The severe working conditions put high demands on the tool steels used in this application. In general, the steel used for hot work tools should provide excellent hot strength as well as good ductility and toughness.
Other important properties for hot work tools are high resistance against thermal cyclic stresses and good hot wear resistance. In order for the best tool performance, these properties should be uniform and even in all directions of the tool.
ASSAB offers a hot work tool steel program with grades having different combinations of: