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CVD Diamond vs. Potassium Bromide

CVD diamond belongs to the non-oxide engineering ceramics classification, while potassium bromide belongs to the non-glass optical ceramics. There are 13 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is CVD diamond and the bottom bar is potassium bromide.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 1050
24
Poisson's Ratio 0.1
0.17

Thermal Properties

Specific Heat Capacity, J/kg-K 500
450
Thermal Conductivity, W/m-K 1900
4.8
Thermal Expansion, µm/m-K 1.0
39

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 MHz 5.7
4.9
Electrical Dissipation At 1 MHz 0.00020
0.00020

Otherwise Unclassified Properties

Density, g/cm3 3.5
2.8
Light Transmission Range, µm 0.22 to 100
0.22 to 26
Refractive Index 2.4
1.8

Common Calculations

Stiffness to Weight: Axial, points 170
4.7
Stiffness to Weight: Bending, points 96
35
Thermal Diffusivity, mm2/s 1080
3.9