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Hexagonal Boron Nitride vs. Gallium Arsenide

Hexagonal boron nitride belongs to the non-oxide engineering ceramics classification, while gallium arsenide belongs to the non-glass optical ceramics. There are 9 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 hexagonal boron nitride and the bottom bar is gallium arsenide.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 1.9 to 2.1
5.3
Elastic (Young's, Tensile) Modulus, GPa 14 to 60
85
Poisson's Ratio 0.11
0.31
Specific Heat Capacity, J/kg-K 840 to 1610
360
Stiffness to Weight: Axial, points 4.1 to 18
8.9
Stiffness to Weight: Bending, points 42 to 69
28
Thermal Conductivity, W/m-K 29 to 96
47
Thermal Diffusivity, mm2/s 9.9 to 34
25
Thermal Expansion, µm/m-K 0.54 to 18
5.6