63182400 - Bonarc ER316L Stainless Steel TIG Welding Rod - 2.4mm - 5kg Tube

Technical Overview of Bonarc ER316L

The Bonarc ER316L is a premium austenitic stainless steel TIG welding rod designed to meet the rigorous demands of industrial fabrication involving AISI 316 and 316L base metals. This filler metal is characterized by its specific alloy composition, which includes Molybdenum (typically 2.0-3.0%). The addition of Molybdenum is critical as it significantly enhances the weld metal's resistance to pitting and crevice corrosion, particularly in environments containing chlorides, such as marine atmospheres or chemical processing plants.

Classified under AWS A5.9 as ER316L, the 'L' designation indicates an extra-low carbon content (maximum 0.03%). This controlled carbon level is essential for preventing sensitization—the formation of chromium carbides at the grain boundaries—during the welding process. By mitigating sensitization, the Bonarc ER316L maintains high resistance to intergranular corrosion, ensuring the longevity and structural integrity of the weldment even in aggressive media. It is also metallurgically compatible with stainless steels stabilized with Titanium (Ti) or Niobium (Nb), provided the operating temperatures do not exceed 400°C.

This 2.4mm diameter rod is manufactured to precise tolerances to ensure consistent feeding and arc stability. The deposited weld metal exhibits excellent mechanical properties, including high tensile strength and ductility, matching or exceeding that of the base material. It is the preferred choice for critical applications in the petrochemical, pulp and paper, and textile industries where corrosion resistance is paramount.