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Yttria vs. Zinc Selenide

Yttria belongs to the oxide-based engineering ceramics classification, while zinc selenide 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 selenide.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 5.0
5.3
Elastic (Young's, Tensile) Modulus, GPa 120
69
Light Transmission Range, µm 0.3 to 12
0.6 to 21
Melting Onset (Solidus), °C 2440
1520
Specific Heat Capacity, J/kg-K 440
340
Stiffness to Weight: Axial, points 13
7.3
Stiffness to Weight: Bending, points 32
26
Thermal Conductivity, W/m-K 0.3
17
Thermal Diffusivity, mm2/s 0.14
9.5
Thermal Expansion, µm/m-K 8.0
7.3