Ceradyne manufactures silicon nitride weld location pins for use in the metal forming industry. The location pins allow sheet metal parts to have nuts welded to them in precise locations. These pins make use of silicon nitride’s strength, wear resistance, resistance to molten metal slag, and its electrical resistivity. Since the pins are electrical insulators, the welds are of a consistent high quality because there is no leakage of electrical current during the resistance welding. These parts are proven in a major automotive manufacturing plant.