304.5 HV to HRC

304.5 HV = 29.85 HRC

HVHRC
289.5 HV28.38
294.5 HV28.87
299.5 HV29.36
304.529.85
309.5 HV30.34
314.5 HV30.83
319.5 HV31.32

304.5 HV = 29.85 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