Monel® 404 UNS N04404

Monel® 404 (Nickel 404) has high strength and toughness over a wide temperature range with excellent resistance to many corrosive environments.

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Strip, Coil, Foil, Wire, ASTM F-96


Electronic and electrical devices, marine fixtures, chemical processing equipment, gasoline tanks, boiler feed water heaters and other heat exchangers


Monel® 404 (Nickel 404) has high strength and toughness over a wide temperature range with excellent resistance to many corrosive environments. The alloy also has low permeability and good brazing characteristics.

Chemistry Typical

Nickel + Cobalt: 52.0 - 57 .0
Manganese: 0.10 max
Silicon: 0.10 max
Cobalt: 1.00 max
Iron: 0.50 max
Sulfur: 0.024 max
Carbon: 0.15 max
Copper: Balance
Aluminum: 0.05 max

Physical Properties

Density: 0.322 lbs/in3, 8.91 g/cm3

Electrical Resistivity: ohm-cir mil/ft (microhm-m)
At 70 °F (21 °C): 294 (0.498)

Specific Heat: Btu/lb-°F (J/g-°C)
At 70 °F (21 °C): 0.0989 (0.414)

Thermal Conductivity: BTU/hr/ft2/ft/°F (W/m-°C)
At 70 °F (21 °C)-133 (21)

Mean Coefficient of Thermal Expansion: µin/in-°F,(µm/m°C)
70 - 200 °F (21 - 93 °C) 7.39 (13.3)
70 - 572 °F (21 - 300 °C) 8.50 (15.3)
70 - 1000 °F (21 - 539 °C) 9.22 (16.6)
70 - 1500 °F (21 - 816 °C) 9.78 (17.6)

Modulus of Elasticity: ksi (MPa) in Tension
24.5 X 103 (169 X 103)

Magnetic Permeability, H = 200 Oersteds: Annealed 1.0017 max

Melting Point: 2370 °F (1300 °C)


Coil -Strip, Foil, Ribbon
Wire -Profile, Round, Flat, Square

Mechanical Properties at Room Temperature

Properties: Annealed

Ultimate Tensile Strength: 70 KSI min (483 MPA min)
Yield Strength (0.2% offset): 25 KSI min (172 MPA min)
Elongation: 35% min

Properties: Tempered

Monel® 404 (Nickel 404) can be cold rolled to various tempers. Contact Ulbrich Technical Service for additional information.

Additional Properties

Corrosion Resistance


#1 - Hot rolled annealed and descaled. It is available in strip, foil and ribbon. It is used for applications where a smooth decorative finish is not required.
#2D - Dull finish produced by cold rolling, annealing and descaling. Used for deep drawn parts and those parts that need to retain lubricants in the forming process.
#2B - Smooth finish produced by cold rolling, annealing and descaling. A light cold rolling pass is added after anneal with polished rolls giving it a brighter finish than 2D.
#BA- Bright annealed cold rolled and bright annealed
#CBA- Course bright annealed cold rolled matte finish and bright anneal
#2 - Cold Rolled
#2BA- Smooth finish produced by cold rolling and bright annealing. A light pass using highly polished rolls produces a glossy finish. A 2BA finish may be used for lightly formed applications where a glossy finish is desired in the formed part.
Polished - Various grit finish for specific polish finished requirements.
* Not all finishes are available for all alloys - Contact Sales for applicable finishes.

Wire Finishes

XC - Extra Clean Bright Annealed or Bright Annealed and Cold Rolled Grease - Ultra bright finish (for decorative applications)
Soap - Soap coating on tempered wire to act as lubricant
* Contact Ulbrich Wire for special finish requests.

Heat Treatment

Monel® 404 (Nickel 404) is non hardenable by heat treatment.


For best results refer to: SSINA's "Welding of Stainless Steels and Other Joining Methods".

Limitation of Liability and Disclaimer of Warranty: In no event will Ulbrich Stainless Steels & Special Metals, Inc., be liable for any damages arising from the use of the information included in this document or that it is suitable for the 'applications' noted. We believe the information and data provided to be accurate to the best of our knowledge but, all data is considered typical values only. It is intended for reference and general information and not recommended for specification, design or engineering purposes. Ulbrich assumes no implied or express warranty in regard to the creation or accuracy of the data provided in this document.

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