... test 2.High quality product & service 3,Hardness:HB<=255 cold work tool steels D2 1.23791.ISO Certificate, UT test 2.High quality ... toughness, wearable, high chromium steel3. Applications: Various complicated cold work dies, such as cold punch die, pins,drawing dies, plate dies and edge ... kinds of special steel such as die steel, alloy steel, tool steel, and etc., with the competitive price and high- ...