391.5 HRC = 3,993.3 HV
| HRC | HV |
|---|---|
| 376.5 HRC | 3,840.3 |
| 381.5 HRC | 3,891.3 |
| 386.5 HRC | 3,942.3 |
| 391.5 | 3,993.3 |
| 396.5 HRC | 4,044.3 |
| 401.5 HRC | 4,095.3 |
| 406.5 HRC | 4,146.3 |
391.5 HRC = 3,993.3 HV
1 HRC ≈ 10.2 HV · 1 HRB ≈ 1.8 HV · 1 Mohs ≈ 0.1 HV — approximate; real conversions vary by material per ASTM E140