edm

drilling graphite

 

EDM Graphite 

edm parts .com is your source for POCO EDM Graphite. 

EDM graphite is available in:
 

  • Standard Plates

  • Ground Plates

  • Ground Blanks

  • Rods

  • Taps

  • 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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