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BS S132 Aerospace Steel BarBS S132

3% Chromium-Molybdenum Nitriding Steel

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).

Key Features:

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

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.

Download BS S132 Aerospace Steel Bar Datasheet

Typical Applications:

  • Gearbox shafts
  • Crankshafts

We offer BS S132 aerospace steel in bar and forgings.


With thirty power saws available across the Smiths Group, we can efficiently cut your material to size regardless of quanity. This includes a fully automated magazine feed CNC rod blanking line.

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To find out more about Smiths Metal Centres extensive range of high quality aerospace steel bars, click on one of our products on the side menu of this web page.

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