... Special tool steels 1.2379 1.ISO Certificate, UT test 2.High quality product & service 3,Hardness:HB<=255 cold work tool ... / D2 / Cr12Mo1V1 / SKD11 / XW-41 Special SteelHigh Strength Toughness, Wearable, High Chromium Steel 1 ... pins,drawing dies, plate dies and edge or cold shears.4. Corresponding materials: 1. 2379 ... can supply kinds of special steel such as die steel, alloy steel, tool steel, and etc., ...