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 input 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 |
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| 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.