AK-ENi2 Copper Plated Solid Wire for Submerged Arc Welding of Nickel-Containing Steels.
A copper plated solid wire designed for submerged arc welding of steels with similar composition, particularly in pressure vessels, petrochemical and marine applications.
Product Overview
AK-ENi2 is a copper plated solid wire used for submerged arc welding of steels with similar composition. It is suitable for single and multi-layer welding in demanding industrial environments.
The wire is formulated with a nickel content of 2.00-2.90 percent, which enhances toughness and corrosion resistance in service conditions. It meets EN ISO 14171-A S 46 6 FB T2Ni2, AWS A5.23 F8A8-ENi2-Ni2, and GB/T 5293 55A 6FB-SUN5 standards.
Chemical composition includes carbon ≤0.12 percent, silicon 0.05-0.30 percent, manganese 0.75-1.25 percent, sulfur ≤0.020 percent, phosphorus ≤0.020 percent, and nickel 2.00-2.90 percent.
Application: Copper plated solid wire for submerged arc welding. These are suit able for welding of steels of similar composition.
Key Benefits
High Toughness at Low Temperature.
The deposited metal achieves impact values of at least 27 J at minus 60 degrees C, making it suitable for low-temperature service in petrochemical and marine applications.
Good Mechanical Strength
Tensile strength ranges from 550 to 700 MPa, with yield stress at least 470 MPa and elongation at least 22 percent, ensuring reliable performance under mechanical load.
Controlled Chemistry for Consistent Weld Metal.
Precise control of carbon, sulfur, and phosphorus levels ensures low hydrogen content and reduced risk of cracking in the weld zone.
Suitable for Multi-Layer Welding.
The wire performs consistently across multiple passes, maintaining mechanical properties and minimizing the risk of defects in thick-section joints.
Where It Is Used
- Pressure vessel fabrication
- Petrochemical and oil refining equipment.
- Marine structures and offshore components.
- Railway rolling stock and heavy machinery.
- Welding of steels with similar composition using submerged arc welding.
Who It Is For
- Welding consumable distributors supplying solid wires for industrial fabrication.
- Pressure vessel and petrochemical plant fabricators requiring certified filler metal.
- Marine and railway contractors working with steels requiring toughness at low temperature.
- Submerged arc welding teams needing consistent wire performance across multiple layers.
Problems It Solves
- Matching filler metal chemistry to base metals with nickel content to meet code requirements for toughness and strength.
- Ensuring consistent weld metal properties across multiple layers in thick-section joints.
- Avoiding excessive hydrogen pickup through controlled carbon and impurity levels in the wire.
- Sourcing a single wire type that meets multiple international standards for industrial projects.
Specifications
Published by the factory for AK-ENi2. Values not shown are not published on the datasheet and are marked as such rather than estimated.
| Standard | Designation |
|---|---|
| Classification 1 | EN ISO 14171-A S 46 6 FB T2Ni2 |
| Classification 2 | AWS A5.23 F8A8-ENi2-Ni2 |
| Classification 3 | GB/T 5293 55A 6FB-SUN5 |
| Element | Content |
|---|---|
| C | ≤0.12 |
| Si | 0.05-0.30 |
| Mn | 0.75-1.25 |
| S | ≤0.020 |
| P | ≤0.020 |
| Ni | 2.00-2.90 |
| Property | Value |
|---|---|
| Tensile strength (MPa) | 550-700 |
| Yield Stress (MPa) | ≥470 |
| Elongation (%) | ≥22 |
| Impact values (J) | ≥27J/-60℃ |
Technical Features
- Copper plated solid wire for submerged arc welding.
- Chemical composition: C ≤0.12%, Si 0.05-0.30%, Mn 0.75-1.25%, S ≤0.020%, P ≤0.020%, Ni 2.00-2.90%
- Deposited metal tensile strength: 550-700 MPa.
- Yield stress: at least 470 MPa.
- Elongation: at least 22 percent.
- Impact toughness: at least 27 J at minus 60 degrees C.
- Supplied to EN ISO 14171-A S 46 6 FB T2Ni2, AWS A5.23 F8A8-ENi2-Ni2, and GB/T 5293 55A 6FB-SUN5 standards.
Use Guide
- Select wire diameter based on joint thickness and welding position. Use standard submerged arc welding parameters for the selected thickness.
- Ensure the wire is stored in a dry environment to prevent moisture absorption, which can lead to porosity.
- Clean the joint surfaces from oil, rust, paint, and moisture before welding to avoid contamination.
- Use flux that is compatible with AK-ENi2 and matches the welding parameters specified in the procedure specification.
How It Compares
AK-ENi2 is a solid wire with nickel content suitable for welding steels of similar composition. It differs from non-nickel wires in its enhanced toughness at low temperature and improved resistance to corrosion. Compared to flux-cored wires, it provides a cleaner weld pool and lower spatter, but requires a separate flux layer. It is not intended for use on base metals with significantly different chemistry.
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Technical background on this grade from the AKWELD knowledge centre.
Related Grades
Other welding wire in the same family.
AK-ENi2 Questions
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