TABLE V 



Ratings for Coated Panels Tested at Mean Tide 





Coating 



Thickness 



(mils) 



Service Rating* 



Numter of Coats and 



3 Years 6 Years 



Coating Description 



Unscribed Scribed Unscribed Scribed 



Wash primer pretreatment 



1 Vinyl Primer 



2 Vinyl A-F 7-5 



Wash primer pretreatment 



1-3 Vinyl Primer 



U05 Vinyl A-F 8 



Wash primer pretreatment 

 1-3 Vinyl Primer 

 1+-8 Vinyl A-F 



Phosphoric acid 



pretreatment 

 1-3 Synthetic Rubber 



1 Synthetic Rubber 



18 



2-250 

 25-35 



10 



10 



10 



10 

 10 



9 

 10 



^See Table VI for rating system notes 



From Alexander, et al (1958] 



TABLE VI 

 Description of Visual Rating System 



Numerical 

 Value 



Condition of Coating and Panel 



10 

 9 



Perfect (no deterioration of any kind) 



Slight deterioration of coating 



Intermediate (between 7 and 9) 



Deterioration evident with a few defects in coating; 

 continued protection of underlying metal; coating 

 considered satisfactory. 



Moderate deterioration, some coating defects, slight 

 corrosion of underlying metal surface. Some surface 

 preparation and repainting necessary for continued 

 protection. Coating considered unsatisfactory. 



From Alexander, et al (1958) 



A-IO 



