Which of the following impurity that causes rapid intergranular stress – McqOptions

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1.	Which of the following impurity that causes rapid intergranular stress corrosion cracking of sensitized austenitic stainless steels in refinery operations?
A.	Sodium chloride
B.	Naphthenic acid
C.	Hydrogen sulfide
D.	Carbon dioxide
Answer» C. Hydrogen sulfide

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