Development and Application of Sour Service Pipeline Steel with Low Manganese Content

Abstract:

Comprehensive analysis on the requirement and evaluation result of pipeline steel for sour service is carried out in this paper. So as to provide technical support for the development of the high toughness sour service pipeline steel with low manganese content.The evaluation results shows that the high toughness sour service pipeline steel with low manganese content has excellent comprehensive properties, and the excellent comprehensive mechanical properties and corrosion resistance properties of trial products are achieved through reasonable composition and micro-structure design. The HIC and SSC test result complies with pipeline steel requirement for sour service drafted by major international manufacturers. In order to guarantee the application prospect of the trial products, the weldability of the sour service pipeline steel is analyzed finally, and the test result shows that HAZ softening can be improved when the cooling rate was higher than 20 °C /s.

• Periodical: Materials Science Forum (Volume 944)
• Pages: 808-814
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.944.808
• Online since: January 2019
• Authors: Yan Hua Li*, Qiang Chi, Wei Wei Li, Bin Zou, Ping Xie, Mei Juan Hu, Ming Yang
• Keywords: Corrosion Resistance Properties, Mechanical Properties, Pipeline Steel, Sour Service, Weldability

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