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 Stainless Steel Bar

S124 Aerospace Stainless Steel Bar

BS S124 is a martensitic type 416 stainless steel containing 12% chromium.

Free Machining

The alloy offers excellent free machining properties due to the addition of sulphur. However, this comes at the cost of reduced corrosion resistance, formability & weldability.


BS S124 aerospace stainless steel bar is a free matching alloy which is suitable for automatic lathes. The alloy can be heat treated, and the increased levels of sulphur content result in the materials enhanced machinability. The product is based on 416 stainless steel. We offer billeting services at our bulk warehouse in Biggleswade and across our UK network of 14 service centres.

Typical Applications

Commercial applications for this engineering material include:

  • Aerospace components
  • Turbine blades
  • Suspension components
  • Bearings
  • Automotive parts
  • Fasteners

We stock S124 in round 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 S124 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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