High-Speed Steels (HSS)
are the cutting tool materials used for machining of materials. The HSS will be used for machining of materials
- 18% of Tungsten or Molybdenum, used for increasing hot hardness temperature of tool material.
- 4% of Chromium, used for increasing the strength of resistance to deformation of the cutting tool material.
- 1% of Vanadium, used for improving the wear resistance of the cutting tool material or for maintaining the keenness of cutting edge.