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Magnesium Fluoride vs. Glass-bonded Mica

Magnesium fluoride belongs to the non-glass optical ceramics classification, while glass-bonded mica belongs to the glass and glass-ceramics. There are 9 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown.

For each property being compared, the top bar is magnesium fluoride and the bottom bar is glass-bonded mica.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 3.2
2.6
Dielectric Constant (Relative Permittivity) At 1 MHz 5.2
6.8
Elastic (Young's, Tensile) Modulus, GPa 130
71
Specific Heat Capacity, J/kg-K 980
500
Stiffness to Weight: Axial, points 22
15
Stiffness to Weight: Bending, points 52
52
Thermal Conductivity, W/m-K 28
23
Thermal Diffusivity, mm2/s 8.8
18
Thermal Expansion, µm/m-K 11
6.7