EDM-1 Color Code: White

Specifications: EMD-1 is the lowest priced ultrafine grain graphite available from POCO. In addition to providing good wear resistance, speed, and finish, lower electrode fabrication costs are possible when larger electrodes are required.

Avg. Grain Size: 5 Micron
Hardness: 70 Shore
Flex Strength: 7,500 psi
Resistivy: 740 ohm/in.
Maximum Block Size: 4" x 12" x 40"
Method of Manufacture: Molded
 

EDM-2 Color Code: Yellow

Specifications: EDM-2 is an isotropic ultrafine grain graphite with high strength and good wear characteristics recommended where good detail, wear resistance, speed, and finish are desired. EDM-2 is an excellent all purpose grade for super alloys like aluminum.

Avg. Grain Size: 5 Micron
Hardness: 73 Shore
Flex Strength: 10,000 psi
Resistivy: 620 ohm/in.
Maximum Block Size: 4" x 12" x 40"
Method of Manufacture: Molded

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EDM-200 Color Code: Purple

Specifications: EDM-200 is an isotropic superfine grain graphite providing good strength, surface finish, and wear resistance. Moderately priced, EDM-200 Provides excellent repeatability from electrode to electrode and from job to job. Available in large block sizes.

Avg. Grain Size: 10 Micron
Hardness: 64 Shore
Flex Strength: 9,000 psi
Resistivy: 480 ohm/in.
Maximum Block Size: 6" x 24" x 60"
Method of Manufacture: Molded

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EDM-3 Color Code: Red

Specifications: EDM-3 is an isotropic ultrafine grain graphite which offers high strength with outstanding wear and fine surface finish characteristics easily machine to thicknesses of .005 or less.

Avg. Grain Size: 5 Micron
Hardness: 76 Shore
Flex Strength: 13,500 psi
Resistivy: 540 ohm/in.
Maximum Block Size: 4" x 12" x 40"
Method of Manufacture: Molded

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EDM-4 Color Code: Navy

Specifications: POCO's 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 choice for highly detailed wire cut electrodes. EDM-4 is reasonably priced, making it the cost performance leader for most applications requiring a high quality Ultrafine graphite. EDM-4 is the ideal choice for jobs requiring excellent machinability, low electrode wear & smooth surface finishes.

Avg. Grain Size: 4 Micron
Hardness: 76 Shore
Flex Strength: 15,800 psi
Resistivy: 500 ohm/in.
Maximum Block Size: 4" x 12" x 40"
Method of Manufacture: Molded

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EDM-C3 Color Code: Orange

Specifications: EDM-C3 is a high density graphite infiltrated with copper. Recommended where speed, wear, and surface finish are important. Unequalled for fragile electrodes, many EDMers choose this grade to compensate for operator inexperience or where poor flushing conditions exist.

Avg. Grain Size: 5 Micron
Hardness: 67 Shore
Flex Strength: 16,500 psi
Resistivy: 120 ohm/in.
Maximum Block Size: 2" x 8" x 12"
Method of Manufacture: Impregnated

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