In the presence of water and hydrogen sulfide (H2S), a kind of metal cracking related to corrosion and tensile stress is called hydrogen sulfide/sulfide stress cracking (SSC). SSC is a kind of hydrogen stress cracking, which is related to metal embrittlement caused by hydrogen atoms generated by acid corrosion on the metal surface. The presence of sulfides promotes the absorption of hydrogen. Atomic hydrogen can diffuse into the metal, reducing ductility and increasing the susceptibility to cracking. High-strength metal materials and hard weld areas are prone to SSC. In oil and natural gas (especially natural gas) long-distance pipelines, the sulfide stress corrosion cracking of high-pressure and high-strength pipelines can cause major safety accidents. Therefore, it is necessary to evaluate the anti-SSC performance of pipeline steel to ensure the safety of the pipeline. Learn more at https://tcalab.alfa-chemistry.com/material-testing/sulfide-stress-cracking-ssc-testing.html​

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