Table 55. Stress Corrosion of Miscellaneous Stainless Steels 



Alloy 



Stress 

 (ksi) 



Percent 



Yield 



Strength 



Exposure 



(day) 



Depth 

 (ft) 



Number of 



Specimens 



Exposed 



Number 

 Failed 



Source" 



20 Cb 



16 



35 



123 



5,640 



3 







CEL (4) 



20 Cb 



24 



50 



123 



5,640 



3 







CEL (4) 



20 Cb 



35 



75 



123 



5,640 



3 







CEL (4) 



20 Cb 



24 



50 



403 



6,780 



2 







CEL (4) 



20 Cb 



35 



75 



403 



6,780 



2 







CEL (4) 



20 Cb 



16 



35 



751 



5,640 



3 







CEL (4) 



20 Cb 



24 



50 



751 



5,640 



3 







CEL (4) 



20 Cb 



35 



75 



751 



5,640 



3 







CEL (4) 



20 Cb 



24 



50 



197 



2,340 



3 







CEL (4) 



20 Cb 



35 



75 



197 



2,340 



3 







CEL (4) 



20 Cb 



24 



50 



402 



2,370 



3 







CEL (4) 



20 Cb 



35 



75 



402 



2,370 



3 







CEL (4) 



"Numbers refer to references at end of report. 



Table 56. Changes in Mechanical Properties of Miscellaneous Stainless Steels 



Alloy 



Environment 



Exposure 

 (day) 



Depth 



(ft) 



Tensile Strength 



Yield Strength 



Elongation 



c b 



Source 



Original 



(ksi) 



% Change 



Original 

 (ksi) 



% Change 



Original 



(%) 



% Change 



20 Cb 

 20 Cb 

 20 Cb 

 20 Cb 

 20 Cb 

 20 Cb 

 20 Cb 

 20 Cb 

 20 Cb 

 20 Cb 

 20 Cb 

 20 Cb 



S 

 W 

 S 

 W 

 S 

 S 

 W 

 S 

 W 

 S 

 W 

 W 



123 

 403 

 403 

 751 

 751 

 1,064 

 197 

 197 

 402 

 402 

 181 

 365 



5,640 

 6,780 

 6,780 

 5,640 

 5,640 

 5,300 

 2,340 

 2,340 

 2,370 

 2,370 

 5 

 5 



92 

 92 

 92 

 92 

 92 

 92 

 92 

 92 

 92 

 92 

 92 

 92 



+5 

 +2 

 + 1 

 + 1 

 +2 

 +4 

 -1 

 

 

 +4 

 +2 

 -2 



47 

 47 

 47 

 47 

 47 

 47 

 47 

 47 

 47 

 47 

 47 

 47 



+ 19 

 +4 

 + 1 

 

 +6 

 +9 

 -1 

 + 1 

 -1 



+ 11 

 +5 

 -4 



40 

 40 

 40 

 40 

 40 

 40 

 40 

 40 

 40 

 40 

 40 

 40 



-5 

 -3 

 -2 

 -2 

 -5 

 -3 

 +4 

 -5 

 -7 

 -12 

 -4 

 + 1 



CEL (4) 

 CEL (4) 

 CEL (4) 

 CEL (4) 

 CEL (4) 

 CEL (4) 

 CEL (4) 

 CEL (4) 

 CEL (4) 

 CEL (4) 

 CEL (4) 

 CEL (4) 



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. 



Numbers refer to references at end of report. 



184 



