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When you need to weld stainless steel to mild steel, the Bonarc ER309L TIG rod is your go-to solution. Known in the trade as the ultimate "problem solver" rod, it allows you to join different types of steel without worrying about cracking or weld failure. Whether you are fixing a bracket on a piece of heavy equipment or fabricating a custom exhaust transition, this rod lays down smooth, consistent beads that wet out perfectly at the toes.
This 2.4mm (3/32") rod is a versatile size, thick enough to fill joints on 1/8" or 3/16" plate but controllable enough for finer detail work if you have a steady hand. The low carbon content means your welds will stay bright and resist rust longer, even if the part heats up during service. Welders appreciate the clean arc stability and the way the puddle flows, making it easier to get that stack-of-dimes look even on tricky dissimilar joints.
The 5kg tube keeps your filler metal straight, clean, and ready to use. No more bent rods or contamination from shop dust. If you do maintenance work, custom fabrication, or repairs where you aren't always sure of the exact base metal grade, keeping a tube of Bonarc 309L in your shop is essential. It serves as an excellent buffer layer if you plan to cap with 308L or 316L, ensuring a strong bond to the base carbon steel.
| Additional Information |
|---|
| Brand:Bonarc |
| Aws Spec:ER309L |
| Diameter:2.5mm (3/32") |
| Packaging:5 kg Tube |
| Grade:309 |
| Weld Process:TIG (GTAW) |
| Material Composition:Austenitic Stainless Steel |
| Shielding Gas Requirement:100% Argon |
| Polarity:DCEN |
| Rod Length:1000mm |
| Applications:Dissimilar Steels, Buffer Layers |
| Packaging Description:5kg tube |
