Nickel Alloys, Cupro-Nickel (Copper-Nickel)Alloy 400 Bar & Forgings

A nickel copper grade, that combines high strength and corrosion resistance.

Alloy 400 is a ductile, nickel copper based alloy comprised essentially of two thirds nickel and one third copper. Alloy 400 is known for resistance to a variety of corrosive conditions, including alkalies (or acid like substances), saltwater, hydrofluoric acid and sulphuric acid. Other advantages of using this alloy are its toughness and high strength over a broad temperature range; it can also be manipulated to become magnetic if desired.

This alloy is supplied:

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Product FormSize Range
Round Bar NA13 2.4360 UNS N0440034" - 4"
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Related Specifications

  • ASTM B164-03 (2014)/UNS NO4400
  • BS3076 NA13
  • NACE MR0175/0103


Chemical Composition


  • Pump and valve components
  • Electrical components
  • Marine hardware and fixtures
  • Shafts
  • Heat exchangers
  • Electrical and electronic components
  • Boiler feedwater heaters
  • Fresh and salt water tanks
  • Process vessels and piping


  • Excellent corrosion resistance in marine environments
  • High strength and hardness
  • Broad temperature range
  • Easily processed and machined
  • Resistant to chloride stress corrosion
  • Readily weldable

Additional Information


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