Technical Summary
- Category: High Alloy Tool Steel
- Manufacturer: Carpenter Technology
- Process: PM
- Ratings: Toughness 4.5, Edge 6, Corrosion 4
- HRC Range: 63-67
Source attribution: Knife Steel Nerds and SteelHardnessLab.
High Alloy Tool Steel / Carpenter Technology
Rex 45/HAP40
Toughness 4.5/10, Edge Retention 6/10, Corrosion Resistance 4/10. Target hardness range: 63-67 HRC.
Chemical Composition
| C | 1.3% |
|---|---|
| Cr | 4.0% |
| V | 3.0% |
| Mo | 5.0% |
| W | 6.0% |
| Co | 8.0% |
SteelHardnessLab Testing Data
Testing recognition: u/679696 and u/Skylark427.
| Manufacturer | Samples | Avg HRC |
|---|---|---|
| Spyderco | 2 | 66.1 |