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Potassium Bromide vs. Boron Carbide

Potassium bromide belongs to the non-glass optical ceramics classification, while boron carbide belongs to the non-oxide engineering ceramics. There are 10 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is potassium bromide and the bottom bar is boron carbide.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 2.8
2.1 to 2.7
Dielectric Constant (Relative Permittivity) At 1 MHz 4.9
6.4
Elastic (Young's, Tensile) Modulus, GPa 24
240 to 460
Poisson's Ratio 0.17
0.17 to 0.19
Specific Heat Capacity, J/kg-K 450
950
Stiffness to Weight: Axial, points 4.7
63 to 100
Stiffness to Weight: Bending, points 35
91 to 100
Thermal Conductivity, W/m-K 4.8
31 to 90
Thermal Diffusivity, mm2/s 3.9
16 to 38
Thermal Expansion, µm/m-K 39
4.5 to 5.6