What is Rouging?

Rouging is a type of corrosion that occurs in some closed water systems made of stainless steel e.g. sanitary water.


There are various theories as to why rouging occurs. The most likely theory is that the passive layer cannot be re-formed if it is worn away in oxygen-poor water. In three different case studies, on three industrial water systems, it has been shown that rouging can be remedied by electropolishing.


Feel free to read Calamo’s Report on Corrosion Properties of Electropolished Stainless Steel, which you can find here.


If you want to know more about how electropolishing can improve corrosion resistance, please contact us at sales@calamo.se.