ERNiCu-7

Class: ERNiCu-7
AWS: A5.14

Conforms to Certification: AWS A5.14 | ASME SFA A5.14

Weld Process: GTAW Welding Process

AWS Chemical Composition Requirements
C = 0.15 max Cu = Remainder
Mn = 4.0 max Ni = 62.0 – 69.0
Fe = 2.5 max Al = 1.25 max
P = 0.02 max Ti = 1.5 – 3.0
S = 0.015 max Other = 0.50 max
Si = 1.25 max

Available Sizes
.035 x 36
.045 x 36
1/16 x 36
3/32 x 36
1/8 x 36

Application
ERNiCu-7 (NA60) is a copper-nickel alloy base wire for GMAW and GTAW welding of Monel alloys 400 and 404. Also used for overlaying steel after first applying Layer of 610 nickel.

Deposited Chemical Composition % (Typical)
C = 0.05 P = 0.008 Ni = 65.9
Mn = 3.45 S = 0.002 Ti = 2.25
Fe = 0.40 Si = 0.77 Al = 0.10
Cu = Balance
Deposited All Weld Metal Properties % (AW) 
Tensile Strength 76,000 psi
Yield Strength 51,000 psi
Elongation 34%

Deposited Charpy-V-Notch Impact Properties %
Not applicable

Recommended Welding Parameters for TIG, MIG, and SAW Welding of Nickel Alloys

Process Diameter of Wire Voltage (V) Amperage (A) Gas
Tig .035 inches x 36 12 – 15 60 – 90 100% Argon
.045 inches x 36 13 – 16 80 – 110 100% Argon
1/16 inches x 36 14 – 18 90 – 130 100% Argon
3/32 inches x 36 15 – 20 120 – 175 100% Argon
1/8 inches x 36 15 – 20 150 – 220 100% Argon

Note:  Other shielding Gases may be used for Tig welding. Shielding gases are chosen taking Quality, cost, and Operability into consideration.

Note:  Both agglomerated and fused fluxes can be used for submerged arc welding.

Note: The chemical composition of the flux mainly affects the chemistry of the weld metal and consequently its corrosion resistance and mechanical properties.