The Mohs hardness of tin is about 1.5, which means that it is easily affected by external friction. During long-term use, the tin layer may become thinner due to wear or even fall off completely.

In acidic environments, the tin-plated layer of electrolytic tinplate can provide a certain degree of protection, but its acid resistance is limited. Strong acid environments may cause the dissolution and corrosion of the tin layer, thereby exposing the low-carbon steel substrate and further inducing corrosion.