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7075 Aluminum vs. Zinc Selenide

7075 aluminum and zinc selenide belong to fundamentally different material chemistries. 7075 aluminum 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 (23, in this case) are not shown.

For each property being compared, the top bar is 7075 aluminum and the bottom bar is zinc selenide.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 3.0
5.3
Elastic (Young's, Tensile) Modulus, GPa 70
69
Melting Onset (Solidus), °C 480
1520
Poisson's Ratio 0.32
0.28
Specific Heat Capacity, J/kg-K 870
340
Stiffness to Weight: Axial, points 13
7.3
Stiffness to Weight: Bending, points 46
26
Thermal Conductivity, W/m-K 130
17
Thermal Diffusivity, mm2/s 50
9.5
Thermal Expansion, µm/m-K 23
7.3