... High eletrical conductivity, low consumption, Tungsten copper eletrode is one of our main product Material name: tungsten copper eletrodeFormular: W=70%, Cu=30 ... electrical spark erosion carving, When we use hard alloy and queched mold steel for mold, we must ... in spark erosion, we strongly recomand our tungsten copper electrode. More formular tungsten copper electrode will be supplied on request, such ...