200 



100 



80 



GO 

 40 



20 



10 



8 



— • & 



3 



O MPY 



• Max. Pit Depth, Mils. 



A Crevice, Corrosion, Depth, Mils.; 



P Perforated 

 P 



• A 



• A I— 



A 



H 



.i 



Days 181 



Depth, Ft. 5 



197 123 



2,500 6,000 



366 



402 403 

 2,500 6,000 



751 

 6,000 



1064 

 6,000 



Figure 26. Corrosion rates, maximum pit depths and crevice corrosion of AISI 

 Type 430 stainless steel in seawater at the surface and at depth. 



85 



