Inconel 718, Alloy 718

N07718 tubing, Alloy 718 plates, Inconel 718 round bars

Inconel 718 is precipitation hardened nickel alloy containing amounts of niobium and molybdenum. Alloy 718 exhibits excellent high yield tensile and creep-rupture properties at temperatures up to 1300ºF and oxidation resistance to 1800ºF.  The alloy can be supplied in the annealed condition to enhance machinability followed by subsequent appropriate heat treatments. LKALLOY mainly stocks and produces Inconel 718 tubing, Inconel 718 sheet, alloy 718 round bar and other forms in various size and specifications.

Inconel 718 Available Forms and Specifications

Inconel 718 Sheet / Plate / Strip: AMS 5596, AMS 5597, ASTM B670

Inconel 718 Seamless Pipe / Tube: AMS 5589, AMS 5590

Inconel 718 Round / Flat bar: ASTM B637, AMS 5662, AMS 5663, AMS 5664 

Inconel 718 Wire: AMS 5832 Welding Wire

Inconel 718 Forgings ASTM B637 Forgings

Chemical Composition


Mechanical Properties

Density, g/c㎡8.19
Melting range, ℃1260-1340
Tensile strength, min, Mpa1275
Yield strength, 0.2% offset, min, Mpa1034
Elongation, %, min12
Hardness, Rockwell331


Inconel 718 is used in applications that require high strength such as gas turbine components and cryogenic storage tanks. Jet engines, pump bodies and parts, rocket motors and thrust reversers, nuclear fuel element spacers, hot extrusion tooling. Other popular uses are high strength bolting, and downhole shafting.

LKALLOY is a leading supplier of Inconel Alloy 718 and other high-quality special metal alloys with decades of experience and extensive specifications. To buy or learn more about Alloy 718, contact us now.

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