Technical Summary
- CategoryHigh Alloy Tool Steel
- ManufacturerCarpenter Technology
- ProcessPM
- HRC Range66-70
Ratings: Toughness 1, Edge 12, Corrosion 3.5
Source attribution: Knife Steel Nerds and SteelHardnessLab.
High Alloy Tool Steel / Carpenter Technology
Rex 121
Toughness 1/10, Edge Retention 12/10, Corrosion Resistance 3.5/10. Target hardness range: 66-70 HRC.
Known aliases: CPM-Rex121.
Chemical Composition
| C | 3.4% |
|---|---|
| Cr | 4.0% |
| V | 9.5% |
| Mo | 5.0% |
| W | 10.0% |
| Co | 9.0% |
SteelHardnessLab Testing Data
Testing recognition: u/679696 and u/Skylark427.
| Manufacturer | Samples | Avg HRC |
|---|---|---|
| Spyderco | 1 | 70.2 |
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