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17-4PH Precipitation Hardening Steel17-4PH

Precipitation Hardening Stainless Steel

An American aerospace grade stainless steel that contains 4% copper and may be hardened by a single low temperature precipitation hardening heat treatment, producing excellent mechanical properties at a high strength level.


Can be supplied in the annealed condition (Condition A) or heat treated as follows:-

  • Condition H900 (900°F)
  • Condition H925 (925°F)
  • Condition H1025 (1025°F)
  • Condition H1075 (1075°F)
  • Condition H1100 (1100°F)
  • Condition H1150 (1150°F)

The material should not be used in the annealed condition. This grade of stainless steel has a typical density of 7.75kg/dm³ and can be magnetised.

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 17-4PH Precipitation Hardening Steel Datasheet

Typical Applications:

Used where high strength and good corrosion resistance are required as well as for applications requiring high fatigue strength, good resistance to galling and stress corrosion resistance.

Suitable for intricate parts requiring machining and welding and where freedom for distortion is a requirement. Used in aerospace, defence and offshore oil & gas industries. For missile components, motor shafts, valve stems, gears and other mechanical components.

Availability & Processing

We offer 17-4PH Precipitation Hardening Steel in bar. We can process your material in-house at one of our dedicated UK service centres. We have thirty power saws available throughout the Smiths Group including a fully automated magazine feed CNC rod blanking line.

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

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