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Mullite vs. Zinc Sulfide

Mullite belongs to the oxide-based engineering ceramics classification, while zinc sulfide belongs to the non-glass optical ceramics. There are 9 material properties with values for both materials. Properties with values for just one material (18, in this case) are not shown.

For each property being compared, the top bar is mullite and the bottom bar is zinc sulfide.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 2.7 to 3.0
4.1
Elastic (Young's, Tensile) Modulus, GPa 110 to 170
75
Poisson's Ratio 0.25
0.28
Specific Heat Capacity, J/kg-K 950
520
Stiffness to Weight: Axial, points 22 to 31
10
Stiffness to Weight: Bending, points 58 to 62
34
Thermal Conductivity, W/m-K 3.5 to 11
27
Thermal Diffusivity, mm2/s 1.4 to 3.7
13
Thermal Expansion, µm/m-K 5.8
6.5