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at high temperatures plastic and composite bearings are subject to other problems such as softening , melting , deformation and may extrude out of the bearing area all together. Because the carbon graphite matrix is very strong.it is not subject to the deformation , melting or even softening that can occur with plastic bearings at these elevated temperatures the temperature resistance in an oxidizing atmosphere can be specified as 400o c maximum for g10 bearing qualities.in a non - oxidizing atmosphere the temperature resistance is determined by the final graphitizing treatment of each individual grade ( e.g. Upper application limit for graphite is approximately 3000o c ). Temperature resistance is also affected by various impregantions. In the case of resin impregnation the maximum operating temperature is 180o c for lead impregantion 200o c and antimony impregnation 500o c

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