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.

Ferrinox 255™

Super Duplex Stainless Steel

Ferrinox 255™ Super Duplex Stainless Steel

FERRINOX 255™ is categorised as a super duplex (austenitic/ferritic) stainless steel.


This high-performance alloy combines high mechanical strength (typically up to over 600 MPa yield strength) and good ductility with outstanding corrosion resistance to marine environments and a wide, diverse range of industrial media. These attributes result in the widespread specification of FERRINOX 255™ as an alternative to 300 series stainless steel (such as type 316), standard 22% Cr duplex steel, precipitation hardening stainless steels (typical 17/4PH) and the alloy can in some instances, reduces the need to choose a much higher cost nickel-based alloy.

Success in Industry

The highly attractive combination of attributes provided by FERRINOX 255™ has led to many years of successful application in defence, oil & gas production, chemicals processing, pollution control (FGD), pulp & paper production, architecture and nuclear engineering.

Typical Applications

Commercial applications for this engineering material include:

  • Defence
  • Oil & Gas
  • Nuclear
  • Chemical
  • Pollution Control
  • Leisure
  • Marine

We stock Ferrinox 255™ in round bar, plate, sheet, wire and hexagon bar.

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 Ferrinox 255™ 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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