AK-EM13K Copper-Plated Welding Wire for Carbon Steel and Low-Alloy Applications.
A copper-plated solid wire designed for submerged arc welding with HJ330, HJ360, HJ431, or SJ101 fluxes, delivering consistent mechanical properties on carbon steel, boiler, pressure vessel, bridge, and ship structures.
Product Overview
AK-EM13K is a copper-plated solid welding wire formulated for submerged arc welding with fluxes such as HJ330, HJ360, HJ431, or sintered welding wire SJ101. It is matched to low manganese and silicon weld metal compositions for use on carbon steel, boiler, pressure vessel, bridge, and ship structures at corresponding strength levels.
The wire meets EN ISO 14171-B:2010 SU25 and AWS A5.17 EM13K GB/T 14957 H10MnSiA standards. Its chemical composition includes carbon (0.06–0.15%), silicon (0.45–0.75%), manganese (0.90–1.40%), sulfur (≤0.03%), and phosphorus (≤0.025%).
Deposited metal properties include tensile strength of 480–650 MPa, yield stress of at least 400 MPa, elongation of at least 22%, and impact toughness of at least 27 J at minus 20 degrees C.
Application: It is matched with melting welding HJ330, HJ360, HJ431 or sintering welding SJ101 and other alloy steels that can be used for welding carbon steel, boiler, pressure vessels, bridges, ships and other corresponding strength levels.
Key Benefits
Consistent Weld Metal Chemistry.
The wire’s controlled carbon, silicon, and manganese content ensures weld metal chemistry aligns with low-manganese and low-silicon requirements, supporting consistent mechanical performance in carbon steel and low-alloy applications.
Good Mechanical Properties
Deposited metal achieves tensile strength between 480 and 650 MPa, yield stress of at least 400 MPa, elongation of at least 22%, and impact energy of at least 27 J at minus 20 degrees C.
Compatibility with Multiple Fluxes.
AK-EM13K is recommended for use with HJ330, HJ360, HJ431, and sintered SJ101 fluxes, enabling consistent performance across different submerged arc welding processes.
Copper-Plated Surface for Stable Arc.
The copper plating improves conductivity and arc stability during welding, reducing spatter and ensuring smooth wire feeding in automated or semi-automated systems.
Where It Is Used
- Carbon steel fabrication in boilers and pressure vessels.
- Bridge and shipbuilding structures requiring consistent weld metal properties.
- Submerged arc welding of low-alloy steels with matching strength levels.
- Automated and semi-automated welding operations using HJ330, HJ360, HJ431, or SJ101 fluxes.
Who It Is For
- Welding consumable distributors supplying submerged arc welding materials.
- Boiler and pressure vessel manufacturers requiring certified wire for structural joints.
- Shipyards and bridge fabricators using automated SAW processes with matching fluxes.
- Fabricators working with carbon steel and low-alloy steels where mechanical properties are critical.
Problems It Solves
- Mismatch between wire chemistry and base metal requirements in carbon steel and low-alloy applications.
- Inconsistent mechanical properties in weld metal due to uncontrolled carbon, silicon, or manganese levels.
- Difficulty in finding a single wire compatible with multiple flux types (HJ330, HJ360, HJ431, SJ101) for consistent performance.
- Poor arc stability and feeding issues from non-copper-plated or poorly coated wires in automated systems.
Specifications
Published by the factory for AK-EM13K. Values not shown are not published on the datasheet and are marked as such rather than estimated.
| Standard | Designation |
|---|---|
| Classification 1 | EN ISO 14171-B: 2010 SU25 |
| Classification 2 | AWS A5.17 EM13K GB/T 14957 H10MnSiA |
| Element | Content |
|---|---|
| C | 0.06-0.15 |
| Si | 0.45-0.75 |
| Mn | 0.90-1.40 |
| S | ≤0.03 |
| P | ≤0.025 |
| Property | Value |
|---|---|
| Tensile strength (MPa) | 480-650 |
| Yield Stress (MPa) | ≥400 |
| Elongation (%) | ≥22J |
| Impact values (J) | ≥27J/-20℃ |
Technical Features
- Copper-plated solid wire for improved conductivity and feeding.
- Chemical composition: C 0.06–0.15%, Si 0.45–0.75%, Mn 0.90–1.40%, S ≤0.03%, P ≤0.025%
- Tensile strength: 480–650 MPa.
- Yield stress: ≥400 MPa.
- Elongation: ≥22%
- Impact toughness: ≥27 J at minus 20 degrees C.
- Complies with EN ISO 14171-B:2010 SU25 and AWS A5.17 EM13K GB/T 14957 H10MnSiA.
Use Guide
- Select wire diameter based on joint thickness and welding setup. Use with HJ330, HJ360, HJ431, or SJ101 fluxes as specified.
- Ensure the wire is stored in dry conditions to prevent moisture absorption, which can affect weld quality.
- Clean the joint surfaces from oil, rust, paint, and moisture before welding to avoid porosity and cracking.
- Maintain proper wire feed speed and travel speed during welding to achieve consistent bead profile and penetration.
How It Compares
AK-EM13K is a copper-plated solid wire for submerged arc welding with HJ330, HJ360, HJ431, or SJ101 fluxes. It is designed for carbon steel and low-alloy applications requiring controlled low manganese and silicon content. Unlike higher-manganese wires, it delivers lower weld metal hardness and better toughness at low temperatures. It is not intended for use with basic fluxes or in gas metal arc welding (GMAW).
Related Articles
Technical background on this grade from the AKWELD knowledge centre.
Related Grades
Other welding wire in the same family.
AK-EM13K Questions
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