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.

17 7PH (AMS 5528)

Precipitation Hardening Stainless Steel

17 7PH Precipitation Hardening Stainless Steel

17-7 PH is a precipitation-hardening stainless steel which combines high strength and hardness.

Popular in Aerospace

The alloy has excellent fatigue properties, good corrosion resistance and is easily formed. Due to the alloys good mechanical and physical properties, 17-7PH is particularly popular in the aerospace sector. The alloy can be used in the manufacture of flat springs up to 315°C (600°F).


17-7PH offers high strength and hardness with minimum distortion under heat treatment. With good formability and excellent fatigue properties, the alloy provides good corrosion resistance. The attractive combination and strength and hardness results in use in such market sectors as aerospace and defence.

Typical Applications

Commercial applications for this engineering material include:

  • Tooling in the Aerospace Industry
  • CNC components
  • Mould & gauge making
  • General tooling
  • Bulkheads
  • Retaining rings
  • Springs

We stock 17 7PH in round bar, plate, sheet and wire.

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 17 7PH 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.

Interested in this product?
Why not get in touch?


Click Here