121.5 HRC = 1,239.3 HV
| HRC | HV |
|---|---|
| 106.5 HRC | 1,086.3 |
| 111.5 HRC | 1,137.3 |
| 116.5 HRC | 1,188.3 |
| 121.5 | 1,239.3 |
| 126.5 HRC | 1,290.3 |
| 131.5 HRC | 1,341.3 |
| 136.5 HRC | 1,392.3 |
121.5 HRC = 1,239.3 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