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 Hardness:1370kg/mm2

Wearing Coefficient (compared to steel): 1.5

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

IR Transmittance: 3~5μm

IR Transmittance in Frequency Range>85%