The water hardening types of tool steel are covered by AS1239 ‘W’ grades and these are shallow hardening. These steels contain around 1% carbon and may have small additions of vanadium for grain ...
Molybdenum high speed steels are designated as Group M steels according to the AISI classification system. Over 95% of high-speed steels manufactured in the US are group M steels. Tungsten is present ...