... years of production experiences 2.Black or machined surface Cold Work Tool Steel Cr12,D3, SKD1 ,1.2080Characteristics:1.A ... used in making cold die and punch, cold shearing ,drilling bushing ,gauge, wortle, coining die,thread rolling die, screw thread rolling die and so on ... provide electric furnace +LF+VD and electroslag re-melting(ESR)steel forging materials, but also forging products of piece, bar, ...