Table 80. Continued. 









Tensile 



Strength 



Yield Strength 



Elongation 





Alloy 



Exposure 

 (day) 



Depth 

 (ft) 













Source 



Original 

 (ksi) 



% Change 



Original 

 (ksi) 



% Change 



Original 

 (%> 



% Change 



7178-T6 



751 



5,640 



88 



-48 



80 



-64 



10 



-58 



CEL (4) 



7178-T6 



751 



5,640 



89 



-90 



65 



- 



11 



-91 



NADC (7) 



7178-T6 



1,064 



5,300 



88 



-4 



80 



-33 



10 



+ 12 



CEL (4) 



7178-T6 



197 



2,340 



88 



-19 



80 



-37 



10 



-52 



CEL (4) 



7178-T6 



197 



2,340 



89 



-17 



65 







11 



-10 



NADC (7) 



7178-T6 



402 



2,370 



88 



-24 



80 



-21 



10 



-80 



CEL (4) 



7178-T6 



402 



2,370 



89 



-58 



65 



" 



11 



-100 



NADC (7) 



' Numbers refer to references at end of report. 

 ^Welded, MDR 7-5 electrode, TIG process. 



Reheat treated to T6 condition after welding. 



Specimens too corroded (exfoliated) to machine into tensile specimens. 

 'Transverse butt weld, 7039 wire, MIG process. 

 ^ Alloy 7075-T6 heated for 8 hours at 350°F, air cooled. 

 ^Properties transverse to the direction of rolling. 



223 



