stamping part and electrical contact: Copper,brass and silver stamping part and electrical contact Stamping parts and electrical contact:1: Face material: ... , CuNiZn, Monel, rivet material: solid silver alloy contacts and bimetal contacts, welding material: Ag, AgNi, AgCuNi, AgSnO28 ... of Pressing Parts: Yes, Auto parts, engine parts, computer electronics. 9: Process: punching, riveting, welding, metal ...