... experiences 2.Black or machined surface Cold Work Tool Steel Cr12,D3, SKD1 ,1.2080Characteristics:1. ... A kind of widely used cold work tool steel, belong to carbon chromium ledeburitic steel.2 ... , it is widely used in making cold die and punch, cold shearing ,drilling bushing ,gauge, wortle, coining ... rolling die and so on, which are small impact load but need high wearable ability. Heat treatment: ...