This work is concerned with the research into the effect of impacts on the course of plastic deformation of 15Kh2MFA steel. The study includes the initial information from the solution of the problem aimed at examining the effect of various doses of neutron radiation on the mechanical properties of this reactor steel in static and impact loading. It contains the data on the effect of various degrees of radiation damage on the static mechanical properties and the results of impact loading tests on nonirradiated 15Kh2MFA steel.