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Is it possible to compare the resistance to chloride attack of several materials of construction?
The Pitting Resistance Equivalent Index (PRE) can be used for such a comparison if the chemical make-up of each material is known.
The formula for the PRE is PRE % Cr + (3.3 x % Mo) + (30 x % N).
The formula for the PRE is PRE % Cr + (3.3 x % Mo) + (30 x % N).