edm
drilling graphite
EDM Graphite
edm parts .com is your source for POCO EDM Graphite.
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EDM graphite is available in:
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Standard Plates
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Ground Plates
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Ground Blanks
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Rods
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Taps
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Tubes
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EDM-1
POCO's EDM-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.
Applications
Fabricating electrodes with good detail
Low wear electrodes
High detail roughing electrodes
Molds and dies
Product Specification
Average Particle Size (µ)<5
Flexural Strength (psi)9,700
Compressive Strength (psi)14,200
Hardness (shore)69
Electrical Resistivity (µOhm-in)760
EDM-3
POCO's EDM-3 is an isotropic Ultrafine grain graphite which offers high strength with outstanding wear and fine surface finish characteristics easily machined to thicknesses of .005 or less.
Applications
EDMing of fine detailed electrodes
Punch & die sets
Plastic injection molds
Threading electrodes
Use in aerospace metal cutting
Product Specification
Average Particle Size (µ)<5
Flexural Strength (psi)13,300
Compressive Strength (psi)18,100
Hardness (shore)73
Electrical Resistivity (µOhm-in)615
EDM-4
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.
Applications
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
EDM-C3
POCO's EDM-C3 is a high quality graphite infiltrated with copper, recommended where speed, wear, and surface finish are important. Unequalled for fragile electrodes, many EDM'ers choose this grade to compensate for operator inexperience or where poor flushing conditions exists.
Applications
Fine detailed electrodes where strength is critical
Threading electrodes
Aerospace applications
Plastic injection molds
Machining of carbide
Small hole drilling
Product Specification
Average Particle Size (µ)<5
Flexural Strength (psi)20,300
Compressive Strength (psi)28,350
Hardness (shore)66
Electrical Resistivity (µOhm-in)127
EDM-AF5
POCO's EDM-AF5 is the only graphite electrode material available on the market today with an average particle size of less than one micron. This particle structure gives EDM-AF5 superior strength, provides for fine surface finished (7Ra), gives excellent metal removal rate, and high resistance to wear.
Applications
Fine detailed electrodes for engraving
Hard to machine detail
Delicate and fragile electrodes
Various type threading electrodes
Jobs requiring fine surface finishes
Intricate molds and die
Product Specification
Average Particle Size (µ)<1
Flexural Strength (psi)14,500
Compressive Strength (psi)22,100
Hardness (shore)83
Electrical Resistivity (µOhm-in)850
EDM-200
POCO's EDM-200 is an isotropic Superfine particle 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.
Applications
Structural ribs
Roughing or finishing electrodes
Large featured molds
High strength large electrodes
Product Specification
Average Particle Size (µ)10
Flexural Strength (psi)9,000
Compressive Strength (psi)15,500
Hardness (shore)68
Electrical Resistivity (µOhm-in)580
EDM-C200
POCO's EDM-C200 is a Superfine graphite infiltrated with copper which offers excellent metal removal rates and good wear resistance. EDM-C200 provides improved cutting stability in poor flushing conditions. EDM-C200 is an excellent material for cutting aerospace alloys.
Applications
Aerospace exotic metal cutting
High quality roughing electrode
Structural ribs
Carbide Applications
Product Specification
Average Particle Size (µ)10
Flexural Strength (psi)12,100
Compressive Strength (psi)23,200
Hardness (shore)62
Electrical Resistivity (µOhm-in)114
Grade Chart
The physical properties and characteristics of EDM grades vary by particle size, microstructure consistency, flexural strength, density, and hardness.
Typical Properties of Poco Graphite Grades
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