AK-E91T1-Ni2 Flux-Cored Wire for High-Strength Steel Welding.
A CO2-shielded flux-cored wire with titanium slag system designed for stable arc, low spatter, and excellent all-position welding on 620 MPa high-strength steel structures.
Product Overview
AK-E91T1-Ni2 is a flux-cored welding wire for gas shielded arc welding using CO2 shielding gas. It belongs to the titanium slag system and is formulated for stable arc performance, minimal spatter, and easy slag removal.
The wire delivers a smooth weld bead with good appearance and excellent mechanical properties in the deposited metal, including high plasticity and low-temperature toughness suitable for demanding applications.
Application: It is suitable for the welding of 620MPa high strength steel structures, and is mostly used for the welding of steel structures such as ships, machinery man ufacturing, containers, petrochemicals, bridges, etc.
Key Benefits
Stable Arc and Low Spatter.
The titanium slag system ensures consistent arc stability and reduced spatter during welding, which improves process efficiency and reduces post-weld cleanup.
Easy Slag Removal
Slag formed during welding lifts off easily after solidification, minimizing the need for chipping and reducing the risk of slag entrapment in subsequent passes.
Excellent All-Position Welding Performance.
The wire performs reliably in flat, horizontal, vertical, and overhead positions, allowing continuous welding without changing consumables.
Good Plasticity and Low-Temperature Toughness.
The deposited metal exhibits high ductility and impact resistance at low temperatures, meeting the requirements for critical structural applications.
Where It Is Used
- Welding of 620 MPa high-strength steel structures.
- Shipbuilding and marine construction.
- Heavy machinery and equipment manufacturing.
- Petrochemical and container fabrication.
- Bridge and infrastructure steelwork.
Who It Is For
- Steel structure fabricators working with high-strength steels.
- Shipyards and offshore contractors requiring reliable flux-cored wire for structural welding.
- Petrochemical and industrial plant maintenance teams using CO2 shielded welding.
Problems It Solves
- Achieving consistent weld quality on high-strength steels (620 MPa) with good toughness and ductility in the weld metal.
- Reducing spatter and slag removal time during production welding with a stable, easy-to-handle flux-cored wire.
- Maintaining all-position welding capability without sacrificing weld appearance or mechanical properties.
Specifications
Published by the factory for AK-E91T1-Ni2. 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 50 6 Z P C1 2 |
| Classification 2 | AWS A5.20 E91T1-C1A4-Ni2 |
| Classification 3 | GB/T 17493 E621T1-Ni2C |
| Element | Content |
|---|---|
| C | 0.12 |
| Mn | 1.5 |
| 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 CO2 shielded gas metal arc welding (GMAW-G)
- Complies with EN ISO 17632-A:T 50 6 Z P C1 2, AWS A5.20 E91T1-C1A4-Ni2, and GB/T 17493 E621T1-Ni2C classifications.
- Chemical composition: C 0.12%, Mn 1.5%, P 0.03%, S 0.03%, Si 0.80%, Ni 1.75–2.75%
- 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 the selected diameter to ensure stable arc and proper penetration.
- Ensure shielding gas is clean and dry; use CO2 gas with a flow rate appropriate for the joint configuration and welding position.
- Clean joint surfaces from oil, rust, paint, and moisture before welding to prevent porosity and ensure sound welds.
How It Compares
AK-E91T1-Ni2 is a CO2-shielded flux-cored wire with a titanium slag system, offering better process performance and lower spatter than standard carbon steel flux-cored wires. It differs from solid wires in slag formation and deposition rate. Compared to basic flux-cored wires, it provides easier slag removal and better all-position capability, though it may have lower hydrogen control. It is not intended for use in low-hydrogen applications where cracking resistance is critical.
Related Articles
Technical background on this grade from the AKWELD knowledge centre.
Related Grades
Other welding wire in the same family.
AK-E91T1-Ni2 Questions
What standards does AK-E91T1-Ni2 meet?
What are the recommended welding parameters?
What is the nickel content and its effect on weld metal?
Can I get technical data and packaging details before ordering?
What packing is AK-E91T1-Ni2 supplied in?
Can we test AK-E91T1-Ni2 before placing a production order?
Request a Quotation for AK-E91T1-Ni2
Send the diameter, the quantity and the destination port. Our technical team replies with packing, pricing and the data you need to qualify the grade.