17-4 is a precipitation hardened martensitic stainless steel alloy that is melted in AOD, AOD+ESR, or AOD+VAR melt type. This alloy offers good corrosion resistance and excellent strength. 17-4 is one of the most common PH stainless steels and is used in a wide variety of markets. Universal Stainless offers this alloy in a wide range of specs and product forms. 

Please inquire today about your steel needs.

Specs USAP Produces to:
  • AMS 5643
  • AMS 5604
  • AMS 5622
  • ASTM A564
  • ASTM A705 (capability)
  • ASME SA564
  • Rockwell MB0160-003
  • Rolls Royce MSRR 6601
  • AMS STD 2154

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.


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

Industry / Trade Names
  • PH17-4
  • 17-4
  • 17-4PH
  • 17-4 H1025
  • 17-4 H1075
  • 174 H1150
  • 174 HH1150
  • 17Cr-4Ni
  • AISI 630
  • UNS S17400
  • DIN 1.4542
  • X5CrNiCuNb16-4
  • Aerospace
  • Oil & Gas
  • Other Industrial Markets
Melt Types
  • AOD
Grade Families
  • Precipitation Hardenable
  • Stainless Steel

DISCLAIMER: The information provided on this Web site, technical or otherwise, is merely for informational purposes, and is not intended to serve as a guide, manual, instructions, or any kind reference for proper safety procedures or material purchasing. Universal Stainless makes no warranty, express or implied, based on the statements on this Web site and, as such, will not be liable for any damages, either direct or indirect, including but not limited to consequential damages, such as damages for loss of profits, that may arise based on reliance on the information provided on this Web site. Some information has been referenced from reliable industry sources.