SKD61 Ejector Pin Oxidized Black surface for die casting hardened
Material: Skd61(1.2344), suj2(en52100),
Hardness: Head Hrc45-50, body Hrc 58-62Vacuum nitriding full body
Heat treatment and oil quenching, temper-ted make the ejector pin have heavy hardness and high ductility, then prolong the working life.