... low melting point 2) the welding wire has various specifications for choosing 3) Subtle working propertie ... The main materials of BAg40CuZnSn silver welding wire include silver, copper, zinc and tin. Among them, the ... shape of solder joint.BAg40CuZnSn welding wire is widely used in the welding of refrigeration, electrical household appliances, machinery, aviation, automobile, ...