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Aluminum Nitride vs. Thallium Bromoiodide

Aluminum nitride belongs to the non-oxide engineering ceramics classification, while thallium bromoiodide belongs to the non-glass optical ceramics. There are 9 material properties with values for both materials. Properties with values for just one material (15, 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 aluminum nitride and the bottom bar is thallium bromoiodide.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 2.9 to 3.3
7.4
Elastic (Young's, Tensile) Modulus, GPa 330
31
Poisson's Ratio 0.21 to 0.31
0.37
Specific Heat Capacity, J/kg-K 780
150
Stiffness to Weight: Axial, points 55 to 63
2.3
Stiffness to Weight: Bending, points 69 to 80
14
Thermal Conductivity, W/m-K 80 to 190
0.55
Thermal Diffusivity, mm2/s 31 to 74
0.5
Thermal Expansion, µm/m-K 4.2 to 5.4
6.0