Weld assessment coverage

2016-10-25View Original

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The welding procedure qualification with a base metal group number of Fe-1-2, which is deemed satisfactory as per NB/T47014 6.1.2.2d), is applicable to base metals with a group number of Fe-1-1; 6.1.3.1a) specifies the change in the filler metal category number. When welding Fe-1 and Fe-3 base metals with filler metal of a higher strength grade instead of one of a lower strength grade, it may not be necessary to conduct a new process evaluation. Based on the above two points, does the process evaluation using Q345R base material and J507 welding electrodes fail to cover the production instructions for Q245R base material and J427 welding electrodes?

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Weld assessment coverage

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