309LT50 - Harris ER309L 2.5mm Stainless Steel TIG Welding Rods (10lb Tube)

Premium Harris ER309L Stainless Steel TIG Welding Rods

The Harris ER309L TIG welding rod is a high-quality austenitic stainless steel filler metal designed for critical welding applications requiring superior corrosion resistance and mechanical strength. Manufactured by The Harris Products Group, a leader in metal working products, this consumable meets AWS A5.9 specifications for the ER309L classification. The "L" designation indicates a low carbon content (maximum 0.03%), which is crucial for minimizing carbide precipitation during the welding process. This feature significantly enhances the weld's resistance to intergranular corrosion, making it suitable for environments where the weld zone is exposed to corrosive elements or high temperatures.

This 2.5mm (approximately 3/32") diameter rod is engineered for precision TIG (GTAW) welding. It is specifically formulated for joining stainless steels of similar composition, such as 309 or 309L, and is the industry standard for joining dissimilar metals. Common use cases include welding 304 or 308 stainless steel to carbon steel or low-alloy steels. The alloy composition ensures a ductile and crack-resistant deposit, even when dilution from the base metal is high. The rods are supplied in a durable 10lb tube, ensuring protection from moisture and contamination during storage and transport.

Metallurgically, the high chromium and nickel content provides excellent oxidation resistance at elevated temperatures. This makes the Harris ER309L an excellent choice for buffer layers in cladding operations before applying a final layer of 308L or 316L. Industrial professionals rely on Harris for consistent chemistry, diameter tolerance, and surface cleanliness, which translates to stable arc characteristics and defect-free welds in rigorous industrial settings.