289.5 HV to HRC

289.5 HV = 28.38 HRC

HVHRC
274.5 HV26.91
279.5 HV27.4
284.5 HV27.89
289.528.38
294.5 HV28.87
299.5 HV29.36
304.5 HV29.85

289.5 HV = 28.38 HRC

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