Mathematical modelling of composite materials properties: specific electric resistance, apparent density, bending strength and hardness by using optimum central imposition plan multifactors in which there is a method for planning of experiments, based on a simultaneous effect of dl variable factors: copper, binder, compaction pressure and sintering temperature on composite properties within each experiment point. The material inspected was compacted and sintered, after mixing and blending, in the protective DA atmosphere. Dimensional changes were also performed and discussed. The results have show that, based upon the mathematical models of composite materials properties, it is possible to predict the final properties within the field, which is defied by lower and upper intervals as well as to optimise the properties of the composites copper-graphite.
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