Monel
Solid-solution binary alloy of nickel and copper / From Wikipedia, the free encyclopedia
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Monel is a group of alloys of nickel (from 52 to 67%) and copper, with small amounts of iron, manganese, carbon, and silicon. Monel is not a cupronickel alloy because it has less than 60% copper.
Stronger than pure nickel, Monel alloys are resistant to corrosion by many aggressive agents, including rapidly flowing seawater. They can be fabricated readily by hot- and cold-working, machining, and welding.[2]
Monel was created in 1905 by Robert Crooks Stanley, who at the time worked at the International Nickel Company (Inco).[3] Monel was named after company president Ambrose Monell, and patented in 1906.[4] One L was dropped, because family names were not allowed as trademarks at that time.[1] The trademark was registered in May 1921,[5] and the name is now a trademark of Special Metals Corporation.
As an expensive alloy, its use is limited to those applications where it cannot be replaced with cheaper alternatives.[citation needed] For example, in 2015 Monel piping was three times more expensive than the equivalent piping made from carbon steel.[6]