2021-02-02
Because the high quality artificial sapphire crystal material has good light transmittance in the range of 0.20 ~ 5.50μm, the infrared transmittance is almost no change with temperature, and the transmittance of ultraviolet and visible light is also high, so it is often used instead of other optical materials Optical components, through the infrared optical window, and is widely used in infrared and far infrared military equipment, such as: used in night vision infrared and far infrared sight, night vision cameras and other equipment and satellite, space technology instrumentation As well as windows for high power lasers, various optical prisms, optical windows, UV and IR windows and lenses, low temperature experimental observation port, in the maritime aviation with high precision instruments and other aspects of the full application.
SPECIFICATIONS
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Physical Properties
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Density
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3.98 G/Cm³
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Hardness,Mohs
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9
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Dielectric Constant For 9.37×109Hz
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~9.4@300k at A axis
~11.58@ 300K at C axis
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Melting Point,℃
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2040
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Thermal Conductivity,W/M-Kat 313K
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45
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Thermal Expansion,1/Kat 293K
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10-6.℃-1 8.8
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Specific Heat Capacity,J(Kg·℃)
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0.782
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Crystal Class
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Hexagonal System
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Knoop Hardness,Kg/M㎡
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2000
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Young'S Modulus,Gpa
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380
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Shear Modulus,Gpa
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145
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Bulk Modulus,Gpa
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240
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A
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a=4.785,c=12.991
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Poisson'S Ratio
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0.27-0.29
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Chemical Properties
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Solubility In Water
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None
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Molecular Weight
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102
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tel
