69102008 - Bonarc ER70S-6 .030 Solid MIG Wire - 20kg Spool

Premium Mild Steel MIG Wire for Industrial Fabrication

The Bonarc ER70S-6 .030" Solid MIG Wire is a high-performance consumable designed to meet the rigorous demands of industrial manufacturing and structural fabrication. Packaged in a substantial 20kg (approximately 44lb) spool, this wire is engineered for high-volume welding environments where downtime for spool changes must be minimized. The wire conforms to AWS A5.18 ER70S-6 classification, indicating a chemical composition rich in manganese and silicon. These deoxidizers are critical for scavenging impurities from the weld pool, making this wire an excellent choice for base materials that may have light-to-moderate rust, oil, or mill scale.

One of the standout technical characteristics of the Bonarc 70S-6 is its fluidity. The high silicon content lowers the surface tension of the molten pool, resulting in superior wetting action. This allows the weld metal to tie in smoothly at the toes of the weld, reducing the risk of lack of fusion and creating a flat, aesthetically pleasing bead profile. The wire is copper-coated to enhance electrical conductivity and protect against corrosion during storage, ensuring consistent arc ignition and stability.

Precision layer winding is a key feature of this product. Unlike random wound spools which can suffer from snags and tangles, the Bonarc 20kg spool is wound with exacting precision. This ensures smooth payout from the wire feeder, critical for automated or semi-automatic processes where feed interruptions can lead to costly defects. Mechanical properties are robust, offering high tensile strength and excellent toughness values even in lower temperature applications. Whether utilized with 100% CO2 for deep penetration or an Argon/CO2 blend for reduced spatter, this wire delivers reliable, X-ray quality welds across a variety of positions and joint configurations.