UNS #N09706

706 is a precipitation-hardenable nickel-base alloy with high strength from cryogenic temperatures to about 1200°F (650°C). The alloy has similar characteristics to those of 718 but has improved fabricability and can be processed into larger ingots and forgings than other superalloys with excellent resistance to strain-age cracking of weldments. 706 is used for a variety of applications that require high elevated-temperature strength in larger section sizes along with good fabricability or where pitting and stress corrosion cracking are concerns.

Type Analysis

  • Carbon (Maximum) 0.06
  • Phosphorus (Maximum) 0.02
  • Silicon (Maximum) 0.35
  • Nickel (Nominal) 39.00 - 44.00
  • Titanium (Nominal) 1.50 - 2.00
  • Manganese (Maximum) 0.35
  • Sulfur (Maximum) 0.015
  • Chromium (Nominal) 14.50 - 17.50
  • Iron (Nominal) Balance
  • Aluminum (Nominal) 0.4
  • Copper (Nominal) 0.3
  • Columbium + Tantalum2.50 - 3.30
  • Boron (Nominal) 0.006


turbine discs in large industrial gas turbines as well as aerospace turbines. Other turbine engine parts include shafts, cases, mounts, and fasteners: Non-magnetic oil drilling components, such as drill collars, stabilizers, and measuring/logging-while-drilling (MWD/LWD) housings

Applicable Specifications

  • AMS 5701
  • AMS 5702
  • AMS 5703







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