Interesting facts about Hydrogen in steel

HMelting point -259 °CHydrogen

is a steel parasite because it causes embrittlement through reduction of ductility and necking without increasing yield point and tensile strength. It is the cause of undesirable flaking and promotes the occurrence of ghost lines. Atomic hydrogen occurring during pickling penetrates the steel, forming pitting. Moist hydrogen decarburizes at elevated temperatures.

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