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Characteristics

 

        General Properties:

Chemical Composition: AL2O3

Crystal Formation: a- AL2O3

Melting Point: 2050

Boiling Point: 3500

Maximum Operating Temperature: 2000

Moh’s Hardness: Mohs Grade 9

Klopp Hardness1370kg/mm2

Wearing Coefficient (compared to steel): 1.5

Refractive Index (sodium D-line) Double Refractions No=1.768 Ne=1.760

IR Transmittance: 35μm

IR Transmittance in Frequency Range85%