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ED030639 - Lincoln Innershield NR-212 .045 Flux-Core Wire 25lb Spool

Packaging: 25lb spool
$22.64/lb $282.75/25lb spool only $11.31/lbSave 50%

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OVERVIEW

Lincoln Electric Innershield NR-212: The All-Position Solution

Welders seeking a reliable, gasless wire solution for mild steel will find the Lincoln Electric Innershield® NR®-212 to be a superior performer in its class. This .045-inch flux-cored wire (SKU: ED030639) is built to meet AWS E71TG-G specifications, offering a robust combination of mechanical properties and operator appeal. The self-shielded nature of the FCAW-S process means you can weld outdoors or in drafty shop conditions without worrying about porosity caused by the loss of shielding gas.

The NR-212 is specifically designed to be user-friendly, even for operators with varying levels of experience. Its smooth arc characteristics reduce operator fatigue, while the easy slag removal minimizes post-weld cleanup time. A critical advantage of this wire is its ability to handle poor fit-up. In real-world fabrication scenarios, joint preparation isn't always perfect; the NR-212 excels at bridging gaps and ensuring fusion even when the fit is less than ideal. This makes it a favorite for maintenance departments and job shops where adaptability is key.

Packaged in a convenient 25lb spool, this wire is compatible with a wide range of industrial wire feeders capable of running .045" wire. It operates on DCEN polarity, which is standard for Innershield products, ensuring the flux core activates correctly to protect the weld pool. From horizontal fillets to difficult vertical welds, the fast-freezing slag system supports the puddle, allowing for higher deposition rates in out-of-position work compared to solid wires. Whether you are fabricating machine guards, repairing agricultural equipment, or assembling light structural components, the Lincoln NR-212 provides the quality and consistency synonymous with the Lincoln Electric brand.

Performance Benefits

  • Gasless Convenience: No cylinders, regulators, or hoses required.
  • All-Position Capability: Excellent for vertical and overhead welds.
  • Gap Bridging: Superior performance on joints with poor fit-up.
  • Thickness Range: Effective on materials from 16 gauge up to 3/4 inch.
Additional Information
Brand:Lincoln Electric
Diameter:0.045 in
Packaging Description:25lb spool
AWS Spec:E71TG-G
Weld Process:Gasless, Flux-Cored (FCAW)
Position:All Position
Polarity:DCEN
Material Composition:Mild Steel
Wire Diameter:0.045"
Wire Type:Self-Shielded Flux-Cored
Shielding Gas Requirement:None (Self-shielded)
Spool Size:25 lb
AWS Classification:E71TG-G
Applications:General Fabrication, Sheet Metal, Maintenance
Wire Finish:Bare
Welding Position:All Position

INCLUDED

  • 1 x 25lb Spool of Innershield NR-212 .045" Flux-Core Wire

APPLICATIONS

  • General plate fabrication
  • Maintenance and repair welding
  • Light structural steel
  • Sheet metal applications
  • Machine parts and frames
  • Welding on galvanized steel

FAQ

No, Innershield NR-212 is a self-shielded flux-cored wire (FCAW-S) and does not require external shielding gas.

This wire requires DCEN (Direct Current Electrode Negative), also known as straight polarity.

The Lincoln Innershield NR-212 meets the AWS classification E71TG-G.

Yes, it is designed for all-position welding, including vertical-up and overhead, thanks to its fast-freeze slag.

It is generally recommended for mild steel thicknesses up to 3/4 inch (19.1 mm).

Knurled drive rolls are recommended for flux-cored wires to prevent crushing the wire while ensuring positive feeding.

Yes, flux-cored wires like NR-212 generally handle moderate rust and mill scale better than solid MIG wires, though cleaning the base metal is always best practice.

This specific product (ED030639) is 0.045 inches in diameter.

CATALOGUE & SPEC SHEETS

Spec Sheet
Safety Data Sheet