The authors explore the possibility of improving the mechanical properties of hot-worked manganese steels alloyed with nominal amounts of molybdenum, tungsten, vanadium, and silicon by quenching performed directly after high-temperature thermomechanical processing and by additional heat treatment. The hot working was performed, using sintered blanks, by hot compression and hot extrusion. Data are given on tensile strength, fatigue limit, impact strength, elongation, and pore structure before and after treatment.