Which type of joint should be avoided in high-stress applications?

Threaded joints should be avoided in high-stress applications due to their inherent characteristics that make them less suitable for such conditions. Unlike welded joints, which create a continuous and strong connection, threaded joints rely on the mechanical engagement of the threads to hold the components together. This can lead to potential weaknesses, as the threads may not withstand the same levels of stress and pressure as a welded joint.

In high-stress environments, threaded connections are more susceptible to issues such as loosening due to vibration, fatigue, and stress concentration at the thread roots. Additionally, the potential for leakage is higher in threaded connections when exposed to dynamic loads or thermal expansion, which may not occur as significantly in welded or flanged joints. Overall, while threaded joints can be effective in many applications, they are generally not recommended for high-stress situations where mechanical reliability is crucial.