1. Chemical Composition Feature Cr13 stainless steel corrosion resisting. Hardening-tampering hardness HRC>50 super mirror-like production. Pre-hardened to HRC 30-36 mirror-like to easy machining, deformation effected by hardered could off. 3, Applications Plastic mould in corrosion contain Fand combustion-resiting matter(contain CL) Sizes Round bars: Dia. 90---480mm Flats: width 200---1000mm thickness 50---350mm Length: 2m---7m