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Alumina (Al2O3) Ceramics

Alumina Ceramics Description

alumina ceramicsAlumina, or aluminum oxide Al2O3, with a molecular weight of 102, is the major source of aluminium in nature. Al2O3 has very high melting point, which is 2,072 °C and it is extremely hard.

Alumina ceramic is the most common technical ceramic material and relatively traditional material. High purity aluminum oxide ceramics as a fine ceramic material is widely used in a lot of industries. This material has superb performances in electrical insulation, high thermal conductivity, high chemical resistance, good wear resistance and low thermal expansion.

Alumina Ceramics Properties

Compound Formula Al2O3
Molecular Weight 101.96
Appearance White
Melting Point 2,072° C
Boiling Point 2,977° C
Density 3.95 g/cm3
Tensile Strength 44 kpsi
Hardness 2000 Knoop
Hot Expansion Coefficient 7.6 x 10-6/°C
Fracture toughness 4 – 5 MPa m½

Alumina Ceramics Application

Alumina tubes are used for industrial furnace and thermal couple protector. High purity alumina materials are excellent for making parts for CVD, ion implants, photolithography, and semiconductor parts. 

In traditional industries, ceramics are ideal for products such as injector tubes, gas nozzles and insulators. 

Compared with metals, alumina ceramic material is extremely hard, making it an ideal material for abrasive, grinding media. 

Alumina mortars and pestles are widely used in laboratories for grinding hard materials.

Aluminum Oxide Products

Your Zirconia Ceramics Supplier

Advanced Ceramic Materials (ACM) is a leading supplier of zirconia ceramic products of the highest quality for a wide range of applications. We are happy to provide advice on materials, design, and application. Feel free to contact us for any questions about ZrO2 or other ceramic materials that are not listed on the website. 


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