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Raw and Finished Materials by Brian Dureu

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10

Carbon Forms and Fuels

10.1 GRAPHITE

Graphite is a soft, black, hexagonal form of pure carbon that is both found in nature and produced synthetically. It is electrically and somewhat thermally conductive, black in color, and opaque to light. Graphite has a greasy feeling to the fingers due to its lubricating properties, and it smudges easily. One final asset of graphite is its refractory properties, enabling it to withstand temperatures of up to 3000°F (1649°C) for extended periods, and up to 5000°F (2760°C) in the case of arc electrodes.

Natural graphite, found in flake or nearly amorphous forms, is an important material for raising the carbon content of steel in the foundries. Carbon, when introduced to steel, raises its hard-enability, ...

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