The 25Cr2MoVA steel was subjected to various heat treatments. We found that the hardness increased when the quenching temperature was in the range of 870 – 910 °C, and then it decreased for the temperature of 910 – 990 °C. The maximum hardness was 553 HV after quenching from 910 °C. Following quenching from 910°C, the 25Cr2Mo-VA steel was tempered in the temperature range of 560 to 750 °C. With an increase in the tempering temperature, the hardness and tensile strength of the material decreased, while the impact toughness increased; the corrosion resistance increased initially and then decreased. The best heat treatment process for the 25Cr2MoVA steel involved quenching form 910 °C and tempering at 650°C for 1 h, the hardness was 362 HV, the tensile strength reached 1 310 MPa, the impact energy reached 149 J, and the material exhibited the best corrosion resistance.
 H. Devold: Oil and Gas Production Handbook -An Introduction to Oil and Gas Production, ABB ATPA Oil and Gas, Sweden (2006).Search in Google Scholar
 A. Bandivadekar, K. Bodek, L. Cheah, C. Evans, M. Weiss: MIT. LFEE. 2008.Search in Google Scholar
© 2021 Walter de Gruyter GmbH, Berlin/Boston, Germany