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Our EDM-AF5® graphite is the premier Angstrofine graphite electrode material available on the market today with an average particle size of less than 1 micron.
Average Particle Size (μ)
  • <1
Flexural Strength (psi)
  • 14,500
Hardness (shore)
  • 83
Electrical Resistivity (μOhm-in)
  • 850
Our Ultrafine EDM-4® graphite combines high strength with moderate hardness, which are ideal for intricate electrodes. The EDM-4 graphite performance characteristics provide excellent cost of ownership.
Average Particle Size (μ)
  • <4
Flexural Strength (psi)
  • 17,500
Hardness (shore)
  • 76
Electrical Resistivity (μOhm-in)
  • 500
EDM-C3® graphite is a premium, Ultrafine grade graphite infiltrated with copper. It is unequaled for the production of fragile electrodes.
Electrical Resistivity (μOhm-in)
  • 127
Hardness (shore)
  • 66
Flexural Strength (psi)
  • 20,300
Average Particle Size (μ)
  • <5
EDM-3® graphite is the most preferred Ultrafine graphite grade and the proven industry standard.
Average Particle Size (μ)
  • <5
Flexural Strength (psi)
  • 13,300
Hardness (shore)
  • 73
Electrical Resistivity (μOhm-in)
  • 615
EDM-2® graphite is an Ultrafine grade that displays high strength and good wear characteristics.
Average Particle Size (μ)
  • <5
Flexural Strength (psi)
  • 11,200
Hardness (shore)
  • 71
Electrical Resistivity (μOhm-in)
  • 620
EDM-1® graphite is an Ultrafine graphite that provides good wear, speed, and finish.
Average Particle Size (μ)
  • <5
Flexural Strength (psi)
  • 9,700
Hardness (shore)
  • 69
Electrical Resistivity (μOhm-in)
  • 760
EDM-C200® graphite is a Superfine grade infiltrated with copper, ideal for improving cutting stability in conditions with poor flushing.
Average Particle Size (μ)
  • 10
Flexural Strength (psi)
  • 12,100
Hardness (shore)
  • 62
Electrical Resistivity (μOhm-in)
  • 114
GLASSMATE®-HT graphite is designed for applications with temperatures up to 600°C.
Average Particle Size (μ)
  • 5
Flexural Strength (psi)
  • 11,800
Hardness (shore)
  • 74
Oxidation Threshold (°F °C)
  • 1,125/607
GLASSMATE®-XL graphite is our strongest material, developed to provide maximum durability, reduced porosity, and improved surface quality.
Average Particle Size (μ)
  • 1
Flexural Strength (psi)
  • 15,250
Hardness (shore)
  • 88
Oxidation Threshold (°F °C)
  • 842/450
GLASSMATE®-SR graphite is an ideal insert material for thick, bead transfer applications, and an economical choice for short production runs.
Average Particle Size (μ)
  • 10
Flexural Strength (psi)
  • 8,400
Hardness (shore)
  • 68
Oxidation Threshold (°F °C)
  • 860/460
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