This is a high-carbon, high-chromium tool steel with significant cobalt addition (11.7%), molybdenum, vanadium, and nickel alloying—a composition characteristic of premium tool steels designed for demanding cutting and forming applications. The material combines exceptional hardness and wear resistance (from high carbon and chromium) with improved toughness and thermal fatigue resistance (from nickel, molybdenum, and vanadium). It is used in precision cutting tools, dies, and punches where edge retention and resistance to thermal cycling are critical; the cobalt content is particularly notable as it enhances hot hardness, making this steel suitable for high-speed machining and applications requiring sustained performance at elevated temperatures. Engineers choose this alloy over standard tool steels when wear life and thermal fatigue resistance justify the higher material and processing costs.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Elongation at Break(εf) | 15.50 | - | — | ||
Ultimate Tensile Strength(σUTS) | 1.960 | GPa | — | ||
Yield Strength (0.2% offset)(σy) | 1.616 | GPa | — |