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Patent Pending Solder (/ˈsoʊldə/,[1] /ˈsɒldə/[1] or in North America /ˈsɒdər/[2]) is a fusible metal alloy used to join together metal workpieces and having a melting point below that of the workpiece(s). Soft solder is typically thought of when solder or soldering is mentioned, with a typical melting range of 90 to 450 °C (190 to 840 °F).