Nickel Alloy 400 / UNS N04400

Alloy 400


Applications Alloy 400:
Alloy 400 is a nickel-copper alloy with high strength and excellent corrosion resistance in a range of media including sea water, hydrofluoric acid, sulfuric acid, and alkalies. Used for marine engineering, chemical and hydrocarbon processing equipment, valves, pumps, shafts, fittings, fasteners, and heat exchangers.

Chemical analysis Alloy 400:
Nickel – 63,0% min. (incl. cobalt)
Copper -28,0-34,0% max.
Iron – 2,5% max.
Manganese –  2,0% max.
Carbon – 0,3% max.
Silicon – 0,5% max.
Sulfur –  0,024% max.

Alloy 400 ASTM standards:
Bar/Billet – B164
Forgings/Flanges – B564
Seamless Tubing –  B163
Welded Tubing –  B730
Seamless Pipe – B165
Welded Pipe – B725
Plate – B127
Buttweld fittings – B366

Density Alloy 400: 8,83