Product Description
Inconel 718 comprises of nickel-chromium, along with niobium and molybdenum, offering heat treatment-derived high strength, exceptional corrosion resistance, formability and weldability, plus resistance to strain age cracking, up to 700ºC.

Inconel 718 (UNS N07718) Nickel Alloy Applications

  • Chemical processing
  • Aerospace
  • Liquid fuel rocket motor components
  • Pollution-control equipment
  • Nuclear reactors
  • Cryogenic storage tanks
  • Valves, fasteners, springs, mandrels, tubing hangers
  • Well head completion equipment and blow out preventers (BOP's)
  • Gas turbine engine parts

Inconel 718 Nickel Alloy Standards

  • UNS N07718
  • ASTM B637, ASTM B670
  • AMS 5596, AMS 5662, AMS 5663, AMS 5832
  • ASME Case 2222-1, SFA 5.14
  • NACE MR0175
  • EN 2.4668, Werkstoff 2.4668
  • GE B50TF14, B50TF15
  • Other common names: Alloy 718, Haynes 718, Nicrofer 5219, Allvac 718, Altemp 718

Inconel 718 Nickel Alloy Chemical Composition %

Ni50-55Cr17-21
Mo2.8-3.3Mn0.35 max
Cu0.23 maxSi0.35 max
C0.045 maxS0.01Max
P0.01 maxCo1.0 max
Cb+Ta4.87-5.2Pb1000 ppm
Se0.0005ppmB50mmpa
Mg0.0006ppmTi0.8-1.15
Al0.4-0.1FeBalance

Inconel 718 Nickel Alloy Mechanical Properties

Inconel 718MinMax
Ultimate tensile strength, ksi150-
0.2% yield strength, ksi120145
Elongation, %20%-
Reduction of area, %35%-
Impact Strength*Min average/ min single, ft-lbs40/35-
Hardness, Rockwell C3240

Inconel 718 (UNS N07718) Nickel Alloy Characteristics

  • Good mechanical properties - tensile, fatigue and creep-rupture
  • Yield tensile strength, creep, and rupture strength properties are exceedingly high
  • Highly resistant to chloride and sulfide stress corrosion cracking
  • Resistant to aqueous corrosion and chloride ion stress corrosion cracking
  • High temperature resistant
  • Age-hardenable with a unique property of slow aging response that permits heating and cooling during annealing without the danger of cracking.
  • Excellent welding characteristics, resistant to postweld age cracking
  • Available Sizes And Specifications
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