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.


Aerospace Steel Bar

S154 Aerospace Steel Bar

BS S154 aerospace steel bar is a 2½% Nickel-Chromium-Molybdenum steel generally available in bars and forgings with a tensile strength(Rm) of 880-1080 N/mm².

Bright bar

It is the British aerospace equivalent to 826M31 (EN25) and is generally supplied as bright bar in the generally heat treated and cold drawn condition. With high tensile and yield strength, BS S154 finds many uses in the aerospace sector and as a general engineering alloy. The material also benefits from good toughness, good creep resistance and can be used in higher temperature applications.


BS S154 aerospace steel bar is a high tensile and high yield steel product. It is a good general engineering alloy with widespread applications. BS S154 is the British Aerospace equivalent specification to 826M31 (EN25).

Typical Applications

Commercial applications for this engineering material include:

  • Shafts and gears
  • Boiler support rods
  • Bolts and nuts
  • Fasteners
  • Mechanical parts
  • Connecting rods

We stock S154 in flats, round bar, square bar 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 S154 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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