- Graphites
- Isostatic Graphite
- Molded Graphite
- Extruded Graphite
- Vibration Graphite
- Mechanical Carbon Graphite
- Graphite Box for Anode Material
- CNC Machining Graphite Parts
- CNC Machining Graphite Parts
- Graphite Electrode
- Graphite Bipolar Plate
- Carbon Brush/Electric Brush
- High-Purity Graphite Powder for Lithium-Ion Battery Applications
- Graphite Hot Zone for PV
- Calcined Petroleum Coke
- Graphite Products for Glass Industry
- Graphite Crucible
- Graphite Pipe
- Graphite Rod/Block/Plate
- Expanded Graphite Powder – High Conductivity Grade BZ-20
- C-C Composites
- 2D
- 2D Carbon-Carbon Composite Sheets and Plates
- 2.5D Carbon-Carbon Composite Materials
- 3D Carbon-Carbon Composite Materials
- 4D / 5D Carbon-Carbon Composite Materials
- High-Density Carbon-Carbon Composite Materials
- Carbon-Carbon Composite Aircraft Brake Discs
- Carbon-Carbon Composite Heaters & Heating Elements
- Carbon-Carbon Composite Insulation Barrels & Blankets
- Carbon-Carbon Composite Moulds
- Carbon-Carbon Composite Screws & Studs
- Carbon Carbon Composite Crucible
- Carbon Carbon Composite U & L Profiles
- Carbon Carbon Composite Blocks
- Carbon Carbon Composite Racing Brake Discs and Pads
- Carbon Carbon Composite Rods, Tubes, and Pipes
- Carbon Composite Bolts and Nuts
- Carbon Ceramic Composite Materials and Precision Parts
- Pyrolytic Graphite
- Carbon Felt / Graphite Felt
Pyrolytic Graphite Sheets
Pyrolytic graphite sheets are advanced carbon-based materials formed by chemical vapor deposition (CVD) of high-purity hydrocarbon gas onto a graphite substrate at temperatures between 1800–2000 °C under controlled pressure. This process results in an ultra-high crystalline structure with superior anisotropic properties.
Description
Pyrolytic graphite exhibits extremely high purity (impurity content ≤ 0.0002%), high density (approx. 2.20 g/cm³), and outstanding anisotropic thermal, electrical, magnetic, and mechanical performance. It maintains a vacuum of 10 mmHg even at 1800 °C, making it highly suitable for extreme environments.
Typical Properties of Pyrolytic Graphite Sheets:
| Property | Value | Direction |
|---|---|---|
| Grade | Pyrolytic Graphite | – |
| Density | 2.18–2.20 g/cm³ | – |
| Compressive Strength | 83.6 MPa | AB direction |
| Tensile Strength | 75 MPa | AB direction |
| Ash Content | 0.02–0.005% | – |
| Thermal Conductivity | 300–400 W/m·K | AB direction |
| 3.5–5 W/m·K | C direction | |
| Thermal Expansion (C.T.E) | 3.2×10⁻⁶ /℃ | AB direction |
| 17–26×10⁻⁶ /℃ | C direction | |
| Specific Resistance | 2×10⁻⁴ Ω·cm | AB direction |
| 0.6 Ω·cm | C direction | |
| Interlayer Distance (002) | ≤ 3.42 Å | – |
| Air Impermeability (He Transmissivity) | < 10⁻¹⁰ cm² | – |
Available Sizes:
Dia 90×5 mm
90×90×5 mm
90×200×5 mm
Max width: 180 mm
Max length: 800 mm
Max thickness: 10 mm
Applications:
Electronics & Semiconductors: EMI shielding, thermal interface materials
Aerospace: High-temperature insulation, vacuum systems
Medical & Scientific Instruments: Sample holders in high-vacuum environments
Energy Systems: Fuel cells, battery heat dissipation
Metallurgy: Crucible linings, high-purity smelting environments
