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E71T-11 Gasless

AWS A5.20 Class E 71T-11

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. E71T-11 is used to weld mild steels and it finds acceptance
for use in construction, bridges, structural fabrication, and shipbuilding. E71T-11 is noted for its smooth, stable arc. full slag coverage, low spatter generation, ease of slag removal, and excellent weld bead appearance.

Applications:

E71T-11 is used extensively in the fabrication, erection, and repair of structural fabrication of mild steel used in applications where secondary shield gas is not practical. The weld deposits are smooth and have good penetration. The use of  E71T-11 should be designated for multi-pass welds on plates 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. 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 %

C

0.10

Mn

1.55

Si

0.10

Al

1.2

P

0.016

S

0.006

TYPICAL MECHANICAL PROPERTIES OF WELD DEPOSIT
(as welded)

Yield Point (psi)

72,000 psi

Tensile Strength (psi)

77,000 psi

% Elongation in 2"

22%

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