Aluminum oxide

Aluminum oxide (Al2O3)

Alumina or aluminum oxide is a chemical compound of aluminium and oxygen with the chemical formula Al2O3. Is the most well-known oxide ceramic material.
Aluminum oxide is an electrical insulator and has a relatively high thermal conductivity (30 Wm−1K−1). Due to its relatively high hardness, it is used as an abrasive and a component in cutting tools.

This ceramic is widely used in the Medical industry, Military and protective equipment, Electrical and electronics industry, Gem industry, Industrial applications, etc.

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Composition

Element Al2O3 SiO2 MgO Na2O Fe2O3 CaO TiO2 B2O3
Content 99,7% 0,05% 0,03% 0,15% 0,02% 0,03% < 0,01% < 0,2%

Typical properties

Flexural Strength
> 250 MPa
Elastic modulus
> 350 GPa
Density
3,89 g/cm3
Hardness
> 1200 HV

Typical properties; not to be construed as specifications.
EN ISO 6507, ASTM D790.

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