E3 Purple Tip Composite Tungsten Electrode is also known as three elements of rare earth. It is a non-radiation material. It is good to balance the electron mobility and evaporation rates, making  E3 Purple Tip Composite Tungsten Electrode to maximize their performances. For  E3 Purple Tip Composite Tungsten Electrode, it's easy to start and restart arc. If the welding cycle more than 15 minutes, its life will be last longer. 

  E3 Purple Tip Composite Tungsten Electrode burning significantly better than other tungsten electrodes. As three kinds of doping the oxide mixture in the electrode. It's strict with the production process and the cost of production is more expensive.