EFFECT OF WET STORAGE STAINING ON SUBSEQUENT ATMOSPHERIC CORROSION OF GALVANIZED IRON SHEETS

Effect of wet storage stains on galvanized steel sheets exposed in the atmosphere for up to 8 years is reported. No significant difference in the appearance of 2, 4, and 8 month wet storage test sheets was found. It was estimated, however, that effects of wet storage might affect ultimate life of the sheets in some environments. Tests involved chromated galvanized sheets exposed to 24 C fog room environment for 2, 4, and 8 months before being placed in various orientations and exposure conditions in the atmosphere. Sulfur dioxide concentrations ranged from 0.01 to 0.135 mg/cu m. Weight losses on exposed sheets were calculated. It was conceded that some sheets probably would have been rejected immediately after exposure to wet fog. After atmospheric exposure, however, the Zn hydroxide coating was converted to Zn carbonate, more or less the same as the layer that might be found on galvanizing exposed normally in the atmosphere. Wet storage conditions produce pitting attack which may, under prologed exposure, result in rust staining.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00941492
• Corporate Authors:

  National Association of Corrosion Engineers

  P.O. Box 1499
  Houston, TX  United States  77001
• Authors:
  • Bird, C E
  • Strauss, F J
• Publication Date: 1976-11

Media Info

• Features: References; Tables;
• Pagination: p. 27-29
• Serial:
  • Materials Performance (MP)
  • Volume: 15
  • Issue Number: 11
  • Publisher: National Association of Corrosion Engineers
  • ISSN: 0094-1492
  • Serial URL: http://www.nace.org/Publications/Materials-Performance/

Subject/Index Terms

• TRT Terms: Corrosion tests; Galvanizing; Moisture content; Pitting; Sheet metal; Steel; Sulfur dioxide
• Uncontrolled Terms: Staining; Wet conditions
• Old TRIS Terms: Atmospheric corrosion tests
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00148693
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 30 1977 12:00AM