OBRABOTKAMETALLOV MATERIAL SCIENCE Vol. 24 No. 1 2022 It was experimentally determined that for metastable austenitic steels, the fracture energy of samples under static bending turned out to be less than under dynamic bending. An increase in the rate of low-temperature deformation of samples prevents the development of phase martensitic transformations in steels. It was established that the obtained values of mechanical properties characteristics make it possible to recommend the studied metastable austenitic steels as a substitute for the widely used austenitic steel 12Cr18Ni10Ti up to a temperature of –196 °C, both for the deformed and for the cast state. References 1. Shokin Yu.I., ed., Moskvichev V.V., Makhutov N.A., Chernyaev A.P., Bukaemskii A.A., Burov A.E., Zyryanov I.A., Kozlov A.G., Koksharov I.I., Krushenko G.G., Lepikhin A.M., Mishin A.S., Moskvicheva L.F., Fedorova E.N., Tsyplyuk A.N. 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