Footnotes for Figtires 11a, lib and lie 



ij Vinyl system is still protecting the steel very well, but the primer 

 and topcoat have lost adhesion and can be peeled from panel. Removed 

 from test . 



2j Epoxy-phenolic. 



3./ TFE (Tetrafluoroethylene) , System 110, is System 109 with the TFE 

 emulsion finish. 



hj Panel was lost. 



5_/ Saran is not actually a vinyl, but is included in this group since its 

 properties are similar to those of a vinyl. 



GJ The letters designate different surfaces over which the coatings were 

 applied. S = bare sandblasted steel; P = pretreatment primer. Formula 

 117; Z = flame-sprayed zinc; A = flame-sprayed aluminum. 



7./ Coatings in this group applied over bare steel and Formula 117 are 



also included under their particular generic types and are shown here 

 for purposes of comparison. 



Notes: 1. The letters a (atmospheric), b (tidal) and c (immersed) above 

 the bar graph indicate the zone in which the coating failed. 



2. Increased concentration of horizontal lines in the bar graphs 

 indicates increased deterioration of coating. Solid black 

 areas indicate complete failure. 



27 



