Similar to iron, copper and brass materials also undergo corrosion, resulting in a greenish layer on this surface. To prevent this, the surface of copper and brass materials are thinly coated with tin.
Tinning is the process of coating sheets of copper, iron, brass and steel with tin.
This process is most often used to prevent rust and is also commonly applied to the ends of stranded wire used as electrical conductors to prevent oxidation.
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