Table 15. Corrosion of Cast Irons in Sea Water. 



Alloy 



Exp 



osed 



Corrosion 



Rate 



MFY* 1 ) 



Corrosion 

 Type ( 2 ) 



Source^ 3 ) 



Days 



Depth, 

 Feet 



Nickel 



181 

 197 

 123 



5 

 2340 

 5640 



8.5 

 2.2 

 4.4 



U 

 G 

 U 



INC0< 8 > 

 INC0 (0 ^ 

 INCO^ 8 ) 



Ni-Cr #1 



181 

 197 

 123 



5 

 2340 

 5640 



6.7 

 1.9 



4.3 



u 



G 

 U 



INC0 (8 ^ 

 INC0 (8 ) 



Ni-Cr #2 



181 

 197 

 123 



5 

 2340 

 5640 



8.5 

 1.9 

 4.3 



U 

 G 

 U 



INC0 (8 ) 

 INCoW 

 INCoW 



Ductile #1 



181 

 197 

 123 



5 

 2340 

 5640 



10.0 

 1.9 

 3.1 



U 

 G 

 U 



INCO^ 8 ) 

 INCOW 

 INCoW 



Ductile #2 



181 

 197 

 123 



5 

 2340 

 5640 



10.0 

 2.3 

 3.9 



U 

 G 

 U 



INC0 (8 ) 

 INCOW 

 INCOW 



Silicon 



181 

 197 

 123 



5 

 2340 



5640 



<0.1 

 <0.1 

 <0.1 



E 

 NC 

 NC 



INC0 (8 ) 

 INCO (8 ) 

 INCO (8 > 



Si-Mo 



181 

 197 

 123 



5 

 2340 

 5640 



<0.1 

 <0.1 

 <0.1 



NC 

 NC 

 NC 



INCO^ 8 ) 

 INCO^ 8 ) 

 INC0< 8 ) 



Austenitic, Type 1 



181 

 197 

 123 



5 

 2340 

 5640 



4.1 

 0.8 

 1.8 



U 

 G 

 G 



INC0 (8 ^ 

 INCO (8 > 

 INCOW 



Austenitic, Type 2 



181 



197 

 123 



5 

 2340 

 5640 



5.8 

 1.3 

 2.4 



U 

 G 

 G 



INCO^ 8 ) 

 INC0 (8 ) 

 INC0 (8 ) 



Austenitic, Type 3 



181 

 197 

 123 



5 

 2340 

 5640 



5.0 

 0.8 

 1.9 



, U 

 G 

 G 



INC0 (8 ^ 

 INCOW 

 INCoW 



