Tinned copper wire is an uninsulated wire that is coated by a layer of tin. Why do you need tin-plated copper wire? Recently manufactured, fresh bare copper conductor works very well, but bare copper wire is prone to oxidation over time much more than its tinned counterpart. Oxidation of bare wire leads to its degradation and failure in electrical performance.

The tin coating protects wire from oxidation in humid and rainy conditions, high heat environments, and in some soil types. Generally, tinned copper is used in environments with long-term exposure to excess moisture to prolong the lifespan of copper conductors.

Bare copper and tinned copper wires are equally conductive, but the latter provides robust protection against corrosion and oxidation. Here are some other benefits of tinned copper wires:

• Corrosion resistance, especially in wet or saltwater environments
• Extended cable life
• Easy solderability

Tinned copper wires are preferred for humid and high-temperature environments. The following are some specific applications:

• Electronic components
• Circuit boards
• Test lead wire
• Wastewater treatment facilities
• Subway systems
• Utility projects
• Jewelry making