Table 24. (cont'd) 



1. MPY - Mils penetration per year calculated from weight loss. 



2. Sumbols for type of corrosion: 

 C - Crevice 



G - General 



I - Incipient 



NC - No visible corrosion 



P - Pitting 



U - Uniform 



3. Numbers refer to references at end of paper. 



4. Crevice corrosion to 20 mils deep. 



5. Crevice corrosion to 18 mils deep. 



6. 957. corroded. 



7. 1007. corroded. 



8. Perforated, 30 mils. 



9. Crevice corrosion and crater pits to 2 mils deep. 



10. Maximum pit depth 5 mils. 



11. Maximum pit depth 2 mils. 



12. Maximum pit depth 13 mils. 



