PG tube Pyrolytic Graphite tube
Pyrolytic graphite is used in the throat lining of rocket nozzles, antimagnetic spheres for satellite attitude control, electronic tube gates, crucibles for smelting high-purity metals, brushes for voltage regulators, discharge chambers of lasers, insulation materials for high-temperature furnaces and epitaxial wafers for semiconductor production.
Non-toxic and tasteless；
Ultra-high purity(99 .99%)
Good stability, High operating temperature
Good thermal conductivity, small thermal expansion coeffi-
cient, good thermal shock resistance
Good chemical stability, resistant to acids, alkalis, salts and organ-
ic solvents, and does not infiltrate or react with molten metal
Very low outgassing rate
No pores, good air tightness, easy machining
• OLED Evaporation point source crucible;
• Electron beam melting Crucible;
• Ion beam implantation component;
• Plasma etching components;
• Sputtering target;
• Rocket nozzle throat lining;
• Atomic absorption tube;
• PG heater.
| Main Parameters | Numerical | Units | Direction |
| Density | 2.15-2.22 | g/cm3 | - |
| Electrical resistivity | 2×10-4 | Ω·cm | ab |
| 0.6 | Ω·cm | c | |
| Thermal conductivity | 382 | W/m°C | ab |
| 2.8 | W/m°C | c | |
| Coefficient of thermal expansion (20°C) | 0.5 | μm/m-℃ | ab |
| Sublimation temperature | 3650 | ℃ | - |
| Tensile strength | 80 | MPa | ab |
| Bending strength | 130 | MPa | ab |
| 116 | MPa | c | |
| Compressive strength | 80 | MPa | ab |
| Yang-style modulus quan | 20 | GPa | ab |
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