Borysenko А.Ю., Мolchanov Л.С. and Golub Т. 2025. The influence of O, N and H on the structure of the metal base of gray cast iron in castings of piston ring blanks. Scientific Technical journal ‘’Metal Science and Treatment of Metals’’. 31, 3 (Sep. 2025). DOI:https://doi.org/10.15407/mom2025.03.045.