Home > Electrodes > AWS Class ER309LSi Mig & Tig Filler Welding Wire & Rod
Njabulo Stainless is a reputable manufacturer and supplier located in Cape Town, South Africa, focusing on high-quality welding consumables. They offer products like the AWS Class ER309LSi MIG and TIG Filler Welding Wire and Rod. With a strong commitment to excellence and reliability, Njabulo Stainless ensures that their products meet strict industry standards, providing optimal performance for critical welding tasks. Their ER309LSi filler materials are crafted for outstanding arc stability and minimal spatter, making them perfect for high-integrity welding projects. Catering to a wide array of industries, Njabulo Stainless consistently supports both local and international clients with top-notch quality, technical know-how, and a dedicated approach to customer satisfaction.
The AWS Class ER309LSi MIG and TIG Filler Welding Wire and Rod feature around 23–25% Chromium, 12–14% Nickel, and a higher Silicon content that enhances weld pool fluidity and bead appearance. The added silicon improves deoxidation, making this alloy ideal for welding under less-than-ideal conditions. This filler metal boasts excellent corrosion resistance and strength, particularly when welding dissimilar metals. Its mechanical properties include a typical tensile strength exceeding 80,000 psi (550 MPa) and good ductility, ensuring durability and toughness across various stainless steel and carbon steel joining 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.
The AWS Class ER309LSi MIG and TIG Filler Welding Wire and Rod are commonly used for joining dissimilar metals, especially stainless steel to carbon or low-alloy steels. They excel in cladding, buffer layers, and connecting different stainless grades in structural, pressure vessel, and piping systems. Key industries include petrochemical, food processing, marine, and power generation. Thanks to their exceptional corrosion resistance and high-quality finish, ER309LSi fillers are often chosen where both aesthetics and strength are crucial. They also shine in maintenance and repair tasks, particularly in environments that experience high temperatures.







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