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Picture for Qualification Methods of Seamless Tubes for H2 Gas Applications

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Qualification Methods of Seamless Tubes for H2 Gas Applications

Product Number: 51324-20737-SG

Author: Florian Thebault; Vincent Designolle

Publication Date: 2024

$40.00

Sour service is frequently perceived as an appropriate material selection by default for high pressure hydrogen service. So a documented review of sour versus hydrogen gas charging is given, in terms of their respective hydrogen fugacities, hydrogen sources, surface states and crack tip blunting. This global view is susceptible to affect the selection of the test methodology for material qualification. Constant displacement and step loading fracture mechanics tests were performed on an OCTG K55 at room temperature and 100 bar of H2 gas. Results differ with the test method, which was found to be linked to the steepness of the crack growth resistance curve.

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