AK-EA2 Submerged Arc Welding Wire for Low-Alloy and High-Strength Steel.
A low alloy high strength steel submerged arc welding wire designed for use with matching fluxes to achieve excellent mechanical properties in welded joints.
Product Overview
AK-EA2 is a submerged arc welding wire formulated for low-alloy and high-strength steels such as Q420. When used with compatible fluxes like AKJ101 or AKJ105, it delivers consistent and reliable weld metal properties.
The wire is classified under EN ISO 14171-A:S 46 2 FB S2Mo and AWS A5.23 F8A/P0-EA2-A2, meeting requirements for strength, toughness, and chemical composition in structural applications.
Application: With flux (such as AKJ101, AKJ105, etc.) for the welding of low-alloy steel and high-strength steel such as Q420.
Key Benefits
High Tensile Strength and Yield Stress.
The deposited metal achieves tensile strength between 550 MPa and 700 MPa, with yield stress of at least 470 MPa, suitable for demanding structural applications.
Good Ductility and Toughness.
Elongation of at least 20 percent and impact energy of at least 27 J at minus 20 degrees C ensure the weld metal resists cracking under dynamic or low-temperature service conditions.
Controlled Chemical Composition
With carbon at 0.12 percent, manganese at 1.40 percent, and molybdenum between 0.40 and 0.65 percent, the wire provides balanced strength and weldability.
Compatibility with Matching Fluxes.
When used with fluxes such as AKJ101 or AKJ105, AK-EA2 ensures consistent performance, slag removal, and minimal spatter during submerged arc welding.
Where It Is Used
- Welding of low-alloy steels and high-strength steels including Q420.
- Structural components in bridges, pressure vessels, and heavy machinery.
- Fabrication of steel structures requiring high strength and toughness in the weld zone.
Who It Is For
- Steel structure fabricators working with high-strength steels.
- Pressure vessel and boiler makers requiring consistent weld metal properties.
- Welding distributors supplying consumables for structural and heavy industrial applications.
Problems It Solves
- Achieving required mechanical properties in weld metal when joining high-strength steels like Q420.
- Matching filler metal chemistry to base metal specifications without sourcing multiple grades.
- Ensuring consistent performance across multiple weld passes using a single wire-flux combination.
Specifications
Published by the factory for AK-EA2. 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 2 FB S2Mo AWS A5.23 F8A/P0-EA2-A2 |
| Classification 2 | GB/T —— |
| Element | Content |
|---|---|
| C | 0.12 |
| Si | 0.80 |
| Mn | 1.40 |
| S | ≤0.030 |
| P | ≤0.030 |
| Mo | 0.40-0.65 |
| Property | Value |
|---|---|
| Tensile strength (MPa) | 550-700 |
| Yield Stress (MPa) | ≥470 |
| Elongation (%) | ≥20 |
| Impact values (J) | ≥27J/-20℃ |
Technical Features
- Low alloy high strength steel submerged arc welding wire with specified chemical composition.
- Deposited metal tensile strength between 550 MPa and 700 MPa.
- Yield stress of at least 470 MPa.
- Elongation of at least 20 percent.
- Impact toughness of at least 27 J at minus 20 degrees C.
- Chemical composition: C 0.12%, Si 0.80%, Mn 1.40%, S ≤0.030%, P ≤0.030%, Mo 0.40–0.65%
- Classified to EN ISO 14171-A:S 46 2 FB S2Mo and AWS A5.23 F8A/P0-EA2-A2.
Use Guide
- Select matching flux such as AKJ101 or AKJ105 to ensure optimal weld metal properties and slag characteristics.
- Verify joint preparation and fit-up to minimize distortion and ensure full penetration.
- Maintain proper welding parameters as recommended for the specific application and joint configuration.
- Store the wire in dry conditions to prevent moisture absorption, especially in humid environments.
How It Compares
AK-EA2 is a high-strength submerged arc welding wire suitable for low-alloy and high-strength steels. It differs from general-purpose wires like those for mild steel by offering higher strength and toughness through controlled alloying with molybdenum. It is not intended for use on non-alloyed steels where lower strength and higher ductility are sufficient. When compared to other high-strength wires, its composition and performance are tailored to meet EN ISO 14171-A and AWS A5.23 standards.
Related Articles
Technical background on this grade from the AKWELD knowledge centre.
Related Grades
Other welding wire in the same family.
AK-EA2 Questions
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