GB/T 25774.1 - 2023 Preparation of samples for mechanical properties of deposited metals in the inspection of welded materials for focused steel, nickel and nickel alloys. The standard specifies the requirements for the selection of base materials and welding materials, and standardizes the welding process, including parameter settings such as welding current, arc voltage, and welding speed. Detail the surfacing and forming process of deposited metal samples, as well as the interception and processing methods of subsequent samples, and strictly control the dimensional accuracy. Through unified specifications, samples that can accurately reflect the mechanical properties of deposited metals can be prepared, providing a basis for mass evaluation of welding materials, and helping related industries to ensure the safety and reliability of welding structures.