100 



80 



60 

 40 



20 



10 



& 4 



§ 2 



• & 



- o 





m 



.£_•_ 



• A 



_ o 



A 



P 



O 



MPY 



Max Pit Depth, Mils. 



Crevice Corrosion, Depth, 

 Mils. 



Perforated 



Io»a1 u "a1 111 



Days 182 197 123 366 402 403 751 1064 



Depth, Ft. 5 2,500 6,000 5 2,500 6,000 6,000 6,000 



Figure 23. Corrosion rates, maximum pit depths and crevice corrosion of AISI 



Type 347 stainless steel in seawater at the surface and at depth. 



82 



