Enlargening volumes of industrial production and requirements after more bold circumstances of work - not only in the engineering, different kind of transport, but also in other spheres of production always more frequently begin to use the devices of the compressed air. One of them is screw type compressors. Screw type compressors is simple design rotor machines of the positive moving, what can operate with greater efficiency on high speeds of rotary rate, and operate in the spacious range of pressures. In foundation of structure of compressor there are two shafts with specially created in the type of spiral for the shafts. The rotors of pump are inferior to influencing of variable forces, which produce the compressed gases and forces of inertia, and moments of rotary also. Requirements for these rotors comparing high, they should be made from quality materials, which provide excellent characteristics in statistical and dynamic pointers of mechanical resistance – strength, hardness, plasticity, should be with good corrosion, warm and wear resistance. The purpose of work - to establish, that not always rotors should be made from regulated expensive materials, but it is possible to use more cheaper materials. Using the modern developed technologies, we can extract for material equivalent properties as regulated. In foundation of article main attention is paid on making of new or improved technologies, to perfect properties of steels of lower quality, which will assure material, which always technological and mechanical dignities would characterize, adjusted for the production of rotors. More detailed this work analyzes changes of steels technological, mechanical properties, using the mechanical strengthening, thermal and thermomechanical processing methods of strengthening, their advantages and failings as well as analyzed depends of mechanical properties if change the form of grain of crystals. Knowing many elements, as example, carbon, nitrogen and other elements, improves technological and mechanical properties of overhead layer of material, in motion of work shallow also analyzes chemical thermal influence, and also the change of properties of surface uses various coverages for rotors. Advantages of more frequently used technologies and failings are also analysed in that work. The rotors of screw type compressors are one of the most responsible details of compressor, and productivity of action depends from them. At the end of article conclusion gives various advices for the improvement of surface of rotors.