It is a modification of AISI 420 stainless steel, especially aimed at the plastic molding industry, either as a cavity or insert. It belongs to the family of martensitic steels (hardenable by quenching and tempering); Among its advantages, the following stand out:

• Good resistance to corrosion and oxidation.
• Good machinability and polishability (applications for optical or aesthetic quality molds).
• Good dimensional stability during hardening