The search continues: graphite or copper – which to choose?

Related Vendors

HASCO Hasenclever GmbH + Co KG

BORIDE Engineered Abrasives

Meusburger Georg GmbH & Co. KG

Poco Graphite, Inc. an Entegris Company

Graphite performs well at a high current density

Copper does not have the ability to handle current density as effectively as graphite; therefore, features on a single copper electrode should be similar in detail. Graphite actually performs very well at a high current density even with complex geometry. For this reason, graphite electrodes provide the ability to design various intricately machined details on the same electrode. For this reason, the number of electrodes required to perform a job can be significantly reduced. With copper, this particular job required over 100 electrodes to complete the task, while graphite required less than 30 (see image on page 50). In addition, the copper electrodes required handwork to remove any burrs caused by the machining process, whereas the graphite electrodes milled smooth and no burr removal was required.

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