Disclaimer: The corrosion maps were constructed from past field atmosheric exposure test data during 2021-2022. The test was conducted at different 19 sites in atmospheric zone above ground that primarly have low deposition rate of chloride and sulfurdixoide. For comercial use purpose, users are on their own benefit, risk and resposibility. The corrosion value provided is only for a consideration. Users must consider every reality corrosion aspects more than theorethical value provide by the map above