Brass

An alloy con­sisting essentially of copper and zinc. A brass alloy that is 70 percent copper, 30 percent zinc is malleable and ductile, offers excellent cold-working characteristics and is excellent for soft-soldering and good for silver alloy brazing or oxyacetylene welding. Conversely, it has poor hot-working and machining properties and is considered fair for resistance or carbon-arc welding.