Session: Gaseous Hydrogen Embrittlement (Part I of II)
Fracture Toughness and Fatigue Crack Growth Rate of Pipeline Steel in Industrial Hydrogen Environments (C2026-00391)
Tuesday, March 17, 2026
11:30 AM - 12:00 PM Central
Location: 381 AB
Earn .5 PDH
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Feng Gui, Angeire Huggins, Luke Hollis, Mark Robinson
There has been a strong push to facilitate industrial decarbonization through the use of fuel switching from natural gas to hydrogen via hydrogen transportation pipeline networks. Therefore, it is important to understand the fracture properties and fatigue crack growth rates of line pipe steels in hydrogen. With such information, informed decisions can then be made with respect to the feasibility of using pipelines in a large scale network. In this work, efforts were made to evaluate the fracture toughness of weld centerline and heat affect zone samples from a seam weld pipe in pure hydrogen environment and hydrogen containing moisture and trace amount of H2S, replicating green and blue hydrogen environments. Hydrogen flux tests were performed to help understand the difference in the toughness values obtained in the tested environments. Additionally, fatigue crack growth rate tests were performed to understand the impact of hydrogen on fatigue crack growth rate. The obtained information is expected to be used as the inputs to assess the feasibility of a large scale industrial pipeline network for hydrogen transmission.
