TABLE 4 - ANTICORROSION COATINGS FOR STEEL 





Coating 



Coating 



Coating 



Coating 





System 1 



System 2 



System 3 



System 4 







Zinc-Rich 



Epoxy/Primer 





Coal Tar 

 Epoxy System 



Polyamide 

 Epoxy System 



Primer/ 



Polyamide 



or Coal Tar 



Neoprene 



Erosion 



Resisting 



Cost/Ft2 







Epoxy 



Coating 



$0.15 



$0.17 



$0.24 



$1.00 



Lifetime 



5 yr 



5 yr 



6 yr 



6 yr 



Effective- 



Best system 



Best system 



Best system 



Best system 



ness 



for cathodic 



for less than 



for non- 



for resisting 





protection 



properly pre- 



cathodic 



cavitational 







pared surface 



protection 



erosion 



Environ- 



None 



None 



None 



None 



mental 











Impact 











General 



Two-component 



Two-component 



Two-component 



Two-component 



Descrip- 



black paint 



light color 



dark color 



paints green 



tion 





paint 



paint 



epoxy primer 

 and black 

 rubber coating 



Availabil- 



Commercial 



Commercial 



Commercial 



Commercial 



ity 



product 



product 



product 



product 



Application 



Conventional 



Conventional 



Conventional 



Special spray- 





spray 



spray 



spray 



ing technique 

 with conven- 

 tional gun 



TABLE 5 - ANTICORROSION COATINGS FOR ALUMINUM 





Coating System 5 



Coating System 6 



Strontium Chromate Epoxy 



Zinc Chromate Vinyl 





System (DTNSRDC 



System (MIL-P-15328 



Cost/Ft2 



Formula 1112) 



and MIL-P-15930) 



$0.17 



$0.18 



Lifetime 



4 yr 



3 yr 



Effectiveness 



Best system for freshly 



Best system for general 





prepared surface 



use 



Environmental Impact 



Very slight chromate 



Very slight chromate 





escape 



escape 



General Description 



Conventional two- 



Combination of one- and 





component paint 



two component paints 



Availability 



Commercial product 



Commercial product 



Application 



Conventional spray or 

 roller 



Conventional spray 



20 



