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:
Renowned for its extreme hardness and edge-holding properties, this remarkable steel features more than three percent carbon and high volumes of tungsten, molybdenum, vanadium, and cobalt.
