparse scale * heat_flux_integral * t}
     depth = ${depth}
     widths = '${thickness}'
     n_part_elems = '10'
-    materials = 'hs_mat'
+    solid_properties = 'hs_mat'
+    solid_properties_T_ref = '300'
     names = 'region'
 
     initial_T = ${T_hs}
diff --git a/modules/thermal_hydraulics/test/tests/components/hs_boundary_external_app_convection/plate.i b/modules/thermal_hydraulics/test/tests/components/hs_boundary_external_app_convection/plate.i
index 725b98d73815..64c94fbdfe32 100644
--- a/modules/thermal_hydraulics/test/tests/components/hs_boundary_external_app_convection/plate.i
+++ b/modules/thermal_hydraulics/test/tests/components/hs_boundary_external_app_convection/plate.i
@@ -14,9 +14,9 @@ conductivity = 20
 scale = 0.8
 
 
-[HeatStructureMaterials]
+[SolidProperties]
   [hs_mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     rho = ${density}
     cp = ${specific_heat_capacity}
     k = ${conductivity}
@@ -34,7 +34,8 @@ scale = 0.8
     depth = ${depth}
     widths = '${thickness}'
     n_part_elems = '10'
-    materials = 'hs_mat'
+    solid_properties = 'hs_mat'
+    solid_properties_T_ref = '300'
     names = 'region'
 
     initial_T = ${T_hs}
diff --git a/modules/thermal_hydraulics/test/tests/components/hs_boundary_external_app_heat_flux/sub.i b/modules/thermal_hydraulics/test/tests/components/hs_boundary_external_app_heat_flux/sub.i
index 15182a2dbe4e..5f5f1072df7a 100644
--- a/modules/thermal_hydraulics/test/tests/components/hs_boundary_external_app_heat_flux/sub.i
+++ b/modules/thermal_hydraulics/test/tests/components/hs_boundary_external_app_heat_flux/sub.i
@@ -15,9 +15,9 @@ rho = 8000.0
 cp = 500.0
 k = 15.0
 
-[HeatStructureMaterials]
+[SolidProperties]
   [hs_mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     rho = ${rho}
     cp = ${cp}
     k = ${k}
@@ -35,7 +35,8 @@ k = 15.0
     names = 'body'
     widths = '${radius}'
     n_part_elems = '${n_elems_radial}'
-    materials = 'hs_mat'
+    solid_properties = 'hs_mat'
+    solid_properties_T_ref = '300'
 
     initial_T = ${T_initial}
   []
diff --git a/modules/thermal_hydraulics/test/tests/components/hs_boundary_external_app_temperature/phy.child.i b/modules/thermal_hydraulics/test/tests/components/hs_boundary_external_app_temperature/phy.child.i
index 13765e66d2db..d2d2a1b9ada5 100644
--- a/modules/thermal_hydraulics/test/tests/components/hs_boundary_external_app_temperature/phy.child.i
+++ b/modules/thermal_hydraulics/test/tests/components/hs_boundary_external_app_temperature/phy.child.i
@@ -1,6 +1,6 @@
-[HeatStructureMaterials]
+[SolidProperties]
   [ss316]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     rho = 8.0272e3
     cp = 502.1
     k = 16.26
@@ -18,7 +18,8 @@
     inner_radius = 0.1
     widths = '0.5'
     n_part_elems = '10'
-    materials = 'ss316'
+    solid_properties = 'ss316'
+    solid_properties_T_ref = '300'
     names = 'region'
 
     initial_T = 300
diff --git a/modules/thermal_hydraulics/test/tests/components/hs_boundary_heat_flux/cylindrical.i b/modules/thermal_hydraulics/test/tests/components/hs_boundary_heat_flux/cylindrical.i
index edcf18aadb12..3fdcfcc8b70a 100644
--- a/modules/thermal_hydraulics/test/tests/components/hs_boundary_heat_flux/cylindrical.i
+++ b/modules/thermal_hydraulics/test/tests/components/hs_boundary_heat_flux/cylindrical.i
@@ -25,9 +25,9 @@ E_change = ${fparse power * t}
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [hs_mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     rho = ${density}
     cp = ${specific_heat_capacity}
     k = ${conductivity}
@@ -45,7 +45,8 @@ E_change = ${fparse power * t}
     inner_radius = ${R_i}
     widths = '${thickness}'
     n_part_elems = '10'
-    materials = 'hs_mat'
+    solid_properties = 'hs_mat'
+    solid_properties_T_ref = '300'
     names = 'region'
 
     initial_T = ${T_hs}
diff --git a/modules/thermal_hydraulics/test/tests/components/hs_boundary_heat_flux/plate.i b/modules/thermal_hydraulics/test/tests/components/hs_boundary_heat_flux/plate.i
index b61197b4ae8c..1d734eac0707 100644
--- a/modules/thermal_hydraulics/test/tests/components/hs_boundary_heat_flux/plate.i
+++ b/modules/thermal_hydraulics/test/tests/components/hs_boundary_heat_flux/plate.i
@@ -22,9 +22,9 @@ E_change = ${fparse scale * heat_flux * A * t}
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [hs_mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     rho = ${density}
     cp = ${specific_heat_capacity}
     k = ${conductivity}
@@ -42,7 +42,8 @@ E_change = ${fparse scale * heat_flux * A * t}
     depth = ${depth}
     widths = '${thickness}'
     n_part_elems = '10'
-    materials = 'hs_mat'
+    solid_properties = 'hs_mat'
+    solid_properties_T_ref = '300'
     names = 'region'
 
     initial_T = ${T_hs}
diff --git a/modules/thermal_hydraulics/test/tests/components/hs_boundary_radiation/cylindrical.i b/modules/thermal_hydraulics/test/tests/components/hs_boundary_radiation/cylindrical.i
index a1bd58b965df..8c22a9fd9443 100644
--- a/modules/thermal_hydraulics/test/tests/components/hs_boundary_radiation/cylindrical.i
+++ b/modules/thermal_hydraulics/test/tests/components/hs_boundary_radiation/cylindrical.i
@@ -22,9 +22,9 @@ scale = 0.8
 power = ${fparse scale * heat_flux * A}
 E_change = ${fparse power * t}
 
-[HeatStructureMaterials]
+[SolidProperties]
   [hs_mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     rho = ${density}
     cp = ${specific_heat_capacity}
     k = ${conductivity}
@@ -42,7 +42,8 @@ E_change = ${fparse power * t}
     inner_radius = ${R_i}
     widths = '${thickness}'
     n_part_elems = '10'
-    materials = 'hs_mat'
+    solid_properties = 'hs_mat'
+    solid_properties_T_ref = '300'
     names = 'region'
 
     initial_T = ${T_hs}
diff --git a/modules/thermal_hydraulics/test/tests/components/hs_boundary_radiation/plate.i b/modules/thermal_hydraulics/test/tests/components/hs_boundary_radiation/plate.i
index 697a1f7f7199..201d153e271e 100644
--- a/modules/thermal_hydraulics/test/tests/components/hs_boundary_radiation/plate.i
+++ b/modules/thermal_hydraulics/test/tests/components/hs_boundary_radiation/plate.i
@@ -19,9 +19,9 @@ heat_flux = ${fparse stefan_boltzmann * emissivity * view_factor * (T_ambient^4
 scale = 0.8
 E_change = ${fparse scale * heat_flux * A * t}
 
-[HeatStructureMaterials]
+[SolidProperties]
   [hs_mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     rho = ${density}
     cp = ${specific_heat_capacity}
     k = ${conductivity}
@@ -39,7 +39,8 @@ E_change = ${fparse scale * heat_flux * A * t}
     depth = ${depth}
     widths = '${thickness}'
     n_part_elems = '10'
-    materials = 'hs_mat'
+    solid_properties = 'hs_mat'
+    solid_properties_T_ref = '300'
     names = 'region'
 
     initial_T = ${T_hs}
diff --git a/modules/thermal_hydraulics/test/tests/components/hs_boundary_specified_temperature/err.no_bnd.i b/modules/thermal_hydraulics/test/tests/components/hs_boundary_specified_temperature/err.no_bnd.i
index 25009c38e5d4..08d18cabf52c 100644
--- a/modules/thermal_hydraulics/test/tests/components/hs_boundary_specified_temperature/err.no_bnd.i
+++ b/modules/thermal_hydraulics/test/tests/components/hs_boundary_specified_temperature/err.no_bnd.i
@@ -1,6 +1,6 @@
-[HeatStructureMaterials]
+[SolidProperties]
   [hs_mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     rho = 1
     cp = 2
     k = 3
@@ -18,7 +18,8 @@
     names = 'blk'
     widths = '0.1'
     n_part_elems = '1'
-    materials = 'hs_mat'
+    solid_properties = 'hs_mat'
+    solid_properties_T_ref = '300'
 
     initial_T = 300
   []
diff --git a/modules/thermal_hydraulics/test/tests/components/shaft_connected_motor/clg.test.i b/modules/thermal_hydraulics/test/tests/components/shaft_connected_motor/clg.test.i
index 9e010773525a..0cf5e628e0bf 100644
--- a/modules/thermal_hydraulics/test/tests/components/shaft_connected_motor/clg.test.i
+++ b/modules/thermal_hydraulics/test/tests/components/shaft_connected_motor/clg.test.i
@@ -14,9 +14,9 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     rho = 1
     cp = 1
     k = 1
@@ -46,7 +46,8 @@
     names = '0'
     n_part_elems = 1
     widths = '1'
-    materials = 'mat'
+    solid_properties = 'mat'
+    solid_properties_T_ref = '300'
 
     initial_T = 300
   []
diff --git a/modules/thermal_hydraulics/test/tests/components/shaft_connected_motor/test.i b/modules/thermal_hydraulics/test/tests/components/shaft_connected_motor/test.i
index 7d0713fe9e51..1615e3c01cde 100644
--- a/modules/thermal_hydraulics/test/tests/components/shaft_connected_motor/test.i
+++ b/modules/thermal_hydraulics/test/tests/components/shaft_connected_motor/test.i
@@ -1,6 +1,6 @@
-[HeatStructureMaterials]
+[SolidProperties]
   [mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     rho = 1
     cp = 1
     k = 1
@@ -29,7 +29,8 @@
     names = '0'
     n_part_elems = 1
     widths = '1'
-    materials = 'mat'
+    solid_properties = 'mat'
+    solid_properties_T_ref = '300'
   []
 []
 
diff --git a/modules/thermal_hydraulics/test/tests/components/total_power/clg.power.i b/modules/thermal_hydraulics/test/tests/components/total_power/clg.power.i
index 8b3a4b868921..a55426d28214 100644
--- a/modules/thermal_hydraulics/test/tests/components/total_power/clg.power.i
+++ b/modules/thermal_hydraulics/test/tests/components/total_power/clg.power.i
@@ -14,9 +14,9 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 1
     cp = 1
     rho = 1
@@ -39,7 +39,8 @@
     names = '0'
     widths = '1'
     n_part_elems = '1'
-    materials = 'mat'
+    solid_properties = 'mat'
+    solid_properties_T_ref = '300'
   []
 []
 
diff --git a/modules/thermal_hydraulics/test/tests/components/total_power/phy.constant_power.i b/modules/thermal_hydraulics/test/tests/components/total_power/phy.constant_power.i
index 2ae2e41342bc..1efd0d3501d7 100644
--- a/modules/thermal_hydraulics/test/tests/components/total_power/phy.constant_power.i
+++ b/modules/thermal_hydraulics/test/tests/components/total_power/phy.constant_power.i
@@ -1,6 +1,6 @@
-[HeatStructureMaterials]
+[SolidProperties]
   [mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 1
     cp = 1
     rho = 1
@@ -23,7 +23,8 @@
     names = '0'
     widths = '1'
     n_part_elems = '1'
-    materials = 'mat'
+    solid_properties = 'mat'
+    solid_properties_T_ref = '300'
   []
 []
 
diff --git a/modules/thermal_hydraulics/test/tests/interfaces/discrete_line_segment_interface/discrete_line_segment_interface.i b/modules/thermal_hydraulics/test/tests/interfaces/discrete_line_segment_interface/discrete_line_segment_interface.i
index c06ad99e32e3..4a5e48a5da47 100644
--- a/modules/thermal_hydraulics/test/tests/interfaces/discrete_line_segment_interface/discrete_line_segment_interface.i
+++ b/modules/thermal_hydraulics/test/tests/interfaces/discrete_line_segment_interface/discrete_line_segment_interface.i
@@ -21,9 +21,9 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [hs_mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 1
     cp = 1
     rho = 1
@@ -43,7 +43,8 @@
     names = 'region1 region2 region3'
     widths = '1.0 3.0 2.0'
     n_part_elems = '2 6 8'
-    materials = 'hs_mat hs_mat hs_mat'
+    solid_properties = 'hs_mat hs_mat hs_mat'
+    solid_properties_T_ref = '300 300 300'
 
     initial_T = 300
   []
diff --git a/modules/thermal_hydraulics/test/tests/jacobians/materials/tests b/modules/thermal_hydraulics/test/tests/jacobians/materials/tests
index 321164ad5e28..315ec1bea6e3 100644
--- a/modules/thermal_hydraulics/test/tests/jacobians/materials/tests
+++ b/modules/thermal_hydraulics/test/tests/jacobians/materials/tests
@@ -7,6 +7,7 @@
     max_threads = 1
     max_parallel = 1
     allow_test_objects = true
+    no_error_deprecated = true
     issues = '#20662'
     design = 'ADSolidMaterial.md'
     requirement = 'The system shall be able to use the material property system to define solid properties for a solid energy equation.'
diff --git a/modules/thermal_hydraulics/test/tests/misc/initial_from_file/heat_structure/steady_state.i b/modules/thermal_hydraulics/test/tests/misc/initial_from_file/heat_structure/steady_state.i
index b5325220ccad..456973ede95e 100644
--- a/modules/thermal_hydraulics/test/tests/misc/initial_from_file/heat_structure/steady_state.i
+++ b/modules/thermal_hydraulics/test/tests/misc/initial_from_file/heat_structure/steady_state.i
@@ -1,6 +1,6 @@
-[HeatStructureMaterials]
+[SolidProperties]
   [mat1]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 16
     cp = 356.
     rho = 6.551400E+03
@@ -23,7 +23,8 @@
     n_elems = 3
     names = 'wall'
     n_part_elems = 1
-    materials = 'mat1'
+    solid_properties = 'mat1'
+    solid_properties_T_ref = '300'
     widths = 0.1
     initial_T = Ts_init
   []
diff --git a/modules/thermal_hydraulics/test/tests/misc/initial_from_file/heat_structure/test.i b/modules/thermal_hydraulics/test/tests/misc/initial_from_file/heat_structure/test.i
index 3aefd0870f42..4f012f4e5ba8 100644
--- a/modules/thermal_hydraulics/test/tests/misc/initial_from_file/heat_structure/test.i
+++ b/modules/thermal_hydraulics/test/tests/misc/initial_from_file/heat_structure/test.i
@@ -4,9 +4,9 @@
   initial_from_file = 'steady_state_out.e'
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [mat1]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 16
     cp = 356.
     rho = 6.551400E+03
@@ -29,7 +29,8 @@
     n_elems = 3
     names = 'wall'
     n_part_elems = 1
-    materials = 'mat1'
+    solid_properties = 'mat1'
+    solid_properties_T_ref = '300'
     widths = 0.1
   []
 
diff --git a/modules/thermal_hydraulics/test/tests/misc/initial_from_file/heat_transfer_from_heat_structure/steady_state.i b/modules/thermal_hydraulics/test/tests/misc/initial_from_file/heat_transfer_from_heat_structure/steady_state.i
index 56b5efc47485..faf00ab325b1 100644
--- a/modules/thermal_hydraulics/test/tests/misc/initial_from_file/heat_transfer_from_heat_structure/steady_state.i
+++ b/modules/thermal_hydraulics/test/tests/misc/initial_from_file/heat_transfer_from_heat_structure/steady_state.i
@@ -28,9 +28,9 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [mat1]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 16
     cp = 356.
     rho = 6.551400E+03
@@ -66,7 +66,8 @@
     n_elems = 3
     names = 'wall'
     n_part_elems = 1
-    materials = 'mat1'
+    solid_properties = 'mat1'
+    solid_properties_T_ref = '300'
     inner_radius = 0.01
     widths = 0.1
     initial_T = Ts_init
diff --git a/modules/thermal_hydraulics/test/tests/misc/initial_from_file/heat_transfer_from_heat_structure/test.i b/modules/thermal_hydraulics/test/tests/misc/initial_from_file/heat_transfer_from_heat_structure/test.i
index dcb381870a69..ac89d8fbd387 100644
--- a/modules/thermal_hydraulics/test/tests/misc/initial_from_file/heat_transfer_from_heat_structure/test.i
+++ b/modules/thermal_hydraulics/test/tests/misc/initial_from_file/heat_transfer_from_heat_structure/test.i
@@ -28,9 +28,9 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [mat1]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 16
     cp = 356.
     rho = 6.551400E+03
@@ -66,7 +66,8 @@
     n_elems = 3
     names = 'wall'
     n_part_elems = 1
-    materials = 'mat1'
+    solid_properties = 'mat1'
+    solid_properties_T_ref = '300'
     inner_radius = 0.01
     widths = 0.1
   []
diff --git a/modules/thermal_hydraulics/test/tests/misc/initial_from_file/shaft/steady_state.i b/modules/thermal_hydraulics/test/tests/misc/initial_from_file/shaft/steady_state.i
index 3ba9e8ed7e95..c4b0a53e9ab2 100644
--- a/modules/thermal_hydraulics/test/tests/misc/initial_from_file/shaft/steady_state.i
+++ b/modules/thermal_hydraulics/test/tests/misc/initial_from_file/shaft/steady_state.i
@@ -1,6 +1,6 @@
-[HeatStructureMaterials]
+[SolidProperties]
   [mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     rho = 1
     cp = 1
     k = 1
@@ -30,7 +30,8 @@
     names = '0'
     n_part_elems = 1
     widths = '1'
-    materials = 'mat'
+    solid_properties = 'mat'
+    solid_properties_T_ref = '300'
 
     initial_T = 300
   []
diff --git a/modules/thermal_hydraulics/test/tests/misc/initial_from_file/shaft/test.i b/modules/thermal_hydraulics/test/tests/misc/initial_from_file/shaft/test.i
index 2e9d4f92411c..322a3c21814d 100644
--- a/modules/thermal_hydraulics/test/tests/misc/initial_from_file/shaft/test.i
+++ b/modules/thermal_hydraulics/test/tests/misc/initial_from_file/shaft/test.i
@@ -2,9 +2,9 @@
   initial_from_file = 'steady_state_out.e'
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     rho = 1
     cp = 1
     k = 1
@@ -33,7 +33,8 @@
     names = '0'
     n_part_elems = 1
     widths = '1'
-    materials = 'mat'
+    solid_properties = 'mat'
+    solid_properties_T_ref = '300'
   []
 []
 
diff --git a/modules/thermal_hydraulics/test/tests/misc/mesh_only/test.i b/modules/thermal_hydraulics/test/tests/misc/mesh_only/test.i
index db41062ba5d5..f73328fbe26b 100644
--- a/modules/thermal_hydraulics/test/tests/misc/mesh_only/test.i
+++ b/modules/thermal_hydraulics/test/tests/misc/mesh_only/test.i
@@ -28,9 +28,9 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [hs_mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
      rho = 1
      cp = 1
      k = 1
@@ -59,7 +59,8 @@
     length = 1
     depth = 0.1
     names = 'blk'
-    materials = 'hs_mat'
+    solid_properties = 'hs_mat'
+    solid_properties_T_ref = '300'
     n_part_elems = 1
     widths = '0.1'
   []
@@ -85,7 +86,8 @@
     length = 1
     depth = 0.1
     names = 'blk'
-    materials = 'hs_mat'
+    solid_properties = 'hs_mat'
+    solid_properties_T_ref = '300'
     n_part_elems = 1
     widths = '0.1'
   []
@@ -111,7 +113,8 @@
     length = 1
     depth = 0.1
     names = 'blk'
-    materials = 'hs_mat'
+    solid_properties = 'hs_mat'
+    solid_properties_T_ref = '300'
     n_part_elems = 1
     widths = '0.1'
   []
diff --git a/modules/thermal_hydraulics/test/tests/misc/restart_1phase/test.i b/modules/thermal_hydraulics/test/tests/misc/restart_1phase/test.i
index 475b0d67301a..10d4811e9ac4 100644
--- a/modules/thermal_hydraulics/test/tests/misc/restart_1phase/test.i
+++ b/modules/thermal_hydraulics/test/tests/misc/restart_1phase/test.i
@@ -21,9 +21,9 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [mat1]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 16
     cp = 356.
     rho = 6.551400E+03
@@ -99,7 +99,8 @@
     n_elems = 5
     names = '0'
     n_part_elems = 1
-    materials = 'mat1'
+    solid_properties = 'mat1'
+    solid_properties_T_ref = '300'
     widths = 0.1
   []
 
diff --git a/modules/thermal_hydraulics/test/tests/misc/surrogate_power_profile/surrogate_power_profile.i b/modules/thermal_hydraulics/test/tests/misc/surrogate_power_profile/surrogate_power_profile.i
index e0d042c84bae..4412747c6861 100644
--- a/modules/thermal_hydraulics/test/tests/misc/surrogate_power_profile/surrogate_power_profile.i
+++ b/modules/thermal_hydraulics/test/tests/misc/surrogate_power_profile/surrogate_power_profile.i
@@ -32,21 +32,21 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [fuel-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 2.5
     cp = 300.
     rho = 1.032e4
   []
   [gap-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 0.6
     cp = 1.
     rho = 1.
   []
   [clad-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 21.5
     cp = 350.
     rho = 6.55e3
@@ -78,7 +78,8 @@
     names = 'fuel gap clad'
     widths = '0.004096 0.0001 0.000552'
     n_part_elems = '5 1 2'
-    materials = 'fuel-mat gap-mat clad-mat'
+    solid_properties = 'fuel-mat gap-mat clad-mat'
+    solid_properties_T_ref = '300 300 300'
   []
 
   [CCH1:hx]
diff --git a/modules/thermal_hydraulics/test/tests/misc/uniform_refine/test.i b/modules/thermal_hydraulics/test/tests/misc/uniform_refine/test.i
index 837f7c5f9664..6605894063a7 100644
--- a/modules/thermal_hydraulics/test/tests/misc/uniform_refine/test.i
+++ b/modules/thermal_hydraulics/test/tests/misc/uniform_refine/test.i
@@ -29,9 +29,9 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [mat1]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     rho = 10
     cp = 1
     k = 1
@@ -87,7 +87,8 @@
     names = '0'
     widths = 0.5
     n_part_elems = '1'
-    materials = 'mat1'
+    solid_properties = 'mat1'
+    solid_properties_T_ref = '300'
   []
 []
 
diff --git a/modules/thermal_hydraulics/test/tests/output/paraview_component_annotation_map/test.i b/modules/thermal_hydraulics/test/tests/output/paraview_component_annotation_map/test.i
index 22b01d507b4a..de6c0f80dfef 100644
--- a/modules/thermal_hydraulics/test/tests/output/paraview_component_annotation_map/test.i
+++ b/modules/thermal_hydraulics/test/tests/output/paraview_component_annotation_map/test.i
@@ -23,9 +23,9 @@
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [m]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     rho = 1
     cp = 1
     k = 1
@@ -60,7 +60,8 @@
     n_elems = 10
     names = '1 2'
     widths = '0.2 0.3'
-    materials = 'm m'
+    solid_properties = 'm m'
+    solid_properties_T_ref = '300 300'
     n_part_elems = '1 1'
     rotation = 90
   []
@@ -94,7 +95,8 @@
     n_elems = '5 5'
     names = '1 2'
     widths = '0.2 0.3'
-    materials = 'm m'
+    solid_properties = 'm m'
+    solid_properties_T_ref = '300 300'
     n_part_elems = '1 1'
     rotation = 270
   []
diff --git a/modules/thermal_hydraulics/test/tests/postprocessors/function_side_integral_rz/function_side_integral_rz.i b/modules/thermal_hydraulics/test/tests/postprocessors/function_side_integral_rz/function_side_integral_rz.i
index 13871b3b42b5..5460752cf39e 100644
--- a/modules/thermal_hydraulics/test/tests/postprocessors/function_side_integral_rz/function_side_integral_rz.i
+++ b/modules/thermal_hydraulics/test/tests/postprocessors/function_side_integral_rz/function_side_integral_rz.i
@@ -10,9 +10,9 @@ S = ${fparse 2 * pi * R_o * L}
 Q = 5000
 q = ${fparse Q / S}
 
-[HeatStructureMaterials]
+[SolidProperties]
   [region1-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 1
     cp = 1
     rho = 1
@@ -37,7 +37,8 @@ q = ${fparse Q / S}
     n_elems = 50
 
     names = 'region1'
-    materials = 'region1-mat'
+    solid_properties = 'region1-mat'
+    solid_properties_T_ref = '300'
     widths = '${thickness}'
     n_part_elems = '5'
 
diff --git a/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_convection/heat_rate_convection.i b/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_convection/heat_rate_convection.i
index 55fc90bc2987..59e6fdc40678 100644
--- a/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_convection/heat_rate_convection.i
+++ b/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_convection/heat_rate_convection.i
@@ -10,9 +10,9 @@ T = 300
 T_ambient = 350
 htc = ${fparse Q / (S * (T_ambient - T))}
 
-[HeatStructureMaterials]
+[SolidProperties]
   [region1-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 1
     cp = 1
     rho = 1
@@ -31,7 +31,8 @@ htc = ${fparse Q / (S * (T_ambient - T))}
     depth = ${depth}
 
     names = 'region1'
-    materials = 'region1-mat'
+    solid_properties = 'region1-mat'
+    solid_properties_T_ref = '300'
     widths = '${thickness}'
     n_part_elems = '5'
 
diff --git a/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_convection_rz/heat_rate_convection_rz.i b/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_convection_rz/heat_rate_convection_rz.i
index c824891b7970..4794bbca3c21 100644
--- a/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_convection_rz/heat_rate_convection_rz.i
+++ b/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_convection_rz/heat_rate_convection_rz.i
@@ -12,9 +12,9 @@ T = 300
 T_ambient = 350
 htc = ${fparse Q / (S * (T_ambient - T))}
 
-[HeatStructureMaterials]
+[SolidProperties]
   [region1-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 1
     cp = 1
     rho = 1
@@ -32,7 +32,8 @@ htc = ${fparse Q / (S * (T_ambient - T))}
     n_elems = 50
 
     names = 'region1'
-    materials = 'region1-mat'
+    solid_properties = 'region1-mat'
+    solid_properties_T_ref = '300'
     widths = '${thickness}'
     n_part_elems = '5'
 
diff --git a/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_external_app_convection_rz/heat_rate_external_app_convection_rz.i b/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_external_app_convection_rz/heat_rate_external_app_convection_rz.i
index df33d02bbdb1..a4d6415e6ea0 100644
--- a/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_external_app_convection_rz/heat_rate_external_app_convection_rz.i
+++ b/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_external_app_convection_rz/heat_rate_external_app_convection_rz.i
@@ -21,9 +21,9 @@ htc = ${fparse Q / (S * (T_ambient - T))}
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [region1-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 1
     cp = 1
     rho = 1
@@ -41,7 +41,8 @@ htc = ${fparse Q / (S * (T_ambient - T))}
     n_elems = 50
 
     names = 'region1'
-    materials = 'region1-mat'
+    solid_properties = 'region1-mat'
+    solid_properties_T_ref = '300'
     widths = '${thickness}'
     n_part_elems = '5'
 
diff --git a/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_heat_flux/heat_rate_heat_flux.i b/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_heat_flux/heat_rate_heat_flux.i
index 3135cf83c265..d8bffdd89567 100644
--- a/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_heat_flux/heat_rate_heat_flux.i
+++ b/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_heat_flux/heat_rate_heat_flux.i
@@ -9,9 +9,9 @@ S = ${fparse depth * L}
 Q = 5000
 q = ${fparse Q / S}
 
-[HeatStructureMaterials]
+[SolidProperties]
   [region1-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 1
     cp = 1
     rho = 1
@@ -28,7 +28,8 @@ q = ${fparse Q / S}
     n_elems = 50
 
     names = 'region1'
-    materials = 'region1-mat'
+    solid_properties = 'region1-mat'
+    solid_properties_T_ref = '300'
     widths = '${thickness}'
     n_part_elems = '5'
 
diff --git a/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_heat_flux_rz/heat_rate_heat_flux_rz.i b/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_heat_flux_rz/heat_rate_heat_flux_rz.i
index 68e3ca92f538..33d8bcfa0e39 100644
--- a/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_heat_flux_rz/heat_rate_heat_flux_rz.i
+++ b/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_heat_flux_rz/heat_rate_heat_flux_rz.i
@@ -10,9 +10,9 @@ S = ${fparse 2 * pi * R_o * L}
 Q = 5000
 q = ${fparse Q / S}
 
-[HeatStructureMaterials]
+[SolidProperties]
   [region1-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 1
     cp = 1
     rho = 1
@@ -30,7 +30,8 @@ q = ${fparse Q / S}
     n_elems = 50
 
     names = 'region1'
-    materials = 'region1-mat'
+    solid_properties = 'region1-mat'
+    solid_properties_T_ref = '300'
     widths = '${thickness}'
     n_part_elems = '5'
 
diff --git a/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_radiation/heat_rate_radiation.i b/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_radiation/heat_rate_radiation.i
index 3184d33a6f2f..8e6ed028d67c 100644
--- a/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_radiation/heat_rate_radiation.i
+++ b/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_radiation/heat_rate_radiation.i
@@ -11,9 +11,9 @@ T_ambient = 350
 sigma = 5.670367e-8
 emissivity = ${fparse Q / (S * sigma * (T_ambient^4 - T^4))}
 
-[HeatStructureMaterials]
+[SolidProperties]
   [region1-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 1
     cp = 1
     rho = 1
@@ -32,7 +32,8 @@ emissivity = ${fparse Q / (S * sigma * (T_ambient^4 - T^4))}
     depth = ${depth}
 
     names = 'region1'
-    materials = 'region1-mat'
+    solid_properties = 'region1-mat'
+    solid_properties_T_ref = '300'
     widths = '${thickness}'
     n_part_elems = '5'
 
diff --git a/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_radiation_rz/heat_rate_radiation_rz.i b/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_radiation_rz/heat_rate_radiation_rz.i
index f2e6ce09b01a..32957b8e2137 100644
--- a/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_radiation_rz/heat_rate_radiation_rz.i
+++ b/modules/thermal_hydraulics/test/tests/postprocessors/heat_rate_radiation_rz/heat_rate_radiation_rz.i
@@ -13,9 +13,9 @@ T_ambient = 350
 sigma = 5.670367e-8
 emissivity = ${fparse Q / (S * sigma * (T_ambient^4 - T^4))}
 
-[HeatStructureMaterials]
+[SolidProperties]
   [region1-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 1
     cp = 1
     rho = 1
@@ -33,7 +33,8 @@ emissivity = ${fparse Q / (S * sigma * (T_ambient^4 - T^4))}
     n_elems = 50
 
     names = 'region1'
-    materials = 'region1-mat'
+    solid_properties = 'region1-mat'
+    solid_properties_T_ref = '300'
     widths = '${thickness}'
     n_part_elems = '5'
 
diff --git a/modules/thermal_hydraulics/test/tests/postprocessors/heat_structure_energy/heat_structure_energy_cylinder.i b/modules/thermal_hydraulics/test/tests/postprocessors/heat_structure_energy/heat_structure_energy_cylinder.i
index 30d60f805da1..58385ae44e3e 100644
--- a/modules/thermal_hydraulics/test/tests/postprocessors/heat_structure_energy/heat_structure_energy_cylinder.i
+++ b/modules/thermal_hydraulics/test/tests/postprocessors/heat_structure_energy/heat_structure_energy_cylinder.i
@@ -26,15 +26,15 @@
 #
 # Finally, n_units * 2 pi * rho2 * cp2 * int(T * y) = 7.930950653987433e+04
 
-[HeatStructureMaterials]
+[SolidProperties]
   [region1-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 1
     cp = 1
     rho = 1
   []
   [region2-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 1
     cp = 5
     rho = 3
@@ -60,7 +60,8 @@
     n_elems = 50
 
     names = 'region1 region2'
-    materials = 'region1-mat region2-mat'
+    solid_properties = 'region1-mat region2-mat'
+    solid_properties_T_ref = '300 300'
     widths = '4.0 3.0'
     n_part_elems = '5 50'
 
diff --git a/modules/thermal_hydraulics/test/tests/postprocessors/heat_structure_energy/heat_structure_energy_plate.i b/modules/thermal_hydraulics/test/tests/postprocessors/heat_structure_energy/heat_structure_energy_plate.i
index 15bbf032eb26..50d4ac93ab1c 100644
--- a/modules/thermal_hydraulics/test/tests/postprocessors/heat_structure_energy/heat_structure_energy_plate.i
+++ b/modules/thermal_hydraulics/test/tests/postprocessors/heat_structure_energy/heat_structure_energy_plate.i
@@ -29,15 +29,15 @@
 # For a test variation using a reference temperature of T_ref = 0.5,
 # rho2 * cp2 * int(T - T_ref) * P = 864.
 
-[HeatStructureMaterials]
+[SolidProperties]
   [region1-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 1
     cp = 1
     rho = 1
   []
   [region2-mat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 1
     cp = 5
     rho = 3
@@ -62,7 +62,8 @@
     n_elems = 5
 
     names = 'region1 region2'
-    materials = 'region1-mat region2-mat'
+    solid_properties = 'region1-mat region2-mat'
+    solid_properties_T_ref = '300 300'
     widths = '4.0 3.0'
     n_part_elems = '5 5'
 
diff --git a/modules/thermal_hydraulics/test/tests/postprocessors/side_flux_integral_rz/side_flux_integral_rz.i b/modules/thermal_hydraulics/test/tests/postprocessors/side_flux_integral_rz/side_flux_integral_rz.i
index d216c6405869..53d7f4e995ac 100644
--- a/modules/thermal_hydraulics/test/tests/postprocessors/side_flux_integral_rz/side_flux_integral_rz.i
+++ b/modules/thermal_hydraulics/test/tests/postprocessors/side_flux_integral_rz/side_flux_integral_rz.i
@@ -30,9 +30,9 @@ R_i = 1.0
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [hsmat]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 5
     cp = 1
     rho = 1
@@ -51,7 +51,8 @@ R_i = 1.0
 
     inner_radius = ${R_i}
     names = 'radial1 radial2'
-    materials = 'hsmat hsmat'
+    solid_properties = 'hsmat hsmat'
+    solid_properties_T_ref = '300 300'
     widths = '0.5 0.7'
     n_part_elems = '2 3'
 
diff --git a/modules/thermal_hydraulics/test/tests/problems/brayton_cycle/recuperated_brayton_cycle.i b/modules/thermal_hydraulics/test/tests/problems/brayton_cycle/recuperated_brayton_cycle.i
index e956aee55c06..9919eb431edc 100644
--- a/modules/thermal_hydraulics/test/tests/problems/brayton_cycle/recuperated_brayton_cycle.i
+++ b/modules/thermal_hydraulics/test/tests/problems/brayton_cycle/recuperated_brayton_cycle.i
@@ -152,9 +152,9 @@ hs_power = 105750
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [steel]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     rho = 8050
     k = 45
     cp = 466
@@ -472,7 +472,8 @@ hs_power = 105750
     n_elems = ${fparse n_elems3/2}
     n_part_elems = 2
     names = recuperator
-    materials = steel
+    solid_properties = steel
+    solid_properties_T_ref = '300'
     inner_radius = ${D1}
   []
   # heat transfer from recuperator to cold leg
@@ -532,7 +533,8 @@ hs_power = 105750
     n_elems = ${n_elems4}
     n_part_elems = 2
     names = core
-    materials = steel
+    solid_properties = steel
+    solid_properties_T_ref = '300'
   []
   [total_power]
     type = TotalPower
diff --git a/modules/thermal_hydraulics/test/tests/userobjects/layered_avg_rz/test.i b/modules/thermal_hydraulics/test/tests/userobjects/layered_avg_rz/test.i
index ebb4e701eb50..c6d10c113e2b 100644
--- a/modules/thermal_hydraulics/test/tests/userobjects/layered_avg_rz/test.i
+++ b/modules/thermal_hydraulics/test/tests/userobjects/layered_avg_rz/test.i
@@ -33,21 +33,21 @@ length = 4
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [mat1]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 2.5
     cp = 300.
     rho = 1.032e4
   []
   [mat2]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 0.6
     cp = 1.
     rho = 1.
   []
   [mat3]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     k = 21.5
     cp = 350.
     rho = 6.55e3
@@ -67,7 +67,8 @@ length = 4
     names = '1 2 3'
     widths = '0.004 0.0001 0.0005'
     n_part_elems = '10 1 2'
-    materials = 'mat1 mat2 mat3'
+    solid_properties = 'mat1 mat2 mat3'
+    solid_properties_T_ref = '300 300 300'
   []
 []
 
diff --git a/modules/thermal_hydraulics/tutorials/single_phase_flow/02_core.i b/modules/thermal_hydraulics/tutorials/single_phase_flow/02_core.i
index ff688878eb2f..29b2ffaff8d1 100644
--- a/modules/thermal_hydraulics/tutorials/single_phase_flow/02_core.i
+++ b/modules/thermal_hydraulics/tutorials/single_phase_flow/02_core.i
@@ -41,9 +41,9 @@ tot_power = 2000 # W
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [steel]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     rho = 8050
     k = 45
     cp = 466
@@ -81,7 +81,8 @@ tot_power = 2000 # W
     n_elems = ${core_n_elems}
     names = 'block'
     widths = '${fparse core_dia / 2.}'
-    materials = 'steel'
+    solid_properties = 'steel'
+    solid_properties_T_ref = '300'
     n_part_elems = 3
   []
 
diff --git a/modules/thermal_hydraulics/tutorials/single_phase_flow/03_upper_loop.i b/modules/thermal_hydraulics/tutorials/single_phase_flow/03_upper_loop.i
index 310a7b84784f..c77ab09e1dee 100644
--- a/modules/thermal_hydraulics/tutorials/single_phase_flow/03_upper_loop.i
+++ b/modules/thermal_hydraulics/tutorials/single_phase_flow/03_upper_loop.i
@@ -53,9 +53,9 @@ tot_power = 2000 # W
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [steel]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     rho = 8050
     k = 45
     cp = 466
@@ -109,7 +109,8 @@ tot_power = 2000 # W
     n_elems = ${core_n_elems}
     names = 'block'
     widths = '${fparse core_dia / 2.}'
-    materials = 'steel'
+    solid_properties = 'steel'
+    solid_properties_T_ref = '300'
     n_part_elems = 3
   []
 
diff --git a/modules/thermal_hydraulics/tutorials/single_phase_flow/04_loop.i b/modules/thermal_hydraulics/tutorials/single_phase_flow/04_loop.i
index 869f87a3d734..50381762836c 100644
--- a/modules/thermal_hydraulics/tutorials/single_phase_flow/04_loop.i
+++ b/modules/thermal_hydraulics/tutorials/single_phase_flow/04_loop.i
@@ -53,9 +53,9 @@ tot_power = 2000 # W
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [steel]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     rho = 8050
     k = 45
     cp = 466
@@ -102,7 +102,8 @@ tot_power = 2000 # W
     n_elems = ${core_n_elems}
     names = 'block'
     widths = '${fparse core_dia / 2.}'
-    materials = 'steel'
+    solid_properties = 'steel'
+    solid_properties_T_ref = '300'
     n_part_elems = 3
   []
 
diff --git a/modules/thermal_hydraulics/tutorials/single_phase_flow/05_secondary_side.i b/modules/thermal_hydraulics/tutorials/single_phase_flow/05_secondary_side.i
index 44f02eee161a..a8bc67f51003 100644
--- a/modules/thermal_hydraulics/tutorials/single_phase_flow/05_secondary_side.i
+++ b/modules/thermal_hydraulics/tutorials/single_phase_flow/05_secondary_side.i
@@ -81,9 +81,9 @@ m_dot_sec_in = 1. # kg/s
   []
 []
 
-[HeatStructureMaterials]
+[SolidProperties]
   [steel]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     rho = 8050
     k = 45
     cp = 466
@@ -130,7 +130,8 @@ m_dot_sec_in = 1. # kg/s
     n_elems = ${core_n_elems}
     names = 'block'
     widths = '${fparse core_dia / 2.}'
-    materials = 'steel'
+    solid_properties = 'steel'
+    solid_properties_T_ref = '300'
     n_part_elems = 3
   []
 
@@ -264,7 +265,8 @@ m_dot_sec_in = 1. # kg/s
       n_elems = ${hx_n_elems}
       widths = '${hx_wall_thickness}'
       n_part_elems = '3'
-      materials = 'steel'
+      solid_properties = 'steel'
+      solid_properties_T_ref = '300'
       names = '0'
       inner_radius = '${fparse hx_dia_inner / 2.}'
     []
diff --git a/modules/thermal_hydraulics/tutorials/single_phase_flow/06_custom_closures.i b/modules/thermal_hydraulics/tutorials/single_phase_flow/06_custom_closures.i
index c8a30f431efb..bd192b5dd039 100644
--- a/modules/thermal_hydraulics/tutorials/single_phase_flow/06_custom_closures.i
+++ b/modules/thermal_hydraulics/tutorials/single_phase_flow/06_custom_closures.i
@@ -129,9 +129,9 @@ m_dot_sec_in = 1. # kg/s
     block = hx/pri
   []
 []
-[HeatStructureMaterials]
+[SolidProperties]
   [steel]
-    type = SolidMaterialProperties
+    type = ThermalFunctionSolidProperties
     rho = 8050
     k = 45
     cp = 466
@@ -178,7 +178,8 @@ m_dot_sec_in = 1. # kg/s
     n_elems = ${core_n_elems}
     names = 'block'
     widths = '${fparse core_dia / 2.}'
-    materials = 'steel'
+    solid_properties = 'steel'
+    solid_properties_T_ref = '300'
     n_part_elems = 3
   []
 
@@ -313,7 +314,8 @@ m_dot_sec_in = 1. # kg/s
       n_elems = ${hx_n_elems}
       widths = '${hx_wall_thickness}'
       n_part_elems = '3'
-      materials = 'steel'
+      solid_properties = 'steel'
+      solid_properties_T_ref = '300'
       names = '0'
       inner_radius = '${fparse hx_dia_inner / 2.}'
     []