N40 Stainless Steel

N40 is a high manganese, high nitrogen, austenitic stainless steel melted as AOD or AOD + ESR melt type.  This alloy offers excellent high temperature oxidation resistance and has good strength in the annealed condition.  This grade also has excellent toughness at cryogenic temperatures.  N40 is used in a number of different applications such as aircraft engine parts and chemical processing.  

Please inquire today about your steel needs.

Specs USAP Produces to:
  • AMS 5656
  • ASTM A182
  • ASTM A276
  • ASTM A479
  • Aeroquip ACES 921M38
  • Deutsch DMS 1-10-05-01-01
  • Permaswage SP 005

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
  • XM-11
  • UNS S21900
  • 21-6-9
  • Aerospace
  • Oil & Gas
  • Other Industrial Markets
Melt Types
  • AOD
Grade Families
  • Austenitic
  • Stainless Steel

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