AK-ER308LSi Low Carbon High Silicon Stainless Welding Wire for 304L and Similar Steels.
A super low carbon and high silicon stainless welding wire designed for high-speed welding of 21% Cr 10% Ni and similar stainless steels, with improved puddle fluidity and resistance to intergranular corrosion.
Product Overview
AK-ER308LSi is a super low carbon and high silicon stainless welding wire used for gas metal arc welding (GMAW) of super low carbon 21% Cr 10% Ni stainless steels and similar grades, including ASTM 304L, 304LN, and 308L base metals.
The low carbon content of 0.03 percent minimizes the risk of intergranular corrosion, while the elevated silicon level between 0.65 and 1.00 percent enhances weld puddle fluidity, supporting high-speed welding operations without compromising bead appearance or fusion.
Application: Used to weld super low carbon 21%Cr10%Ni or similar stainless steels, like ASTM 304L, 304LN, 308L base metal etc.
Key Benefits
Low Carbon for Corrosion Resistance.
With a carbon content of 0.03 percent, AK-ER308LSi reduces the likelihood of carbide precipitation at grain boundaries, helping maintain corrosion resistance in welded joints.
High Silicon for Improved Puddle Fluidity.
The silicon content of 0.65 to 1.00 percent increases the fluidity of the molten weld pool, which supports faster travel speeds and better wetting on complex or tight joints.
Suitable for High-Speed Welding.
The combination of low carbon and high silicon allows consistent, stable arc performance and bead formation during high-speed welding processes.
Compliant with EN ISO 14343-A and AWS A5.9.
AK-ER308LSi meets the EN ISO 14343-A:G 19 9 LSi and AWS A5.9 ER308LSi classifications, ensuring compatibility with international welding standards.
Where It Is Used
- Welding of ASTM 304L, 304LN, and 308L stainless steels.
- High-speed GMAW of 21% Cr 10% Ni and similar stainless steel structures.
- Fabrication of pressure vessels, heat exchangers, and chemical processing equipment requiring resistance to intergranular corrosion.
- Maintenance and repair of stainless steel components in petrochemical and power plant environments.
Who It Is For
- Welding consumable distributors supplying stainless steel welding wires.
- Fabricators working with 304L and similar low carbon stainless steels.
- Maintenance teams requiring reliable, high-speed welding solutions for stainless steel equipment.
Problems It Solves
- Intergranular corrosion in welded joints due to high carbon content in filler metal.
- Poor weld puddle control and slow travel speeds in high-speed welding operations.
- Inconsistent bead formation and lack of fusion in automated or semi-automated GMAW processes.
Specifications
Published by the factory for AK-ER308LSi. Values not shown are not published on the datasheet and are marked as such rather than estimated.
| Standard | Designation |
|---|---|
| Classification | EN ISO 14343-A:G 19 9 LSi AWS A5.9 ER308LSi |
| Element | Content |
|---|---|
| C | 0.03 |
| Si | 0.65-1.00 |
| Mn | 1.0-2.5 |
| S | 0.03 |
| P | 0.03 |
| Ni | 9.0-11.0 |
| Cr | 19.5-22.0 |
| Mo | 0.75 |
| Cu | 0.75 |
| Property | Value |
|---|---|
| Tensile strength (MPa) | 605 |
| Elongation (%) | 41 |
Technical Features
- Super low carbon content at 0.03 percent to prevent sensitization.
- Silicon content between 0.65 and 1.00 percent to improve weld puddle fluidity.
- Chromium content of 19.5 to 22.0 percent and nickel content of 9.0 to 11.0 percent for matching base metal composition.
- Molybdenum content of 0.75 percent and copper content of 0.75 percent for enhanced corrosion resistance.
- Tensile strength of at least 605 MPa and elongation of at least 41 percent in deposited metal.
- Supplied in accordance with EN ISO 14343-A:G 19 9 LSi and AWS A5.9 ER308LSi standards.
Use Guide
- Select wire diameter based on joint thickness and welding position; ensure compatibility with the welding machine and shielding gas.
- Use shielding gas as specified in the welding procedure specification, typically a mixture of argon and carbon dioxide or pure argon.
- Clean base metal surfaces of oil, grease, rust, and scale before welding to avoid contamination and porosity.
- Maintain consistent travel speed and arc length during welding to achieve uniform bead profile and full fusion.
How It Compares
AK-ER308LSi and ER308L both weld 304L and similar stainless steels, but ER308LSi has a lower carbon content and higher silicon content, which improves puddle fluidity and reduces the risk of intergranular corrosion. Standard ER308L has higher carbon and lower silicon, making it less suitable for high-speed welding and more prone to sensitization in service. ER308LSi is preferred where high-speed deposition and maximum corrosion resistance are required.
Related Grades
Other welding wire in the same family.
AK-ER308LSi Questions
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What is the silicon content range?
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Can we test AK-ER308LSi before placing a production order?
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