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Cadmium Telluride vs. Zinc Selenide

Both cadmium telluride and zinc selenide are non-glass optical ceramics. There are 12 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is cadmium telluride and the bottom bar is zinc selenide.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
69
Poisson's Ratio 0.41
0.28

Thermal Properties

Melting Onset (Solidus), °C 1090
1520
Specific Heat Capacity, J/kg-K 210
340
Thermal Conductivity, W/m-K 5.0
17
Thermal Expansion, µm/m-K 5.9
7.3

Otherwise Unclassified Properties

Density, g/cm3 5.9
5.3
Light Transmission Range, µm 1.0 to 25
0.6 to 21
Refractive Index 2.6
2.5

Common Calculations

Stiffness to Weight: Axial, points 4.3
7.3
Stiffness to Weight: Bending, points 20
26
Thermal Diffusivity, mm2/s 4.1
9.5