Brief description

Sapphire monocrystal is noted for its high mechanical strength, chemical resistance and temperature stability and additionally offers good optical transmittance from 200 nm. Wherever extreme levels of wear resistance, hardness, inertness, temperature stability and chemical resistance are demanded, sapphire is the right solution.

Fields of application

  • Protective windows/protective glass
  • Optical waveguides, e.g. for medical technology
  • Sight glasses
  • Laser technology components
  • Analysis and plasma equipment

Main properties

  • Acid-insoluble, e.g. on exposure to hydrofluoric acid, fluorine or aggressive gases
  • Outstanding optical transmittance – from UV to IR
  • Resistance to temperatures up to 2000 °C
  • Resistance to corrosion and abrasion
  • Extreme hardness, high strength (Mohs hardness 9)
  • Excellent compressive strength
  • High electrical resistance
  • High permittivity
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