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Sour Corrosion

Last updated: May 29, 2020

What Does Sour Corrosion Mean?

Sour corrosion is the degradation and/or rust formation on a metal surface due to the presence of a highly acidic environment containing hydrogen sulfide. Sour corrosion can cause material failure at stress levels less than their normal yield strength.

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Corrosionpedia Explains Sour Corrosion

Sour corrosion is common in the petroleum industry because high concentrations of hydrogen sulfide are a common chemical component of crude oil and refinery operations. Sour corrosion can develop in petroleum storage tanks, pipelines and manifold systems due to periodic commodity stagnation that produces a build-up of hydrogen sulfide on metallic surfaces. The metal then becomes embrittled due to contact with hydrogen sulfide, the resulting oxidation reaction and the loss of electrons.

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CorrosionCorrosion 101Oil and GasType of CorrosionCorrosive ProcessElectrochemical PropertyMetalsCorrosion Prevention FailurePipeline and Underground SystemsEnergy Generation and DistributionCorrosion Failure Pipeline

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