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1/8" 3% thoriated tungsten electrodes mauve 7" long 10


Submitter: carly-lara@modularparts.com (Carly Lara)
What Carly Lara is selling: 1/8" 3% thoriated tungsten electrodes mauve 7" long 10
This is New 1/8" 3% THORIATED Tungsten Electrodes (10pc. total) by SEVEN inch long, Color Code MAUVE.
3% Thoriated, MAUVE, AWS Class EWTH-3, DC welding applications. The most common type of electrode used today. Applications: carbon & stainless steel, nickel alloys and titanium.
10 Pack, TT3-7 3% THORIATED Tungsten Color Code MAUVE, are best suited for DC TIG welding applications.
The thermionic emission of tungsten can be improved by alloying it with metal oxides that have very low work functions. As a result, the electrodes are able to handle higher welding currents without failing. Thorium oxide is one such additive. To prevent identification problems with these and other types of tungsten electrodes, they are color coded. Two types of thoriated tungsten electrodes are available. The EWTh-3 and EWTh-4 electrodes contain 3 percent and 4 percent thorium oxide (THO2) called thoria, respectively, evenly dispersed through their entire lengths. Thoriated tungsten electrodes are superior to pure tungsten electrodes in several respects. The thoria provides about 20 percent higher current-carrying capacity, generally longer life, and greater resistance to contamination of the weld. With these electrodes, arc starting is easier, and the arc is more stable than with pure tungsten or Zirconiated tungsten electrodes.
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