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Copper-Nickel Alloys - Marine Supreme: Illustrations

Copper Applications in Metallurgy of Copper & Copper Alloys

June 2000

By Vin Callcut

Morecambe Bay gas platform The steel legs of the Morecambe Bay gas platform are clad with 90/10 copper-nickel alloy sheet to protect them from corrosion, abrasion and biofouling caused by the sea. (British Gas)

Copper-nickel water box for shipboard seawater cooling system Copper-nickel water box for shipboard seawater cooling system. (James Robertson Ltd.)
 

Special copper alloys are used for the manufacture of most coins. The surface layers of the U.S. quarter, dime, 50-cent piece and Susan B. Anthony dollar are made from a 25% nickel-75% copper alloy. The figure shows the reverse sides of the first five "state quarters" issued by the U.S. Mint.