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Alumiunium Oxide Ceramic
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Tag: Alumiunium Oxide Ceramic Ordering

Category Summary

The chemical formula for Aluminium Oxide is Al2O3. It is strong and heat-resistant. Alumina is produced by heating hydrates of alumina. Because of strong chemical bond strength between the Al and O ion , alumina has outstanding physical stability, such as high melting point (2050 °C), the highest hardness among oxides and high mechanical strength at room temperature. Mechanical strength is lowered largely above 1100 °C. Alumina is a typical electrically insulating material. Alumina is also chemically very stable and has a high corrosion resistance. It is insoluble in water and very slightly soluble in strong acid and alkaline solution. The mechanical properties are strongly dependent on their surfaces and the presence of defects resulting from their finishing and handling. Production of ceramic articles start with fine powder which is given shape by various casting and pressing methods prior to sintering at approximately 0.7 of the melting temperature.

Category Details


  • Strong
  • High heat-resistance
  • Very stable
  • High hardness
  • High mechanical strength
  • Electrical insulator

Keep in mind:

  • Properties depend strongly on presence of defects as a result of finishing and handling of workpieces.

Alumina products are manufactured by combinations of casting and/or pressing and sintering (heating at approximately 0.7 the melting temperature)


  • Crystalline ceramics
  • Technical/engineering ceramics
  • Acidic refractory
  • Metal oxide

Aluminium oxide is also known as alumina, aloxide, aloxit or alundum


Classification Sources

Idemat 2003



Known health effects for this category.


No known health issues


Known environmental effects for this category.

No known environmental issues