High-speed steels (SS, HSS)
- 3. January 2020
- Posted by: Andreas Janisch
- Category: machining
High-speed steels are high-alloy steels. Important alloying elements are:
Tungsten and vanadium: they increase the hot hardness
Chrome: Chrome causes an increase in through hardening
Molybdenum: Molybdenum ensures high toughness and higher through hardenability
Cobalt: The addition of cobalt increases the tempering resistance and increases the hot hardness
High-speed steels achieve a hot hardness of up to 600°C and cutting speeds of up to 60 m/min.
An increase in tool life can be achieved by hard chromium plating, carbonizing, nitriding or titanium carbide coating.