Monel 400 | Monel 400 Round Bar

Shapes Available

  • Coil
  • Flat Bar
  • Hex Bar
  • Pipe
  • Plate
  • Round Bar
  • Sheet
  • Square Bar
  • Tubing


  • Aerospace
  • Electrical
  • Marine
  • Oil Refining

Industry Names

  • Monel
  • Nickel 400
  • Alloy 400


  • Exotic
  • Specialty Steel


  • ASTM B127 QQ-N-281 (Plate)
  • ASTM B127 QQ-N-281 (Wire
  • ASTM B164 QQ-N-281 (Bar)
  • ASTM B165 (Pipe)
  • ASTM B165 (Tube)
  • UNS N04400


  • Electrical and Electrical Components
  • Feed Water and Steam Generator Tubing
  • Heat Exchangers
  • Marine Fixtures
  • Propeller and Pump Shafts
  • Pumps and Valves
  • Sulfuric Acid and Hydrofluoric
  • Tanks
  • Transfer Piping from Oil Refinery Crude Columns
  • Valves


  • Corrosion Resistant in a Variety of Marine and Chemical Environments
  • Excellent Resistance to Chloride Ion Stress Corrosion Cracking
  • Good Mechanical Properties from Sub-Zero Temps to 480° C

Monel 400® or Alloy 400 (UNS N04400) is a nickel-copper alloy with superior corrosion resistance, moderate/high strength and good weldability. Is alloy 400 the same as Monel 400? Yes, alloy 400 is the same as Monel 400. Special Metals holds the tradename to Monel and so unless you are Special Metals, if you produce this grade, it’s Alloy 400. Monel 400 is resistant to a variety of corrosive conditions. For instance, acidic applications involving hydrofluoric acid, saltwater, sulfuric acid and alkalies. Alloy 400 can only be hardened by cold working. Monel 400 is used across many industries especially marine and chemical processing due to it’s superior corrosion resistance.

400’s mechanical properties in sub zero temperatures are excellent. The strength and hardness of Alloy 400 increase with only a minor decrease of impact resistance or ductility. 400 can maintain its toughness over a large range of temperatures.

Monel Alloy 400 when compared to other higher copper alloys is for the most part more resistant to attack by oxidizing. Those attributes of Alloy 400 make it suitable in a variety of environments, especially in marine environments

Monel 400 is available round bar, tubing, flat bar, hex bar, pipe, plate, sheet, coil and square bar. One of the more common specifications of Monel 400 is QQ-N-281. If you require Monel 400 please call Michlin today with any Alloy 400 requirements. Also, if you are looking for where to buy Alloy 400 plate, call Michlin Metals today. For other Nickel alloys head back here to our specialty alloys page.

Looking for more info on Nickel Alloys or more specifically Monel? Click here to check out the transcript to our latest YouTube Video on Monel! Watch below:

Please contact us to request a quote. We specialize in hard to find material.

We work closely with many manufacturers in the aerospace & defense industry. We work with NADCAP approved heat treaters and testing laboratories. We can supply DFARS compliant material.

Metal Properties
.2% Yield Strength 60 ksi
Elongation 20 % *not applicable to diameters or cross sections under 3/32 inches
Ultimate Tensile Strength 87 ksi
Chemical Composition
C- 0.3
Cu28.0 34.0
Fe- 2.5
Mn- 2.0
S- 0.024
Si- 0.5
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