Effect of heat treatment on the structure and the mechanical and technological properties of corrosion-resistant nitrogen-bearing 0Kh16N4AFD steel for high-strength welding constructions of railway engineering

The problems of applying a new nitrogen-alloyed martensitic corrosion-resistant 0Kh16N4AFD steel as a promising material for manufacturing car bodies are considered. The microstructure and properties of the steel after various heat treatments have been studied. It is shown that the steel is not behind 12Kh18N9T steel in the characteristics of ductility and corrosion resistance and significantly exceeds it in the static and cyclic strengths.