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http://dx.doi.org/10.7842/kigas.2011.15.3.067

The Effect of Hydrogen on Mechanical Properties of Gas Pipeline Material: I Tensile property  

Kim, Woo-Sik (R&D Center, KOGAS)
Jang, Jae-Il (Dept. of New Material Engineering, Hanyang University)
Publication Information
Journal of the Korean Institute of Gas / v.15, no.3, 2011 , pp. 67-73 More about this Journal
Abstract
One of the important topics to prepare the up-coming era of so-called ‘hydrogen economy’ is hydrogen transmission. Pipeline is conceivably the most economic way to consistently and safely transport a large amount of hydrogen over a long distance, which may be strongly requested in hydrogen economy era. As a good starting point for the purpose, one might wonder whether conventional API pipeline steels as designed for natural gas transmission can be used as the hydrogen pipeline materials or not. To answer the question, here we performed a series of micro-/nano-indentations together with tensile tests on the hydrogen-charged API X65, X70 and X100 steels having different strength level. In this paper, from the results of tensile tests, the hydrogen effects on the mechanical behavior in the API steels are systematically evaluated.
Keywords
gas pipeline; hydrogen; tensile test; integrity assessment;
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  • Reference
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