Description
Unimig MIG Wire 0.8mm ER70S-6 x 5kg – MS.8B
Overview
The Unimig ER70S-6 MIG Wire 0.8mm (MS.8B) is a high-quality solid mild steel welding wire designed for consistent results in fabrication, repair, and maintenance work. Supplied on a 5kg precision layer-wound spool, it feeds smoothly through MIG welders, reducing downtime and improving efficiency. The copper-coated finish enhances electrical conductivity and protects against corrosion, helping maintain stable arc performance. This wire suits a wide range of workshop and industrial applications where reliability and clean weld finishes are essential.
Weld Quality & Composition
This ER70S-6 wire features a triple de-oxidised composition with elevated manganese and silicon levels. These elements improve weld quality by handling contaminants such as rust, mill scale, and oil on base materials. The increased silicon content enhances weld pool fluidity, producing smoother bead appearance and reducing post-weld cleanup. It delivers strong, porosity-free welds with high tensile strength, making it suitable for demanding fabrication environments.
Performance & Handling
The 0.8mm diameter is ideal for thin to medium material thickness, offering excellent control with reduced burn-through risk. Precision layer winding ensures consistent wire feed, minimising liner wear and feeding issues. The wire performs best when paired with shielding gases such as CO₂ or Argon/CO₂ mixes, delivering stable arc characteristics and low spatter across various welding conditions.
Applications
This MIG wire is widely used in general fabrication, automotive work, structural steel, and maintenance applications. It performs well in real-world conditions where materials may not be perfectly clean. Its versatility makes it suitable for farm equipment repairs, transport industry work, and light to medium industrial welding tasks.
Standards & Compliance
The ER70S-6 classification meets recognised standards including AWS A5.18 and AS/NZS ISO specifications. These certifications ensure consistent weld quality, reliability, and suitability for professional and industrial use.




