The Surface Tension Transfer (STT) from Lincoln Electric is an arc welding process used on the company's patented inverter-based power source. The STT is designed to significantly reduce spatter and smoke through the use of high-frequency inverter technology with advanced waveform control.

The STT process, which controls the electrode current during the entire gas metal arc welding process, can be used with 100-percent carbon dioxide in combination with electrodes ranging from .030-inch to .045-inch diameter. The technology produces a low-hydrogen weld deposit and makes it easier to achieve a high-quality root weld in all positions.

“The Surface Tension Transfer (STT) welding process is a versatile process that provides good penetration and low heat input control, making it ideal for welding on joints with open rot, gaps or on thin material with no burn through,” says Deanna Postlethwaite, product manager for Lincoln Electric Co. “It reduces spatter and fumes, and because it can be used with 100-percent carbon dioxide or argon shielding gas, as well as larger diameter wires, it can significantly reduce costs.”

VITAL STATS

Verified by Deanna Postlethwaite, product manager for Lincoln Electric Co.
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Electrode diameter: .030- to .045-inch

Available gases for use: 100-percent carbon dioxide or argon shielding gas