Hard facts

Theory of hardness testing

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In the Vickers hardness test, an optical method, the size of indentation (the diagonals) left by the indenter is measured. In contrast, the depth of indentation caused by the indenter is measured in the depth measurement methods (only Rockwell is standardised).

The larger the indent left by the indenter at a defined test force in the surface of a workpiece (specimen), the softer the tested material.


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Vickers test procedure