It is made up of mixture metals which is zinc and copper ! Brass is a metal alloy that is always made with a combination of copper and zinc. By varying the amount of copper and zinc, brass can be made harder or softer. Other metals such as aluminum, lead, and arsenic may be used as alloying agents to improve machinability and corrosion resistance. Brass is a popular metal for applications that are both practical and decorative. Items like door handles, lamps, and ceiling fixtures like lights and fans are examples of practical uses that also serve a decorative purpose. Aside from being attractive, brass also is resistant to bacteria, making it that much more useful for fixtures like door handles that multiple people touch frequently. Some uses, such as figures atop bedposts, are strictly decorative. Many musical instruments also are made of brass because it is a very workable metal and can be formed into the sorts of precise shapes necessary for horns, trumpets, trombones, and tubas. These instruments, collectively, are commonly known as the brass section of an orchestra. Because of its low friction and resistance to corrosion, brass also is popular hardware for plumbing fixtures and other building supplies. Pipe fittings, nuts, and bolts are often made of brass to take advantage of its characteristics. Shell casings for ammunition also are a popular use for brass, largely because of its low friction. Brass also is highly ductile, meaning it can be formed into a lot of shapes, making it a popular alloy for use in precision instruments, such as gauges and clocks.

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