Lincoln Electric ER309L

The Lincoln Electric ER309L dissimilar TIG filler rod is a stainless filler for GTAW/TIG welding classified as AWS A5.9 ER309L. It is used when the joint requires joining stainless steel with carbon steel or when the procedure needs a transition filler to manage base metal dilution. In industrial maintenance it is a useful reference for repairing mixed equipment, supports, adaptations and erection where stainless steels coexist with common steels. Within the SoldaForce catalog, this page differs from Lincoln Electric ER308L because ER308L targets similar 304/304L stainless; ER309L is purchased when the application calls for a solution for dissimilar materials.

Selection guide

• Select ER309L for dissimilar joints between stainless steel and compatible carbon steel.
• Use ER308L when the joint is 304/304L stainless against similar stainless.
• Confirm Lincoln Electric brand requirements if the project requires specific traceability.
• Define packaging according to number of joints, consumption and jobsite storage.

Use recommendations

• Prepare the stainless side and the carbon steel side separately.
• Avoid dragging slag, rust or ferrous particles toward the stainless face.
• Control dilution, sequence and heat input according to the welding procedure.
• Keep ER309L rods identified so they are not confused with ER308L.

SoldaForce supplies Lincoln Electric ER309L for TIG applications in dissimilar joints. We dispatch to Bogotá, Medellín, Cali, Barranquilla and all of Colombia. Request a quote via WhatsApp with base materials, quantity and city.