E3 Tungsten Electrodes 3.2mm. SOLD PER EACH. Used for TIG welding. The non-fusing and temperature resistant E3 tungsten electrode, in addition to the torch, the energy source and the inert gas, is a major factor for obtaining optimum results. These electrodes offer excellent ignition characteristics and consistent welding properties. They are universal and suitable for all applications in the whole range of DC and AC welding for non-alloyed and high-alloyed steel, aluminium,titanium, nickel, copper and magnesium alloys. Because of their great ignition properties they are also suitable for automated welding.