... /1.2510 cold work mould steel EAF or ESR material,black or machined surface,Specification:customer requested size) O1/9CrWMn cold work mould ... steelO1/DIN1.2510 Features:1 ... .60,V=0.202)Comparable steel:O1(USA AISIS),9CrWMn(China),SKS3(Japan JIS),1.2510(Germany,DIN),90MnWCrV5(France ...