Magnesium Fluoride – MgF2

lenses, windows, mirrors, filters and prisms

TA very durable material resistant to mechanical and thermal shock and used for prisms, windows and lenses from the vacuum ultraviolet to the infrared region of 7.5 microns. MgF² is a birefringent material making it effective as a polarising element in the ultraviolet region.

Transmission Range 0.11 – 7.5 µ
Crystal Structure Tin oxide
Cleavage Plane Parellel to A or C axis
Colour colourless
Density 3.1766 (18°)
Melting Point (°) 1255
Reflection Loss 4.8% (visible) for 2 surfaces
Solubility index 0.0076gm/100gm water / 18°C
Hardness (Knoop) 415kg/mm2
Thermal Conductivity (cal/cm sec°C) 0.3W (m K) at (13°C)
Thermal Expansion coefficient (/°C) 18.8x10-6(Parellel to C axis)
1.31x10-6(Vertical to C axis)

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Whilst every effort has been made to verify all data provided, no responsibility can be accepted for its accuracy.