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Welding wire

E71T-11 self-shielded steel wire

Continuous-wire steel welding without a separate shielding-gas bottle.

Classification
AWS A5.20: E71T-11
Processes
Self-shielded flux core (FCAW-S)
Materials
Mild steel

How to choose it

Choose the exact product and diameter for the joint thickness. Confirm the polarity on its label rather than copying a solid-wire setup.

Limits and product details

Slag, spatter and fumes still need control. The cited NR-211-MP product has diameter-dependent plate-thickness limits; it is not a universal structural wire.

Additional details

Form
Tubular wire with self-shielding flux
External gas
Not required for this self-shielded product
Polarity example
NR-211-MP uses DC electrode negative (DC−)
Thickness example
NR-211-MP at 0.045 in / 1.1 mm or smaller: maximum plate thickness 5/16 in / 7.9 mm
Example source
Lincoln Electric Innershield NR-211-MP

References

Information checked 2026-10-14.

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  1. Product information · Form · External gas · Polarity example · Thickness example · Example sourceOpens the source in a new tab
    ch-delivery.lincolnelectric.comLink checked · 31 Oct
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