17-7 is a precipitation hardened semi-austenitic stainless steel that is melted as AOD melt type.  This alloy offers excellent fatigue strength and good corrosion resistance.  This grade is often used as springs and washers that require high strength.  It is also readily used in the aerospace and chemical processing industries.

Please inquire today about your steel needs.

Specs USAP Produces to:
  • AMS 5644
  • ASTM A564 (type 631)

Don't see the spec you're looking for? Not all specs are listed so please submit an inquiry!

Product Forms Sold:

Size ranges vary by specification and specific order requirements; inquire for your specific needs.

Industry / Trade Names
  • 17-7
  • 17-7PH
  • UNS S17700
  • DIN 1.4568
  • Type 631
  • Aerospace
  • Oil & Gas
  • Other Industrial Markets
Melt Types
  • AOD
Grade Families
  • Precipitation Hardenable
  • Stainless Steel

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