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The most common metal used in TIG welding, tungsten was once available in pure form only. It now comes in numerous types with additives such as lanthanum to increase electrode performance capabilities. If you’re unsure which tungsten is right for your project, review these options and talk to your local supplier.

What Tungsten Product to Choose 

Pure Tungsten (Green Color Code)

Comprised of 99.50% tungsten, pure tungsten is the least expensive and features the highest consumption rate. Its electrodes create a clean, balled tip under heat to provide excellent arc stability for AC welding projects, especially those using aluminum or magnesium. If yours is a DC work, use ceriated or thoriated tungsten to prevent arc formation issues.

Zirconiated (Brown)

This selection contains 0.15 to 0.40% zirconium. Zirconiated tungsten resists contamination and creates a balled tip that makes it perfect for AC welding. It also creates a highly-stable arc with little risk of tungsten “spitting.”

Ceriated (Orange)

weldingCeriated options feature at least 97.30% tungsten as well as 1.80 to 2.20% cerium. The versatile product applies to AC as well as DC welding projects. Still, it’s best for DC tasks involving carbon and stainless steel due to electrode performance levels. Low current settings provide better results because high amperages cause quick oxide migration around the tip, resulting in heat-related oxide removal.  

Thoriated (Red)

Made of 1.70 to 2.20% thorium, this long-lasting electrode works for AC welding projects only but is easy to use relative to other options. Thorium enhances electrodes’ electron emissions, resulting in less weld contamination and more even distribution. It subsequently performs well if you’re working with thinner steels.

Rare Earth (Gray)

Rare earth electrodes feature undefined additives of rare-earth oxides or contain hybrid oxide combinations. Manufacturing labels let you know how much and which additive the rare earth product includes. These options last longer than thoriated versions and create stable AC and DC arcs.

Lanthanated (Gold)

This kind contains 1.30 to 1.70% lanthanum. Characteristics include low burnoff rate, quality arc starting abilities and stability, and reignition properties. It applies to AC and DC welding, especially projects requiring AC or DC electrode negatives with pointed ends.

 

Whether your TIG welding project is professional or personal, find everything you need for success at Wayne Oxygen & Welding Supply. The welding supply company has served the region since 1959 and features three convenient locations in Waynesboro, Harrisonburg, and Charlottesville, VA. They offer products from Lincoln Electric Company® and Miller Electric Manufacturing®, among other top brands. Call (540) 942-4145 today to discuss your needs or review services online. Get more welding tips on Facebook.

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