Brass rods are rod-shaped objects made of copper and zinc alloys, named for their yellow color. Brass with a copper content of 56% to 68% has a melting point of 934 to 967 degrees. Brass has good mechanical properties and wear resistance, and can be used to manufacture precision instruments, ship parts, and shells for guns. Different zinc content will have different colors. For example, if the zinc content is 18%-20%, it will be red-yellow, and if the zinc content is 20%-30%, it will be brown. In addition, brass has a unique sound when struck, so Eastern gongs, cymbals, bells, horns and other musical instruments, as well as Western brass instruments are all made of brass.