Composite tungsten heavy metal electrodes are electrodes adding two or two more rare earth oxides into tungsten, which are complementary to better their welding performance. Thus, they become extraordinary in tungsten heavy metal electrodes.

The same with other tungsten heavy metal electrodes, composite tungsten heavy metal electrodes are used in welding. However, they are different in welding industry. Since composite tungsten electrodes have slightness arc, big compression degree, when in the middle and big electric current, the dissolves depth is biggest during welding, they are mainly applied to war industry and aerospace industry. Of course, composite tungsten heavy metal electrodes have other applications.