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HYDROGEN EMBRITTLEMENT

A process resulting in a decrease of the toughness or ductility of a metal due to the presence of
atomic hydrogen. [ASM] Hydrogen in the atomic form may enter the steel during manufacturing,
during processes such as welding or electroplating, or as a result of in-service conditions such as
cathodic protection or corrosion to produce deterioration ranging from ductility loss to brittle
failure.


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