Made from a combination of copper and zinc, brass has excellent machining qualities. As a high-density material, brass is ideal for heavy industrial parts. Brass is valued for it’s polished finish, but often disregarded as it can oxidize when it comes in contact with certain elements. When small amounts of lead are added, however, the properties of brass significantly improve. Its hardness and workability make brass one of the most versatile machining materials available. As a well-known CNC machine shop in PA, John Prosock Machine, Inc. machines brass for limitless end-part applications.