Which material is most commonly used for EDM electrodes due to its excellent wear resistance?

Graphite is the most commonly used material for EDM (Electrical Discharge Machining) electrodes primarily because of its excellent wear resistance and its ability to withstand high temperatures. During the EDM process, the electrode undergoes a series of electrical discharges that erode the material. Graphite maintains its structural integrity and toughness even under these harsh conditions, making it particularly effective for detailed machining tasks.

Additionally, graphite is relatively easy to machine into complex shapes and offers good electrical conductivity, which is essential for efficient EDM operations. It also generates minimal wear on the workpiece, allowing for finer detail and precision in the finished product. While materials like copper and aluminum are used in some EDM applications, graphite's combination of properties makes it the preferred choice for most EDM electrode applications.