AK-E81T1-K2 Flux-Cored Wire for High-Strength Steel Welding.
A CO2 gas shielded flux-cored wire with titanium slag system designed for all-position welding of 550 MPa high-strength steel structures with stable arc, low spatter, and excellent slag removal.
Product Overview
AK-E81T1-K2 is a CO2 gas shielded flux-cored welding wire based on a titanium slag system, formulated for manual and semi-automatic welding of high-strength steel structures. The wire delivers stable arc performance, minimal spatter, and easy slag removal, resulting in a smooth, aesthetically pleasing weld bead across all positions.
It meets the EN ISO 17632- A:T 46 6 2Ni P M1 1, AWS A5.20 E81T1-C1A4-K2, and GB/T 17493 E551T1-K2 classifications. The chemical composition includes 0.15% carbon, 0.5–1.75% manganese, 0.80% silicon, 1.0–2.0% nickel, and maximum 0.03% phosphorus and sulfur, supporting good plasticity and low-temperature toughness in the deposited metal.
Application: It is suitable for the welding of 550MPa high-strength steel structures, and is mostly used for the welding of steel structures such as ships, machinery man ufacturing, containers, petrochemicals, bridges, and offshore platforms.
Key Benefits
Stable Arc and Low Spatter.
The titanium slag system ensures a stable arc during welding, reducing spatter and improving process consistency, especially at higher deposition rates.
Easy Slag Removal
Slag forms a thin, easily detachable layer that lifts off without requiring extensive chipping, reducing inter-pass cleaning time.
All-Position Welding Performance
The wire performs well in flat, horizontal, vertical, and overhead positions, allowing one consumable to cover multiple joint orientations.
Good Plasticity and Toughness.
The weld metal exhibits high plasticity and impact resistance at low temperatures, suitable for demanding structural applications.
Where It Is Used
- Welding of 550 MPa high-strength steel structures.
- Shipbuilding and offshore platform fabrication.
- Petrochemical and container manufacturing.
- Bridge and heavy machinery construction.
Who It Is For
- Steel structure fabricators working with high-strength steels.
- Shipyards and offshore contractors requiring reliable flux-cored wire for structural joints.
- Petrochemical and machinery manufacturers needing consistent weld performance in demanding environments.
Problems It Solves
- Achieving consistent weld quality on 550 MPa high-strength steel with good toughness and ductility without overmatching base metal properties.
- Reducing spatter and slag removal effort during high-production welding of structural components.
- Using a single flux-cored wire across all welding positions without retooling or changing consumables.
Specifications
Published by the factory for AK-E81T1-K2. 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-C1A4-K2 |
| Classification 3 | GB/T 17493 E551T1-K2C |
| Element | Content |
|---|---|
| C | 0.15 |
| Mn | 0.5-1.75 |
| P | 0.03 |
| S | 0.03 |
| Si | 0.80 |
| Ni | 1.0-2.0 |
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
- CO2 gas shielded flux-cored wire with titanium slag system.
- Chemical composition: C 0.15%, Mn 0.5–1.75%, Si 0.80%, Ni 1.0–2.0%, P ≤ 0.03%, S ≤ 0.03%
- Meets EN ISO 17632- A:T 46 6 2Ni P M1 1, AWS A5.20 E81T1-C1A4-K2, and GB/T 17493 E551T1-K2 classifications.
- Available in 1.0 mm, 1.2 mm, and 1.6 mm diameters with specified voltage and current ranges.
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 thick sections.
- Set voltage and current within the recommended ranges: 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.
- Ensure the joint surface is clean of oil, rust, paint, and moisture before welding to avoid porosity and inclusions.
- Use appropriate shielding gas (CO2 or CO2 mix) at the recommended flow rate to maintain arc stability and weld quality.
How It Compares
Basic flux-cored wires offer higher toughness but require stricter storage and handling. AK-E81T1-K2 provides a balanced performance for structural applications without the need for preheating in most cases.
Related Articles
Technical background on this grade from the AKWELD knowledge centre.
Related Grades
Other welding wire in the same family.
AK-E81T1-K2 Questions
What are the recommended welding parameters for each diameter?
Which standards does AK-E81T1-K2 meet?
What is the chemical composition of the deposited metal?
Can I get technical data and packaging details before ordering?
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Can we test AK-E81T1-K2 before placing a production order?
Request a Quotation for AK-E81T1-K2
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