Table of Contents
Copper and aluminium parts used in electrical systems need effective surface protection to maintain stable performance over time. High humidity, demanding operating conditions, and constant current loads can accelerate oxidation, increase resistance, and raise the risk of failure in contacts and conductive components. A properly applied electroplated coating helps limit these problems and extends the service life of key parts used in power infrastructure, substations, and e-mobility systems.
Corrosion Protection with Tin Plating
Professional tin plating involves the electrolytic deposition of a thin tin layer onto selected metal parts. Electris Coating Systems applies this process to copper and aluminium components, creating a protective barrier that limits oxygen access and reduces surface oxidation. Even small changes on the surface of a contact can affect the reliability of the whole system, so coating quality has a direct practical value.
Thickness and Process Control
The process can be adjusted to achieve tin coatings from 1 μm to 50 μm, which allows the layer thickness to be matched to the technical requirements of a specific application. This makes tin plating suitable for components used in sectors such as electronics, power engineering, and automotive production. Electris also handles parts with complex geometry and dimensions up to 2,100 mm in length, which is important for larger conductive elements such as busbars.
Every part is prepared before coating to support strong adhesion and consistent results across the surface. The finished layer can also reduce friction, which helps during later assembly and connection of components.
Solderability and Functional Benefits
One of the main technical advantages of tin plating is improved solderability. A tin-coated surface supports cleaner, stronger, and lower-resistance joints, which matters in power distribution units, switchgear, and control panels. When conductive parts are easier to join and less vulnerable to oxidation, assembly becomes more predictable and the risk of connection issues is reduced.
Selective Coating Options
Electris offers more than full-surface coating alone, as the company also provides selective plating and combines electroplating with powder coatings in selected areas. Epoxy and polyester powder coatings can be applied where electrical insulation is required, allowing the final component to meet both conductive and protective needs within one production process.
Key effects of the process include:
- Corrosion protection in high-humidity environments.
- Coating thickness tailored from 1 μm to 50 μm.
- Processing of components up to 2,100 mm long.
- Better solderability and easier assembly thanks to lower friction.
Conclusion
For copper and aluminium components used in demanding electrical applications, tin plating improves durability, supports reliable joining, and helps maintain stable operating parameters over time. When combined with accurate thickness control and optional selective insulation, it becomes a practical solution for manufacturers that need repeatable quality in power-system components.