what is silver soldering used for?
Silver soldering. Hard soldering or silver soldering is used to join precious and semi-precious metals such as gold, silver, brass, and copper. The solder is usually referred to as easy, medium, or hard. This refers to its melting temperature, not the strength of the joint. Extra-easy solder contains 56% silver and has a melting point of 1,145 Â°F (618 Â°C). Extra-hard solder has 80% silver and melts at 1,370 Â°F (740 Â°C).