300 

 200 



100 



80 

 60 



40 



20 



10 



a 6 



S 4 



Circular Weld 



Transverse Butt Weld 



»6 



O MPY 





: 



• Max. Pit Depth, Mils. 



& Crevice Corrosion, Depth, Mils. 



P Perforated 



W" 



M^ 



I „ ! 



J 



O 



I- o 

 o — M 



^_ 



A 



Days 181 

 Depth, Ft. 5 



197 

 2,500 



402 

 2,500 



403 

 6,000 



181 

 5 



197 

 2,500 



402 

 2,500 



403 

 6,000 



Figure 30. Corrosion rates, maximum pit depths and crevice corrosion of 

 welded AISI Type 631-RH1050 precipitation hardening stainless 

 steel in seawater at the surface and at depth. 



89 



