Galvanizers Association is the source of free information and advice about hot dip galvanizing and the galvanizing industry. Feel free to contact us on +44 (0) 121 355 8838 if you need any assistance on design, specification or advice on performance.
Know your microns It is astonishing to think that a coating, just thicker than a sheet of A4 paper, can protect a steel structure for the better part of one hundred years. Read more
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This map provides data for the atmospheric corrosion rate of hot dip galvanizing. Search for a location and hover over the 10 km grid to obtain the corrosion rate. The map legend can be used to find the average life of an 85 µm coating within the area.
| Corrosion rate key | |||||
| Average Corrosion Rate(µm/year) | 0.5 | 1 | 1.5 | 2 | 2.5 |
| Average Life of 85µm galvanized coating(years) | 170 | 85 | 57 | 43 | 34 |
Average background corrosion rates for zinc. Each grid square is 10km².
