... ,O1, Specification:20~450or customers requestment Annealed Hardness:HB228 cold work mould steel AISI O1/DIN1.2510/JIS SKS3/GB ... 6000mm 2used for highwear resistance, large and complicated cold forming mould. For example, cold cutting scissors, trimming die, wire-drawing die, thread ... rolling die, cold-extrusion die,deep drawing dies,cold heading die,Clay mold and high-volume ...