Why is Graphite use in pencil lead
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clay gives the hardness and pallidness (H characteristics), graphite gives the B characteristics to a pencil which can be described as the blackness and softness. The reason why it is selected among the other alternatives of pencil raw material may be that its crystal structure is very suitable to leave mark on a surface and also its abundance and availability are important parameters
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Graphite is used inside pencils. It slips easily off the pencil on to the paper and leaves a black mark.
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