This project involved applying a matte tin plating finish to aluminum components, with an intermediate underplate layer of copper. The plating process was carried out using the rack method to ensure a uniform and consistent finish.

Aluminum was selected as the base metal for this project due to its excellent conductivity and lightweight properties. A layer of copper was applied as an underplate to the aluminum components: this layer is essential because it significantly improves the adhesion of the tin plating to the aluminum substrate. The components were then plated with a matte tin finish which helps reduce glare and provides a smooth surface that is beneficial for both handling and visual inspection. Tin also provides excellent corrosion resistance and good electrical conductivity, making it an ideal plating material for components exposed to the outdoor environment of transmission systems.

The entire process adhered to the ASTM B545 standard for quality control. The copper underplate enhances the adhesion and overall durability of the tin finish, while the tin provides excellent conductivity and corrosion resistance. This combination is ideal for the power industry, specifically in electrical transmission and distribution applications, ensuring the components meet the high-performance requirements of electrical systems.