Home > Electrodes > AWS Class ER309LSi Mig & Tig Filler Welding Wire & Rod
Lecong Stainless, a manufacturer and supplier in Da Nang, Vietnam, provides AWS Class ER309LSi MIG and TIG filler welding wire and rod. This product is tailored for welding stainless steels to carbon steels and low-alloy steels. The addition of silicon improves weld pool fluidity and bead smoothness, making it suitable for automatic welding applications. The low carbon “L” grade enhances resistance to sensitization and intergranular corrosion. ER309LSi offers excellent oxidation resistance and weld toughness. Lecong Stainless supplies ER309LSi locally and globally, providing reliable filler consumables that meet international standards for welding stainless steel with dissimilar materials. Lecong Stainless based in Da Nang, Vietnam is a leading supplier and manufacturer specializing in high-quality stainless steel products. We offer AWS Class ER309LSi MIG and TIG Filler Welding Wire and Rod designed for welding stainless steels to mild steels and for joining dissimilar metals. This filler material is known for its excellent corrosion resistance and high strength. Our commitment to providing top-notch products is matched by our dedication to delivering exceptional quality and service. The Stainless Steel AWS Class ER309LSi ensures enhanced durability and precision in welding applications.
ER309LSi contains about 23–25% chromium, 12–14% nickel, ≤0.03% carbon, and 0.65–1.0% silicon. The silicon addition enhances weld puddle fluidity, improving bead quality. Mechanical properties include tensile strength of 80,000–85,000 psi, yield strength of 55,000–60,000 psi, and elongation of 30–35%. Weld deposits provide toughness, oxidation resistance, and durability in dissimilar metal joints. The low carbon content improves corrosion resistance, while silicon ensures a smooth finish. Suitable for MIG and TIG processes, ER309LSi delivers reliable performance in critical welding applications.
| Classification | AWS A5.9, ER309LSi |
| Form | MIG spools, TIG cut lengths, Reels and Coils |
| Type Of Welding | Inert Gas Welding |
| Current | MIG-DCEP / TIG-DCEN |
| Diameters | .023”, .030”, .035”, .045”, 1/16”, 3/32”, 1/8” |
| Standard TIG straight lengths are available | 36” (914 mm) or 39” (1000 mm) lengths. Other lengths available upon request. |
| AWS ER309LSi MIG & TIG Filler Metal Application & uses |
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| C | Cr | Ni | Mo | Mn | Si | P | S | Cu |
| 0.12 | 24.0-26.0 | 13.0-15.0 | 0.75 | 1.0-2.5 | 0.65-1.00 | 0.03 | 0.03 | 0.75 |
| Yield, kpsi: | 564 |
| Tensile Strength, kpsi: | 87 |
| Elongation%, min: | 41 |
Contact us to get a quick quote for your requirement.
Stainless Steel ER309LSi MIG Filler Wire offers high-quality, silicon-enhanced welds for dissimilar metals, providing excellent corrosion resistance and bead appearance in applications like power generation and industrial fabrication.
Stainless Steel ER309LSi TIG Filler Wire delivers superior weld quality and corrosion resistance for dissimilar metal joints, ideal for high-temperature and critical applications in industries such as petrochemical and structural fabrication.
Stainless Steel ER309LSi TIG Filler Rod ensures strong, corrosion-resistant welds with enhanced fluidity for dissimilar metals, suitable for high-stress applications in power generation, chemical processing, and industrial sectors.
After the production of our AWS Class ER309LSi MIG and TIG Filler Welding Wire and Rod, our quality control team conducts thorough destructive and non-destructive testing using advanced equipment to ensure the superior performance and reliability of the product. Once the testing is complete we carefully package the filler wire and rod using appropriate materials to maintain their quality during shipping. We assure smooth and timely delivery to our customers. Guaranteeing on-time arrival without any delays. All necessary documentation, including certificates and test reports, are provided to the clients upon delivery.
AWS Class ER309LSi MIG and TIG filler wire and rod have many uses for joining stainless steels to carbon or low-alloy steels, as well as for cladding and overlays. Applications include refinery components, chemical processing equipment, boilers, furnace parts, and pipelines. Its smooth bead appearance and stable arc make it ideal for automated and robotic welding. The low carbon design ensures long-term resistance to intergranular corrosion in service. Lecong Stainless supplies ER309LSi across Vietnam and worldwide, providing industries with durable filler metals for dissimilar welding that requires corrosion resistance, strength, and good weld appearance.
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