Isostatic Graphite
Summary
Isostatic graphite is a kind of fine-grained isotropic graphite produced by cold isostatic molding technology, with good electrical and thermal conductivity, high-temperature strength, small coefficient of thermal expansion, self-lubricating, high-temperature, corrosion-resistant, easy to process, and widely used in the fields of monocrystalline silicon, polysilicon, EDM, continuous casting of metals, vacuum furnaces, sintering, smelting of precious metals, glass, medical treatment, chemical industry, and so on.
Applications
1. Metallurgy, Casting, and Heat Treatment
Vacuum furnaces, inert atmosphere furnaces, heating elements, conductive electrodes and connectors, loading trays, muffle boxes, thermal field liners, and structural components, crucibles, fixtures, molds, etc.; copper, aluminum, and other non-ferrous metal continuous casting crystallizers; hot pressing molds, and so on.
2. Sintering
Sintering molds for cemented carbide cutting tools, diamond tools, and electronic component packaging; sintering molds for glass products; metal sealing welding fixtures, and so on.
3. Electrical and Electrochemical
Electrodes for EDM; fuel cell bipolar plates; electrolytic anodes and cathodes, etc.
4. PV and Semiconductor
Polycrystalline silicon reduction furnace disc, holder, preheater; thermal field components of polycrystalline silicon ingot furnace; PECVD graphite boat pieces and components; CZ monocrystalline silicon furnace heating elements, insulation tubes, guide tubes, crucible components; PVT method SiC long crystal furnace graphite crucible, heating elements, upper covers, etc.
5. Fiber Optic
Furnace core tube, heating element, central tube, muffle tube, and base, etc.
Specifications
| Grade | Bulk Density | Specific Resistance | Flexural Strength | Compressive Strength | Ash (Normal Grade) | Ash (Purified) | Grain Size | Regular Size |
|---|---|---|---|---|---|---|---|---|
| g/cm³ | μΩ.m | MPa | MPa | ppm | ppm | μm | mm | |
| IS-14 | 1.86 | 11~12 | 65 | 135 | 500 | 50 | 5 | 1200*640*270 1600*670*300 |
| IS-41 | 1.78 | 15 | 65 | 130 | 200 | N/A | 10 | 620*520*260 900*570*260 |
| IS-42 | 1.78 | 14 | 65 | 110 | 200 | N/A | 13-15 | 510*310*250 620*520*250 740*740*230 |
*The above values are typical, not guaranteed, other specification and sizes are also available.