E.D.M. Graphite

Electrical Discharge Machining (EDM), the dominant electrode material displacing copper and copper alloy materials

Advantages of Graphite EDM Electrode

  • Good machinability
  • High resistant to thermal shock
  • Low coefficient of thermal expansion (3X lower than copper)
  • Density 5X lower than copper
  • Provides higher metal removal rate than copper
  • Unique characteristic that the wear ratio tends to decrease as the peak current increases