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

  • A spool of Lincoln ED025907 Lincore 40-O Flux-Cored FCAW-S Welding Wire, 5/64 in, 50 lb Coil stands next to an unopened Lincoln Electric box. The wire is perfect for metal-to-metal wear, with sleek packaging and bold black text.

    Lincoln Electric Lincore 40-0 Flux-Core Wire 5/64"

    $26,998.81
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  • Four coils of Flux-Cored Welding Wire are stacked next to a Lincoln Electric branded box. The metallic, circular coils complement the boxs bold black and red graphics and handling symbols.

    Lincoln Innershield NR-203 Nickel (1%) 5/64 inch FCAW-S Welding Wire

    From $505.01
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  • A spool of Lincore 33 flux-cored wire stands upright next to a brown box labeled Lincoln Electric, with black and white graphics and text, ideal for metal-to-metal wear and build-up welding wire applications.

    Lincoln Electric Lincore 33 5 Flux-Core Wire 5/64"

    From $237.94
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  • A 50 lb coil of shiny Lincoln ED017822 Innershield NR-311 Ni Flux-Cored Welding Wire (3/32 in) stands upright beside two stacked Lincoln Electric boxes featuring a black and red graphic with product details.

    Lincoln Innershield NR-311 Ni 3/32 inch FCAW-S Welding Wire

    From $471.60
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  • Lincoln ED037672 Lincore 65 Plus Flux-Cored Welding Wire 7/64", 600 lb drum with box—wear-resistant, top choice at WeldingMart.

    Lincoln Lincore 65 Plus 7/64 inch FCAW-S Welding Wire

    From $795.01
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  • Lincoln ED012522 Innershield NR-232 flux-cored welding wire with four 13.5 lb coils for FCAW-S, ideal for structural steel projects.

    Lincoln E71T-8-H16 (Innershield NR-232 FCAW-S Welding Wire)

    From $226.86
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  • Lincoln ED012518 Innershield NR-232 Flux-Cored Welding Wire 13.5lb coils, for seismic structural fabrication, by Lincoln Electric.

    Lincoln Innershield NR-232 FCAW-S Welding Wire

    From $209.36
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  • A spool of Innershield NR-305 FCAW-S flux-cored welding wire is placed beside two brown Lincoln Electric boxes, one upright and one lying flat, with bold black and red graphics on the packaging.

    Lincoln Electric Innershield NR-305 Flux-Core Wire 3/32"

    From $215.32
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  • A spool of abrasion resistant Lincore 65-O welding wire stands upright next to a brown Lincoln Electric box. The wire is coiled neatly, and the box features black branding and graphic lines.

    Lincoln Lincore 65-O 7/64 inch FCAW-S Welding Wire

    From $710.01
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  • A Lincoln ED030640 Innershield NR-203MP Flux-Cored FCAW-S Welding Wire 0.068 in, 25 lb spool stands upright beside two Lincoln Electric boxes with logos and bold graphics, all displayed on a white background.

    Lincoln Electric Innershield Flux-Core Wire

    From $260.39
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  • A spool of Lincoln Electric Flux-Cored Welding Wire sits in front of two cardboard boxes with the Lincoln Electric logo and a stylized black, red, and beige graphic design, ideal for high speed welding on specialty coated steels.

    Lincoln Innershield NR-152 0.045 inch FCAW-S Welding Wire

    From $230.96
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  • A spool of flux-cored welding wire with metallic strands is shown beside two cardboard boxes labeled Lincoln Electric with black and red graphics on a white background, ideal for use in the railroad industry, including manganese frogs.

    Lincoln Lincore FROG MANG 5/64 inch FCAW-S Welding Wire

    From $305.01
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  • A coil of metal-cored welding wire stands upright next to a brown cardboard box labeled Lincoln Electric in black text with a stylized sunburst design.

    Lincoln Lincore 40-S 1/8 inch FCAW-S Welding Wire

    From $467.13
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  • A 25 lb steel spool of Lincoln ED031131 Lincore 60-O Flux-Cored FCAW-S Welding Wire (0.045 in) stands upright beside two brown Lincoln Electric boxes featuring the company logo and white stylized welding sparks.

    Lincoln Lincore 60-O FCAW-S Welding Wire

    From $177.68
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  • A large cylindrical container with a metal top and bottom, wrapped in brown paper labeled “Lincoln Electric.” The label features black and red geometric designs, product information, and highlights Flux-Cored Welding Wire for high deposition rates.

    Lincoln E70T-4 (Innershield NS-3M FCAW-S Welding Wire)

    From $345.01
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  • Lincoln ED016354 Innershield NR-211-MP 0.035" flux-cored welding wire spool with Lincoln Electric boxes, 10 lb, WeldingMart.

    Lincoln E71T-11 (Innershield NR-211-MP FCAW-S Welding Wire)

    From $86.00
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  • Lincoln ED026858 Innershield NR-212 Flux-Cored Welding Wire 5/64" 50 lb coil with Lincoln Electric welding supply boxes and logos.

    Lincoln E71TG-G-H16 (Innershield NR-212 FCAW-S Welding Wire)

    From $109.01
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  • A white plastic bucket sits behind five dark metal coils of Lincoln ED011277 Lincore 55 Flux-Cored FCAW-S Welding Wire, 5/64 in, 4 x 14 lb coils. The highly wear resistant wire is arranged closely on a white background.

    Lincoln T Fe2 (Lincore 55 FCAW-S Welding Wire)

    From $146.46
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  • A large spool of abrasion resistant flux-cored welding wire with a copper frame is displayed in front of two cardboard boxes labeled Lincoln Electric on a white background.

    Lincoln Lincore 50 FCAW-S Welding Wire

    From $174.01
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  • Lincoln ED031030 Innershield NR-233 0.072" 25 lb flux-cored welding wire spool with Lincoln Electric boxes; FCAW-S accessory.

    Lincoln Innershield NR-233 FCAW-S Welding Wire

    From $205.26
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  • A 50 lb coil of Lincoln ED014459 Innershield NR-311 Flux-Cored Welding Wire (5/64 in) stands upright before two Lincoln Electric boxes with bold black and red graphics, its metallic texture highlighted by bright lighting.

    Innershield NR-311 E70T-7 Flux-Core Wire | Lincoln

    From $207.12
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  • Lincoln ED036678 Innershield NR-232-H flux-cored welding wire, 0.072" 25lb spool with box—ideal for structural fabrication.

    Lincoln Electric Innershield NR-232 Flux-Core Wire

    $262.51
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  • A large spool of flux-cored wire sits in front of two brown Lincoln Electric boxes, featuring the company logo and graphic design printed in black and red.

    Lincoln Electric Lincore Flux-Core Wire 5/64"

    From $249.21
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  • Lincoln ED035353 Lincore Super Rail Flux-Cored Welding Wire, 1/16", 25 lb spool on gray reel for carbon steel rail repairs.

    Lincoln Electric Lincore Flux-Core Wire

    From $272.51
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  • A large cylindrical cardboard drum with a metal lid and base, labeled Lincoln Electric. The drum features black, red, and beige geometric designs and text, ideal for storing Flux-Cored Welding Wire for Hadfield-type repair applications.

    Lincoln T Fe9 (Lincore M FCAW-S Welding Wire)

    From $277.68
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  • A large spool of flux-cored wire with a copper frame is positioned in front of two brown Lincoln Electric branded boxes, all set against a white background.

    Lincoln Electric Lincore 33 Flux-Core Wire

    From $287.68
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  • A 50 lb coil of Lincoln ED022060 Lincore 15CrMn Flux-Cored Welding Wire (5/64 in) sits beside a brown Lincoln Electric box, which features black graphics and text with a touch of red visible through its right-side opening.

    Lincoln Electric Lincore 15CrMn Flux-Core Wire

    From $327.68
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  • A spool of flux-cored welding wire with metallic strands sits beside two stacked Lincoln Electric cardboard boxes, featuring the company logo and graphic design on a white background, ideal for build-up and repair.

    Lincoln Electric Lincore Flux-Core Wire

    From $241.93
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  • Lincoln ED035749 SHS 9500U Flux-Cored FCAW-S Welding Wire, 0.045" 33 lb spool, in box; premium welding equipment at WeldingMart.

    Lincoln SHS 9500U Flux-Cored FCAW-S Welding Wire

    From $765.01
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  • Lincoln ED035658 SHS 9700U Flux-Cored Welding Wire 0.045", 33lb spool, in branded box with Lincoln Electric tools and electrodes.

    Lincoln SHS 9700U Flux-Cored FCAW-S Welding Wire

    From $805.53
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  • Lincoln ED035650 SHS 9800U FCAW-S Welding Wire 0.045", 33 lb spool, boxed—premium flux-cored wire from WeldingMart tools.

    Lincoln Electric Flux-Core Wire

    From $1,158.30
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  • WeldingMart logo with bold black W, orange wire lines, brand name, "LETS WELD"; inspired by FCAW-S welding wire and tools.

    Lincoln SHS 9192U Flux-Cored FCAW-S Welding Wire

    From $1,565.01
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  • Warehouse pallet with Lincoln 71 T1 .045" welding wire spools, 33lb boxes, 50 per pallet, total 1,650 lbs, ED037801.

    Lincoln Electric Innershield 71 Flux-Core Wire

    $6,211.76
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  • A 25 lb spool of Lincoln ED030650 Innershield NR-311 Ni Flux-Cored FCAW-S Welding Wire (5/64 in) sits next to two stacked Lincoln Electric boxes with branded logos and graphics, all displayed on a white background.

    Lincoln Electric Innershield NR-311 Flux-Core Wire

    From $255.92
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  • A coil of Flux-Cored Welding Wire stands upright in front of two stacked Lincoln Electric boxes. The packaging, featuring black and red graphics with the company logo, highlights the Innershield NR-152 model for Robotic Welding.

    Lincoln Innershield NR-152 Flux-Cored Self-Shielded Welding Wire

    From $390.01
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  • Several coils of Lincoln ED012438 Innershield NR-207 Flux-Cored FCAW-S Welding Wire, 5/64 in, (4) 14 lb Coil, are stacked before a large white bucket. The wire is tagged for API Pipe Grades X42-X70 and pipeline welding use.

    Lincoln Electric Innershield NR-207 Flux-Core Wire

    From $585.01
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  • Lincoln ED032890 Pipeliner NR-208-P FCAW-S Welding Wire 5/64in 14lb coils, welding accessory, stacked before labeled bucket.

    Lincoln Electric Pipeliner NR-208 Flux-Core Wire

    From $575.01
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  • A 50 lb coil of Lincoln ED012632 Innershield NR-311 Flux-Cored Welding Wire (7/64 in) is upright before two stacked brown Lincoln Electric boxes with black and red graphics, all set against a plain white background.

    Lincoln Electric Innershield ED012632 Flux-Core Wire 7/64" – 50 lb

    $365.01
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  • Coils of shiny flux-cored welding wire stacked in front of a large white plastic bucket with a handle and label. The FCAW-S welding wire is neatly wound, ideal for X70 grade pipe, and the bucket features detailed instructions.

    Lincoln Electric Pipeliner ED030924 Flux-Core Wire 5/64" – 56 lb Hs Pail (4 x 14 lb Coils)

    $525.01
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  • Lincoln ED030651 Innershield® NS-3M

    Lincoln ED030651 Innershield® NS-3M

    $194.10 $237.75
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  • Lincoln ED027846 Innershield® NR®-152

    Lincoln ED027846 Innershield® NR®-152

    $3,571.20 $4,376.00
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  • A large cylindrical cardboard drum with metal rims, labeled Lincoln Electric. Featuring black and red geometric designs, it is used for storing industrial materials such as Innershield NR-5 flux-cored welding wire for FCAW-S applications.

    Lincoln ED012699 Innershield NR-5 Flux-Cored FCAW-S Welding Wire, 3/32 in, 600 lb Speed Feed Drum

    $3,850.01
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  • A large wooden spool is tightly wound with Lincoln ED012163 Innershield NR-131 flux-cored FCAW-S welding wire, 3/32 in, 600 lb speed feed reel, its flat wooden sides showing visible grain and screw holes as the dark gray wire is neatly coiled.

    Lincoln Electric Innershield ED012163 Flux-Core Wire 3/32" – 600 lb

    $3,540.01
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  • Four coils of Lincoln ED023366 Innershield NR-208-H Flux-Cored Welding Wire, 5/64 in, 14 lb each, are stacked in front of a large white bucket with a handle and multi-language label. Shiny bands secure the neatly wound coils.

    Lincoln Electric Innershield ED023366 Flux-Core Wire 5/64" – 56 lb Hs Pail (4 x 14 lb Coils)

    $15,590.41
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  • A 25 lb steel spool of Lincoln ED031134 Lincore T & D Flux-Cored FCAW-S Welding Wire (1/16 in) stands upright next to two brown Lincoln Electric boxes with logo, black graphics, and product details, all set against a plain white background.

    Lincoln Electric Lincore ED031134 Flux-Core Wire 1/16" – 25 lb

    $350.01
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  • Several coils of flux-cored welding wire are stacked in front of a large white plastic bucket with a handle and product label. The setting appears industrial or related to construction or manufacturing.

    Lincoln Electric Innershield ED033827 Flux-Core Wire 5/64" – 56 lb Pail (4 x 14 lb Coils)

    $560.01
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  • Lincoln Electric ED035566 Innershield NR-555 Flux-Cored Welding Wire, 5/64" 25lb spools—essential FCAW-S welding supplies.

    Lincoln ED035566 Innershield NR-555 Flux-Cored FCAW-S Welding Wire, 5/64 in, 25 lb Spool

    $242.01
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  • Lincoln ED034501 Innershield® NS-3M – 25 lb Spool

    Lincoln ED034501 Innershield® NS-3M – 25 lb Spool

    $240.00
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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.

Self-Shielded Flux-Cored Welding Wire (FCAW-S) Questions & Answers