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    • GEN 718

    GEN 718 Overview

    GEN 718 is used for TIG welding alloys 718, 706, and X-750. It is mainly used for welding high-strength aircraft components, and liquid rocket components involving cryogenic temperatures. This alloy can be age hardened to higher strengths.

    Download GEN 718 Data Sheet

    Welding Wire Reels

    AWS Chemical Composition (Typical)

    %C %Cr %Ni %Mo %Ti %Fe %Mn %B
    0.08 max.
    0.045    		 17.0 – 21.0
    18.5    		 50.0 – 55.0
    53.8    		 2.80 – 3.30
    2.90    		 0.65 – 1.15
    0.95    		 Rem.
    17.7    		 0.35 max.
    0.05    		 0.006 max.
    0.003
    %Si %P %S %Cu %Al %Nb+Ta Total
    Others
    0.35 max.
    0.06    		 0.015 max.
    0.007    		 0.015 max.
    0.001    		 0.30 max.
    0.10    		 0.20 – 0.80
    0.55    		 4.75 – 5.50
    5.18    		 0.50 max

    Typical Weld Metal Mechanical Properties

    Tensile Strength 125,000 psi 862 MPa
    Yield Strength 85,000 psi 586 MPa
    Elongation 28%

    Typical Welding Parameters

    Process Diameter Voltage Amperage Gas/Flux
    TIG (GTAW) 1/16” (1.6 mm) 14 – 18 90 – 130 100% Ar
    3/32” (2.4 mm) 15 – 20 120 – 180 100% Ar
    1/8” (3.2 mm) 15 – 20 150 – 220 100% Ar
    MIG (GMAW) .035” (0.9 mm) 26 – 30 150 – 200 75% Ar – 25% He
    .045” (1.1 mm) 28 – 32 180 – 230 75% Ar – 25% He
    Sub Arc (SAW) .093” (2.4 mm) 28 – 30 275 – 350
    .125” (3.2 mm) 29 – 32 350 – 450

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