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

The types of copper available on the market are few

A highly detailed EDM electrode with critical features, extreme tolerance and stringent EDM requirements would entail a more premium graphite electrode to fit the needs of this application. According to Poco Graphite, the types of copper available on the market are few and therefore minimise the ability to match material characteristics to the EDM application, thus limiting optimum performance.

Efficiency at maximum precision

When considering material cost, the common concept is that copper is priced much lower than graphite. This may be true if only the material cost is taken into account. With the wide range of graphite materials available, it is quite possible that some EDM grades are more economical than copper. Even with the more expensive graphite materials, the machining costs often offset any savings that are realised with copper.

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