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Gallium Arsenide vs. Cordierite

Gallium arsenide belongs to the non-glass optical ceramics classification, while cordierite belongs to the oxide-based engineering ceramics. There are 8 material properties with values for both materials. Properties with values for just one material (17, 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 gallium arsenide and the bottom bar is cordierite.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 5.3
2.0 to 2.2
Elastic (Young's, Tensile) Modulus, GPa 85
62
Specific Heat Capacity, J/kg-K 360
800 to 850
Stiffness to Weight: Axial, points 8.9
15 to 17
Stiffness to Weight: Bending, points 28
59 to 67
Thermal Conductivity, W/m-K 47
1.3 to 1.7
Thermal Diffusivity, mm2/s 25
0.74 to 1.0
Thermal Expansion, µm/m-K 5.6
2.9 to 4.8