Table 21. Corrosion of Titanium Alloys in Sea Water. 



Alloy 



Exposure 



Corrosion 

 Rate 

 MPy(l) 



Corrosion 

 Type( 2 ) 



SourceO) 



Days 



Depth, 

 Feet 



Titanium 



181 

 197 

 123 



5 

 2340 

 5640 



<0.1 

 ^0.1 

 <0.1 



NC 

 NC 

 NC 



INCO (8) 

 INCOW 

 INC0 (8 > 



75A 



181 

 197 

 123 



5 

 2340 

 5640 



0.0 

 0.0 

 0.0 



NC 

 NC 

 NC 



NCEL 

 NCEL 

 NCEL 



75A Circular 

 weld 

 75A, Butt weld 



181 

 181 



5 

 5 



0.0 

 0.0 



NC 



NC 



NCEL 

 NCEL 



Ti-0.15 Pd, 

 Circular weld 



181 



5 



0.0 



NC 



NCEL 



Ti-0.15 Pd, 

 Butt weld 



181 



5 



0.0 



NC 



NCEL 



5A1-2.5 Sn, 

 Circular weld 



181 

 197 

 123 



5 

 2340 

 5640 



0.0 

 0.0 

 0.0 



NC 

 NC 

 NC 



NCEL 

 NCEL 

 NCEL 



5A1.2.5 Sn, 

 Butt weld 



181 

 197 

 123 



5 

 2340 

 5640 



0.0 

 0.0 

 0.0 



NC 

 NC 

 NC 



NCEL 

 NCEL 

 NCEL 



6A1-4V 



181 

 197 

 123 



5 



2340 

 5640 



0.0 

 0.0 

 0.0 



NC 

 NC 

 NC 



NCEL 

 NCEL 

 NCEL 



6A1-4V, Circular 

 weld 



181 

 197 

 123 



5 

 2340 

 5640 



0.0 

 0.0 

 0.0 



NC 

 NC 

 NC 



NCEL 

 NCEL 

 NCEL 



6A1-4V, Butt 

 weld 



181 

 197 

 123 



5 

 2340 

 5640 



0.0 

 0.0 

 0.0 



NC 

 NC 

 NC 



NCEL 

 NCEL 

 NCEL 



7Al-2CB-lTa, 

 Circular weld 



7Al-2CB,lTa, 

 Butt weld 



181 



181 



5 



5 



0.0 

 0.0 



NC 



NC 



NCEL 

 NCEL 



13V-llCr-3Al, 

 Circular weld 



181 

 197 

 123 



5 

 2340 

 5640 



0.0 



0.0 

 0.0 



sccW 



NC 

 NC 



NCEL 

 NCEL 

 NCEL 



13V-llCr-3Al, 

 Butt weld 



181 

 197 

 123 



5 

 2340 

 5640 



0.0 

 0.0 

 0.0 



NC 

 NC 



NC 



NCEL 

 NCEL 



NCEL 



MPY - Mils penetration per year calculated from weight loss. 



Symbols signify types of corrosion: 



NC - No visible corrosion 



SCC - Stress corrosion cracking 



Numbers refer to references at end of paper. 



Stress corrosion cracks, radially across unrelieved circular 



weld bead. 



