High Speed Tool Steel

High Speed Tool Steel is a special class of alloy tool steel designed to maintain hardness, wear resistance, and cutting ability at elevated temperatures, often above 500°C. It gets its name from its ability to cut materials at high speeds without losing its edge or becoming soft due to heat generated during machining. This steel typically contains high levels of tungsten, molybdenum, vanadium, chromium, and carbon, which contribute to its red hardness—the ability to retain hardness even when glowing red hot. It is used in manufacturing cutting tools such as drills, taps, milling cutters, saw blades, and tool bits.