ERNiFeCr-2
- Strength, AWS 5.14 ERNiFeCR-2 filler metal can be used. Solution annealing of the alloy should be performed prior to aging to dissolve phases in the microstructure that may have formed during previous processing. If the material is hot finished, then the anneal temperature should be 1800°F. If the material is cold worked, then.
- AWS 5.14 AWS ERNiFeCr-2 ASME SFA 5.14 UNS N07718 TYPICAL MECHANICAL PROPERTIES Tensile strength: 125,000 psi 860 MPa Yield strength: 91,000 psi 630 MPa Elongation: 27% AWS Chemical Composition Ni C Mn Fe S Si Cu 50.0-55.0 0.08 max 0.35 max Bal 0.015 max 0.35 max 0.30 max.
*Specification
ERNiFeCr-1. Specification AWS/ASME Spec 5.14 AWS Class ERNiFeCr-1 UNS N08065. Chemical Composition,%. Typical Welding Parameter & Mechanical Property. Feature Used for welding of nickel-chromium-molybdenum-copper alloys. Also can be used to overlay cladding where similar chemical composition is required. Application Application Used for welding of nickel-chromium-molybdenum.
AWS/ASME Spec 5.14
AWS Class ERNiFeCr-2
UNS N07718
*Chemical Composition,%
C | Mn | Si | Cr | S | P | Ni | Fe | Cu | Al | Mo | Ti | Nb+Ta |
≤0.08 | ≤0.35 | ≤0.35 | 17-21 | ≤0.015 | ≤0.015 | 50-55 | Rest | ≤0.3 | 0.2-0.8 | 2.8-3.3 | 0.65-1.15 | 4.75-5.5 |
*Typical Welding Parameter & Mechanical Property
Ernifecr-2
Diameter | Process | Volt | Amps | Shielding Gas | |
In | mm | ||||
0.035 | 0.9 | GMAW | 26-29 | 150-190 | Spray Transfer 100% Argon |
0.045 | 1.2 | GMAW | 28-32 | 180-220 | |
1/16 | 1.6 | GMAW | 29-33 | 200-250 | |
1/16 | 1.6 | GTAW | 14-18 | 90-130 | 100% Argon |
3/32 | 2.4 | GTAW | 15-20 | 120-175 | 100% Argon |
1/8 | 3.2 | GTAW | 15-20 | 150-220 | 100% Argon |
Tensile Strength MPa(ksi) | Yield Strength MPa(ksi) | Elongation % | |
AWS requirement | 1140(165) | Not specified | Not specified |
Typical results as welded | 860(125) | 630(91) | 27 |
*Feature
Primarily for welding high strength aircraft components and liquid rocket components involving cryogenic temperatures.
High heat input processes such as MIG welding often result in micro fissuring. This alloy can be age hardened to higher strengths.
*Application
Used for welding alloys 718, 706 and X-750.
Class: ERNiFeCr-2
AWS: A5.14
Conforms to Certification: AWS A5.14 | ASME SFA A5.14
Weld Process: GTAW Welding Process
| 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
.035 x 36
.045 x 36
1/16 x 36
3/32 x 36
1/8 x 36
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 |
Ernifecr-2
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.