The presence of hydrogen sulfide (H2S) significantly influences material selection for pipelines because H2S is a highly corrosive gas that can cause several forms of corrosion in pipeline steels, particularly sulfide stress cracking (SSC) and hydrogen induced cracking (HIC). SSC is a form of brittle fracture that occurs in high-strength steels exposed to H2S and tensile stress. HIC is a stepwise cracking mechanism caused by the diffusion of atomic hydrogen into the steel, which then combines to form molecular hydrogen at internal voids, creating pressure that leads to cracking. To mitigate these risks, sev....
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