... +Annealed+Grinded/Machined 3.UT acco to En 1921C/c 1.2379 Alloy Steel(1) Dimension: Diameter 70-260mm; Thickness 20-150mm,Width:100 ... -- 0.030 0.030 0.75-- (6)Performance:1. Widely-used cold-work die steel .High carbon & high chrome ledeburite steels. 2 ... dies, screw plates, thread rolling dies, complicated-formed piercing dies,steel plate deep-drawing diesand high abrasion resistant cold-punched dies ...