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Pyrolytic graphite highly oriented pyrolytic graphite
- highly oriented pyrolytic graphite
- Artificial carbon centroid valve, bearing, etc. Pyrolytic graphite produced by non fluidized bed is used for throat lining of rocket nozzle, diamagnetic ball for satellite attitude control, electron t
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Highly oriented pyrolytic graphite (HOPG) is a kind of "crystalline" graphite with good crystal structure, strong preferred orientation and high graphitization degree. Because of its good carbon atom structure, it has been widely used as standard samples and key components in scientific research, instrument manufacturing and industrial production.
Thermal conductivity: 1400-1800w / m · K (‖)
8W/m·k（⊥）
Coefficient of thermal expansion: 20 × 10-6 （⊥）
Resistivity: 3.5-4.5 × 10-5Ω/cm （∥）
Highly oriented pyrolytic graphite (HOPG) is divided into three levels: A, B and C. its technical indexes are mainly different in the inlay index:
Inlay degree: Class A: 0.5 °± 0.1 °
Class B: 0.8 °± 0.2 °
