6.5 HV to HRC

6.5 HV = 0.64 HRC

HVHRC
3.5 HV0.34
4.5 HV0.44
5.5 HV0.54
6.50.64
7.5 HV0.74
8.5 HV0.83
9.5 HV0.93

6.5 HV = 0.64 HRC

Formula (approximate)

1 HRC ≈ 10.2 HV · 1 HRB ≈ 1.8 HV · 1 Mohs ≈ 0.1 HV — approximate; real conversions vary by material per ASTM E140