CORROSION MAP

SETTING THE STANDARDS FOR THE INDUSTRY

The life of any coating is dependent on the local environment, which is often hard to quantify. The Galvanizers Association is responsible for a nationwide scientific survey that links geographic location to the lifespan of a galvanized coating. Coastal areas corrode the coating quicker due to the environment, so having a thicker coating will allow the coating to last longer.
How to use the map
  • Locate your project on the map
  • Match the colour of the square to the key
  • Read off the average background corrosion
    rate in μm per annum
  • Divide the coating thickness by the corrosion rate to obtain the expected minimum life of the galvanized coating, or just use the following table.
  • Download our PDF map here
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