Overviews:

The steel used in the manufacture of various cutting tools, cold and hot deformation molds, measuring tools, and other tools, collectively referred to as tool steel. All kinds of tool steels not only have common requirements, such as high hardness, good wear resistance, and certain toughness and strength but also have their special requirements, such as red hardness, impact resistance, dimensional stability, thermal fatigue resistance, and good comprehensive mechanical properties. To meet these different requirements, various tool steels of the same composition are used in production, and their performance requirements are met by appropriate heat treatment processes.