- Author
-
Porter, W. C.
- Title
- Painting Steel.
- Coporate
- National Bureau of Standards, Washington, DC
- Report
-
BMS 102
October 16, 1944
14 p.
- Keywords
-
steels
|
paints
|
exposure
|
tests
|
corrosion
|
durability
|
synthetic resins
- Abstract
- More than 60 priming paints for plain and galvanized steel surfaces were tested. Because some of these primings were duplicates or near duplicates and others were considered unsuitable, only 41 have been selected for this report. Accelerated laboratory and outdoor exposure tests were employed to determine the relative protective value of these primings when applied to treated and untreated galvanized and plain steel panels. Particularly effective protection against corrosion was observed when primings of the synthetic resin zinc chromate type were used over a phosphate-treated surface. Special attention was given to the effect of pretreating new galvanized steel before painting. More than 2,000 galvanized and plain steel panels were prepared for exposure in the various tests. The relative durability to outdoor exposure of 15 topcoat paints is also discussed.