Self-Shielded Flux-Cored Welding Wire (FCAW-S)

Self-shielded flux core wire — also called FCAW-S wire or inner-shield wire — runs without external shielding gas, making it the go-to choice for outdoor fabrication, structural steel, and field repair where wind and portability matter. The flux coating inside the wire generates its own protective atmosphere as it burns, so you can weld in conditions that would scatter MIG shielding gas instantly.

WeldingMart stocks Lincoln Electric and Blue Demon self-shielded flux core wire in E71T-11, E71T-GS, and E70T-7 classifications across a full range of diameters from .030 in. to 5/64 in. E71T-11 runs on all-position multi-pass applications and is the most widely specified FCAW-S wire for structural and general fabrication. E71T-GS is a single-pass wire optimized for thin gauge sheet metal and light structural work. E70T-7 suits flat and horizontal positions on heavier structural plate.

All wire ships in 10 lb. and 25 lb. spools. Call our welding application specialists at WeldingMart for wire selection help on any specification or code-required application.