S669410-055 - Hobart HA-495 Active Submerged Arc Welding Flux, 50lb Bag

High-Performance Active Flux for Submerged Arc Welding

The Hobart HA-495 Sub-Arc Flux is a premium agglomerated active flux specifically engineered to tackle the challenges of high-speed fillet welding. Designed for the Submerged Arc Welding (SAW) process, this flux is characterized by its ability to perform exceptionally well on base metals that may not be perfectly clean. Its active formulation provides a distinct advantage when welding over rust, mill scale, or light oil, making it a go-to choice for structural fabrication environments where pre-weld cleaning must be minimized to maintain throughput.

One of the standout features of the HA-495 is its bead profile control. It offers excellent wetting action, which ensures that the weld metal ties in smoothly at the toes of the fillet, reducing the risk of undercut and stress risers. This is particularly beneficial in single and double pass applications where weld integrity and appearance are paramount. The flux supports high travel speeds without compromising arc stability, allowing fabricators to maximize productivity in automated or semi-automated setups.

Post-weld efficiency is also a key benefit of this product. The slag system is designed for easy release, often peeling away with minimal effort. This reduces the labor hours required for chipping and grinding between passes or after the final weld. However, as an active flux containing manganese and silicon, it is strictly recommended for limited pass applications (typically single or double pass) to avoid excessive alloy buildup in the weld deposit, which could affect mechanical properties in multi-pass scenarios.

Packaged in a durable 50-pound bag, the Hobart HA-495 is easy to transport and store in the shop. It is compatible with both AC and DC power sources, providing flexibility depending on the specific equipment and arc blow considerations of the job. Whether used in railcar manufacturing, shipbuilding, or general heavy equipment fabrication, this flux delivers consistent, high-quality results.