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Cadmium Telluride vs. Aluminum Nitride

Cadmium telluride belongs to the non-glass optical ceramics classification, while aluminum nitride belongs to the non-oxide engineering ceramics. There are 10 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is cadmium telluride and the bottom bar is aluminum nitride.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 5.9
2.9 to 3.3
Elastic (Young's, Tensile) Modulus, GPa 45
330
Knoop Hardness 45
1160
Poisson's Ratio 0.41
0.21 to 0.31
Specific Heat Capacity, J/kg-K 210
780
Stiffness to Weight: Axial, points 4.3
55 to 63
Stiffness to Weight: Bending, points 20
69 to 80
Thermal Conductivity, W/m-K 5.0
80 to 190
Thermal Diffusivity, mm2/s 4.1
31 to 74
Thermal Expansion, µm/m-K 5.9
4.2 to 5.4