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Glass-bonded Mica vs. Gallium Arsenide

Glass-bonded mica belongs to the glass and glass-ceramics classification, while gallium arsenide belongs to the non-glass optical ceramics. There are 8 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 glass-bonded mica and the bottom bar is gallium arsenide.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 2.6
5.3
Elastic (Young's, Tensile) Modulus, GPa 71
85
Specific Heat Capacity, J/kg-K 500
360
Stiffness to Weight: Axial, points 15
8.9
Stiffness to Weight: Bending, points 52
28
Thermal Conductivity, W/m-K 23
47
Thermal Diffusivity, mm2/s 18
25
Thermal Expansion, µm/m-K 6.7
5.6