High-speed steel (also known as HS steel or HSS, from High Speed Steel) is a high-alloy tool steel that is characterized by its particularly high hardness, wear resistance and heat resistance. It is mainly used for cutting tools such as drills, milling cutters, turning tools and saws.
Properties of high-speed steel:
• High hot hardness: retains its hardness even at temperatures up to around 600-650 °C.
• Good machinability: Ideal for the manufacture of metalworking tools.
• High wear resistance: Long tool life.
• High proportion of alloying elements such as tungsten (W), molybdenum (Mo), vanadium (V), cobalt (Co) and chromium (Cr).