High temperature tin wire is composed of tin alloy and auxiliaries. The alloy composition is divided into tin lead and lead-free auxiliaries.

The solder wire used in manual electronic raw device welding is composed of tin alloy and auxiliary agent. In electronic welding, the solder wire matches with the soldering iron, and the high-quality soldering iron provides stable and continuous melting heat. The solder wire is added to the surface and gap of the electronic raw device as the filler metal, and the fixed electronic raw device becomes the main component of welding. The composition of solder wire is closely related to the quality of solder wire, which will affect the chemical and mechanical properties and physical properties of solder wire.

Solder wire without additives is not able to carry out the welding of electronic components, because it does not have wettability, expansion. The welding will produce spatter, solder joint formation is not good, long-term development of the performance of additives affect the performance of solder wire welding.

According to different conditions, tin wire has the following classification methods:

According to the classification of metal alloy materials: can be divided into tin lead alloy solder wire, pure tin solder wire, tin copper alloy solder wire, tin silver copper alloy solder wire, tin bismuth alloy solder wire, tin nickel alloy solder wire and special tin containing alloy material tin wire.

According to the chemical composition of the auxiliary agent of the solder wire, it can be classified into rosin core solder wire, no-cleaning solder wire, solid core solder wire, right grease type solder wire, single-core solder wire, three-core solder wire, water-soluble solder wire, aluminum solder wire, stainless steel solder wire.

According to the melting temperature to classify: can be divided into low temperature solder wire, normal temperature solder wire, high temperature solder wire.