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                ERCuNi

                ERCuNi is used for GMAW and GTAW. Can also be used by oxy-fuel welding of 70/30, 80/20, and 90/10 copper nickel alloys. A barrier layer of nickel alloy 610 is recommended prior to overlaying steel with GMAW weld process. Because ERCuNi has excellent resistance to corrosion in sea water, ERCuNi is widely used for marine and desalination applications.

                Common Names: Oxford Alloy® 67  FM 67  Tech alloy 413
                Conformances: AWS A5.7, SFA-5.7, UNS C71581

                CHEMICAL COMPOSITION(%)

                Si 

                Mn 

                Ni 

                ≤0.03 

                    ≤0.25 

                   ≤1.0

                ≤0.01

                0.02

                30-32

                Al

                Ti

                Fe

                Cu

                others

                -

                ≤0.15

                   0.2-0.5

                   0.4-0.75

                Rest

                <0.5

                -

                WELDING PARAMETERS

                Process 

                Diameter

                Voltage

                Amperage

                Shielding Gas

                TIG

                .035”    (0.9mm)

                .045”    (1.2mm)                    

                1/16”    (1.6mm)                      

                3/32”    (2.4mm)                   

                1/8”     (3.2mm)

                12-15         

                13-16         

                14-18         

                15-20         

                15-20 

                60-90          

                80-110        

                90-130      

                120-175    

                150-220

                100% Argon                         

                100% Argon                         

                100% Argon                         

                100% Argon                         

                100% Argon

                MIG

                .035”     (0.9mm)

                .045”     (1.2mm)                  

                1/16”     (1.6mm) 

                26-29         

                28-32         

                29-33

                150-190    

                180-220     

                200-250

                75% Argon + 25% Helium      

                75% Argon + 25% Helium      

                75% Argon + 25% Helium

                SAW

                3/32”     (2.4mm)                    

                1/8”      (3.2mm)                   

                5/32”     (4.0mm)

                28-30         

                29-32         

                30-33

                275-350            

                350-450            

                400-550

                Suitable Flux may be used     

                Suitable Flux may be used      

                Suitable Flux may be used

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