200 



100 

 80 

 60 



40 

 20 



.1 



— o 



E55] foi^ 



• A 



o 



A 



O MPY 



• Max. Pit Depth, Mils. 



"A Crevice Corrosion, 

 Depth, Mils. 

 P Perforated 



O 



& 



lo»d 



o 



Days 

 Depth, Ft. 



197 

 2,500 



123 

 6,000 



398 



402 

 2,500 



403 



6,000 



751 

 6,000 



1064 

 6,000 



Figure 33. Corrosion rates, maximum pit depths and crevice corrosion of 

 AISI Type 635-TH1000 precipitation hardening stainless steel 

 in seawater at the surface and at depth. 



92 



