What should be the recommended distance between bonded dissimilar metals to reduce corrosion risk?

To effectively reduce corrosion risk between bonded dissimilar metals, the recommended practice is to keep them as far apart as practical, taking into consideration the specific application. When dissimilar metals are in contact with each other, a galvanic couple can form, which can accelerate corrosion of the less noble metal. By physically distancing these metals, you minimize the electrochemical interactions that lead to increased corrosion rates.

The need for distance is influenced by factors such as the environmental conditions, the types of metals involved, and their respective positions in the galvanic series. By ensuring they are spaced apart, you diminish the potential for significant galvanic reactions, thereby prolonging the lifespan of both metals.

In contexts where the specific application must be considered, factors such as installation constraints and the operational environment also play a crucial role. It is essential to recognize that while spacing is a useful strategy, it should always be applied within the pragmatics of the marine application to ensure both safety and functionality.