Corrosion occurs in countless solutions and chemical environments, but the actual corrosion rates will vary dramatically depending on the specifics of each setting. While zinc typically offers excellent protection from corrosion in most situations, there are occasionally certain conditions where chemicals can react with zinc to produce acidic products that will increase the corrosion rate.
Frank C. Porter, one of the foremost authorities on zinc, has provided a number of charts in his book Corrosion Resistance of Zinc and Zinc Alloys, which provide detailed information on how zinc reacts with a large variety of chemicals and solutions. Mr. Porter has been kind enough to allow us to share these charts with you. The charts are not for reproduction or distribution and provided for general information only. Caution should be used when reviewing the information because a slight difference in the specifics of your environment can lead to inaccurate conclusions (for example looking at the figures for a dry chemical powder versus a concentrated solution).
The chemicals are listed in a variety of fashions (i.e. solutions, vapors, dry, moist, immersed, with varying degrees of strengths, and so forth), so it is necessary to have a complete understanding of the setting in question before attempting to make any specific assumptions. If you would like assistance in determining the reactivity of zinc when exposed to a particular chemical, or if you are interested in a chemical that is not listed in these charts, please contact us online, or call our toll-free technical support at 1.800.468.7732.
Corrosion Data for Zinc and Zinc Coatings with: