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Primeweld 71 LT H4

Primeweld 71 LT H4

ESAB Primeweld™ seamless cored wires are a unique line of non-copper-coated wires that utilize an exclusive manufacturing process to produce a high-quality laser-welded seam wire without the need for copper plating. Primeweld wires have very low weld metal diffusible hydrogen levels (typically 3 mL/100g weld metal) and remain low even after exposure to high humidity levels and temperatures. This minimizes the risk of hydrogen-induced cold cracking (HICC) when welding thicker components. Primeweld wires have improved wire stiffness and controlled surface lubrication which provides a soft spatter-free and stable arc with excellent feedability.

Primeweld 71 LT H4 is an all-position wire developed for low and medium carbon steels for use with either 100% CO2 or 75% Ar/25% CO2 shielding gas. Applications include off-shore oil components, shipbuilding and heavy equipment fabrication where excellent low-temperature toughness is required.

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Specifications


Typical Tensile Properties

75% Ar - 25% CO2
Condition Elongation Tensile Strength Yield Strength
As Welded 33 % 78 ksi 69 ksi
100% CO2
Condition Elongation Tensile Strength Yield Strength
As Welded 33 % 74 ksi 64 ksi

Typical Charpy V-Notch Properties

75% Ar - 25% CO2
Condition Impact Value Testing Temperature
As Welded 108 ft-lb -58 °F
As Welded 171 ft-lb -22 °F
100% CO2
Condition Impact Value Testing Temperature
As Welded 70.5 ft-lb -58 °F
As Welded 110 ft-lb -22 °F

Typical Weld Metal Analysis %

PMnMoCSSiVNiCr
0.01 %1.35 %0.01 %0.03 %0.01 %0.22 %0.02 %0.45 %0.03 %

Approvals: ABS; 4Y400SA, H5; DNV-GL; IV Y40MS H5
Classifications: SFA/AWS A5.20; E71T-1C/1M/9C-J/9M-J; Weld Metal; SFA/AWS A5.20; E71T-12C-J/12M-J-H4; Weld Metal; SFA/AWS A5.36; E71T-C1/M21A4-CS2-H4; Weld Metal; JIS Z 3313; YFW-C502R/YFL-C503R; Weld Metal; KS D 7104; YFW-C502R/YFL-C503R; Weld Metal

Approvals are based on factory location. Please contact ESAB for more information.


Alloy Type: C Mn
Welding Current: DC+
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