279.5 HRB to HV

279.5 HRB = 503.1 HV

HRBHV
264.5 HRB476.1
269.5 HRB485.1
274.5 HRB494.1
279.5503.1
284.5 HRB512.1
289.5 HRB521.1
294.5 HRB530.1

279.5 HRB = 503.1 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