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7075 Aluminum vs. Zinc Sulfide

7075 aluminum and zinc sulfide belong to fundamentally different material chemistries. 7075 aluminum is a metal, while zinc sulfide 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 sulfide.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 3.0
4.1
Elastic (Young's, Tensile) Modulus, GPa 70
75
Melting Onset (Solidus), °C 480
1830
Poisson's Ratio 0.32
0.28
Specific Heat Capacity, J/kg-K 870
520
Stiffness to Weight: Axial, points 13
10
Stiffness to Weight: Bending, points 46
34
Thermal Conductivity, W/m-K 130
27
Thermal Diffusivity, mm2/s 50
13
Thermal Expansion, µm/m-K 23
6.5