ERNi-1 pure nickel welding wire is a specialized welding material used for surfacing steel and welding dissimilar materials such as steel and nickel. It is primarily used for welding 200 and 201 nickel alloys, nickel-plated steel plates, and joining steel to nickel.
- Standard Specifications:
| Alloy name | Product forms | AWS | |
| ERN-1 | MIG/TIG/SAW welding wire or rod | A5.14 | ERN-1 |
This welding wire is used for tungsten inert gas welding, gas metal arc welding, and submerged arc welding of pure nickel. It is also used for surfacing of steel. The reaction between titanium and carbon keeps the free carbon content low, allowing the filler metal to be used for welding pure nickel. The weld metal exhibits good corrosion resistance, especially in alkaline media.
- Chemical Composition:acc.AWS 5.14
| Alloy name | Ni%(min) | Cu% | Ti% | P% | Mn% | Fe% | C%(max) | Si%(max) | Al% (max) |
S% | |
| AWS | ERNi-1 | 93 | 0.25 | 2.0 | 0.03 | 1.0 | 1.0 | 0.15 | 0.75 | 1.5 | 0.015 |
- Mechanical properties:
Tensile strength: min 380-460 MPa (55-65 psi)
Yield strength: 255 MPa (37 psi)
Elongation: 28%
- Main Features and Applications:
1.Corrosion Resistance: Excellent performance in high-temperature and corrosive environments (especially alkaline environments).
2.Main Applications:
Welding of pure nickel base materials (such as Nickel 200/201).
Welding of dissimilar materials between steel and nickel.
Surface cladding of steel.
Repair of cast iron castings, resulting in welds with good ductility.
3.Applicable Processes: Suitable for various welding processes such as GTAW (TIG), GMAW (MIG/MAG), and SAW (Submerged Arc Welding).
FAQ
Q: Which welding processes are suitable?
A: It is suitable for various welding processes such as GTAW (TIG welding), GMAW (MIG/MAG welding), and SAW (submerged arc welding). The welding wire is available in different forms, including straight rods (for TIG) and spools (for MIG).
Q: What are the typical applications in which industries?
A: It is widely used in chemical industries (such as alkali production equipment, evaporators, and heat exchangers), nuclear power, offshore engineering, and machinery manufacturing.
Q: What precautions should be taken during storage and use?
A: The welding wire should be stored in a dry environment to prevent moisture absorption.
Before welding, the surface of the base metal should be cleaned of oil, rust, and oxides.
For dissimilar steel welding, it is usually necessary to select appropriate welding process parameters and a possible transition layer.
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