The use of Kh12N2 and 15Kh15N2MA corrosion-resistant martensite-ferritic steels with heat resistance up to 550°C is first stage of substitution of expensive austenitic steel. Second stage is development of 12%Cr steels of martensitic class with chemical composition providing martensitic structure. Technological advantages as well as preferences in the physical, chemical and mechanical properties of these steels as compared with the pearlitic and austenitic steels are shown. Third stage of development of heat resistant steel is focussed on improving in corrosion and heat resistance by Cr concentration rise up to 15.4-16% and introduction of Co. Steel with stable phase composition and properties under long-time exploitation heating is a result of fourth stage.