Monel 404 (UNS N04404 / W.Nr. 2.4867)

Monel 404 (UNS N04404 / W.Nr. 2.4867) is a nickel-copper alloy which is used primarily in electrical and electronic application. Similar to Monel 401, the chemical composition of Monel 404 is carefully adjusted to provide a very low curie temperature, low permeability, and good brazing characteristics.

Equivalent Grades

Monel 404Monel 404N044042.4867

Chemical Composition, %

Monel 404≤0.15≤0.10≤0.10≤0.020≤0.03052.0-57.0Bal≤0.05≤0.50

Typical Physical and Mechanical Properties (RT, Annealed)

Density, g/cm3Melting Point, ℃Tensile Strength, MPaYield Strength, MPaELongation, %Hardness, HRB

Available Products and Specifications

Rod, Bar, Wire and ForgingsASTM B164, ASME SB164, DIN 17752
Plate, Sheet and StripDIN 17750
Pipe and TubeDIN 17751
Welding Product
OthersASTM B366, ASME SB366, DIN 17743


Monel 404 has low magnetic permeability and low Curie temperature. Because its low magnetic permeability is not significantly affected by processing and fabrication, it is particularly suitable for electronic parts.


  • Electronic and electrical devices
  • Marine fixtures
  • Chemical processing equipment
  • Gasoline tanks
  • Boiler feed water heaters
  • Heat exchangers