Graphite Grades


Narrow Your Selection
  • Compressive Strength, kg/cm2 (psi)
  • Flexural Strength, kg/cm2 (psi)
  • Shore Hardenss
  • Process
EDM-AF5® is an Angstofine class of 1 micron grain size EDM graphite. EDM-AF5 is ideal for electrodes requiring very fine details.
Particle Size, µm
  • <1
Compressive Strength, kg/cm2 (psi)
  • 1554 (22100)
Electrical Resistivity, µΩ-m (µΩ-in)
  • 21.6 (850)
Flexural Strength, kg/cm2 (psi)
  • 1019 (14500)
POCO® EDM-4® is an Ultrafine class of 4 micron grain size EDM graphite. This grade is the premier offering in the Ultrafine grain classification.
Particle Size, µm
  • <4
Compressive Strength, kg/cm2 (psi)
  • 1511 (21500)
Electrical Resistivity, µΩ-m (µΩ-in)
  • 3.2 (500)
Flexural Strength, kg/cm2 (psi)
  • 1230 (17500)
This grade is in the isotrophic Ultrafine class of 5 micron grain size EDM graphite. EDM-2® is ideal for electrodes requiring a fine finish.
Particle Size, µm
  • <5
Compressive Strength, kg/cm2 (psi)
  • 1188 (16900)
Electrical Resistivity, µΩ-m (µΩ-in)
  • 16 (620)
Flexural Strength, kg/cm2 (psi)
  • 787 (11200)
Superfine class of 10 micron grain size EDM graphite. Moderately priced and provides excellent repeatability.
Particle Size, µm
  • 10
Compressive Strength, kg/cm2 (psi)
  • 1075 (15500)
Electrical Resistivity, µΩ-m (µΩ-in)
  • 14.7 (580)
Flexural Strength, kg/cm2 (psi)
  • 635 (9000)
This grade is in the isotrophic Ultrafine class of 5 micron grain size EDM graphite. EDM-3® is our most popular grade, offering high strength with outstanding wear.
Particle Size, µm
  • <5
Compressive Strength, kg/cm2 (psi)
  • 1273 (18100)
Electrical Resistivity, µΩ-m (µΩ-in)
  • 15.6 (615)
Flexural Strength, kg/cm2 (psi)
  • 935 (13300)
EDM-C3® is copper impregnated and falls into the ultrafine class of 5 micron grain size EDM graphite. This grade provides improved cutting stability in poor flushing conditions.
Particle Size, µm
  • <5
Compressive Strength, kg/cm2 (psi)
  • 1993 (28350)
Electrical Resistivity, µΩ-m (µΩ-in)
  • 3.2 (127)
Flexural Strength, kg/cm2 (psi)
  • 1427 (20300)
EDM-1® is an Ultrafine class of 5 micron grain size EDM graphite. EDM-1 is the lowest priced Ultrafine graphite available from POCO®.
Particle Size, µm
  • <5
Compressive Strength, kg/cm2 (psi)
  • 998 (14200)
Electrical Resistivity, µΩ-m (µΩ-in)
  • 19.3 (760)
Flexural Strength, kg/cm2 (psi)
  • 682 (9700)
Superfine class of 10 micron grain size EDM graphite infiltrated with copper. Provides improved cutting stability in poor flushing conditions.
Particle Size, µm
  • 10
Compressive Strength, kg/cm2 (psi)
  • 1631 (23200)
Electrical Resistivity, µΩ-m (µΩ-in)
  • 2.9 (114)
Flexural Strength, kg/cm2 (psi)
  • 851 (12100)
If you'd like to add this item to compare, please uncheck one of the other 4 items. If you'd like to add this item to compare, please uncheck one of the other 2 items.