283.5 HRB to HV

283.5 HRB = 510.3 HV

HRBHV
268.5 HRB483.3
273.5 HRB492.3
278.5 HRB501.3
283.5510.3
288.5 HRB519.3
293.5 HRB528.3
298.5 HRB537.3

283.5 HRB = 510.3 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