13-8 is a precipitation hardened martensitic stainless steel alloy that is melted as VIM+VAR. This alloy offers good corrosion resistance and excellent strength. The addition of Molybdenum allows improved pitting resistance as compared to other precipitation hardened grades such as 15-5 and 17-4.  Universal Stainless offers this alloy and a wide range of specs and product forms. 

Please inquire today about your steel needs.

Specs USAP Produces to:
  • AMS 5629
  • AMS 5864
  • ASTM A564
  • ASME SA564
  • ASTM A705 (capability)
  • ASTM F899
  • Rockwell ST0160LB0013
  • Schlumberger SH350516, 100127819, and T1037098
  • 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
  • PH13-8
  • 13-8mo
  • 13-8mo H1000
  • PH13-8mo H1000
  • 13Cr-8Ni
  • UNS S13800
  • DIN 1.4534
  • AISI 632
  • XM-13
  • Aerospace
  • Oil & Gas
  • Other Industrial Markets
Melt Types
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.