S520812-I26 - Hobart FabCO 309L .045" Flux-Cored Stainless Wire, 33lb Spool

Master Dissimilar Metal Welding with Hobart FabCO 309L

When your project demands a strong, reliable bond between stainless steel and mild steel, the Hobart FabCO 309L .045" flux-cored wire is your go-to solution. This 33lb spool is designed to tackle the common challenges of welding dissimilar alloys, providing a crack-resistant weld deposit that stands up to demanding service conditions. It is an essential consumable for fabrication shops that frequently handle maintenance, repair, and overhaul (MRO) tasks where steel grades vary.

The FabCO 309L excels in playability. Welders appreciate the smooth arc characteristics and the flat, well-washed bead appearance that rivals standard solid wire, but with the added productivity of flux-core. The slag system is designed for easy detachment, minimizing the need for heavy grinding or chipping between passes. This makes it ideal for multi-pass applications where speed and efficiency are paramount. The wire's all-position capability means you can weld vertical-up or overhead without changing consumables, streamlining your workflow.

Safety and quality are built into the chemistry of this wire. The "Low Carbon" formulation helps prevent carbide precipitation, preserving the corrosion resistance of the stainless steel heat-affected zone. Whether you are repairing heavy equipment, fabricating food-grade vessels, or working on structural supports in a chemical plant, Hobart FabCO 309L gives you the confidence that your welds will hold. Compatible with standard MIG equipment capable of running flux-cored wire (knurled drive rolls recommended).

Applications & Usage

• Dissimilar Joining: Carbon steel to 304/316 stainless steel.
• Buffer Layers: First pass cladding on carbon steel before capping with 308L.
• Industries: Pulp and paper, food and beverage, petrochemical, and general fabrication.