If a WPS identifies the filler metal classification as E70T-6, which welding process is specified?

The classification E70T-6 indicates that the filler metal is a flux-cored wire, which corresponds to the FCAW (Flux-Cored Arc Welding) process. This type of filler metal is designed for use in a welding process that utilizes a continuously fed wire electrode that is tubular and filled with flux. In FCAW, the flux within the wire provides shielding from atmospheric contamination, and in some cases, it may offer additional arc stability and influence the weld puddle characteristics.

Understanding the classification system helps clarify this choice further. The 'E' in E70T-6 denotes that it is an electrode, while the '70' indicates a minimum tensile strength of 70,000 psi. The 'T' signifies that it is a tubular wire, and the '-6' indicates that the wire is suitable for use in all-position welding with the ability to either be used with or without shielding gas, depending on the specific type of FCAW used.

While other processes like GTAW (Gas Tungsten Arc Welding), SMAW (Shielded Metal Arc Welding), and SAW (Submerged Arc Welding) are commonly used in various applications, they do not correspond with the E70T-6 designation, as each of these processes employs different