Question

What are the alloys of solder?

Answer 1

Hint : Soldering is the process of joining two metals by another softer mixture of metals. This joining metal melts at a lower melting point resulting in acting as a conjunction. There are two types of solder, one is soft solder while the other is hard solder.

Complete Step By Step Answer:
As we know the soldiers are such substances which have melting points much lower than that of the joining metals. So alloys have melting points below the melting point of the connecting metals.
Alloys are basically when a mixture of metals forms another substance, which might have been hard or maybe soft.
According to the alloys soldering is further divided into: -
Soft Soldering – This process has the lowest filler metal melting point of all the soldering types at less than ${400^ \circ }C$ . These filler materials are generally alloying of lead with liquidus temperatures under ${350^ \circ }C$ and tin.
Hard Soldering- This soldering is done above the temperature of ${400^ \circ }C$ . This soldering is also called silver metal soldering. This is usually done by using brass or silver. It also requires a blowtorch to achieve the temperature.
Brazing- This type of soldering uses a metal with a much higher melting point. However, similarly to hard soldering, the metal bonded is heated as opposed to being melted. Once both the materials are heated sufficiently, then place the soldering metal between them which melts and acts as a bonding agent.
Alloys of solder are alloys of lead and tin & copper and zinc.

Note :
A soldering iron is a hand tool used to heat solder, usually from an electrical supply at high temperatures above the melting point of the metal alloy. This allows for the solder to flow between the workpieces needing to be joined.