Overview If multiple alloy brass is composed of two or more elements called special brass. The copper alloy of lead, tin, manganese, nickel, iron, silicon composition. Special brass special brass called it high strength, hardness, resistance to chemical corrosion. There machining mechanical properties are more prominent. Brass has strong wear resistance. The pull from the brass into a seamless copper tube, soft, strong wear resistance. Seamless brass heat exchangers and condensers can be used for low temperature piping, sea transport pipe. Manufacture of sheet, strip, bars, tubing, casting parts. 62% copper 68%, strong plastic, manufacturing pressure equipment. According brass alloy elements contained in different types of brass is divided into ordinary brass and special brass two. Pressure called deformation processing of brass brass. Brass to zinc as the main element of the copper alloy, with a beautiful yellow, collectively referred to as brass. Cu-Zn binary alloy that ordinary brass, or a simple brass. More than triple brass said the complexity of special brass or brass. Less than 36% zinc brass alloy by solid solution, with good cold working properties, such as 30% zinc brass used to make shells, commonly known as cartridge brass or seventy-three brass. Zinc between 36 to 42% of the brass alloy by solid solution, of which the most commonly used is 40% zinc brass Tiananmen. To improve the performance of ordinary brass, and often add other elements such as aluminum, nickel, manganese, tin, silicon, lead. Brass aluminum can improve the strength, hardness and corrosion resistance, but the plastic lower condenser suitable for sea vessels, and other corrosion-resistant parts. Brass tin can improve the strength and corrosion resistance to seawater, it said the Navy brass, used thermal equipment and ship propellers and so on. Lead can improve the cutting performance of brass; this cutting brass is often used as watch parts. Brass castings used to produce valves and pipe fittings.