135.5 Mohs = 1.33 HRC
| Mohs | HRC |
|---|---|
| 120.5 Mohs | 1.18 |
| 125.5 Mohs | 1.23 |
| 130.5 Mohs | 1.28 |
| 135.5 | 1.33 |
| 140.5 Mohs | 1.38 |
| 145.5 Mohs | 1.43 |
| 150.5 Mohs | 1.48 |
135.5 Mohs = 1.33 HRC
1 HRC ≈ 10.2 HV · 1 HRB ≈ 1.8 HV · 1 Mohs ≈ 0.1 HV — approximate; real conversions vary by material per ASTM E140