Product Description

718 Nickel Alloy is a precipitation hardenable corrosion and heat-resistant nickel alloy available in bars, forgings, sheets and plates. AMS 5662 and AMS 5663 limit sizes 10” and less between parallel sides with maximum cross-section area of 78 in2 for bars and finished forgings. It is a multiple melted alloy including VIM and/or VAR processes.

718 Nickel Alloy has high strength and creep rupture properties up from cryogenic temperatures to 1300° F, along with corrosion resistance and weldability with resistance to cracking. 718 Nickel Alloy has good resistance to oxidation and corrosion at temperatures and atmospheres in jet engine and gas turbine operations. It is also corrosion resistant to acids, sea water and sour oil and/or gas.

  • Excellent relaxation resistance

  • Can be fabricated into even the most complex parts
  • Offers a wide temperature range -423°F(-253°C) to 1300°F(705°C)
  • Outstanding tensile, fatigue, creep, and rupture strength
  • Gamma Prime strengthened
  • Excellent oxidation resistance up to 1800°F(980°C)
  • Available in annealed temper, aged, cold worked, or cold worked and aged

Because of its unique array of properties, alloy 718 is popular with a number of different critical industries and applications including:

  • Gas turbine components
  • Cryogenic storage tanks
  • Jet engines
  • Liquid-fueled rocket motors and components
  • Fasteners and instrumentation parts
  • Nuclear fuel element spacers
  • Hot extrusion tooling
  • Downhole shafting and strength bolting

Nickel Alloy 718 and Inconel 7l8 consist of over 50% nickel and of a number of different elements:

  • Ni 52.5%
  • Fe 18.5%
  • Cr 19%
  • Cb+Ta 5.13%
  • Mo 3.05%
  • Ti 0.9%
  • Al .5%
  • Co 1% max

Chemical Composition of Nickel Alloy 718

  • Al
    • .5 max

  • Cb+Ta
    • 5.13

  • Co
    • 1 max

  • Fe
    • 18.5 max

  • Mo
    • 3.05 max

  • Ni
    • 52.5 max

  • Ti
    • .9 max

Nickel Alloy 718 Standards

  • Rod, Bar, Wire and Forging Stock
    • ASTM B 637
      ASME SB 637
      SAE AMS 5662
      SAE AMS 5663
      SAE AMS 5664
      SAE AMS 5832
      SAE AMS 5914
      SAE AMS 5962
      ASME Code Case 1993
      ASME Code Case 2206
      ASME Code Case 2222
      AECMA PrEN 2404
      AECMA PrEN 2405
      AECMA PrEN 2952
      AECMA PrEN 2961
      AECMA PrEN 3219
      AECMA PrEN 3666
      ISO 9723
      ISO 9724
      ISO 9725
      DIN 17752-17754

  • Plate, Sheet and Strip
    • ASTM B 670
      ASTM B 906
      ASME SB 670
      ASME SB 906
      SAE AMS 5596
      SAE AMS 5597
      SAE AMS 5950
      AECMA PrEN 2407
      AECMA PrEN 2408
      ISO 6208
      DIN 1775

  • Pipe & Tube
    • SAE AMS 5589
      SAE AMS 5590
      ASME Code Case N-253
      DIN 17751


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