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Selection of test methods for intergranular corrosion of NS312 material containers containing chlorine in the medium

2018-06-21View Original

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The company has recently produced a batch of pressure vessels made of NS312 material for use in fluorine chemical industries, and intergranular corrosion tests are required. Since chlorine is a highly oxidizing medium, the 65% nitric acid method was chosen as the testing approach. Can it be replaced with the ferric sulfate-50% sulfuric acid method? I hope experienced colleagues can provide analysis and guidance.

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