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ACI-ASTM CA40 Steel vs. Zinc Selenide

ACI-ASTM CA40 steel and zinc selenide belong to fundamentally different material chemistries. ACI-ASTM CA40 steel is a metal, while zinc selenide is a ceramic material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 10 material properties with values for both materials. Properties with values for just one material (24, in this case) are not shown.

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

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 7.7
5.3
Elastic (Young's, Tensile) Modulus, GPa 190
69
Melting Onset (Solidus), °C 1500
1520
Poisson's Ratio 0.28
0.28
Specific Heat Capacity, J/kg-K 480
340
Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 25
26
Thermal Conductivity, W/m-K 25
17
Thermal Diffusivity, mm2/s 6.7
9.5
Thermal Expansion, µm/m-K 10
7.3