D6AC Low Alloy Steel

D6AC is a medium carbon low alloy steel that is melted as AOD + VAR which improved hardenability as compared to 4340 low alloy steel.  This alloy has very high strength and offers excellent notch toughness.  D6AC has excellent deep hardening characteristics which lend itself well to larger components.  This grade is also widely used in the aerospace industry as landing gear, shafts, and axles requiring a good combination of toughness and strength.

Please inquire today about your steel needs.

Specs USAP Produces to:
  • AMS 6431
  • AMS-S-8949
  • General Dynamics FMS-1011
  • Grumman GM-1013
  • Lockheed LCM 05-2190
  • Lockheed STM 05-500
  • MIL-S-8949

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.


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Industry / Trade Names
  • UNS K24728
  • Aerospace
Melt Types
Grade Families
  • Low Alloy Steels

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