<prompt> The soldering temperature for orthodontic silver solders is between:550-555 degree Celsius720-775 degree Celsius670-675 degree Celsius595-600 degree Celsius  <response>: Silver-based solders are used when a low-fusing point is needed for soldering onto stainless steel or other base metal alloys. Orthodontic appliances are commonly soldered using silver-based solders. In general, the resistance of silver solders to tarnish is not as good as gold-based solders. The silver-based solders are composed of silver 10 to 80 wt, copper 15 to 30 and zinc 4 to 35, with some products containing small percentages of cadmium, tin or phosphorus to further modify the fusion temperature. The formation of the silver-copper eutectic is responsible for these solders to range from 620 to 700C, which is slightly below those of gold-based solders. This difference is important in the soldering of stainless steel. 