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ACI-ASTM CA40 Steel vs. Sandstone

ACI-ASTM CA40 steel and sandstone belong to fundamentally different material chemistries. ACI-ASTM CA40 steel is a metal, while sandstone is a ceramic material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 15 material properties with values for both materials. Properties with values for just one material (19, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is ACI-ASTM CA40 steel and the bottom bar is sandstone.

ACI-ASTM CA40 (SCS2A, J91153) Cast Stainless SteelSandstone
Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
38
Poisson's Ratio 0.28
0.25
Shear Modulus, GPa 76
15
Tensile Strength: Ultimate (UTS), MPa 910
4.0

Thermal Properties

Maximum Temperature: Mechanical, °C 750
400
Specific Heat Capacity, J/kg-K 480
880
Thermal Conductivity, W/m-K 25
5.6
Thermal Expansion, µm/m-K 10
10

Otherwise Unclassified Properties

Density, g/cm3 7.7
2.6

Common Calculations

Stiffness to Weight: Axial, points 14
8.1
Stiffness to Weight: Bending, points 25
43
Strength to Weight: Axial, points 33
0.43
Strength to Weight: Bending, points 27
2.1
Thermal Diffusivity, mm2/s 6.7
2.4
Thermal Shock Resistance, points 33
0.75