Which tungsten is identified with a yellow color code?

Which tungsten is identified with a yellow color code?

• A. 1% thoriated
• B. 2% thoriated
• C. Ceriated
• D. Lanthanated

Answer: (A)

Understanding color coding on tungsten electrodes is key. The yellow color code identifies lanthanated tungsten. These electrodes are doped with lanthanum oxide, which provides excellent arc stability and longevity and works well with both AC and DC welding. That’s why you’ll see yellow used for lanthanated tungsten. Other common colors map to different types: pure tungsten is green, thoriated tungsten is red, and ceria/ceria-tungsten is blue. So yellow points specifically to lanthanated tungsten.

Understanding color coding on tungsten electrodes is key. The yellow color code identifies lanthanated tungsten. These electrodes are doped with lanthanum oxide, which provides excellent arc stability and longevity and works well with both AC and DC welding. That’s why you’ll see yellow used for lanthanated tungsten. Other common colors map to different types: pure tungsten is green, thoriated tungsten is red, and ceria/ceria-tungsten is blue. So yellow points specifically to lanthanated tungsten.