This is a high-carbon, high-chromium tool steel alloyed with nickel, molybdenum, and vanadium, with an unusual cobalt addition (~12%) that is not typical of standard tool steel compositions. The material appears to be a specialty or experimental tool steel formulation designed for applications requiring extreme hardness and wear resistance, possibly for precision cutting tools, gauges, or specialized die applications where the cobalt addition may enhance toughness or thermal fatigue resistance. The high carbon and chromium content combined with strong carbide-forming elements (vanadium, molybdenum) creates a material suitable for demanding wear environments, though the cobalt content suggests this may be a custom alloy or research composition rather than a widely commercialized grade.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Elongation at Break(εf) | 15.50 | - | — | ||
Ultimate Tensile Strength(σUTS) | 279.3 | ksi | — | ||
Yield Strength (0.2% offset)(σy) | 207.4 | ksi | — |