... equipment to carve the mold. If we using normal copper for spark eletrode, copper eletrode will be consumed fastly, and veracity ... be supplied on request, such asW80Cu20, W90Cu10, Silver tungsten electrode, For any question, please be free to contact us. High thermal ... electrical conductivity. Applications :High Voltage Arc Contacts, Vacuum Contacts, Electrodes for Resistant Welding and Spark Erosion.