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  • Sapphire (Sapphire Windows)

    Colorless Sapphire (White Sapphire)
    sapphire, rocoes
    Sapphire glass
    Key Features

    Sapphire with high surface hardness.

    Optical applications.
    Infrared applications.
    Optical instruments.


    ITEM NO:Sapphire

    Spectral Characteristics
    Tave>82% @ 400-700nm
    Physical Characteristics
    0.6, 1.0, 2.0, 3.0mm
    Square: 3*3 ~ 40*40mm
    Round: 3 ~ 50mm
    Resistant Temperature

    Crystal system Trigonal
    Chemical formula Aluminium Oxide, Al2O3
    Other composition Na, Si, Ca, Fe, Ga, Mg, Ti, Mn, Pb, Cu, Zn, Ni, Cr.
    Specific gravity 3.99-3.98g/cm3
    Melting point 2320K3
    Softing point 2070K3
    Coefficient of thermal expansion 6.2*10-6/K @ 300K3
    9 (Mohs Scale of hardness)
    Index (@589.3nm) 1.760 ~ 1.789
    Electrical resistance 770K: 1011Ω.cm
    1270K: 106Ω.cm
    2270K: 103Ω.cm

    Information and Notes

  • 1. Sapphire is a gemstone variety of the mineral corundum, an aluminium oxide (Al2O3).
             Because of the remarkable hardness of sapphires, sapphires are used in some non-ornamental applications,
             including infrared optical components, such as in scientific instruments; high-durability windows
             (also used in scientific instruments); wristwatch crystals; and very thin electronic wafers.
  • 2. Other shapes, dimensions or thickness available. Glass Process.
  • 3. The transmittance curves are measurements at 0°of incidence angle.
  • 4. The transmittance curves are based on actual measurements and may be different with manufacturing lots.
  • 5. For more transmittance/lower reflection, consider Anti Reflection Coaitng.

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