The opportunity of an establishment of interrelation between wear resistance and structure of galvanic compositions is investigated. At test for wear resistance the counterbody with the rigid characteristic of a surface is used. It is shown, that the curve of dependence of wear resistance from concentration of particles of a disperse phase in a composition represents a parabola. It is established, that at square-law interpolation of optimum structure on three points of test of a composition depending on loading the size of optimum concentration is average size of optimum concentration of various density of packings of particles of a disperse phase in a deposit.