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ACI-ASTM CA40 Steel vs. Calcium Fluoride

ACI-ASTM CA40 steel and calcium fluoride belong to fundamentally different material chemistries. ACI-ASTM CA40 steel is a metal, while calcium fluoride is a ceramic material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 11 material properties with values for both materials. Properties with values for just one material (24, 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 calcium fluoride.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
80
Poisson's Ratio 0.28
0.26
Shear Modulus, GPa 76
34

Thermal Properties

Melting Onset (Solidus), °C 1500
1420
Specific Heat Capacity, J/kg-K 480
860
Thermal Conductivity, W/m-K 25
9.7
Thermal Expansion, µm/m-K 10
19

Otherwise Unclassified Properties

Density, g/cm3 7.7
3.2

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
45
Thermal Diffusivity, mm2/s 6.7
3.5