Grade X53 Low Alloy Steel

X53 is a low alloy carburizing steel melted as VIM + VAR.  This is a premium quality grade that is double vacuum melted providing great fracture toughness and impact strength.  This grade also has excellent fatigue strength making it suitable for stringent rotorcraft applications such as gearbox components.  

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Specs USAP Produces to:
  • AMS 6308
  • Bell 299-947-334
  • Boeing HMS 6-1288
  • Pratt & Whitney PWA-S-6308
  • Rolls Royce RRMS 31022

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

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Industry / Trade Names
  • UNS K71040
Markets
  • Aerospace
Melt Types
  • VIM+VAR
Grade Families
  • Low Alloy Steels

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