N19909 Nickel Iron Cobalt Superalloy

The following data is provided for informational purposes only. It was provided with permission by Special Metals at www.specialmetals.com 

Incoloy®  909, also known as UNS N09909, is used known for having high strength, a constant low coefficient of thermal expansion, and a constant modulus of elasticity. Because of these characteristics, there is a always a need for parts forged in Incoloy®  909 in many industrial sectors.

Chemical Composition
(%max., unless shown as range or min.)

Ni Co Nb Ti Si Al C Fe
Min./Max. 35.0-40.0 12.0-16.0 4.3-5.2 1.3-1.8 0.25-0.50 0.15 0.06 *Balance

*Reference to the ‘balance’ of a composition does not guarantee this is exclusively of the element mentioned but that it predominates and others are present only in minimal quantities.

Applicable Specifications 

Product Specification
Billets SAE AMS 5884
Bars and Forgings SAE AMS 5892
Pipe and Tube SAE AMS 5589, SAE AMS 5590, ASME Case Code N-253, DIN 17751

Sheet and Strip

 SAE AMS 5893

Common Fabrication Processes
Incoloy® 909  is a highly durable be forged into nearly any shape. This includes:

  • Gas Turbine Vanes
  • Casting
  • Shafts
  • Shrouds
  • Rings and Castings

Industries that Commonly use Incoloy® 909 Forgings:

  • Aerospace and Aviation Engineering
  • Power Generation