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The literature about the mold plastering casting structures applied in alloying the casting coating by various alloys was examined. On the basis of the examined literature the main conditions are revealed, which should be observed for the implementation of the alloying process. The data on plastering structures used for the casting molds with various heat conductivity is presented. The influence of such alloying on the structure and property both of the casting surface and the properties of the finished products is shown. The data on a classical set of covering components and on the features of the elements comprising them is also provided. The conditions necessary for the casting surface alloying by the nanopowder of the casting mold covering are described. A number of cases is described when such alloying was applied and was successful. The changes of the casting surface properties are described.