08-08-2017· Low temperature: Unlike welding, soldering uses a low temperature to join metals. Filler materials: Soldering is done with fillers that melt at below 840 °F (450°C). Different metals can be soldered: Metals that can be soldered include gold, silver, copper, brass, and iron. The bond created when the melted soldered material solidifies. Not as strong as welding or brazing.