Question

What are the constituents of solder alloy? Which property of solder makes it suitable for welding electrical wires?

Answer 1

Alloys:

• “An alloy is a homogeneous mixture of two or more metals, or a metal and a non-metal”.
• Alloying is the best property for improving the properties of a metal.

Solder alloy:

• Solder is an alloy of Lead $\left(\mathrm{Pb}\right)$ as well as Tin $\left(\mathrm{Sn}\right)$.
• The composition of solder is $50\%\mathrm{Pb}$ and$50\%\mathrm{Sn}$.

Uses:

• Solder is the best material for welding.
• It has a low melting point and helps to maintain a good interaction between two points of lower resistance. Thus, it is used for welding electrical wires together.