Md Khairal Refer to the following link, it could be helpful; https://link.springer.com/article/10.1007%2Fs11837-003-0144-5?LI=true
Conversion from BHN to VHN is tricky because strain levels are different in the two tests and the conversion should take strain hardening behavior of the metal into account. BHN strain can be 0.1 to 0.2 whereas VHN strain is constant (according to Tabor 0.08, although we found it to be 0.025 for aluminum). If you know at least the Hollomon parameters, you may be able to estimate VHN from BHN. I hope this helps. Let me know if you have any other questions.
Thanks, Dr. Tiryakioglu for your nice clarification.
I have got a conversion factor, through one of my seniors from my university, which gives an approximate conversion between these two scales.
www.twi-global.com/technical-knowledge/faqs/faq-how-can-i-convert-between-hardness-scales/
Thanks Prof. Habib for your kind suggestion.
It depends on your base metal. For instance for Carbon steel and alloy steel, you can use standard ASTM A370 or ASME SA-370. Inside this standard, there are some useful tables which you can convert Brinell to Vickers and vice versa.
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