... die. PCD wire dies are manufactured with polycrystalline diamonds, a durable synthetic material with a highly polished surface finish that minimizes ... a problem, butsurface finish is less critical. Typical MarketsAluminum wire, copper wire, stainless steel wire, tire cord, welding wire,galvanized steel ... wire.For more information, please contact us today! Polycrystalline Diamond copper extrusion die