Pure tungsten electrodes (AWS classification EWP) contain 99.50% tungsten, have the highest consumption rate of all electrodes, and typically are less expensive than their alloyed counterparts.
These electrodes form a clean, balled tip when heated and provide great arc stability for AC welding with a balanced wave. Pure tungsten also provides good arc stability for AC sine wave welding, especially on aluminum and magnesium. It is not typically used for DC welding because it does not provide the strong arc starts associated with thoriated or ceriated electrodes.
Tolerances of this Pure wolfram Electrode
Diameter( mm )
1. Pure tungsten electrode provides great arc stability for AC welding with balanced wave. It also provides good arc stability for AC sine wave welding, especially on aluminum, magnesium, their alloy and stainless steel.
2. This electrode has superior features of small steam pressure, low resistance, good electrical conductivity and small thermal expansion and high elastic modulus.