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AISI 304 Stainless Steel vs. Zinc Sulfide

AISI 304 stainless steel and zinc sulfide belong to fundamentally different material chemistries. AISI 304 stainless steel 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 (26, in this case) are not shown.

For each property being compared, the top bar is AISI 304 stainless steel and the bottom bar is zinc sulfide.

AISI 304 (S30400) Stainless SteelZinc Sulfide (ZnS) Optical Material
Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 7.8
4.1
Elastic (Young's, Tensile) Modulus, GPa 200
75
Melting Onset (Solidus), °C 1400
1830
Poisson's Ratio 0.28
0.28
Specific Heat Capacity, J/kg-K 480
520
Stiffness to Weight: Axial, points 14
10
Stiffness to Weight: Bending, points 25
34
Thermal Conductivity, W/m-K 16
27
Thermal Diffusivity, mm2/s 4.2
13
Thermal Expansion, µm/m-K 17
6.5