- 2. January 2020
- Posted by: Andreas Janisch
- Category: machining
Tool steels have a carbon content between 0.6 and 1.3 %. By heat treatment (heating to austenitizing temperature, quenching in a water bath and tempering) an attempt is made to achieve a suitable compromise between hardness and toughness. The hot hardness is about 200°C.
By alloying with chromium (Cr), tungsten (W), molybdenum (Mo) and vanadium (V), the hot hardness can be increased to approx. 300°C, while at the same time improving the wear properties.
Due to the low permissible cutting speeds and the low heat resistance, tool steels are hardly used in metalworking today. They are still used in woodworking and for hand tools.