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

S132 Aerospace Steel Bar

BS S132 in the British Standard Aerospace Series is a 3% Cr-Mo-V nitriding steel offering a tensile strength of 1,320-1,470 MPa. (excellent hardenability for high core strength) and develops a hard wear resistant case after surface treatment.


The alloy is usually produced by single melting in air followed by electroslag refining (ESR) but is also available as a vacuum arc remelted version. Bars and, where applicable, forgings are subjected to ultrasonic examination. Bars are usually supplied bright in the softened condition. Final heat treatment consists of hardening at 950°C (oil quench) followed by tempering at not less than 600°C (air cool).


BS S132 aerospace steel bar is supplied in the bright and softened condition and is used in complex components including gearboxes and crankshafts.

Typical Applications

Commercial applications for this engineering material include:

  • Gearbox shafts
  • Crankshafts

We stock S132 in flats and 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 S132 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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