Corrosion Behavior of BG80S Anti-Sulfur Oil Tube Steel in High Temperature High Pressure H₂S/CO₂ Environment

Abstract:

The four-point bending method and weight loss method were used to study respectively the stress corrosion cracking behavior and weightlessness corrosion situation of the baosteel BG80S steel in the simulated field environments. The experimental results shown that BG80S won't occur to stress corrosion cracking when the maximum loading stress is 85% Rt0.5 ; the corrosion rates increase with the rising of temperature which is from 40°C to 80°C under the dynamic and static conditions of the simulated environments; the dynamic corrosion rates are between 1.5558 and 1.7523mm/a and the corrosion rates are 0.4827～1.4078mm/a under the static conditions, both of which belong to a serious corrosion category; the form of corrosion is uniform corrosion under the dynamic conditions; because the corrosion products exist micro defects under the static conditions of 80°C, the experimental samples have had the localized corrosion.

• Periodical: Applied Mechanics and Materials (Volume 151)
• Pages: 23-27
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.151.23
• Online since: January 2012
• Authors: Bin Wang, Jun Ling Zhang, Jiang Hu Bai, Dong Mei Zhou, Li Yang, Kun Shen
• Keywords: BG80S Steel, H₂S/CO₂, High Temperature High-Pressure, Stress Corrosion Cracking (SCC), Weight Loss Corrosion Measurement

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