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Raw and Finished Materials by Brian Dureu

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2

Nonferrous Alloys

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FIGURE 2.1 Densities, in g/cm3, of various metals.

2.1 COPPER AND ITS ALLOYS

Copper (atomic number 29, symbol Cu) is one of our most important metallic elements, with a domestic U.S. consumption of over 2.1 million metric tons in 2007, according to the United States Geological Survey. It is the mother of hundreds of alloys, including the brasses and bronzes. Copper has excellent thermal and electrical conductivity and is second only to silver in these regards. It is a soft metal and both extremely ductile and malleable. It has an orange-peach color when pure and unoxidized but, when left to weather, it takes on a green patina ...

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