Experimental data on strain resistance of 18ХMФБ and 18Х3MФБ steels at 1000 and 1150 С for strain rates of 0.05, 0.5 and 5 s-1 are presented. The experimental procedure and data processing are described. The obtained strain resistance curves may be used for theoretical studies and the simulation of high-temperature deformation with the aim of designing technologies and equipment for the production of pump-compressor pipes.