Why is hardened copper preferred to soft copper pipe in some applications?

Hardened copper is preferred in certain applications primarily because it is more durable. The increased durability of hardened copper allows it to withstand higher pressure and is less prone to deformation compared to soft copper. This is critical in systems where copper pipes are subjected to physical stress or are installed in locations where they might be exposed to impacts or vibrations.

In addition, hardened copper offers enhanced resistance to corrosion, particularly in environments that may contain aggressive chemicals or moisture. The longevity and reduced maintenance needs that come with using hardened copper pipes make them an attractive choice for contractors and builders looking for reliability in plumbing and other construction applications.

While the other options highlight some characteristics of copper, they do not capture the primary reason for the preference of hardened copper. For instance, while hardened copper can be threaded, so can soft copper, and soldering is typically required for both types of copper in certain installations. Cost comparisons, such as with galvanized pipes, are also less relevant when emphasizing durability as a key factor in material selection.