S2532 - ER70S-2 Carbon Steel TIG Welding Rod 5/32" (4.0mm) - 10lb

Industrial Grade ER70S-2 TIG Filler Metal

The ER70S-2 Mild Steel TIG Rod (4.0mm / 5/32") is a premium, triple-deoxidized carbon steel filler metal designed for critical welding applications where weld integrity is paramount. Unlike standard S-6 wires, the S-2 classification incorporates specific additions of Zirconium, Titanium, and Aluminum, alongside Silicon and Manganese. This potent combination of deoxidizers acts as a powerful cleaning agent within the molten weld pool, effectively scavenging oxygen and nitrogen to prevent porosity.

This specific chemistry makes ER70S-2 the industry standard for single-pass welding on carbon steels that may exhibit surface contaminants such as rust, mill scale, or oil. It is widely specified for root pass welding in pipe fabrication, particularly in the power generation, petrochemical, and offshore industries, due to its ability to produce defect-free, X-ray quality deposits. The 4.0mm (5/32") diameter is well-suited for heavier wall thicknesses and filling larger joint preparations efficiently.

Josef Gas provides these rods in durable 10lb tubes to ensure moisture protection and easy storage in the shop environment. The rods are manufactured to strict tolerances, ensuring consistent feeding and arc stability. With a minimum tensile strength of 70,000 psi, welds produced with this filler metal meet or exceed the mechanical properties of most mild steel base plates (such as A36 or A106). For industrial fabricators requiring reliability in out-of-position welding and superior bead cosmetics, this ER70S-2 rod is the definitive choice.