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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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