instead of H ,HV is used in the vickers hardness test.

HV - vickers hardness

The HV number is then determined by the ratio F/A, where F is the force applied to the diamond in kilograms-force and A is the surface area of the resulting indentation in square millimeters

https://www.sciencedirect.com/search?qs=H%20%28hardness%29%20instead%20of%20Vickers%20hardness&show=25&sortBy=relevance

I suppose Meyer Hardness, aka mean pressure, can be used. MH is a better measure of plasticity than HV as it uses the projected area and not the surface area of the indentation.