CPM REX 121
From Spydiewiki
CPM REX 121 consists of:
| Carbon | Chromium | Cobalt | Copper | Manganese | Molybdenium | Nickel | Nitrogen | Phosphorus | Silicon | Sulfur | Tungsten | Vanadium |
| 3.40 | 4.00 | 9.00 | / | / | 5.00 | / | / | / | / | 0.03 | 10.00 | 9.50 |
From Spyderco's website:
Boasting almost a 15 percent vanadium content, this remarkable material offers the highest wear resistance of any cold work tool steel available today.
