Table 10. Chemical Composition of Coppers, Percent by Weight 



Alloy 



CDA No. 13 



Cu 



Ni 



Be 



Co 



c h 



Source 



Copper, free 



102 



99.96 



_ 



_ 



_ 



CEL (4) 



Copper, O free 



102 



99.9 



- 



- 



- 



INCO (3) 



Copper, O free 



102 



99.97 



- 



- 



- 



CEL (4) 



Copper, free 



102 



99.9 



- 



- 



- 



MEL (5) 



Be-Cu 



170 



97.06 



- 



2.02 



0.58 



NADC (7) 



Be-Cu 



172 



97.42 



- 



2.02 



0.54 



NADC (7) 



Be-Cu 



172 



97.80 



0.05 



1.90 



0.25 



CEL (4) 



Be-Cu 



175 



97.06 



- 



0.61 



2.4 



NADC (7) 



Be-Cu chain c 



825 



remainder 



- 



2.0 



0.5 



CEL (4) 



'Copper Development Association alloy number. 

 'Numbers refer to references at end of report. 

 : Cast alloy. 



Table 11. Corrosion Rates and Types of Corrosion of Coppers 



Alloy 



CDA No." 



Environment 



Exposure 

 (day) 



Depth 

 (ft) 



Corrosion 

 Rate 

 (mpy) 



Type of 

 Corrosion c 



Source 



Copper, O free 



102 



W 



123 



5,640 



1.6 



U 



CEL (4) 



Copper, O free 



102 



W 



123 



5,640 



1.5 



U 



INCO (3) 



Copper, O free 



102 



S 



123 



5,640 



1.3 



U 



CEL (4) 



Copper, O free 



102 



S 



123 



5,640 



1.5 



u 



INCO (3) 



Copper, O free 



102 



w 



123 



5,640 



1.9 



u 



MEL (5) 



Copper, O free 



102 



w 



403 



6,780 



1.2 



u 



CEL (4) 



Copper, O free 



102 



w 



403 



6,780 



1.3 



u 



INCO (3) 



Copper, O free 



102 



s 



403 



6,780 



1.1 



u 



CEL (4) 



Copper, O free 



102 



s 



403 



6,780 



<0.1 



u 



INCO (3) 



Copper, O free 



102 



w 



751 



5,640 



0.7 



u 



CEL (4) 



Copper, O free 



102 



w 



751 



5,640 



1.0 



u 



INCO (3) 



Copper, O free 



102 



s 



751 



5,640 



0.7 



u 



INCO (3) 



Copper, O free 



102 



w 



751 



5,640 



0.6 



u 



MEL (5) 



Copper, O free 



102 



w 



1,064 



5,300 



0.5 



u 



CEL (4) 



Copper, O free 



102 



w 



1,064 



5,300 



0.5 



u 



INCO (3) 



Copper, O free 



102 



s 



1,064 



5,300 



0.3 



G 



INCO (3) 



Copper, O free 



102 



w 



1,064 



5,300 



0.4 



u 



MEL (5) 



Copper, O free 



102 



w 



197 



2,340 



0.8 



u 



CEL (4) 



Continued 



57 



