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Inconel 718

General Description
  A nickel-chromium-molybdenum alloy, Inconel 718 has high yield, tensile and creep-rupture properties at temperatures up to 1300°F (704°C). Besides this alloy has an excellent oxidation resistance up to 1800 degrees F (980 degrees C), also stable chemical properties at low temperatures.
Inconel 718 can be used in chemical processing, aerospace, motor components, pollution-control equipments, nuclear reactors, cryogenic storage tanks, valves, fasteners and so on.

Chemical Composition

Grade Ni% Cr% Mo% Nb% Fe% Al% Ti% C% Mn% Si% Cu% S% P% Co%
Alloy 718 50-55 17-21 2.8-3.3 4.75-5.5 Bal. 0.2-0.8 0.7-0.15 Max 0.08 Max 0.35 Max 0.35 Max 0.3 Max 0.01 Max 0.015 Max 1.0


Grade UNS Werkstoff Nr.
Alloy 718 N07718 2.4668

Physical Properties

Grade Density Melting Point
Alloy 718 8.2g/cm3 1260°C-1340 °C

Mechanical Properties

Alloy 718 Tensile Strength Yield Strength Elongation Brinell Hardness (HB)
Solution Treatment 965 N/mm² 550 N/mm² 30% ≤363

Welding of Inconel 718
Any traditional welding procedures can be used to weld Inconel 718 to similar alloys or other metals, such as Gas Tungsten Arc Welding(GTAW) and Gas Metal Arc Welding(GMAW). Before welding, remove scale, grease, mark and imprint. And no heat treatment needed before and after welding.
Recommend filler wire regarding welding Inconel 718: ERNiCrFe-2

Gas Tungsten Arc
Welding (GTAW)

Gas Metal Arc

Nicrofer S 5219

W.-Nr. 2.4667


AWS A 5.14 ERNiFeCr-2

Size Range
Inconel 718 Wire: ¢0.1mm-¢9mm
Inconel 718 Bar: ¢11mm-¢200mm
Inconel 718 Strip: 75-110mm*0.15-22mm
Seamless and welded tubes also available per request