40.5 HV to HRC

40.5 HV = 3.97 HRC

HVHRC
34.5 HV3.38
36.5 HV3.58
38.5 HV3.77
40.53.97
42.5 HV4.17
44.5 HV4.36
46.5 HV4.56

40.5 HV = 3.97 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