S669210-055 - Hobart SWX 120 Submerged Arc Welding Flux, 50 lb Bag

Superior Weldability and Slag Removal for Sub Arc Welding

For professional welders operating submerged arc welding (SAW) equipment, the quality of the flux can make or break the daily workflow. The Hobart SWX 120 Sub Arc Flux is designed with the operator in mind, offering a user-friendly experience that translates to higher productivity and less downtime. When you are running long, continuous beads on heavy plate, you need a flux that feeds smoothly, covers the arc completely, and leaves behind a weld bead that requires minimal post-weld cleanup. The SWX 120 excels in these areas, providing a stable arc and a smooth, consistent bead profile that professional welders appreciate.

One of the standout features of the SWX 120 is its excellent slag detachability. In multi-pass welding applications, such as filling the deep grooves of a wind tower section or a pressure vessel seam, stubborn slag can be a major headache. It slows down the process and increases the risk of slag inclusions if not fully removed before the next pass. Hobart has formulated the SWX 120 to ensure that the slag lifts easily, often peeling away on its own as the weld cools. This allows for faster inter-pass cleaning and helps maintain a steady rhythm during long shifts, reducing operator fatigue and increasing overall throughput.

The flux is optimized for use with S2 and S2Si solid wires, a common combination in heavy fabrication shops. This compatibility ensures that you don't need to source exotic or hard-to-find wires to get the best results. The SWX 120 supports both circumferential and longitudinal welding positions, making it versatile for various automated setups. Whether you are welding the long seams of a tank or the round joints of a pipe section, the flux supports the molten pool effectively, preventing spill-over and ensuring a flat to slightly convex bead shape that ties in smoothly at the toes.

Furthermore, the SWX 120 is built to perform in challenging conditions. Its formulation provides good impact toughness even at extremely low temperatures, giving you the confidence that the welds you lay down will stand the test of time and elements. The 50 lb bag is easy to handle and load into the hopper, and the granule size is consistent to prevent clogging in the flux recovery system. Upgrade your sub arc process with a flux that works as hard as you do—choose Hobart SWX 120 for your next heavy-duty project.