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SIGRAFINE® Isostatic graphite is an ultra-fine grain graphite used for applications where the mechanical properties of other fine grain graphites are inadequate. The term "Isostatic Graphite" stands for isostatically molded graphite. This means that the raw material mixture is compressed into rectangular or round blocks in a so called Cold-Isostatic-Press (CIP). Compared to other technologies such as extrusion or vibration molding, this technology can produce the most isotropic form of artificial graphite. In addition, isostatic graphite generally tends to have the smallest grain sizes of all artificial graphites. Typical properties of the material:
0.02 % at 20 °C
1.72 g/cm³ at 20 °C
0.25 cm²/s at 20 °C
Coefficient of thermal expansionα
3.2E-6 1/K at 20 °C
105 W/(m·K) at 20 °C
Metallurgical applications e.g. continuous casting, crucibles, sintering molds, etc.
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This material data has been provided by SGL Carbon.