Corrosion degradation of pipeline steels with different strength grades


  • O.I. Zvirko


corrosion resistance, degradation, electrochemical properties, gas pipeline, operation.


Ukrainian gas mains steels, taking into account their age, are subjected to aging and degradation, which leads to
deterioration of their properties, especially mechanical ones. Degradation of mechanical properties of steels is intensified by
corrosion in the course of which hydrogen evolves and is absorbed by metal, so the metal becomes embrittled.
The aim of this work is to define susceptibility of pipeline steels with different strength grades to corrosion degradation
during their long-term service. The comparative studies of corrosion and electrochemical behaviour of low alloyed gas pipeline
steels with different strength grades in NS4 aqueous solution, simulating soil environment, has been carried out. Pipeline steels
with three strength grades in different states – in the as-received state and after long-term operation have been investigated. The
influence of long-term operation on corrosion and electrochemical properties of steels has been analysed. It has been found that
the 17H1S steel (steel is equivalent to X52 strength grade) is characterized by the lowest corrosion resistance among the studied
steels, and the highest corrosion resistance is typical for the X70 steel in both studied states. Corrosion and electrochemical
characteristics of pipelines steels with different strength grades in the NS4 environment have been significantly deteriorated due
to long-term service. It has been found out that degree of corrosion degradation caused by long-term operation of gas mains is the
highest for the high strength X70 steel. Electrochemical activation of pipeline steels caused by their long-term service comes out
in an increase of cathode and anode processes intensity, increase of corrosion current density, decrease of polarization resistance
and in a shift of corrosion potential values towards more negative ones for degraded steels compared with steels in the initial


Download data is not yet available.


[1] Kryzhanivskyi, YeI & Nykyforchyn, HM 2012,
Koroziino-vodneva dehradatsiia naftovykh i hazovykh
truboprovodiv ta yii zapobihannia: nauk.-tekhn. posibnyk u 3-
kh tomakh. – T. 3: Dehradatsiia hazoprovodiv ta yii
zapobihannia, Ivano-Frankivskyi natsionalnyi tekhnichnyi
universytet nafty i hazu, Ivano-Frankivsk.
[2] Polyakov, VN 1996, ‘Catastrophes of large diameter
pipelines: the role of hydrogen fields’ in Hydrogen effects in
materials, eds AW Thompson & NR Moody, John Wiley &
Sons, Inc., Hoboken, New Jersey, USA, pp. 991–1000.
[3] Tsyrul’nyk, OT, Slobodyan, ZV, Zvirko, OI, Hredil,
MI, Nykyforchyn, HM & Gabetta, D 2008, ‘Influence of
operation of Kh52 steel on corrosion processes in a model
solution of gas condensate’, Materials Science, vol. 44, no. 5,
pp. 619–629.
[4] Krasowsky, AY, Dolgiy, AA & Torop, VM 2001,
‘Charpy testing to estimate pipeline steel degradation after 30
years of operation’, Proceedings of Charpy Centary
Conference, Poitiers, vol. 1, pp. 489–495.
[5] Nykyforchyn, HM, Kurzydlowski, K-J & Lunarska,
E 2008, ‘Hydrogen degradation of steels under long-term inservice
conditions’ in Environment-induced cracking of
materials. Prediction, industrial developments and evaluations,
eds SA Shipilov, RH Jones, J-M Olive & RB Rebak, Elsevier,
Amsterdam, vol. 2, pp. 349–361.
[6] Nykyforchyn, HM, Tsyrul'nyk, OT, Petryna, DYu &
Hredil', MI 2009, ‘Degradation of steels used in gas main
pipelines during their 40-year operation’, Strength of
Materials, vol. 41, no. 5, pp. 501–505.
[7] Maruschak, PO, Danyliuk, IM, Bishchak, RT &
Vuherer, T 2014, ‘Low temperature impact toughness of the
main gas pipeline steel after long-term degradation’, Central
European Journal of Engineering, vol. 4, no. 4, pp. 408–415.
[8] Elboujdaini, M, Wang, Y & Revie, R 2000,
‘Initiation of stress corrosion cracking on X65 line pipe steels
in near-neutral pH environment’, Proceedings of the
International Pipeline Conference ASME 2000, Calgary,
Canada, vol. 2, pp. 967–985.
[9] Lu, B & Luo, J 2006, ‘Relationship between yield
strength and near-neutral pH stress corrosion cracking
resistance of pipeline steels – An effect of microstructure’,
Corrosion, vol. 62, no. 2, pp. 129–140.
[10] Voloshyn, VА, Zvirko, ОІ & Sydor, PYa 2015,
‘Influence of the compositions of neutral soil media on the
corrosion cracking of pipe steel’, Materials Science, vol. 50,
no. 5, pp. 671–675.
[11] Hagarova, M, Cervova, J & Vojtko, M 2015,
‘Corrosion Degradation of Steel Pipes in Indirect Cooling
Circuit of Gas Cleaning’, Materials Science Forum, no. 811,
pp. 41–48.
[12] Zvirko, OI, Mytsyk, AB, Tsyrulnyk, OT, Gabetta,
G & Nykyforchyn HM 2016, ‘Corrosion degradation of steel
of long-term operated gas pipeline elbow with large-scale
delamination’, Phisical-chemical mechanics of materials, vol.
52, no. 6, pp. 104–108. (in Ukrainian).
[13] Shraier, LL 1981, Corrosion: digest, Metallurgy,
Moscow. (in Russian).




How to Cite

Zvirko, O. (2018). Corrosion degradation of pipeline steels with different strength grades. JOURNAL OF HYDROCARBON POWER ENGINEERING, 4(1), 38–42. Retrieved from