299.5 HRB to HV

299.5 HRB = 539.1 HV

HRBHV
284.5 HRB512.1
289.5 HRB521.1
294.5 HRB530.1
299.5539.1
304.5 HRB548.1
309.5 HRB557.1
314.5 HRB566.1

299.5 HRB = 539.1 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