... than natural diamond wire drawing die. PCD wire drawing die is widely used in wire drawing industry. Used for aluminum wire, copper wire, stainless steel wire, alloy wire etc..size ... angle50+/-2050+/-20soft wire: copper wire, aluminum wire, brass wire, gold wire etc.hard wire: stainless steel wire, copper plated steel wire, tungsten wire etc. Popular in wire drawing industry! Polycrystalline diamond ...