Evaluation of welds is required for qualification, procedure establishment and design purposes. Tensile, bend, impact, fatigue, stress-rupture, and fracture toughness tests are very useful for welded joints. Metallographic examination is required for microstructure analysis and failure investigation.

Cold cracking tests like CTS, implant tests and hot cracking tests are required to establish weldability under severe conditions.

Corrosion tests are done for checking the service performance under different corrosive media.