Lead-free solder wire

Luster presents a certain degree of brightness, and the appearance is better. This is also one of the advantages of lead-free solder wire, but the gloss color of the solder joint does not represent the soldering performance of the solder joint itself. The gloss color of the solder joint with silver-containing lead-free solder wire affects the brightness and color of the solder joint appearance. Since silver metal is a matte metal, it is not a shiny metal, so the luster of the solder joints of silver-containing lead-free tin wire is not shiny, and it is matte.