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Product Summary of Alumina

Alumina, also known as aluminium oxide is an electrically insulating material with relatively high thermal conductivity for a ceramic. It could be argued as being one of the most cost effective of all ceramic materials and as a result is one of the most widely used. Its combination of high thermal conductivity and low thermal expansion imparts good thermal shock resistance.

Characteristics of Alumina include:

  • Electrically insulating
  • High thermal conductivity
  • High strength and stiffness
  • Available in a range of purities
  • Excellent resistance to strong acids and alkalis at elevated temperatures

Forms and Availability of Alumina

Please find below a list of our standard stock dimensions. Of course, we are very often able to supply alternative dimensions.


Diameter: 1 - 20mm

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Thickness: 0.15 - 10mm

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Diameter: 0.5 - 18mm

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What quantities are listed in our on-line catalog?

For large quantities, please request a quote using the links above. For small quantities with rapid delivery, please consult the following catalog pages: