Which aluminium Alloys Have the Best Corrosion Resistance?

aluminium alloys are corrosion resistant in atmosphere, but often have poor corrosion resistance when submerged in aqueous environments. Aluminum corrosion resistance is also often only high in a restricted range of pH. For example, data has been published6 that shows aluminum corrosion rates are very low when the chemical stream pH is between approximately 4 and 7, but the corrosion rates are very high when the pH is either below 4 or above 7.

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