Magnesium Fluoride (MgF2) Optical Material

Magnesium fluoride is a non-glass optical ceramic material.

Material Properties

Density3.2 g/cm3 (200 lb/ft3)

Dielectric Constant (Relative Permittivity) At 1 MHz5.2

Elastic (Young's, Tensile) Modulus130 GPa (19 x 106 psi)

Light Transmission Range0.12 to 7.0 µm

Melting Onset (Solidus)1260 °C (2300 °F)

Poisson's Ratio0.27

Refractive Index1.4

Shear Modulus76 GPa (11 x 106 psi)

Specific Heat Capacity980 J/kg-K

Thermal Conductivity28 W/m-K

Thermal Diffusivity8.9 m2/s

Thermal Expansion11 µm/m-K

The length of each bar compares the given value to the highest value in the database.

Further Reading

Handbook of Optical Constants of Solids, Edward D. Palik (editor), 1998

Handbook of Optical Materials, Marvin J. Weber, 2003