MIG welding wire, ER70S-6 grade, provides high tensile strength and deoxidizing properties for welding on dirty or rusty carbon steel. The S-6 classification indicates added manganese and silicon, which improve puddle wetness and bead appearance. This wire type is specified for applications requiring robust welds and good penetration, especially when base metal cleanliness is not ideal, surpassing basic ER70S-3 wires in versatility.
This wire is used for general fabrication, structural steel work, and automotive repairs. It maintains stable arc characteristics and delivers consistent welds in single-pass or multi-pass applications. Its formulation resists porosity when welding over light mill scale or rust, ensuring durable joints over time.
Specifications
- Material / grade: ER70S-6 carbon steel
- Size: .035in
- Finish: Copper coated
- Pack quantity: 33 lb spool
- Tensile strength: 70,000 psi minimum
In stock. Ships same day on orders placed before 3:00 pm CT. 30-day returns on unused stock in original packaging.





