Table 57. Chemical Composition of 1000 Series Aluminum Alloys, Percent by Weight 



Alloy 



Gage 

 (in.) 



Si 



Fe 



Cu 



Mn 



Zn 



Al fl 



1100 



- 



- 



— 



- 



— 



- 



99.0 



1100-0 



- 



b 



b 



0.14 



0.03 



- 



R 



1100-H14 



0.050 



0.14 



0.55 



0.14 



- 



0.06 



R 



1180 



0.050 



0.06 



0.08 



0.002 



0.002 



- 



R 



fl R = remainder. 

 fc Si+ Fe = 0.57 



Table 58. Corrosion Rates and Types of Corrosion of 1000 Series Aluminum Alloys 



Alloy 



Environment 



Exposure 

 (day) 



Depth 

 (ft) 





C 



orrosion 





Source 



Rate 

 (mpy) 



Maximum 



Pit Depth 



(mils) 



Crevice 

 Depth* 



(mils) 



_, b 



Type 



1100-H14 



W 



123 



5,640 



2.0 



39 







P 



INCO(3) 



1100-H14 



S 



123 



5,640 



3.1 



41 







P 



INCO(3) 



1100-H14 



W 



403 



6,780 



4.2 







62 



C(PR) 



INCO(3) 



110OH14 



S 



403 



6,780 



1.3 



62 



62 



C (PR);P (PR) 



INCO (3) 



1100-H14 



W 



751 



5,640 



4.5 







62 



C(PR) 



INCO(3) 



1100-H14 



S 



751 



5,640 



2.0 







62 



C(PR) 



INCO (3) 



110OH14 



W 



1,064 



5,300 



3.0 







62 



C(PR) 



INCO (3) 



1100-H14 



W 



1,064 



5,300 



1.8 



S-P 



S-C 



S-C ; S-P 



CEL (4) 



1100-H14 



S 



1,064 



5,300 



1.0 







62 



C(PR) 



INCO (3) 



1100-H14 



W 



197 



2,340 



5.6 







62 



C(PR) 



INCO (3) 



1100-H14 



w 



197 



2,340 



<0.1 



23 







E;P 



REY(14) 



1100-H14 



s 



197 



2,340 



<0.1 



I 



1 



I-C;I-P 



INCO (3) 



1100-H14 



w 



402 



2,340 



1.6 







62 



C(PR) 



INCO (3) 



1100-H14 



w 



402 



2,370 



0.9 



I 



50 



C(PR);I-P 



CEL (4) 



1100-H14 



s 



402 



2,370 



0.5 



26 



26 



C;P 



INCO (3) 



1100-H14 



s 



402 



2,370 



0.5 



I 



50 



C (PR); IP 



CEL (4) 



1100-H14 



w 



181 



5 



1.4 







S 



S-C 



INCO (3) 



1100-H14 



w 



366 



5 



0.6 



13 



13 



C;P 



INCO (3) 



1180-H14 



w 



402 



2,370 



1.0 



1 



50 



C(PR);I-P 



CEL (4) 



1180 



w 



402 



2,370 



<0.1 



41 







E;S-P 



REY(14) 



1180-H14 



s 



402 



2,370 



0.8 



I 



50 



C (PR); IP 



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. 



Symbols for types of corrosion: 







C = Crevice 



P 



= Pitting 



E = Edge 



PR 



= Perforated 



I = Incipient 



S 



= Severe 



"Numbers refer to references at end of report. 



192 



