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Potassium Bromide vs. C-820 Magnesia Ceramic

Potassium bromide belongs to the non-glass optical ceramics classification, while C-820 magnesia ceramic belongs to the oxide-based engineering ceramics. There are 10 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is potassium bromide and the bottom bar is C-820 magnesia ceramic.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 2.8
2.7
Dielectric Constant (Relative Permittivity) At 1 MHz 4.9
9.6
Elastic (Young's, Tensile) Modulus, GPa 24
100
Electrical Dissipation At 1 MHz 0.00020
0.00030
Specific Heat Capacity, J/kg-K 450
950
Stiffness to Weight: Axial, points 4.7
21
Stiffness to Weight: Bending, points 35
58
Thermal Conductivity, W/m-K 4.8
8.0
Thermal Diffusivity, mm2/s 3.9
3.1
Thermal Expansion, µm/m-K 39
11