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Alloy 718

Technical Data Sheet


Chemical Composition Limits
Weight% Ni C Mn Fe S Si Cu Cr Al Ti Cb+Ta Mo P OET
Alloy 718 50-55 0.08 max 0.35 max Bal 0.015 max 0.35 max 0.30 max 17-21 0.20-0.80 0.65-1.15 4.75-5.50 2.8-3.3 0.015 max 0.50 max

Alloy 718 is used for welding of InconelĀ® alloys 718, 706 and X-750. This filler metal is mainly used for welding high strength aircraft components and liquid rocket components involving cryogenic temperatures. The weld metal of the 718 is age hardenable and has mechanical properties comparable to those of the base metals

Typical Mechanical Properties

Material Ultimate Tensile Strength Offset Yield Strength 0.2 % Elongation (%)
psi MPa psi MPa
Alloy 718 125,000 860 91,000 630 27

Nickel Alloy 718 is available in TIG, MIG and SUB-ARC wire used for welding. For all stock availability contact Sales.

AWS 5.14
UNS N07718

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Inconel is the trademark of the Special Metals Group of Companies


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Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.