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Steatite vs. Gallium Arsenide

Steatite belongs to the oxide-based 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 (18, 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 steatite and the bottom bar is gallium arsenide.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 1.9 to 2.8
5.3
Elastic (Young's, Tensile) Modulus, GPa 68 to 120
85
Poisson's Ratio 0.23
0.31
Specific Heat Capacity, J/kg-K 850 to 860
360
Stiffness to Weight: Axial, points 14 to 32
8.9
Stiffness to Weight: Bending, points 52 to 83
28
Thermal Conductivity, W/m-K 1.8 to 2.5
47
Thermal Diffusivity, mm2/s 0.79 to 1.1
25
Thermal Expansion, µm/m-K 7.0 to 9.0
5.6