O1/1.2510 cold work mould steel EAF or ESR material,black or machined surface,Specification:customer ... size) O1/9CrWMn cold work mould steelO1/DIN1.2510 Features:1)Chemical composition:C=0.85~0.95,Si=0.20 ... .40,Mn=1.00~1.30,Cr=0.40~0.60,W=0.40~0.60,V=0.202)Comparable steel:O1(USA ... AISIS),9CrWMn(China),SKS3(Japan JIS),1.2510(Germany,DIN),90MnWCrV5(France,NF ...