WW(Pure) Tungsten

Class: EWP
AWS: A5.12

Pure Tungsten (EWP) = minimum of 99.5 percent tungsten Contains no intentional alloying elements

Pure tungsten electrodes are used mainly with AC for welding aluminum and magnesium alloys. Can use DC, but does not provide arc initiation and arc stability as does the thoriated, ceriated, or lanthanated electrodes