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.

Alloy 718 (Inconel® 718)

Nickel Chromium Alloy

Alloy 718 Nickel Alloy

Alloy 718 is a nickel-chromium alloy which can be readily fabricated and has outstanding welding characteristics, especially if resistance to post-weld cracking is required.


The ease in which Alloy 718 can be fabricated offers significant benefits to the customer in terms of economy and performance. The material provides a combination of high tensile, fatigue, rupture and creep strength making it an extremely versatile alloy. Alloy 718 is used in applications ranging from simple fasteners to cryogenic tanks and rocket fuel cylinders.

Corrosion Resistance

Alloy 718 has versatile resistance to corrosion which is outstanding, even in severely corrosive environments. The material also shows superior resistance to high-temperature effects such as oxidation and carburization. It is an excellent choice for seawater and sour gas applications.

Typical Applications

Commercial applications for this engineering material include:

  • Wellhead components
  • Safety valves
  • Downhole equipment
  • Containment vessels
  • Cryogenic tankage
  • Gas turbine engines
  • Components for liquid fuelled rockets
  • Aircraft engines

We stock Alloy 718 in round bar, plate and sheet.

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 Alloy 718 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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