09/16/2026
Ever wonder where TIG welding came from?
TIG welding was developed in the early 1940s to solve a major challenge: welding reactive metals like aluminum and magnesium. During World War II, aircraft manufacturers needed a cleaner, more controlled way to weld these lightweight materials.
In 1941, Russell Meredith developed a practical welding process using a non-consumable tungsten electrode and helium shielding gas. The process became known as Heliarc and laid the foundation for modern TIG welding.
Over the years, TIG technology continued to evolve with argon shielding gas, water-cooled torches, AC power, high-frequency starts, pulse settings, and digital controls.
Today, TIG welding—officially known as Gas Tungsten Arc Welding (GTAW)—is used for everything from aerospace and automotive work to stainless steel, aluminum, architectural metalwork, and precision fabrication.
What started as a solution for WWII-era aircraft has become one of the most precise and versatile welding processes used today.
From Heliarc to modern TIG — decades of innovation, built around the same fundamental idea: precision
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