Alloy 400 / Monel 400 ®

General Characteristics

Alloy 400 / Monel 400® (W-Nr. 2.4360/2.4361; UNS N04400) it is a copper-nickel alloy, characterized by high corrosion resistance in a variety of environments, including marine conditions, hydrofluoric acid, sulfuric acid, and alkaline solutions such as caustic soda.

Alloy 400 was directly derived from refined ore bodies in Canada and offers a lower-cost alternative to commercially pure nickel due to its copper content of approximately 30% by weight, while retaining very similar characteristics. Nichel 200/Nichel 201. The alloy in solid form can be hardened through cold working, but it can also be hot- or cold-processed, followed by annealing in complex fabrications and welded using an appropriate process. The internals of oil distillation towers, fasteners and fittings, pumps, and valve internals have used this alloy for over 100 years since its market introduction in 1905.

It is used in marine technology, production equipment for the chemical industry, valves, pumps, shafts, fittings, fasteners, and heat exchangers.
Monel 400 is used for process vessels, heat exchanger piping, and storage tanks for gasoline and potable water in the marine sector. Its non-sparking nature makes it suitable for high-risk environments such as the explosives industry, rocket manufacturing, and the pulp and paper industry. Its high mechanical strength, ductility, and resistance to atmospheric corrosion make it well suited for manufacturing rivets used in aircraft construction.