What is the testing range of a Vickers hardness tester?

The Vickers hardness test has a very wide measurement range and can measure almost all metal materials currently used in industry, from very soft materials (a few Vickers hardness units) to very hard materials (3,000 Vickers hardness units).
The advantage of the Vickers hardness test lies in the fact that its hardness value is independent of the magnitude of the test force. As long as the material has uniform hardness, the test force can be chosen arbitrarily while the hardness value remains unchanged. This is equivalent to having a unified scale across a broad range of hardness.

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