The Corrosion Evaluation Tests for Tinplate

Abstract

The Alloy-Tin (ATC) and Iron-Solution (ISV) tests are generally accepted to evaluate the corrosion resistance of electrolytic tinplate in plain cans for moderately acid foods. The relative potential difference between alloy-layer and base steel, which mainly depends upon the electrochemical characteristcs of steel, plays an important role to these test results.
It is also described that the corrosion resistance of tinplate can be measured by means of proper evaluation ways, such as newly developed ASC(Alloy-Steel Couple), TAG (Tinplate-Alloy Couple) tests and polarization technique, which directly correlated with each corrosion process of tinplate in plain cans in moderately acid foods.