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Gallium Arsenide vs. Limestone

Gallium arsenide belongs to the non-glass optical ceramics classification, while limestone belongs to the natural stone. There are 9 material properties with values for both materials. Properties with values for just one material (12, 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 limestone.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 5.3
2.6
Elastic (Young's, Tensile) Modulus, GPa 85
77
Poisson's Ratio 0.31
0.25
Specific Heat Capacity, J/kg-K 360
920
Stiffness to Weight: Axial, points 8.9
16
Stiffness to Weight: Bending, points 28
55
Thermal Conductivity, W/m-K 47
2.1
Thermal Diffusivity, mm2/s 25
0.88
Thermal Expansion, µm/m-K 5.6
8.0