63093200 - Bonarc ER309L Stainless Steel TIG Rod - 3.2mm (5kg Tube)

Premium ER309L Stainless Steel TIG Filler Metal

The Bonarc ER309L TIG Rod (3.2mm) is a high-performance austenitic stainless steel filler metal designed for the most demanding welding applications. Packaged in a convenient 5kg tube, these cut-length rods are manufactured to meet AWS A5.9 specifications, ensuring consistent chemistry and mechanical properties. The "L" in ER309L stands for Low Carbon, a critical feature that minimizes the risk of intergranular carbide precipitation during the welding process. This characteristic significantly enhances the finished weld's resistance to intergranular corrosion, making it a reliable choice for critical components.

This alloy is specifically engineered for joining dissimilar metals, such as welding Type 309 stainless steel to carbon steel or low-alloy steels. It is also the industry standard for applying buffer layers before cladding with 308L filler metals. The high chromium and nickel content provides excellent oxidation resistance at elevated temperatures, ensuring the longevity and structural integrity of the weldment. Whether used in petrochemical piping, power generation equipment, or general industrial fabrication, the Bonarc ER309L delivers smooth feeding, stable arc characteristics, and aesthetically pleasing weld beads.

For professional fabricators requiring a versatile and robust filler metal, this 3.2mm rod offers the deposition rates needed for medium-to-thick sections while maintaining the control characteristic of the TIG process. It is an essential consumable for any shop dealing with mixed-metal fabrication or maintenance repairs.