Electrochemical measurements on Types 304 and 316L stainless steel were used to assess the corrosivity of white water from alum-acid and alkaline papermaking operations. The passivity of both alloys was more sensitive to the low sulfate alkaline waters in the presence of aggressive anions and other operating conditions as compared to alum-acid waters. Specific process conditions which are required for long-term successful performance of these alloys are described.

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