Which type of primer provides galvanic protection to steel?

Zinc-rich primers are specifically formulated to provide galvanic protection to steel surfaces. When applied, these primers contain a high percentage of zinc dust, which acts as a sacrificial anode. In the presence of moisture and oxygen, the zinc oxidizes instead of the underlying steel, thereby preventing corrosion. This process is particularly valuable in harsh environments where steel is prone to rust and degradation.

Zinc-rich primers are often used in industrial and marine applications due to their ability to protect steel from corrosive elements. In addition to their corrosion resistance, these primers can also enhance paint adhesion and increase the longevity of the overall coating system. The unique properties of zinc-rich primers make them an essential choice for any project involving steel surfaces that require robust protection against the elements.