306.5 HV to HRC

306.5 HV = 30.05 HRC

HVHRC
291.5 HV28.58
296.5 HV29.07
301.5 HV29.56
306.530.05
311.5 HV30.54
316.5 HV31.03
321.5 HV31.52

306.5 HV = 30.05 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