Solder is Metal Alloys that are used to join metal surfaces to each other. The types are bar solder, ribbon solder, solder paste, solder shot, solder sphere, or wire solder in diameters ranging from 0.006” (0.15mm) to 0.250” (6.35mm) with melting point ranging from 244°F (118°C) to 1983°F (1084°C) in lead free or leaded. The flux type is acid cored, no-clean, rosin activated, rosin mildly activated, or water soluble.