Project Description

Monel 404 (UNS N04404)

Monel 404 (UNS N04404) 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

Product Forms

Wire, Bar, Strip, Sheet, Plate, Tube, Pipe, Pipe Fittings, Forgings

Chemical Composition,%


Typical Physical & Mechanical Properties  (RT, Annealed)

Density, g/cm3Melting Point, ℃Tensile Strength, MPaYield Strength, MPaElongation,%


Rod, Bar, Wire, ForgingsASTM B164/ASME SB164, DIN 17752-17754
Plate, Sheet, StripASTM B127/ASME SB127, DIN 17750
Pipe, TubeASTM B163/ASME SB163, ASTM B725/ASME SB725, ASTM B775/ASME SB775, ASTM B751/ASME SB751, DIN17751
OthersASTM B366/ASME SB366(Fittings), 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