Potassium Chloride vs. Forsterite

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

For each property being compared, the top bar is potassium chloride and the bottom bar is forsterite.

Potassium Chloride (KCl) Optical Material Forsterite (Mg₂SiO₄)

Metric UnitsUS Customary Units

Material Properties

Density, g/cm³		2.0
Density, g/cm³		2.1 to 3.1

Dielectric Constant (Relative Permittivity) At 1 MHz		4.6
Dielectric Constant (Relative Permittivity) At 1 MHz		6.2

Electrical Dissipation At 1 MHz		0.00010
Electrical Dissipation At 1 MHz		0.00030

Specific Heat Capacity, J/kg-K		690
Specific Heat Capacity, J/kg-K		850

Thermal Conductivity, W/m-K		6.5
Thermal Conductivity, W/m-K		1.7 to 3.5

Thermal Diffusivity, mm²/s		4.7
Thermal Diffusivity, mm²/s		0.94 to 1.3

Thermal Expansion, µm/m-K		36
Thermal Expansion, µm/m-K		9.0 to 10

Potassium Chloride vs. Forsterite

Material Properties

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