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• 12:06, 6 September 2022 Admin talk contribs deleted page Pitting resistance equivalent number (content was: "{{Short description|Predictive measurement of stainless steel resistance to localized pitting corrosion}} {{refimprove|date=September 2012}} '''Pitting resistance equivalent number''' ('''PREN''') is a predictive measurement of a stainless steel's resistance to localized pitting corrosion based on its chemical composition. In general: the higher PREN-value, the more resistant is the stainless steel to localized pitting corrosion by chloride. PREN...")