Description
ER309LSi MIG Wire – Stainless Welding Wire for Dissimilar Metal Joints
The ER309LSi MIG Wire in 1.0mm diameter offers precision welding for stainless to mild or carbon steel. Supplied in a 15kg spool, this high-quality filler wire is widely used in food-grade fabrication, pipe welding, chemical processing, and general steel construction.
Join Stainless to Mild Steel with Confidence
Designed for joining dissimilar steels, the ER309LSi MIG wire is ideal for welding stainless steels such as 304 or 309 to carbon or low-alloy steels. Its low carbon content reduces the risk of carbide formation, improving corrosion resistance. The added silicon enhances fluidity, allowing for a better-looking weld bead and easier handling.
Stable Arc and Low Spatter for Clean Welds
Whether you’re welding manually or using a semi-automatic system, this MIG wire offers superior arc stability and minimal spatter. The high silicon content ensures smoother operation, better wetting action, and reduced post-weld cleanup—saving both time and effort.
Ideal for Industrial and Fabrication Work
With a 1.0mm wire diameter, this filler metal suits medium-to-heavy applications, including structural fabrication, tank building, railing systems, and industrial kitchens. Its performance is trusted across multiple sectors that demand both strength and corrosion resistance in one weld.
The wire comes on a precision-wound 15kg spool, ensuring consistent feed and fewer wire feed interruptions—critical for maintaining workflow and weld quality.
Explore Our Welding Wire Range
Need other diameters or grades? Browse our complete MIG wire selection for more stainless, flux-cored, and mild steel options.
Learn More About Stainless MIG Wires
To better understand stainless steel MIG wire selection, visit this helpful welding guide from ESAB, which explains how alloy content affects performance and durability.
Weld Smarter with Joints That Last
Whether you’re tackling a new build or a maintenance project, the ER309LSi MIG Wire 1.0mm (15kg) delivers smooth welds, excellent penetration, and the corrosion resistance you need. It’s a trusted solution for dissimilar metal welding that meets the standards of professional fabricators.
