Monel 400/UNS N04400 sheet/bar/pipe
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  • Parameter

UNS N04400

DIN W. Nr. 2.4360, 2.4361

Monel 400 is a Nickel-Copper alloy that is resistant to;seawater and steam at;high temperature as well as to salt and caustic solutions. Alloy 400 is a solid solution alloy that can only be hardened by;cold working.This nickel alloy exhibits characteristics like good corrosion resistance,good weldability and high strength. A low corrosion rate in rapidly flowing brackish or seawater combined with excellent resistance tostress-corrosion cracking in most freshwater, and its resistance to variety of corrosive condition led to its wide use in marine application and other non-oxidizing;chloride solutions.

Monel 400 Trade Name:Alloy400;UNS N04400;W.Nr.2.4360;

Rod, bar and wire B 164
Plate, sheet and strip B 127, B 906
Seamless pipe and tube B 165, B 829
Welded pipe B 725, B 775
Welded tube B 730, B 751
Welding fitting B 366
Forging B 564

Chemical composition

% Ni Cu Fe C Mn Si S
min 63.0 28.0
max 34.0 2.5 0.30 2.00 0.50 0.024

Physical properties

Density 8.80 g/cm3
Melting range 1300-1350℃

Features:Monel 400 has excellent resistance to corrosion by many reducing media such as sulfuric and hydrochloric acids. It is generally more resistant to corrosion by oxidizing media than higher copper alloys. Monel 400 resists pitting and stress corrosion cracking in most fresh and industrial waters. It has good resistance in flowing seawater, but under stagnant conditions, pitting and crevice corrosion is induced. Monel 400 is probably the most resistant to hydrofluoric acid in all concentrations up to the boiling point, of all engineering alloys. Monel 400 is notable for its toughness, it does not show embrittlement tendency at cryogenic temperatures. It is work hardenable.

Applications:Chemical process equipment, crude oil stills, gasoline and fresh water tanks, marine engineering equipment, valves, pumps and fasteners.

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