355 HRB to HV

355 HRB = 639 HV

HRBHV
340 HRB612
345 HRB621
350 HRB630
355639
360 HRB648
365 HRB657
370 HRB666

355 HRB = 639 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