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Yttria vs. Zinc Sulfide

Yttria belongs to the oxide-based engineering ceramics classification, while zinc sulfide belongs to the non-glass optical ceramics. There are 10 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

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

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 5.0
4.1
Elastic (Young's, Tensile) Modulus, GPa 120
75
Light Transmission Range, µm 0.3 to 12
0.37 to 14
Melting Onset (Solidus), °C 2440
1830
Specific Heat Capacity, J/kg-K 440
520
Stiffness to Weight: Axial, points 13
10
Stiffness to Weight: Bending, points 32
34
Thermal Conductivity, W/m-K 0.3
27
Thermal Diffusivity, mm2/s 0.14
13
Thermal Expansion, µm/m-K 8.0
6.5