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Aluminum Nitride vs. Infrared Transmitting Glass

Aluminum nitride belongs to the non-oxide engineering ceramics classification, while infrared transmitting glass belongs to the glass and glass-ceramics. There are 10 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is aluminum nitride and the bottom bar is infrared transmitting glass.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 2.9 to 3.3
4.4 to 4.8
Elastic (Young's, Tensile) Modulus, GPa 330
18 to 63
Flexural Strength, MPa 190 to 400
20 to 79
Poisson's Ratio 0.21 to 0.31
0.28 to 0.3
Specific Heat Capacity, J/kg-K 780
360 to 430
Stiffness to Weight: Axial, points 55 to 63
2.3 to 7.3
Stiffness to Weight: Bending, points 69 to 80
20 to 28
Thermal Conductivity, W/m-K 80 to 190
0.0060 to 0.23
Thermal Diffusivity, mm2/s 31 to 74
0.0029 to 0.14
Thermal Expansion, µm/m-K 4.2 to 5.4
9.0 to 17