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Aluminum oxide hardness

October 27, 2023

Aluminum oxide hardness

Aluminum oxide is a very hard ceramic material. Its hardness is usually measured by Mohs hardness or Vickers hardness. Aluminum oxide's hardness depends on its crystal structure, purity, and processing, but typically ranges between 9 and 9.5 on the Mohs scale and higher on the Vickers scale.

This gives aluminum oxide excellent wear and scratch resistance, making it widely used in abrasives, grinding tools, ceramic knives, ceramic bearings, ceramic blades, ceramic tiles and other high-hardness applications. Its hardness also gives alumina excellent stability under high temperature and pressure conditions, making it suitable for high-temperature furnace linings, electronic equipment and other components in high-temperature environments.

In summary, the hardness of alumina makes it an important engineering ceramic material with excellent wear resistance and high-temperature performance.

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