321 Stainless Steel

321 is an austenitic stainless steel that is melted as AOD melt type.  This is a stabalized version of 304 stainless to help improve intergranular corrosion resistance.  This alloy is similar to 347 stainless except uses titanium to stabilize the carbon instead of niobium. The improved corrosion resistance allows this grade to be used in service at much higher temperatures close to 1000oF.  These high temperature applications include aircraft applications such as exhaust manifolds and expansion joints.

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Specs USAP Produces to:
  • AMS 5645
  • AMS-QQ-S-763
  • ASTM A193 (B8T)
  • ASTM A276
  • ASTM A320
  • ASTM A479
  • ASME A479

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
  • UNS S32100
  • Din 1.4541
  • Aerospace
  • Oil & Gas
  • Other Industrial Markets
Melt Types
  • AOD
Grade Families
  • Austenitic
  • Stainless Steel

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