The microstructure of low-alloy hypereutectoid steels with different carbon content (1.05, 1.28 and 1.78 wt.%) after their heating to temperatures of 1150–1200°C and subsequent cooling at controlled rates is studied. As established, the segregation of particles of secondary cementite along the grain boundaries of former homogeneous austenite during cooling is common to the studied steels. In the inner volumes of austenite grains of steel with 1.05 wt.% carbon, a granular pearlite structure is formed, while, in steel with 1.28 wt.% carbon, a lamellar structure is formed. In steel with a higher carbon content (1.78 wt.%), the decomposition of austenite leads to the formation of a structure with needle-like precipitations of Widmanstätten cementite.The obtained results can be used in the development of optimalmodes of cooling of pearlite grade steels after butt-welding to prevent theformation of a granular pearlite structure with lower strength characteristicsin the thermally affected zones.