The work was monitored charge uniformity cored wires, which determines the angle of repose and its coefficient of flowability. It has been established that a special blend composition obtained by limiting the content of coarse and fine fractions of components in comparison with the standard composition of the charge of components having the initial granulation, a smaller angle of repose and flowability is large, thus ensuring its uniform in particle size and chemical compositions and improve coating quality. By thermogravimetric analysis and scanning electron microscopy to analyze the influence of additional alloying wires with titanium, silicon and yttrium on heat resistance. It was established that for the alloying of the base alloy Fe-Cr-Al and for spraying coatings introduction of titanium and silicon prevents the formation carbide (Fe,Cr) 7C 3 and aluminum nitride AlN and flow the local high temperature corrosion and yttrium - segregation of sulfur at the interface due to the formation of sulfides Y 2S 3. Unlike base alloy spraying coatings for these effects are achieved with the introduction of the charge cored wires of high amounts of titanium and silicon, which is associated with the conditions of their formation in arc spraying. On the basis of the established principles designed cored wire alloying system Fe-Cr-Al-Ti-Si, for applying spraying coatings. Coating from developed cored wires have heat resistance one level austenitic steels and much higher in comparison with pearlitic and martensitic-ferritic steel, widely used in boiler construction.