Graphite as EDM material

Graphite is not plastically deformable and thus not machinable in the true sense of the word. In the machining process, individual grains are knocked out of the composite in a controlled manner. This leads to an abrasive attack on the cutting surface of the tool and requires a relatively high wear resistance of the cutting material. This effect occurs during dry machining and can be reduced with high cutting speeds. Especially the wear of diamond-coated or PCD tools decreases with increased cutting speed and at a higher feed per tooth, which leads to optimal machining results. At the same time, the increased machining speed further optimises the work result.

Graphite electrodes allow significant time and cost savings. Already during the design phase, different mould elements can be combined into one electrode in order to fully exploit the possibilities of modern and powerful EDM machines. The density is lower than that of copper by a factor of 4. This means that even large electrodes can be handled without any problems and with extreme precision.

We recommend using the appropriate graphite grade for the intended application: