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MONEL ALLOY 400

Description: A nickel-copper alloy with high strength and excellent corrosion resistance in a range of media, including seawater, hydrofluoric acid, sulfuric acid, and alkalies.

Major Applications: Used for marine engineering, chemical and hydrocarbon processing equipment, valves, pumps, shafts, fittings, fasteners, and heat exchangers.

Analysis in Weight Percent:

              Ni (+ Co)             63.0 min                             Cu                        28.0 - 34.0

              Fe                        2.5                                      Mn                       0.20

              Si                         0.50                                    S                          0.024

              C                          0.30

Mechanical Properties (at Room Temperature):

                                                                                      MPa                    ksi

Ultimate Tensile Strength:                                         550                      80

Yield Strength (0.2% offset):                                     240                      35

                                                                                      GPa                     10⁶ psi

Elastic Modulus (Tension):                                        180                      26

Elongation in 50mm (2 in): 40%

Hardness: 110 - 150 HB

Physical Properties (at Room Temperature):

                                                                                      ^oC                                      ^oF 

Melting Point/Range:                                                  1300 - 1350                       2370 - 2460

Curie Temperature:                                                    20-50                                 70-120

                                                                                      J/kg ⋅ K                             Btu/lb ⋅ ^oF

Specific Heat:                                                              427                                     0.102

                                                                                      µm/m ⋅ K                           µin/in ⋅ ^oF

Average Coefficient of Thermal Expansion:            13.9                                    7.7

                                                                                      W/m ⋅ K                            Btu ⋅ in/ft² ⋅ h ⋅ ^oF

Thermal Conductivity:                                               21.8                                    151

Electrical Resistivity (nΩ ⋅ m): 547

Density (g/cm³): 8.80