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Brass is an alloy of copper and zinc that is widely used in a variety of ways. Common terms and information in recycling brass:Yellow Brass The most commonly used brass, it is employed in household plumbing, such as faucets and "under the sink" plumbing. Likewise, most of people's door keys are made of yellow brass. Although many different alloy percentages can be found, yellow brass usually contains around 60% to 70% copper, 30% to 40% zinc and trace amounts of lead and tin. Yellow brass prices depend on the market price of copper and zinc. Red Brass Although this reddish pink brass' usage is declining, it is still commonly recycled. The red tint is due to the high amount of copper as Red Brass is made up of 85% copper and15% zinc, with very small traces of lead and tin. Common uses, among others, include sprinklers and shut off valves. Semi-red Brass As a cheaper element mixture that is equally as useful as red brass, Semi-red Brass is slowly replacing the older "Red Brass" in today's market place. This type of brass consists of a mixture of 80% copper, 10% zinc, 5% tin, 2-3% lead and other trace elements. It's common uses are similar to red brass.
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Some notes on brass
