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718

AWS A5.14 Class ERNiFeCr-2

718 is a nickel-chromium-columbium-molybdenum filler metal designed
specifically for TIG welding of Inconel® alloys 718, 706 and X-750. The weld deposit of 718 offers exceptional high strength and good ductility at temperatures up to 1300°F. Good weldability and formability as well as
excellent cryogenic properties account for the many applications of this filler metal. The weld deposits of 718 will precipitation-harden on heat treatment. 

TYPICAL WELD METAL CHEMISTRY (%) 

Ni

50.0-55.0

C

0.08 max.

Mn

0.35 max.

Fe

Balance

S

0.015 max.

Si

0.35 max.

Cu

0.30 max.

Cr

17.0-21.0

Al

0.20-0.80

Ti

0.65-1.15

*Cb

4.75-5.50

Mo

2.80-3.30

P

0.015 max.

B

0.006 max.

Co

Incidental

*Includes Tantalum (Ta)

MINIMUM MECHANICAL PROPERTIES (as welded)

Tensile strength (psi)

165,000

Yield strength (0.2% offset) (psi)

135,000

Age hardened at 1325°F/8 hours,
furnace cool to 1150°F at 100°F/hour, then air cool.

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