S295143-S20 - Hobart SDX EM12K 1/8" Submerged Arc Welding Wire 55lb Coil

High-Performance Submerged Arc Welding Wire

The Hobart SDX S2Si-EM12K is a premium copper-coated carbon-steel solid wire engineered specifically for the submerged arc welding (SAW) process. Designed to meet the rigorous demands of heavy industrial fabrication, this 1/8-inch diameter wire is classified under AWS A5.17 as EM12K. It features moderate levels of manganese and silicon, which act as effective deoxidizers, helping to scavenge impurities from the weld pool and ensure sound, defect-free deposits even on steels with minor surface contaminants.

This wire is a versatile, general-purpose solution suitable for joining a broad spectrum of non-alloyed and fine-grain steels. Its formulation allows it to be paired with a wide variety of Hobart fluxes, making it an adaptable choice for shops that handle diverse projects. Whether used for single-pass fillet welds or multi-pass butt welds in thick plate sections, the SDX S2Si-EM12K delivers consistent arc stability and bead appearance.

Packaged in a substantial 55 lb coil, this product is optimized for continuous welding operations where minimizing changeover time is critical. The copper coating not only protects the wire from oxidation during storage but also enhances electrical conductivity at the contact tip, reducing wear and improving feedability. This makes it an excellent choice for automated and semi-automated SAW systems used in the manufacturing of large-scale components.

Industrial Reliability

Industries such as shipbuilding, railcar manufacturing, and power generation rely on the consistency of Hobart's SDX series. The wire's mechanical properties are tailored to meet the structural integrity requirements of heavy equipment and infrastructure projects, including bridge fabrication and wind tower construction.