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POCO's EDM-4 is our premier offering in the Ultrafine classification. This highly isotropic grade combines extraordinary strength with moderate hardness, yielding superior electrode fabrication characteristics. The consistency of EDM-4 also makes it an excellent material for wire cutting intricate electrodes. EDM-4 is reasonably priced, making it the cost performance leader for most applications requiring a high quality Ultrafine graphite.



EDMing of fine detailed electrodes
Punch & die sets
Plastic injection molds
Threading electrodes
Use in aerospaces metal cutting

Product Specification

Average Particle Size (µ) <4
Flexural Strength (psi) 17,500
Compressive Strength (psi) 21,500
Hardness (shore) 76
Electrical Resistivity (µOhm-in) 500