What Is Annealed Copper ? Annealing is a process were copper wire is heated to only halfway toward its melting point. This will reform the wire's physical structure as it was prior to being bent. This process is applied after the wire has been bent into the desired final shape.

What is Tinned Copper ? Tinned copper wire is copper wire coated with a thin, electroplated layer of tin. Tinning makes it easier to solder the copper wire because it readily bonds to solder. The process also provides extra oxidation resistance and high abrasive qualities.