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Brass is an alloy of copper and zinc, in proportions which can be varied to achieve different colours and mechanical, electrical, acoustic and chemical properties, [1] but copper typically has the larger proportion, generally 66% copper and 34% zinc. In use since prehistoric times, it is a substitutional alloy: atoms of the two constituents may ...
Brass, alloy of copper and zinc, of historical and enduring importance because of its hardness and workability. The earliest brass, called calamine brass, dates to Neolithic times; it was probably made by reduction of mixtures of zinc ores and copper ores. Learn more about brass in this article.
Jan 30, 2020 · Basic modern brass is 67% copper and 33% zinc. However, the amount of copper may range from 55% to 95% by weight, with the amount of zinc varying from 5% to 45%. Lead is commonly added to brass at a concentration of around 2%. The lead addition improves the machinability of brass.
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Britannica Dictionary definition of BRASS. 1. [noncount] : a yellow metal that is made by combining copper and zinc. a candlestick made of brass. — often used before another noun. a brass candlestick. 2.
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The melting point of brass can be 900 to 940 °C or 1,650 to 1,720 °F, depending on what it is made of. The density of brass is 8.4 to 8.73 g/cm 3 (0.303 to 0.315 lb/cu in). [1] Today, almost 90% of all brass alloys are recycled. Brass is not ferromagnetic. Brass scrap is collected and transported to the foundry.
