3le 6. Corrosion of Copper Alloys in Sea Water (Cont'd) 



Alloy 



CDA Not 1 ) 



Expo 



sure 



Corrosion 

 Rate 



Corrosion 

 Type (3) 



Source^) 



Days 



Depth, 

 Feet 



Ni-Vee Bronze C 



. 



181 



5 



1.8 



U 



INCOW 

 INCOW 







197 



2340 



0.8 



U 







123 



5640 



0.8 



u 



INCOW 



Cu-Ni, 90-10 



706 



181 



5 



1.1 



NU 



NCEL 

 INCOW 







181 



5 



0.9 



U 







197 



2340 



0.8 



U 



NCEL 







197 



2340 



0.8 



U 



INCOW 







123 



5640 



1.6 



u 



NCEL 







123 



5640 



0.8 



u 



INCOW 



Cu-Ni, 90-10, Cast 



- 



181 



5 



1.1 



u 



INCOW 



Cu-Ni, 80-20 



710 



181 



5 



2.8 



G 



INCOW 







197 



2340 



0.7 



U 



NCEL 







197 



2340 



1.1 



u 



INCOW 







123 



5640 



1.2 



u 



INCOW 







123 



5640 



1.9 



u 



INCOW 



Cu-Ni, 70-30, 0.5 Fe 



715 



181 



181 



5 

 5 



0.5 

 0.5 



u 



G 



NCEL 

 INCOW 







197 



2340 



' 0.7 



U 



NCEL 







197 



2340 



0.9 



u 



INCOW 







123 



5640 



1.2 



u 



NCEL 







123 



5640 



1.3 



u 



INCOW 



Cu-Ni, 70-30, 5.0 Fe 



716 



181 



5 



0.8 



IP,C< 10 > 



NCEL 







197 



2340 



0.1 



u 



NCEL 







123 



5640 



0.2 



u 



NCEL 



Cu-Ni, 55-45 



- 



181 

 197 



5 

 2340 



1.8 

 0.8 



u 



u 



INCOW 

 INCO^ 8 ' 







123 



5640 



0.7 



u 



INCOW 



Nickel-Silver 



752 



181 



5 



1.1 



u 



INCOW 

 INCOW 







197 



2340 



1.0 



u 







123 



5640 



2.0 



u 



INCOW 



Cu-Ni-Zn-pb 





181 



5 



1.0 



u 



INCOW 

 INCoW 







197 



2340 



0.5 



u 







123 



5640 



0.9 



V 



INCOW 



Copper Development Association Number. 



MPY - mils penetration per year, calculated from weight loss. 



Type of corrosion: 

 C - crevice 



DA - dealuminification NU - non-uniform 



DZ - dezincification P - pitting 



ET - etched S - severe 



G - general SL - slight 



I - Incipient U - uniform 



MO - moderate V - very 



Numbers refer to references at end of paper. 



Crevice corrosion to 5 mils maximum pit depth 22 mils. 



Maximum pit depth 10 mils average 2.3 mils. 



Maximum pit depth 4 mils. 



Crevice corrosion to 8 mils. 



Maximum pit depth 7 mils. 



Crevice corrosion to 5 mils. 



