Product: Tin Wire Product composition: Sn42% Bi58% Product diameter: 0.8~2.0mm Product weight: 500g Working temperature: 180 â?? Melting point: 138â?? Product packaging: 20 rolls/box Product use: suitable for low temperature lead-free packaging of heat-resistant components, manual soldering iron welding and automatic welding in the field of secondary packaging of circuit boards; suitable for welding of heat-resistant components. product description: The melting point of Sn42Bi58 tin wire alloy produced is 138â??, which can meet the welding and packaging requirements of electronic components that are sensitive to welding temperature. Using its own patented technology, customizing special equipment and molds to manufacture brittle tin-bismuth alloy tin wires, the low-temperature solder has a low melting point and the welding operating temperature is 190 �°C. Lead-free low-temperature solder joint brightness, welding mechanical strength, tensile toughness and electronic conductivity have been greatly improved. . It has the characteristics of fast soldering speed and firm soldering, as well as its fine alloy structure, uniform composition, and excellent welding performance.