AK-E81T1-Ni2M Flux-Cored Wire for Low-Temperature Toughness in High-Strength Steel Welding.
A gas shielded flux-cored welding wire designed for high-strength low alloy steels requiring excellent CVN toughness at low temperatures, with stable arc and minimal spatter across all positions.
Product Overview
AK-E81T1-Ni2M is a flux-cored wire for gas shielded arc welding of high-strength low alloy steels, specifically formulated to deliver good Charpy V-notch (CVN) toughness at low temperatures. It is suitable for both single-pass and multi-pass welding in all positions.
The wire is designed for applications involving 550 MPa grade high-strength structural steel, including pressure vessels, machinery manufacturing, petrochemical equipment, and structural bridges. It meets the AWS A5.20 E81T1-Ni2, EN ISO 17632-A:T 46 6 2Ni P M1 1, and GB/T 17493 E551T1-Ni2M classifications.
Key operational features include stable arc performance, easy slag removal, reduced smoke, and low spatter, which contribute to efficient welding and cleaner weld surfaces.
Application: Welding for 550MPa grade high strength structural steel, like vessels, machine manu facturing, petrochemical industries and structural bridges etc.
Key Benefits
Excellent Low-Temperature Toughness
The wire delivers high CVN toughness at low temperatures, making it suitable for service environments where impact resistance is critical, such as in cold climate applications or pressure-containing components.
Stable Arc and Low Spatter.
The flux-cored formulation provides a stable arc and minimal spatter during welding, reducing the need for post-weld cleaning and improving weld quality consistency.
Easy Slag Removal
Slag forms a thin, easily detachable layer that lifts off after welding, reducing inter-pass cleaning time and minimizing the risk of slag entrapment.
All-Position Welding Capability
The wire performs reliably in flat, horizontal, vertical, and overhead positions, allowing for continuous welding without changing consumables.
Where It Is Used
- Welding of 550 MPa grade high-strength structural steel in pressure vessels.
- Fabrication of machinery and heavy equipment requiring high toughness.
- Construction and repair in petrochemical and offshore industries.
- Structural bridge components exposed to low-temperature service.
Who It Is For
- Welding consumable distributors supplying flux-cored wires for industrial and structural applications.
- Fabricators working with high-strength steels in demanding environments.
- Contractors in petrochemical and offshore sectors requiring low-temperature-tough welds.
Problems It Solves
- Achieving required CVN toughness at low temperatures in high-strength steel welds without compromising weldability.
- Managing slag removal and spatter in flux-cored welding processes, which can slow down production.
- Maintaining consistent arc stability and weld quality across all welding positions with a single wire type.
Specifications
Published by the factory for AK-E81T1-Ni2M. Values not shown are not published on the datasheet and are marked as such rather than estimated.
| Standard | Designation |
|---|---|
| Classification 1 | EN ISO 17632- A:T 46 6 2Ni P M1 1 |
| Classification 2 | AWS A5.20 E81T1-Ni2 |
| Classification 3 | GB/T 17493 E551T1-Ni2M |
| Element | Content |
|---|---|
| C | 0.12 |
| Mn | 1.50 |
| P | 0.03 |
| S | 0.03 |
| Si | 0.80 |
| Ni | 1.75-2.75 |
Mechanical property data for this grade is not published on the factory datasheet. Ask our technical team for the test record before you qualify it.
| Diameter | Current range |
|---|---|
| 1.0mm | :15-20V / 100-250A |
| 1.2mm | :22-32V / 180-300A |
| 1.6mm | :25-38V / 280-400A |
Technical Features
- Flux-cored wire for gas shielded arc welding of high-strength low alloy steels.
- Chemical composition includes 1.75-2.75% Ni, 0.12% C, 1.50% Mn, 0.80% Si, 0.03% P, and 0.03% S.
- Meets AWS A5.20 E81T1-Ni2, EN ISO 17632-A:T 46 6 2Ni P M1 1, and GB/T 17493 E551T1-Ni2M classifications.
- Recommended welding parameters: 1.0 mm – 15-20 V / 100-250 A; 1.2 mm – 22-32 V / 180-300 A; 1.6 mm – 25-38 V / 280-400 A.
Use Guide
- Select wire diameter based on joint thickness and welding position: 1.0 mm for thin sections, 1.2 mm for medium, 1.6 mm for thicker materials.
- Set voltage and current within the recommended ranges for each diameter to ensure stable arc and proper penetration.
- Ensure the joint is clean and free of oil, rust, moisture, and paint before welding to avoid porosity and defects.
- Use a shielding gas as specified in the welding procedure, and maintain consistent travel speed and gun angle for uniform bead appearance.
How It Compares
It offers better impact properties than E81T1-Ni1 due to higher nickel content. Compared to solid wires, it provides better slag control and higher deposition rates, but requires more careful gas shielding and storage to prevent moisture absorption.
Related Articles
Technical background on this grade from the AKWELD knowledge centre.
Related Grades
Other welding wire in the same family.
AK-E81T1-Ni2M Questions
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Request a Quotation for AK-E81T1-Ni2M
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