Abstract
This project was undertaken to examine reports that low sulphur steels were more prone to hydrogen-induced cracking than steels with higher sulphur contents.
The susceptibility to hydrogen-induced cracking of the root pass and the baseplate was evaluated using the high restraint cracking test developed at the Welding Institute of Canada, using two different edge configurations. The steels used in this study, containing 0.0024 and 0.0109 percent sulphur, were laboratory heats provided by Nippon Steel Corporation. Their compositions were typical of Nb-V. X70 linepipe steels and were essentially of the same nominal composition.
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L51532 Effect of Sulphur on Cold Cracking Susceptibility
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