What is the AWS classification symbol for tungsten with a red stripe?

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Multiple Choice

What is the AWS classification symbol for tungsten with a red stripe?

Explanation:
Tungsten electrode designations use EWTh-n, where Th means thorium is added to the tungsten. The number n shows roughly how much thorium is in the alloy. The red stripe is the color cue for thoriated tungsten, and the specific number indicates the thorium content. Red stripe with the value corresponding to about 2% thorium gives EWTh-2, which is why the correct choice is the one describing thorated tungsten with roughly 2% thorium. This type offers easier arc starting and good electron emission for DC welding of steels and nickel alloys, though it is mildly radioactive and many shops now use alternatives like lanthanated or cerated tungsten.

Tungsten electrode designations use EWTh-n, where Th means thorium is added to the tungsten. The number n shows roughly how much thorium is in the alloy. The red stripe is the color cue for thoriated tungsten, and the specific number indicates the thorium content. Red stripe with the value corresponding to about 2% thorium gives EWTh-2, which is why the correct choice is the one describing thorated tungsten with roughly 2% thorium. This type offers easier arc starting and good electron emission for DC welding of steels and nickel alloys, though it is mildly radioactive and many shops now use alternatives like lanthanated or cerated tungsten.

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