S295129-S71 - Hobart SDX S2Si EM12K Submerged Arc Wire 3/32" 1000lb Drum

Technical Overview of Hobart SDX S2Si

The Hobart SDX S2Si is a premium copper-coated solid wire electrode specifically engineered for the Submerged Arc Welding (SAW) process. Conforming to AWS A5.17 standards with an EM12K classification, this wire is formulated with a medium manganese and silicon composition. This specific chemistry provides enhanced deoxidation capabilities compared to standard EM12 wires, allowing for greater tolerance to surface contaminants such as light rust and mill scale without compromising the integrity of the weld deposit.

The "S2Si" designation highlights the optimized silicon content, which improves the fluidity of the weld puddle and promotes excellent wetting action at the toes of the weld. This results in a flat, smooth bead profile that requires minimal post-weld grinding. The wire is designed to be used in conjunction with neutral or active fluxes to achieve specific mechanical properties required for various industrial codes. Its 3/32-inch diameter supports high current densities and deposition rates, making it an efficient choice for heavy-section welding.

Supplied in a bulk 1000 lb drum, the SDX S2Si is tailored for high-duty cycle automated environments where minimizing downtime is critical. The drum packaging ensures a continuous, twist-free feed, reducing wear on liners and contact tips while maximizing arc-on time. It is suitable for single and multi-pass applications on carbon and low-alloy steels.

• AWS Classification: EM12K
• Process: Submerged Arc Welding (SAW)
• Chemical Composition: Medium Manganese, High Silicon
• Current Type: DC+ / AC (depending on flux/power source)