ERNi-1 and ERNiCr-3 are both nickel-based filler metals classified under AWS A5.14, but they are designed for different welding applications.
Choosing between them depends mainly on the base metal, joint configuration and required weld-metal composition.
What Is ERNi-1?
ERNi-1 is a high-nickel filler metal primarily designed for welding commercially pure nickel alloys.
According to AWS classification information, ERNi-1 is intended for welding wrought and cast commercially pure nickel alloys such as UNS N02200 and N02201. It can be used with GTAW, GMAW, SAW and PAW processes.
ERNi-1 contains a controlled amount of titanium. The titanium helps control weld-metal porosity during welding.
It is therefore commonly selected for applications involving Nickel 200 and Nickel 201.
What Is ERNiCr-3?
ERNiCr-3 is a different nickel-chromium filler metal.
AWS information lists a nominal composition of approximately 72% nickel, 20% chromium, 3% manganese and 2.5% niobium plus tantalum. It is used for nickel-chromium-iron alloys and various dissimilar metal welding applications.
ERNiCr-3 is commonly associated with welding nickel-chromium-iron alloys such as Alloy 600, as well as joining certain nickel alloys to steel or stainless steel.
ERNi-1 vs ERNiCr-3
| Feature | ERNi-1 | ERNiCr-3 |
|---|---|---|
| Main alloy system | Nickel | Nickel-Chromium |
| Typical nickel level | ≥93% | About 72% nominal |
| Chromium | Very low | About 20% |
| Main application | Nickel 200/201 | Ni-Cr-Fe alloys |
| Common use | Pure nickel welding | Nickel alloy and dissimilar welding |
| Titanium | 2.0–3.5% AWS range | Lower controlled addition |
| Welding processes | GTAW, GMAW, SAW, PAW | GTAW, GMAW, SAW, PAW |
The AWS specification is the appropriate reference when confirming classification and chemical requirements. AWS currently lists A5.14/A5.14M:2026 as its current specification for nickel and nickel-alloy bare welding electrodes and rods.
Which One Should You Choose?
For commercially pure Nickel 200 or Nickel 201, ERNi-1 is generally the more directly applicable filler metal.
For nickel-chromium-iron alloys and certain dissimilar joints, ERNiCr-3 may be more appropriate.
However, filler metal selection should not be based only on the alloy name. Base-metal grade, service temperature, corrosion environment, welding process and applicable welding code should all be considered.
Why Choose Dayang for ERNi-1?
Dayang supplies ERNi-1 welding wire for industrial welding applications and provides technical information covering composition, mechanical properties, sizes and welding requirements.
For international buyers, product diameter, welding process, packaging and order requirements can be discussed with the Dayang team.
Final takeaway: ERNi-1 and ERNiCr-3 are not interchangeable filler metals. ERNi-1 is primarily associated with commercially pure nickel, while ERNiCr-3 is designed around nickel-chromium-iron and related welding applications.
