Silver is second to gold in its malleability and ductility It also has the ability to be highly polished and reflective, and it is resistant to corrosion. Although silver is the best conductor of electricity, cop-per is more frequently used for this purpose in industrial applications due to its relative cost.
Sterling silver is 92.5 percent silver and 7.5 percent copper. The copper is added to the silver in its pure form (99.9 percent silver) to increase strength. This fact, combined with its beauty, is what makes sterling silver popular for hollowware and cutlery as well as jewelry.
Silver solder is an alloy of silver, copper, and zinc. It is produced in alloys with different melting temperatures, allowing jewelers to perform consecutive solderings on a single piece without melting the previously soldered joint. Silver solders are most commonly available in easy flow, easy, medium, hard, and IT varieties. Easy-flow silver solder flows at the lowest temperature, and the higher the melting point of the solder, the more silver there is in the alloy. Silver solder is also used for soldering copper, brass, bronze, and nickel.