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ERNiFeCr-2

Class: ERNiFeCr-2

AWS: A5.14

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

Weld Process: GMAW & ASAW Welding Processes

AWS Chemical Composition Requirements
C = 0.08 max Cu = 0.30 max
Mn = 0.35 max Ni = 50.0 – 55.0
Fe = Remainder Al = 0.20 – 0.80
P = 0.015 max Ti = 0.65 – 1.15
S= 0.015 max Cr = 17.0 – 21.0
Si = 0.35 max Nb + Ta = 4.75 – 5.50
Mo = 2.80 – 3.30 Other = 0.50 max

 

Available Sizes 
Diameter X Spool Sizes Diameter X Coil Sizes
.035 x 33# 1/16 x COIL
.045 x 33# 3/32 x COIL
1/16 x 33# 1/8 x COIL
5/32 x COIL

Application
ERNiFeCr-2 (NA718) filler metal is used by gas tungsten arc welding process for Cr-Ni-Nb-Mo alloys. Use of high heat impart process such as mig often results in micro-fissuring.

Deposited Chemical Composition % (Typical)
C = 0.04 Si = 0.12 Ni = 52.5
Mn = 0.25 Cr = 19.0 Nb/Ta = 5.0
Fe = Balance Mo = 3.0 S = 0.009

Deposited Charpy-V-Notch Impact Properties %
Not applicable

Recommended Welding Parameters for MIG and SAW Welding of Nickel Alloys
Process Diameter of Wire Voltage (V) Amperage (A) Gas
MIG .035 inches 26 – 29 150 – 190 75 % Argon +25% Helium
.045 inches 28 – 32 180 – 220 75 % Argon +25% Helium
1/16 inches 29 – 33 200 – 250 75 % Argon +25% Helium
SAW 3/32 inches 28 – 30 270 – 350 Suitable Flux May Be Used.
1/8 inches 29 – 32 350 – 450 Suitable Flux May Be Used.
5/32 inches 30 – 33 400 – 550 Suitable Flux May Be Used.

Note: Other shielding Gases may be used for Mig 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.