Applications of Monel 400:

Nickel alloy Monel 400 is widely used in marine engineering, chemical and hydrocarbon processing equipment, valves, pumps, shafts, fittings, fasteners, and heat exchangers. Typical applications include feed-water and steam-generator tubing, brine heaters and seawater scrubbers, sulfuric acid and hydrofluoric acid alkylation plants, pickling bath heating coils, and transfer piping from oil refinery crude columns.

Normal product forms: Pipes, tubes, sheets, strips, plates, bars, forgings, hexagons, and wires.

Specifications/Standard:  ASTM B 127, B 163 – B 165, B 366, B 564, B 725, B 730, B 751, B 775, B 829, ASME SB-127, SB-163 – SB-165, SB-366, SB-564, SB-725, SB-730, SB-751, SB-775, SB-829

• Nickel (Ni) + Cobalt (Co): 63.0% min

• Copper (Cu): 28.0 – 34.0%

• Iron (Fe): 2.5% max

• Manganese (Mn): 2.0% max

• Carbon (C): 0.3% max

• Sulfur (S): 0.5% max

• Silicon (Si): 0.024% max

Physical Constants and Thermal Properties

• Density: 8.80 g/cm3 or 0.318 lb/in.3

• Melting Range: 1300-1350°C or 2370-2460°F

• Modulus of Elasticity: 26.0 x 10^3 ksi

• Poisson’s Ratio: 0.32

• Curie Temperature: 21-49°C or 70-120°F

• Thermal Expansion (20-100°C): 14.1 x 10^-6 m/m/degC

• Specific Heat (20°C): 419 J/kg.K

• Thermal Conductivity (20°C): 21.8 W/m.K

Mechanical Property:

• Tensile Strength (annealed): 517-655 MPa or 75-95 ksi

• Yield Strength (annealed): 276-517 MPa or 40-75 ksi

• Elongation at Break (annealed): 30-45%

• Hardness: 125-215 Brinell