Table 15. Continued. 



Alloy 



CDA 



No." 



Environment 



Exposure 



(day) 



Depth 

 (ft) 



Corrosion 

 Rate 



(mpy) 



Type of 

 Corrosion c 



Source 



Ni Brass 

 Ni Brass 



- 



W 

 W 



181 

 366 



5 

 5 



1.1 

 0.9 



U 



U 



INCO (3) 

 INCO (3) 



"Copper Development Association alloy number. 



W = Totally exposed in seawater on sides of structure; S = Exposed in base of structure 

 so that the lower portions of the specimen were embedded in the bottom sediments. 



^Symbols for types of corrosion: 



C = Crevice 



CR = Cratering 



DZ = Dezincification 



ET = Etching 



EX = Extensive 



G = General 



GBSL = General below sediment line 



I = Incipient 



Numbers indicate maximum depth in mils. 



Numbers refer to references at end of report. 

 6 Francis L. LaQue Corrosion Laboratory, INCO, Wrightsville Beach, N.C. 

 ■"At spacer. 

 ^Cast alloy. 



MD 



= Medium 



MO 



= Moderate 



NU 



= Nonuniform 



P 



= Pitting 



S 



= Severe 



SL 



= Slight 



U 



= Uniform 



V 



= Very 



67 



