Performance :

Forms a clean, balled end when heated and provides good arc stability for AC welding with a balanced or unbalanced squarewave or sine wave..  

Materials Welded:

Aluminum
Magnesium

Pure Tungsten Electrode:

Pure tungsten contains a minimum of 99.5% tungsten with no other alloying elements.
This allows the tip to form a clean, balled end which provides good arc stability on AC. It is generally used in the welding of aluminum and magnesium alloys (AC)