Monel 400, Alloy 400

N04400 tubing, Monel 400 plates, Alloy 400 tubing

Monel 400 (UNS N04400) is a Nickel-Copper alloy and performs excellently in seawater and chemical environments. This alloy has superb corrosion resistance compared with other Nickel-Copper alloys particularly resist in neutral and alkaline salts. It is particularly resistant to hydrochloric and hydrofluoric acids when they are de-aerated. LKALLOY mainly stocks and produces Alloy 400 plate, Alloy 400 pipe, Alloy 400 bar and other forms in various size and specifications.

Available Forms And Specifications

Monel 400 Sheet / Plate / Strip: ASTM B127
Monel 400 Seamless Pipe / Tube:  ASTM B165
Monel 400 Welded Pipe / Tube: ASTM B725, ASTM B730
Monel 400 Rad / Bar / Wire: ASTM B164 QQ-N-281, Din 17750
Monel 400 Fittings: ASTM B 366, ASME SB-366
Monel 400 Forgings: ASTM B564

Chemical Composition

63min28.0- max0.50 max2.0 max0.024max0.30max

Mechanical Properties

Density, g/cm³8.8
Melting range, °C1300 – 1350
Tensile strength, min, Mpa550
Yield strength, 0.2% offset, min, Mpa240
Elongation, %, min40
Hardness, Rockwell60-80


The alloy has been used in a variety of applications. Monel 400 is used in chemical, petroleum and marine industries such as Packed columns, Pressure vessels and reactors, Brine heaters, Heat exchangers, Salt production equipment, Pump and valve components, Pipework and pipe spool.

LKALLOY is a leading supplier of Monel 400 and other high-quality special metal alloys with decades of experience and extensive specifications. To buy or learn more about Alloy 400, contact us now.

Inquire Now