Welding material data sheet on the mechanical properties of the deposited metal in the heat-treated and welded states

The answer to this question can be influenced by many factors, including your specific application as well as the regulations and requirements related to product safety and durability. Under normal circumstances, if the welding material was tested in its welded state but you intend to use it on equipment that requires heat treatment, retesting may be necessary. Re-testing is primarily carried out to ensure that the heat treatment process does not significantly affect the mechanical properties of the welds, thereby avoiding issues related to product quality, safety, or durability. The heat treatment process may alter the microstructure of the weld, which can affect its mechanical properties. Therefore, to ensure product quality and safety, conducting re-inspection is very important. However, whether retesting is necessary and how to conduct it may require reference to relevant standards and regulations or consultation with the welding material manufacturer. .

Is it sufficient to have corresponding welding procedure qualification support?

According to your reasoning, does one have to manufacture a machine that is exactly identical to this device in order to prove that the welding material is of good quality? You have confused welding tests with welding simulation tests. As long as the welding materials meet the standards, that’s fine