165332R150 - ESAB OK Tigrod 309L 1/8" Stainless Steel TIG Filler Rod 5kg

Premium Grade ER309L Stainless Steel TIG Filler Metal

The ESAB OK Tigrod 309L is a high-quality, bare, corrosion-resistant chromium-nickel TIG welding rod designated for welding austenitic stainless steels of the 24% Cr / 13% Ni type. This specific alloy composition corresponds to AWS A5.9 ER309L standards. It is engineered primarily for joining dissimilar steels, such as welding stainless steel (AISI 304, 316, etc.) to unalloyed or low-alloy mild steels. The rod is also the industry standard for depositing buffer layers on carbon steel prior to cladding with 308L or 316L filler metals.

Metallurgically, the OK Tigrod 309L features a low carbon content (maximum 0.03%), which significantly increases resistance to intergranular corrosion by minimizing carbide precipitation in the heat-affected zone. The alloy is balanced to provide a ferrite content of FN 3-10 in the weld metal, offering excellent resistance to hot cracking—a critical factor when welding restrained joints or dissimilar materials with varying thermal expansion rates. The 3.2mm diameter provides higher deposition rates suitable for thicker base materials and multi-pass welding applications.

This product is supplied in a robust 5kg tube, ensuring the rods remain straight and protected from environmental contaminants. It is designed for use with DC(-) current and pure Argon shielding gas. The strict manufacturing tolerances of ESAB ensure consistent diameter and chemical composition along the entire length of the rod, providing predictable arc characteristics and mechanical properties in the final weldment.