The hazards of stress corrosion cracking (SCC)
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Stress corrosion cracking is a common form of failure caused by the environment. DuPont Corporation in the United States analyzed 685 cases of damage to metal pipes and equipment that occurred over a period of 4 years, and found that nearly 60% of these cases were caused by corrosion. Among the damages resulting from corrosion, stress corrosion cracking accounted for 13.7%. According to extensive statistics from various countries, in cases of wet corrosion damage to stainless steel, stress corrosion cracking accounts for as much as 60%, making it the most common type of corrosion-related damage. The frequent occurrence of stress corrosion cracking and the severe damage it causes have drawn people’s attention. Hydrogen sulfide stress corrosion cracking in a elbow of an outlet pipe in a paraffin oil hydrorefining unit
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