Inconel 690 Welding Wire · Stress Corrosion Resistance · Nuclear Applications
ERNiCrFe-7A is a nickel-chromium-iron alloy welding wire classified under AWS A5.14, designed for welding Alloy 690 (UNS N06690) and other compatible nickel-based alloys.
With high chromium content, ERNiCrFe-7A provides excellent resistance to corrosion, oxidation, and stress corrosion cracking in demanding service environments. It is widely used for nuclear power equipment, steam generator components, dissimilar metal welding, and corrosion-resistant weld overlays.
Ronsco supplies ERNiCrFe-7A welding wire for TIG (GTAW) and MIG (GMAW) applications, with stable chemical composition, clean wire surface, and consistent welding performance.
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ERNiCrFe-7A
ERNiCrFe-7A
ERNiCrFe-7A
| Standard | Classification |
|---|---|
| AWS A5.14/A5.14M | ERNiCrFe-7A |
| ASME SFA-5.14 | ERNiCrFe-7A |
| Element | Ni | Cr | Fe | Nb+Ta | C | Mn | Si | Other Elements |
|---|---|---|---|---|---|---|---|---|
| AWS A5.14 (%) | Remainder | 28.0–31.5 | 7.0–11.0 | 0.50–1.00 | ≤0.04 | ≤1.00 | ≤0.50 | According to AWS requirements |
| Property | Typical Value |
|---|---|
| Tensile Strength | ≥590 MPa |
| Yield Strength (0.2% offset) | Not specified |
| Elongation (4d) | ≥30% |
Ø High chromium Ni-Cr-Fe alloy filler metal
Ø Designed for Alloy 690 / Inconel 690 welding applications
Ø Excellent corrosion and oxidation resistance
Ø Good resistance to stress corrosion cracking
Ø Suitable for dissimilar metal welding
Ø Compatible with TIG (GTAW) and MIG (GMAW) welding processes
Ø Suitable for high-temperature and corrosive service environments
| Category | Details |
| Compatible Materials | Alloy 690 (UNS N06690), nickel alloys, stainless steels, selected low-alloy steels |
| Welding Process | TIG (GTAW), MIG (GMAW) |
| Industrial Applications | Nuclear power equipment, steam generators, chemical processing equipment, petrochemical components |
| Welding Applications | Joining, repair welding, dissimilar welding, corrosion-resistant overlay |
| Service Environment | High temperature, thermal cycling, corrosive environments |
| Available Form | Spool wire, TIG cut lengths |
Diameter options:
Packaging:
Ø Manufacturing experience in nickel alloy welding consumables
Ø Controlled alloy chemistry according to AWS requirements
Ø Stable wire surface quality and welding performance
Ø Available for industrial and engineering projects
Ø Technical support for filler metal selection
1. What base materials is ERNiCrFe-7A welding wire suitable for?
ERNiCrFe-7A is mainly used for Alloy 690 (UNS N06690) and compatible nickel-based alloys. It can also be considered for selected dissimilar joints involving stainless steels and low-alloy steels.
2. Why is ERNiCrFe-7A used for Alloy 690 welding?
ERNiCrFe-7A contains a high chromium content, providing good resistance to corrosion, oxidation, and stress corrosion cracking. It is commonly selected for Alloy 690 components exposed to demanding service environments.
3. What welding processes are suitable for ERNiCrFe-7A?
ERNiCrFe-7A is suitable for GTAW (TIG) and GMAW (MIG) welding. The appropriate process depends on joint design, production requirements, and qualified welding procedures.
4. Can ERNiCrFe-7A be used for dissimilar metal welding?
Yes. ERNiCrFe-7A is commonly used for selected dissimilar joints between nickel alloys and stainless steels or low-alloy steels where compatible weld metal chemistry is required.
5. Does ERNiCrFe-7A require post-weld heat treatment?
ERNiCrFe-7A is not a precipitation-hardening filler metal like Inconel 718 welding wire. Heat treatment requirements depend on the base material, component requirements, applicable codes, and qualified welding procedure.
6. What sizes of ERNiCrFe-7A welding wire are available?
Ronsco supplies ERNiCrFe-7A welding wire in various diameters for TIG and MIG applications, including spool wire and TIG cut lengths according to customer requirements.
Send us your required diameter, quantity, base material, and application. Ronsco provides AWS A5.14 ERNiCrFe-7A welding wire with technical documentation and quotation support.
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