Mo3.3-V1.3-Cr8-Co5 Tool Steel

This is a high-carbon, high-speed tool steel (HCHS) heavily alloyed with molybdenum, vanadium, and chromium, plus cobalt for elevated-temperature strength—a composition family derived from ASTM M-series tool steels optimized for extreme cutting and forming applications. It is used in precision metalworking for high-speed cutting tools, die-casting dies, and stamping tools where sustained thermal shock, abrasive wear, and edge retention under high-speed operation are critical demands. Engineers select this alloy when conventional tool steels cannot maintain hardness at elevated tool temperatures or when tool life cost justifies the material premium; the cobalt addition and high molybdenum content provide superior heat resistance and toughness compared to standard M2 or M4 tool steels.