684.5 HRC = 6,981.9 HV
| HRC | HV |
|---|---|
| 669.5 HRC | 6,828.9 |
| 674.5 HRC | 6,879.9 |
| 679.5 HRC | 6,930.9 |
| 684.5 | 6,981.9 |
| 689.5 HRC | 7,032.9 |
| 694.5 HRC | 7,083.9 |
| 699.5 HRC | 7,134.9 |
684.5 HRC = 6,981.9 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