440A Stainless Steel

440A is a high carbon martensitic stainless steel that is AOD melted.  This alloy can be heat treated to extremely high hardnesses. It has slightly less carbon than 440B and 440C giving it better machinability but less hardness.  The combination of good wear resistance and high hardness makes this alloy an excellent candidate for cutting tools and knife blades.  It also is often used for dental and surgical equipment.

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Specs USAP Produces to:
  • AMS 5631
  • AMS-QQ-S763
  • ASTM A276
  • ASTM F899
  • Federal QQ-S-763

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.

Approvals
  • GE S-400, S-1000

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

Industry / Trade Names
  • UNS S44002
Markets
  • Aerospace
  • Other Industrial Markets
Melt Types
  • AOD
Grade Families
  • Martensitic
  • Stainless Steel

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