Flux-Cored Welding Wire

Flux-cored welding wire is a tubular wire filled with flux and alloying agents, giving higher deposition rates, deeper penetration and better out-of-position performance than solid wire. It is a favourite for structural steel, shipbuilding, heavy fabrication and pipe welding where productivity matters. Gas-shielded rutile types classified under AWS A5.20 such as E71T-1 run smoothly in all positions with a slag that supports the pool, while metal-cored and self-shielded wires such as E71T-8 or E71T-GS suit outdoor work where gas shielding would blow away.

Gas-shielded wires normally use CO2 or argon-CO2 mixtures, and the process demands a power source with adequate duty cycle and a wire feeder with knurled drive rolls. Low-temperature nickel-bearing grades such as E71T-1 Ni1 and stainless types like E308LT1-1 and E309LT1-1 extend the range to cryogenic and corrosion-resistant duties.

Seven Star LLC supplies flux-cored wire from LongTeng, Lincoln Electric and Kobelco, with Muscat-based support. Compare with solid welding wire for cleaner, spatter-free welds, or submerged arc welding wire for thick flat plate. Machines are listed in MIG/MAG welding machines and multi-process welding machines; see all welding consumables.