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Monel Corrosion

Monel or Alloy 400, is a nickel alloy containing 65-70 percent nickel, 20-29 percent copper, and small amounts of iron, manganese, silicon and carbon discovered due to the efforts of Robert Crooks Stanley, who worked for the International Nickel Company (INCO) in 1901. The new alloy which was named in honor of the president of the company, Ambrose Monell, was said to be:

Monel strainer corroded at the seawater line

Monel strainer corroded at the seawater line

In the 1920s and 30s, Monel was available in both hot-rolled and cold-rolled sheets typical finishes included brightly polished, "hand-forged" black, and two-toned in outdoor applications, Monel develops a patina ranging from light gray-green to medium brown.

Typical Uses

Natural or Inherent Problems