How much do you know about the test force values of a Vickers hardness tester?

Vickers hardness values are generally independent of the test force: for the same material, the Vickers hardness value may remain the same for test forces ranging from 500gf to 50kgf.
Vickers hardness testing plays an extremely important role in material analysis, quality control of production processes, and research and development outcomes. Hardness is essentially an empirical value; for many materials, it can be correlated with tensile strength and is also an indicator of wear resistance and ductility. When conducting hardness tests, to avoid mutual influence between different work-hardened zones, the distance between adjacent indentations must be greater than 3 times the length of the indentation diagonal.

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