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Magnesium Fluoride vs. Engineering Porcelain

Magnesium fluoride belongs to the non-glass optical ceramics classification, while engineering porcelain belongs to the oxide-based engineering ceramics. There are 11 material properties with values for both materials. Properties with values for just one material (19, in this case) are not shown.

For each property being compared, the top bar is magnesium fluoride and the bottom bar is engineering porcelain.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 130
67 to 150
Poisson's Ratio 0.27
0.17
Shear Modulus, GPa 76
34

Thermal Properties

Specific Heat Capacity, J/kg-K 980
600 to 1000
Thermal Conductivity, W/m-K 28
1.8 to 6.5
Thermal Expansion, µm/m-K 11
2.0 to 6.6

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 MHz 5.2
6.5

Otherwise Unclassified Properties

Density, g/cm3 3.2
2.3 to 3.0

Common Calculations

Stiffness to Weight: Axial, points 22
16 to 29
Stiffness to Weight: Bending, points 52
49 to 65
Thermal Diffusivity, mm2/s 8.8
0.73 to 3.9