302.5 HRB to HV

302.5 HRB = 544.5 HV

HRBHV
287.5 HRB517.5
292.5 HRB526.5
297.5 HRB535.5
302.5544.5
307.5 HRB553.5
312.5 HRB562.5
317.5 HRB571.5

302.5 HRB = 544.5 HV

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