Stainless Steels - Atmospheric Corrosion Resistance

Atmospheric Corrosion Resistance of Stainless Steels
Alloy	Finish	% Stained Area	% Rusted	Pit Density (A-537)
201	CR	15	1	7
301	CR	20	3	8
302	CR	5	3	8
304	CR	3	0	8
304L	2B	15	3	9
316	CR	2	0	9
316L	2B	1	0	10
321	2B	10	5	8
347	2B	15	5	8
410	no. 2	100	80	1
430	CR	100	20	8

Reference: Baker, E.A. and Lee, T.S. "Long Term Atmospheric Corrosion Behaviour of Various Grades of Stainless Steels". ASTM Symposium on Degradation of materials in the Atmosphere. Philadelphia, PA. May 12-13, 1986

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