—wmm 



O MPY 



• Max. Pit Depth, Mils. 



A Crevice Corrosion, Depth, Mils. 



P Perforated ■ 



Qi 



\qm&\ 1 q»a ] I c 



& 



- o 



ll^lLAl^-:-! L 1 



Days 182 

 Depth, Ft. 5 



197 

 2,500 



123 

 6,000 



366 

 5 



402 

 2,500 



403 

 6,000 



751 

 6,000 



1064 

 6,000 



Figure 20. Corrosion rates, maximum pit depths and crevice corrosion of AISI 

 Type 321 stainless steel in seawater at the surface and at depth. 



79 



