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Potassium Chloride vs. Steatite

Potassium chloride belongs to the non-glass optical ceramics classification, while steatite belongs to the oxide-based engineering ceramics. There are 11 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 28
68 to 120
Poisson's Ratio 0.18
0.23

Thermal Properties

Specific Heat Capacity, J/kg-K 690
850 to 860
Thermal Conductivity, W/m-K 6.5
1.8 to 2.5
Thermal Expansion, µm/m-K 36
7.0 to 9.0

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 MHz 4.6
5.7 to 6.5
Electrical Dissipation At 1 MHz 0.00010
0.0010 to 0.0060

Otherwise Unclassified Properties

Density, g/cm3 2.0
1.9 to 2.8

Common Calculations

Stiffness to Weight: Axial, points 7.7
14 to 32
Stiffness to Weight: Bending, points 51
52 to 83
Thermal Diffusivity, mm2/s 4.7
0.79 to 1.1