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Zinc Sulfide vs. Barium Fluoride

Both zinc sulfide 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 sulfide and the bottom bar is barium fluoride.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 75
60
Poisson's Ratio 0.28
0.32

Thermal Properties

Melting Onset (Solidus), °C 1830
1370
Specific Heat Capacity, J/kg-K 520
420
Thermal Conductivity, W/m-K 27
9.0
Thermal Expansion, µm/m-K 6.5
18

Otherwise Unclassified Properties

Density, g/cm3 4.1
4.9
Light Transmission Range, µm 0.37 to 14
0.15 to 13
Refractive Index 2.3
1.6

Common Calculations

Stiffness to Weight: Axial, points 10
6.8
Stiffness to Weight: Bending, points 34
27
Thermal Diffusivity, mm2/s 13
4.4