About Smiths

We are a world-class supplier of engineering raw materials. Our objective is to provide all our customers, from the small machine shop to the large multi-national corporation, a supply path that continuously delivers the highest levels of service, quality and value.

Monel® 400 ( UNS N04400)

Nickel-Copper Alloy

Monel® 400 Nickel Alloy

Monel® 400 (UNS N04400) offers excellent corrosion resistance in a variety of environments.

Corrosion Rates

Corrosion rates are low, particularly in rapidly flowing brackish or seawater. The product also provides excellent resistance to stress-corrosion cracking in freshwater. Monel® 400 is a solid-solution alloy which can be hardened by cold working. The product promotes attractive performance characteristics, including good weldability and high strength and retains its properties at sub-zero temperatures. The material is also suitable for use in high-temperature environments up to 1000° F.


Due to the alloys copper content, Monel® 400 is a viable, low-cost alternative when compared to commercially pure nickel.

Typical Applications

Commercial applications for this engineering material include:

  • Crude petroleum stills
  • Valves, pumps and shafts
  • Distillation towers
  • Heat exchangers
  • Fittings and fasteners

We stock Monel® 400 in round bar and round tube.

Technical Assistance

Our knowledgeable staff and resident metallurgists will be pleased to assist you further on any technical topic. Smiths Metal Centres Limited also boasts an in-house UKAS Accredited Testing Laboratory which is unique within the multi-metal and plastic stockholding sector. We believe this underlines our total commitment to quality and our ethos of being the complete service provider.

Additional Info

A technical datasheet for Monel® 400 is available in PDF file format. To view and download, please click here.

We offer in-house processing options - for more information, please refer to our processing services.

Read our corporate brochure by clicking here.

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