Evaluating a natural gas pipeline steel for blended hydrogen service

An X70 natural gas pipeline steel that is being considered for blended natural gas/hydrogen gas service was evaluated in a high-pressure hydrogen gas environment. Fracture toughness testing and fatigue crack growth rate testing were conducted according to ASTM standards and the results are presented...

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Bibliographic Details
Published in:Journal of natural gas science and engineering 2022-05, Vol.101, p.104529, Article 104529
Main Authors: Martin, May L., Connolly, Matthew, Buck, Zachary N., Bradley, Peter E., Lauria, Damian, Slifka, Andrew J.
Format: Article
Language:English
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Summary:An X70 natural gas pipeline steel that is being considered for blended natural gas/hydrogen gas service was evaluated in a high-pressure hydrogen gas environment. Fracture toughness testing and fatigue crack growth rate testing were conducted according to ASTM standards and the results are presented in the context of ASME B31.12 qualification. While a reduction in fracture toughness was observed, the fracture toughness and fatigue behavior were within acceptable bounds for hydrogen service. •Natural gas pipeline steel considered for hydrogen blending use.•Fracture toughness and fatigue testing conducted in high pressure hydrogen gas.•Mechanical testing results discussed in context of ASME B31.12 standard.•Results fall within acceptable bounds for hydrogen service.
ISSN:1875-5100
DOI:10.1016/j.jngse.2022.104529