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Life Sciences Graphite Grades

Our graphite materials have been a mainstay in the implantable medical device market for over 40 years. The unique tungsten blended material combines the quality of our high-strength premium graphite with the added benefit of being radiopaque. These qualities make our materials the only choice for pyrocarbon-coated substrates used by replacement joint and mechanical heart valve manufacturers around the world.

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  • Process
AXF-5Q10W Graphite
AXF-5Q10W Graphite
AXF-5Q10W Graphite
See specifications for AXF-5Q10W implantable graphite. Graphite with tungsten impregnation suitable for U.S. FDA Class II and III applications.
Apparent Density, g/cm3 (lb/in3)
  • 1.95 (0.070)
 Coefficient of Thermal Expansion, µm/m °C (µin/in °F)
  • 7.7 (4.3)
 Electrical Resistivity, µΩ-cm (µΩ-in)
  • 600 (1,500)
 Flexural Strength, MPa (psi)
  • 75 (11,000)
AXF-5Q Graphite
AXF-5Q Graphite
AXF-5Q Graphite
See specifications for AXF-5Q implantable graphite. Graphite without tungsten impregnation suitable for U.S. FDA Class II and III applications.
Shore Hardness
  • 74
 Apparent Density, g/cm3 (lb/in3)
  • 1.78 (0.064)
 Coefficient of Thermal Expansion, µm/m °C (µin/in °F)
  • 7.9 (4.4)
 Compressive Strength, MPa (psi)
  • 138 (20,000)
AXF-5Q20W Graphite
AXF-5Q20W Graphite
AXF-5Q20W Graphite
See specifications for AXF-5Q20W implantable graphite. Graphite with a higher tungsten impregnation suitable for U.S. FDA Class II and III applications.
Apparent Density, g/cm3 (lb/in3)
  • 2.10 (0.076)
 Coefficient of Thermal Expansion, µm/m °C (µin/in °F)
  • 7.7 (4.3)
 Electrical Resistivity, µΩ-cm (µΩ-in)
  • 610 (1,550)
 Flexural Strength, MPa (psi)
  • 68 (10,000)
Related Product Categories
Premium Graphite Components

Our graphite is tightly controlled to produce materials that have a uniform microstructure and the right balance of strength, grain size and hardness to offer optimum performance for your intended applications.
Graphite Processing Options

Our graphite materials can be purified to less than 5 ppm, densified to reduce open porosity by as much as 80%, or impregnated with resins, oxidation inhibitors or metals. Surface treatments and coatings are available to provide a sealed surface, to improve wear characteristics or to reduce particles.
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