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Zinc Selenide vs. Barium Fluoride

Both zinc selenide and barium fluoride are non-glass optical ceramics. There are 12 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is zinc selenide and the bottom bar is barium fluoride.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
60
Poisson's Ratio 0.28
0.32

Thermal Properties

Melting Onset (Solidus), °C 1520
1370
Specific Heat Capacity, J/kg-K 340
420
Thermal Conductivity, W/m-K 17
9.0
Thermal Expansion, µm/m-K 7.3
18

Otherwise Unclassified Properties

Density, g/cm3 5.3
4.9
Light Transmission Range, µm 0.6 to 21
0.15 to 13
Refractive Index 2.5
1.6

Common Calculations

Stiffness to Weight: Axial, points 7.3
6.8
Stiffness to Weight: Bending, points 26
27
Thermal Diffusivity, mm2/s 9.5
4.4