What is 110 copper used for? Copper 110 is perfect for electronic applications requiring free from damage and pollution by harmful impurities and oxides. 110 copper can also be applied for a diversity of products and industries, such as heat exchanger components, automotive spark plug electrodes, plumbing fittings, electrical components, waveguides, base plates, bus bars, blade and ring terminals, cables, power transmission components, resistance welding electrodes, terminals, components for vacuum devices, switches, interrupters, deposition units, electron tubes, glass-to-metal seals, superconductive magnets parts and more.