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Monel 400 (NiCu30Fe, 2.4360, N04400, NA13)

Monel 400 is a nickel alloy formulated for primary forming into wrought products. 2.4360 is the EN numeric designation for this material. NiCu30Fe is the EN chemical designation. N04400 is the UNS number. NA13 is the British Standard (BS) designation. And Monel 400 is the industry name.

It has three common variants, each represented as a separate material. The material properties section shows ranges encompassing all variants. To see the details of each variant on a separate page, follow the links in the Variant Materials section further below.

Mechanical Properties

Graph bars compare Monel 400 to other materials. From top to bottom: wrought nickel, nickel alloys, and the entire database.

Elastic (Young's, Tensile) Modulus

160 GPa 24 x 106 psi

Elongation at Break

20 to 41 %

Modulus of Resilience (Unit Resilience)

140 to 1100 kJ/m3

Poisson's Ratio


Shear Modulus

65 GPa 9.4 x 106 psi

Strength to Weight Ratio

60 to 88 kN-m/kg

Tensile Strength: Ultimate (UTS)

540 to 790 MPa 78 to 110 x 103 psi

Tensile Strength: Yield (Proof)

220 to 600 MPa 31 to 87 x 103 psi

Unit Rupture Work (Ultimate Resilience)

140 to 180 MJ/m3

Thermal Properties

Curie Temperature

43 °C 110 °F

Melting Onset (Solidus)

1300 °C 2370 °F

Specific Heat Capacity

430 J/kg-K 0.1 BTU/lb-°F

Thermal Conductivity

23 W/m-K 13 BTU/h-ft-°F

Thermal Diffusivity

6.0 m2/s

Thermal Expansion

15 µm/m-K

Other Material Properties

Base Metal Price

89 % relative

Calomel Potential

-80 mV


9.0 g/cm3 560 lb/ft3

Electrical Conductivity: Equal Volume

33 % IACS

Electrical Conductivity: Equal Weight (Specific)

33 % IACS

Electrical Resistivity Order of Magnitude

-7.0 10x Ω-m

Embodied Carbon

8.0 kg CO2/kg material

Embodied Energy

110 MJ/kg 49 x 103 BTU/lb

Embodied Water

260 L/kg 31 gal/lb

Alloy Composition

Nickel (Ni) 63 to 72
Copper (Cu) 28 to 34
Iron (Fe) 0 to 2.5
Manganese (Mn) 0 to 2.0
Silicon (Si) 0 to 0.5
Carbon (C) 0 to 0.3
Sulfur (S) 0 to 0.024

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Variant Materials

Similar Alloys

Further Reading

ASTM B127: Standard Specification for Nickel-Copper Alloy (UNS N04400) Plate, Sheet, and Strip

ASTM B164: Standard Specification for Nickel-Copper Alloy Rod, Bar, and Wire

ASTM B165: Standard Specification of Nickel-Copper Alloy (UNS N04400) Seamless Pipe and Tube

ASTM B564: Standard Specification for Nickel Alloy Forgings

ASTM B725: Standard Specification for Welded Nickel (UNS N02200/UNS N02201) and Nickel Copper Alloy (UNS N04400) Pipe