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Potassium Chloride vs. CVD Diamond

Potassium chloride belongs to the non-glass optical ceramics classification, while CVD diamond belongs to the non-oxide engineering 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 potassium chloride and the bottom bar is CVD diamond.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 28
1050
Poisson's Ratio 0.18
0.1

Thermal Properties

Specific Heat Capacity, J/kg-K 690
500
Thermal Conductivity, W/m-K 6.5
1900
Thermal Expansion, µm/m-K 36
1.0

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 MHz 4.6
5.7
Electrical Dissipation At 1 MHz 0.00010
0.00020

Otherwise Unclassified Properties

Density, g/cm3 2.0
3.5
Light Transmission Range, µm 0.21 to 20
0.22 to 100
Refractive Index 1.6
2.4

Common Calculations

Stiffness to Weight: Axial, points 7.7
170
Stiffness to Weight: Bending, points 51
96
Thermal Diffusivity, mm2/s 4.7
1080