What is the typical composition of wiping solder?

Wiping solder is primarily used in plumbing applications for joining copper pipes and fittings. The typical composition of wiping solder consists of 35% tin and 65% lead. This ratio is beneficial because it creates a solder that, when melted and applied, exhibits good flow characteristics and results in strong joints that can withstand the thermal and mechanical stresses commonly encountered in plumbing systems.

The high lead content in this solder enhances its melting and flow properties, making it easier to achieve a smooth and uniform joint. At the same time, the tin serves to improve the overall strength and durability of the joint. This specific ratio has been historically favored in various soldering practices in plumbing, particularly for creating watertight seals.

Understanding the composition of wiping solder is crucial for anyone working as a plumbing contractor, as using the correct type of solder ensures the reliability and longevity of plumbing installations.