0.90C 7.4Cr-1.4Mo-0.3V-2.7Ni Low Alloy Steel

This is a high-carbon, cobalt-bearing tool steel strengthened by chromium, molybdenum, vanadium, nickel, and tungsten additions—a specialized alloy designed for extreme hardness and wear resistance. The unusually high cobalt content (~13.7%) is characteristic of premium tool steels used in demanding cutting and forming applications where edge retention and thermal fatigue resistance are critical. Engineers select this material for applications requiring exceptional hardness combined with toughness, particularly in high-speed machining tools, die-casting dies, and punch/shear blades where conventional tool steels would fail under thermal cycling or abrasive wear.