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ACI-ASTM CA40 Steel vs. Cordierite

ACI-ASTM CA40 steel and cordierite belong to fundamentally different material chemistries. ACI-ASTM CA40 steel is a metal, while cordierite is a ceramic material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 13 material properties with values for both materials. Properties with values for just one material (26, 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 cordierite.

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

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
62
Tensile Strength: Ultimate (UTS), MPa 910
190

Thermal Properties

Maximum Temperature: Mechanical, °C 750
1150
Specific Heat Capacity, J/kg-K 480
800 to 850
Thermal Conductivity, W/m-K 25
1.3 to 1.7
Thermal Expansion, µm/m-K 10
2.9 to 4.8

Otherwise Unclassified Properties

Density, g/cm3 7.7
2.0 to 2.2

Common Calculations

Stiffness to Weight: Axial, points 14
15 to 17
Stiffness to Weight: Bending, points 25
59 to 67
Strength to Weight: Axial, points 33
24 to 27
Strength to Weight: Bending, points 27
33 to 38
Thermal Diffusivity, mm2/s 6.7
0.74 to 1.0
Thermal Shock Resistance, points 33
47 to 78