Table 80. Changes in Mechanical Properties of 7000 Series Aluminum Alloys Due to Corrosion 







Depth 



(ft) 



Tensile 



Strength 



Yield Strength 



Elongation 





Alloy 



Exposure 

 (day) 



Original 

 (ksi) 



% Change 



Original 

 (ksi) 



% Change 



Original 

 (%) 



% Change 



,, 17 



Source 



7002-T6 



123 



5,640 



76 



-10 



68 



-12 



12 



-8 



NADC (7) 



7002-T6 fc 



123 



5,640 



33 



-32 



- 



- 



2 



-100 



NADC (7) 



7002-T6 fo,C,rf 



123 



5,640 



- 



-100 



- 



-100 



- 



-100 



NADC (7) 



7002-T6 



403 



6,780 



70 



-62 



58 



-71 



14 



-91 



CEL (4) 



7002-T6 



403 



6,780 



76 



-12 



68 



-15 



12 



-8 



NADC (7) 



7002-T6 



751 



5,640 



76 



-8 



68 



-12 



12 



+ 17 



NADC (7) 



7002-T6 fc,</ 



197 



2,340 



- 



-100 



- 



-100 



- 



-100 



NADC (7) 



7002-T6 



402 



2,370 



70 



-1 



58 







14 







CEL (4) 



7002-T6 



402 



2,370 



76 



-10 



68 



-16 



12 



-14 



NADC (7) 



Alclad 7002-T6 



403 



6,780 



65 



-1 



54 



+ 3 



15 



-14 



CEL (4) 



Alclad 7002-T6 



402 



2,370 



65 



-3 



54 







15 



-10 



CEL (4) 



7039-T6 



123 



5,640 



69 



-4 



60 



-3 



14 



-16 



CEL (4) 



7039-T6 



403 



6,780 



69 



-100 



60 



- 1 00 



14 



-100 



CEL (4) 



7039 T6 rf 



751 



5,640 



69 



-100 



60 



-100 



14 



-100 



CEL (4) 



7039-T6 



197 



2,340 



69 



-2 



60 



-2 



14 



-2 



CEL (4) 



7(>39-T6 d 



402 



2,370 



69 



-100 



60 



-100 



14 



-100 



CEL (4) 



7039-T64 



181 



5 



63 



+ 2 



53 



+ 6 



16 



+ 13 



CEL (4) 



7039-T64* 



181 



5 



63 



+ 17 



5 3 



+4 



16 



+67 



CEL (4) 



7075-T6 



123 



5,640 



83 







76 



+ 1 



11 



-5 



NADC (7) 



7075-T6 



403 



6,780 



83 



-37 



76 



-28 



1 1 



-94 



NADC (7) 



7075-T6 



751 



5,640 



83 



-13 



76 



-9 



11 



-84 



NADC (7) 



7075-T6 



1,064 



5,300 



83 



-13 



76 



-10 



11 



-52 



NADC (7) 



7075-T6 



197 



2,340 



83 



-8 



76 



-4 



11 



-55 



NADC (7) 



7075-T6 



402 



2,370 



83 



-20 



76 



" 



11 



-91 



NADC (7) 



7075-T6A^ 



197 



2,340 



71 



-22 



61 



-18 



10 



-10 



NADC (7) 



7075-T6A^ 



402 



2,370 



71 



+ 7 



61 



-10 



10 



-20 



NADC (7) 



7075-T64 



123 



5,640 



71 



-41 



61 



-31 



10 



-100 



NADC (7) 



7075-T73 



123 



5,640 



72 







62 







10 



+ 10 



NADC (7) 



7075-T73 



403 



6,780 



72 



-11 



62 



-3 



10 



-75 



NADC (7) 



7075-T73 



751 



5,640 



72 



-8 



62 



-8 



10 







NADC (7) 



7075-T73 



197 



2,340 



72 



-3 



62 







10 



+ 10 



NADC (7) 



7075-T73 



402 



2,370 



72 







62 



+9 



10 



-70 



NADC (7) 



Akiad 7075-T6 



123 



5,640 



76 







68 







10 



-10 



NADC (7) 



7079-T6 



123 



5,640 



76 



-66 



67 



-63 



11 



-74 



CEL (4) 



7079-T6 



403 



6,780 



76 



-43 



67 



-52 



11 



-70 



CEL (4) 



7079-T6 rf 



751 



5,640 



76 



-100 



67 



-100 



11 



-100 



CEL (4) 



7079-T6 



197 



2,340 



76 



-17 



67 



-4 



11 



-23 



CEL (4) 



7079T6 



402 



2,370 



76 



-1 



67 







11 



-22 



CEL (4) 



Alclad 7079-T6 



402 



2,370 



78 



-2 



69 



-1 



12 



+4 



CEL (4) 



7178-T6 



123 



5,640 



88 



-19 



80 



-16 



10 



-16 



CEL (4) 



7178-T6 g 



123 



5,640 



89 



-49 



65 



- 



11 



-91 



NADC (7) 



7178-T6 



403 



6,780 



88 



-41 



80 



-41 



10 



-82 



CEL (4) 



7178-T6 



40 3 



6,780 



89 



-56 



65 



- 



11 



-91 



NADC (7) 



222 



