309.5 HRC = 3,156.9 HV
| HRC | HV |
|---|---|
| 294.5 HRC | 3,003.9 |
| 299.5 HRC | 3,054.9 |
| 304.5 HRC | 3,105.9 |
| 309.5 | 3,156.9 |
| 314.5 HRC | 3,207.9 |
| 319.5 HRC | 3,258.9 |
| 324.5 HRC | 3,309.9 |
309.5 HRC = 3,156.9 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