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HPD Graphite

Our HPD graphite splits the difference between highly machinable, softer graphite, and highly durable, harder graphite making it ideal in applications that require fine features and maximum durability.

  • Average particle size of less than 5 microns provides high strength and resistance to damage
  • Fine surface finish creates parts with precision details
  • High hardness reduces wear and increases product lifetime
  • Ability to be post processed to enhance a multitude of material properties to fit your applications

Our graphite grades are available as semi-finished rods, blocks, plates, and fully machined parts. 

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Interested in HPD graphite?

Contact Us

Interested in HPD graphite?

Contact Us

Interested in HPD graphite?

Contact Us

Interested in Post Processing Options?

Learn More

Interested in Post Processing Options?

Learn More

Interested in Post Processing Options?

Learn More

Applications

  • Carbon targets
  • High-density applications
  • Pressure joining and molding applications

Specifications

Particle Size 5 µm (200 µin)
Pore size1 0.8 µm (32 µin)
Coefficient of thermal expansion2 8.1 µm/m°C (4.5 µin/in°F)
Compressive strength 156 MPa (22,600 psi)
Flexural strength3 90 MPa (13,000 psi)
Tensile strength4 63 MPa (9100 psi)
Shore hardness 80
Electrical resistivity 1815 µΩ-cm (715 µΩ-in)
Apparent density 1.76 g/cm3 (0.0636 lb/in3)
Thermal conductivity5 85 W/m-K (50 Btu-ft/hr/ft2°F)
Oxidation threshold6 455° C (850° F)

1Measured using Hg porosimetry method. 2Average for temperature range of RT - 800°C. 3Measured using four-point bend method. 4Estimated at 70% of flexural strength. 5Estimated value. 6Temperature that results in 1% wt. loss in 24 hours. Oxidation threshold increases by approximately 100°C if graphite is purified. Test sample size equals 0.5" x 0.5" x 1.0".

Documentation

Grade Chart

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Industrial Graphite Grades Table
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Brochure

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Graphite Properties and Characteristics
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Manual

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Industrial Material Solutions
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