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Hot pressed polycrystalline magnesium fluoride
Hot pressed polycrystalline magnesium fluoride is the most cost-effective medium wave infrared optical material at present. It has many advantages, such as high transmittance, low thermal radiation coefficient, high mechanical strength, good thermal shock resistance, chemical corrosion resistance, isotropy, low dielectric constant and so on. It is the preferred infrared window material and millimeter wave (microwave) / infrared dual-mode transmission material for medium wave infrared.
Application fields:
This product is mainly used as window or dome of medium wave infrared tracking, detection, search and other infrared devices, as well as radar wave / infrared dual-mode radome.
Main properties
|
Transmissive wavelength |
3～5μm |
Transmittance |
≥92% (2mm) |
|
Density |
≥3.17 g/cm3 |
Compression strength |
≥300MPa |
|
Knoop hardness |
≥5.39 Gpa |
Bending strength |
≥100MPa |
|
Poisson ratio |
0.25-0.36 |
Elasticity modulus |
≥110MPa |
|
Dielectric constant |
5.1 |
Dielectric loss angle tangent |
0.001 |
|
Thermal expansion coefficient |
≤1.3×10-5 K-1 (25℃～300℃) |
Refractive index |
1.3816±0.005 (λ=0.5893μm) 1.3524±0.0005 (λ=4μm) |
Main specifications:
plate: various specifications with diameter of 330mm and thickness less than 15mm.
Hot pressed magnesium fluoride
Tel: 010-65492620-83018303 Fax: 010-65492620-8007
