What color classification represents pure tungsten?

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Multiple Choice

What color classification represents pure tungsten?

Explanation:
Tungsten electrode color coding communicates its material composition. Green marks indicate a 100% tungsten electrode with no alloying elements. This makes it the go-to choice when a clean, non-contaminated arc is needed, such as with AC welding on aluminum, where no added oxides are desired to affect arc stability. The other colors correspond to alloyed tungstens (for example, red for thoriated, blue for lanthanated) and are used to tailor arc characteristics for different materials and welding conditions. So green is the color used to signify pure tungsten.

Tungsten electrode color coding communicates its material composition. Green marks indicate a 100% tungsten electrode with no alloying elements. This makes it the go-to choice when a clean, non-contaminated arc is needed, such as with AC welding on aluminum, where no added oxides are desired to affect arc stability. The other colors correspond to alloyed tungstens (for example, red for thoriated, blue for lanthanated) and are used to tailor arc characteristics for different materials and welding conditions. So green is the color used to signify pure tungsten.

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