AWS A5.20 Class E 71T-11
USA E71T-11 is a self shielding flux cored wire for
single or limited multi-pass all-position welds on mild steels used for field construction, erection and fabrication of bridges and shipbuilding where secondary shielding gas is not practical. USA E71T-11 is used to weld mild steels and it finds acceptance
for use in construction, bridges, structural fabrication, and ship building. USA E71T-11 is noted for its smooth, stable arc. full slag coverage, low spatter generation, ease of slag removal and excellent weld bead appearance.
USA E71T-11 is used extensively in the fabrication, erection and repair of structural fabrication of mild steels used in applications where secondary shield gas is not practical. The weld deposits are smooth and have good penetration. The use of USA E71T-11 should be designated for multi-pass welds on plate up to 3/8” (9.5mm) only. Welds above this thickness should not be contemplated, as the weld deposit chemistry does not maintain its mechanical
properties when used for more than three passes.
USA E71T-11 is noted for its smooth arc and minimum spatter. When used for horizontal fillet joints the weld bead has equal leg lengths, flat-faced fillets with fine ripples
TYPICAL WELD METAL CHEMISTRY %
TYPICAL MECHANICAL PROPERTIES OF WELD DEPOSIT
Yield Point (psi)
Tensile Strength (psi)
% Elongation in 2"
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