Description
The 2209 flux core wire, specifically the 2209T1-4 1.2mm Flux Core Wire 15kg, is engineered for welding duplex stainless steels like 2209. Known for its high strength and corrosion resistance, this flux-cored wire delivers top performance in applications such as offshore structures, chemical processing, pressure vessels, and marine fabrication.
This 1.2mm wire is filled with a flux that generates a shielding gas during welding, eliminating the need for external gas in many conditions. It performs exceptionally well outdoors or in drafty environments, where solid wires might struggle. This self-shielding capability helps maintain productivity, especially during on-site fabrication jobs.
The duplex stainless structure of 2209 offers both ferritic and austenitic benefits. As a result, the 2209 flux core wire produces strong, crack-resistant welds with excellent toughness. You’ll also benefit from a smooth arc, low spatter, and clean weld beads. It’s ideal for joining dissimilar steels, especially when high tensile strength is required alongside corrosion resistance.
This wire’s 15kg spool supports long runs without frequent spool changes. The 1.2mm diameter allows for controlled feed speed, deep penetration, and consistent fusion across various joint types and positions. Use it with DC+ polarity and appropriate heat settings for best results. It’s also suitable for flat, horizontal, and even vertical welding, depending on the procedure.
Professionals use 2209 flux core wire when strength and corrosion protection cannot be compromised. Its formulation resists pitting, crevice corrosion, and stress corrosion cracking, especially in chloride-rich or acidic environments. This makes it a favorite in desalination plants, tank farms, and structural piping.
At Fourie Welding & Tool, we supply reliable welding consumables that meet the demands of South Africa’s heavy industry.
For best practices and technical data, visit Outokumpu’s guide on duplex welding.
