E71T-5 refers to a specific type of gas-shielded, flux-cored arc welding (FCAW) wire designed for welding carbon and high-tensile steels. It is a basic-type flux cored wire, known for producing welds with excellent quality and good low-temperature toughness.
AWS Classification Breakdown (AWS A5.20)
E: Electrode.
7: Denotes the minimum tensile strength of the deposited weld metal (70,000 psi or 490 MPa).
1: Indicates the welding position(s) the wire can be used in: all positions (flat, horizontal, vertical-up/down, and overhead).
T: Confirms it is a tubular, or flux-cored, electrode.
5: Specifies the usability, which includes:
Flux Type: Basic or alkaline earth metal type flux.
Shielding Gas: Primarily used with 100%
(often designated E71T-5C) or an Argon/
mixture (E71T-5M).
Polarity: Requires direct current electrode positive (DCEP or DC+) polarity.
Key Properties: Produces a stable arc with low spatter, easy-to-remove slag, and radiographically sound welds free from porosity.
Key Characteristics & Applications
Weld Quality: Produces high-quality, tough welds, often specified for critical applications.
Cracking Resistance: Formulated to have high resistance to cracking.
Applications: Widely used in industries requiring high integrity welds, such as: