Lincoln Electric Refines Patented STT® Process to Address Thin-Gauge Steel Welding

ClevelandLincoln Electric® has expanded its patented STT® (Surface Tension Transfer) welding process to work with thin-gauge materials. The new AC STT® waveform provides a complete solution for welding thin sheet metal from 24 Ga (0.6mm) and up, while accommodating for poor fit-up and gap conditions.
STT, a modified, short-circuit GMAW process, originally was engineered as a low-spatter solution for root-pass pipe welding. It’s cold enough to bridge gaps but also hot enough to produce a robust back bead.
AC STT combines STT’s low-spatter technology with the control heat-input characteristics of AC GMAW welding – helping to further reduce burn through while maintaining high deposition rates.
AC STT is available as a free waveform upgrade for the Power Wave® S500, R500 and R450 with the Advanced Module.
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Lincoln Electric is the world leader in the design, development and manufacture of arc welding products, robotic arc welding systems, plasma and oxyfuel cutting equipment and has a leading global position in the brazing and soldering alloys market. Headquartered in Cleveland, Ohio, Lincoln has 63 manufacturing locations, including operations and joint ventures in 23 countries and a worldwide network of distributors and sales offices covering more than 160 countries. For more information about Lincoln Electric and its products and services, visit the Company's website at
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