ER70S-6 is a copper-coated solid MIG wire for mild, carbon, and low-alloy steel. Its manganese and silicon content supports welding on steel with mill scale, rust, or light surface contamination; use with CO₂ or an Ar/CO₂ shielding-gas mixture. Materials and Applications Mild steel, carbon steel, and low-alloy steel Structural work, automotive repair, farm equipment, and general fabrication Suitable for steel with mill scale, rust, or other light surface contamination Key Specifications Classification: ER70S-6 Process: MIG Material: Copper-coated mild steel Shielding gas: CO₂ or Argon / CO₂ mixture Spool weight: 10 lb (4.5 kg) Diameter options: .030" (0.8 mm) and .035" (0.9 mm) Welding use: Single-pass and multi-pass welding Welder Requirements Use with a MIG welder that accepts a 10 lb (4.5 kg) spool and the selected wire diameter, with the shielding gas required by the welding procedure.
