Abstract
An investigation has been made into the hydrochloric acid pickling of a plain carbon X65 grade steel and a low alloy P110 steel to determine whether the treatment introduces significant quantities of hydrogen into the steels. For pickling times up to 6 h the hydrogen absorbed by both grades of steel was found to be low, although the P110 steel absorbed more than the X65 steel in a given time. Scaled samples of both grades of steel were found to absorb more hydrogen than the unsealed ones Reasons for these facts are discussed.
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