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TREATMENTS FOR STAINLESS STEEL
CORROSION
Austenitic stainless steels have a characteristic layer of chrome oxide on the surface (created by air or produced artificially) which is very thin and invisible and which protects the material from environmental damage; this resistance mainly depends on the percentage of chrome and nickel.
When the formation of this layer of chrome oxide is prevented, or when this layer is continually destroyed, austenic stainless steels corrode.
To achieve good resistance to corrosion it is necessary to know the types of corrosion possible and their causes, choose the suitable alloys for each application and carefully produce a design. Lastly, appropriate surface treatments need to be performed, such as de-greasing, pickling and polishing.
1) De-greasing
2) Pickling
3) Polishing
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