Silver solder is used with a flux that chemically cleans the metal and keeps it clean during the silver soldering process. Silver solder is also known as silver solder.
Batterns Self-Pickling Flux is used for brazing (solder that melts at high temperature) gold, silver and platinum. It can be diluted with distilled water if too thick. Don’t let the name fool you. You still need to pickle the item before soldering.
The silver solder itself is not as strong as copper or aluminum bond wires. Silver solder has a higher melting point than other silver solders which means it is more durable and may withstand high temperature welding projects better than some other silver solders on the market.
A soldering iron is not suitable for soldering sterling silver. You must use a gas torch to get the right temperature.
Silver and gold jewelry require brazing. Copper, brass and bronze components can also be fused with brazing alloys. In addition to flux, brazing alloys also generally require the use of pickling solutions to clean and remove surface oxidation from the finished piece.
Soldering not only has a lower processing temperature, generally results in a joint with less strength than a soldered joint. For many applications this is suitable and even desirable. The shear strength of solder joints is typically five times that of solder joints.
Silver solder typically refers to a stronger solder used for mechanical connections (compared to lead solder, which is soft and relatively weak). However, silver solder has a higher melting temperature, which means the parts must be heated to a higher temperature for it to work.
An ordinary household propane or butane torch will work, but even better is one of the new torches that burn MAPP gas. Most hardware stores have them. They burn much hotter than ordinary torches, making silver soldering quicker and easier. Use silver solder like normal solder.
Silver soldering, often referred to as “brazing” or “silver soldering”, is a low temperature brazing process using rods with melting points in the range of 1145 to 1650ºF (618 to 899ºC). This is significantly lower than that of solders made from copper alloys.
Silver solder can be used to join most common metals, including mild steel, stainless steel, copper, brass, cast iron and dissimilar metals.
The primary purpose of flux is to prepare metal surfaces for soldering by cleaning and removing oxides and contaminants. Oxides form when metal is exposed to air and can prevent the formation of good solder joints.