What are the alloys used in the procedure of welding?
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An alloy of tin and lead, called solder, is used for welding purposes. It has a low melting point.
A typical modern solder consists of 0.75% copper and 99.25% tin.
A mixture of (50-70%) tin, (30-50%) lead, antimony and copper were used in the old form of solders.
Lead is a cheap metal that also reduces the alloy’s overall cost. Lead is used in welding because it decreases the liquid point of an alloy.