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Aluminium oxide (Al 2O 3)

Aluminium oxide (Al 2O 3) with its different levels of purity, is the most used ceramic high-tech material.


  • High electric insulation (1x1014 bis 1x1015 Ωcm)
  • Between medium and extreme high mechanical strength (300 bis 630 MPa)
  • Very high strength against pressure(2000 bis 4000 MPa)
  • High hardness (15 bis 19 GPa)
  • Medium heat conductivity(20 bis 30 W/mK)
  • High resistance against corrosion and erosion
  • Excellent slide characteristic
  • (3,75 bis 3,95 g/cm³)
  • Operating temperature without mechanical stress 1000 bis 1500°C
  • Bio inert and food compatibility