42 HV to HRC

42 HV = 4.12 HRC

HVHRC
36 HV3.53
38 HV3.73
40 HV3.92
424.12
44 HV4.31
46 HV4.51
48 HV4.71

42 HV = 4.12 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