What is a key factor affecting the lifespan of a brazed joint?

A key factor affecting the lifespan of a brazed joint is the environmental conditions the joint is exposed to. This includes factors such as temperature fluctuations, exposure to corrosive substances, humidity, and mechanical stress. These conditions can lead to deterioration of the joint over time. For instance, high temperatures may lead to thermal expansion that causes stress on the joint, while corrosive environments can lead to erosion or oxidation of the filler metal or the base metals, compromising the integrity of the joint.

While the type of filler metal used, the thickness of the base metals, and the skill level of the technician are all important considerations in the initial formation and strength of the joint, it is the long-term exposure to environmental conditions that primarily influences how well the joint will endure over its lifespan. Properly addressing these environmental factors can help to maximize the durability and longevity of brazed joints.