Should J507 welding rod be used for welding between the No. 20 steel pipes (Fe-1-1)?
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Regarding \"Should ER50-6 TIG welding/J507 electrodes be used for welding between No. 20 steel pipes (Fe1-1)?\" I never paid attention to this issue before. When I first started working in welding, my supervisor said it was done to facilitate the management of welding materials, and that as long as the N47014 welding evaluation standards were met, that would be sufficient. Currently, for basic FE-1-1 applications, the J427 welding rod is not used, and weld qualification tests are conducted only with Q345/J507 or ER50-6. The design drawings sometimes specify J427 as the recommended material. https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=3044594. This post also mentions this point; some people say that using 507 for the main parts of the device and 427 for these other components can lead to confusion, and it makes quality control more difficult. ” I just want to ask everyone: in actual production, is it feasible to use J507 and ER50-6? What do those in the pressure vessel manufacturing industry do?
ER50-6 can be used as the welding wire; however, it is still not recommended to use J507 as the electrode. Instead, J427 should be used. You can refer to the principles for selecting welding materials in NB/T47015.
A reasonable angle should be 427; in that case, a weld evaluation for J427 can be prepared. From a practical manufacturing perspective, the carbon steel material used is mainly Q345R; the pipe joints, on the other hand, are made of 20#. I would like to ask everyone how this is applied in practice – and whether J507 is also used
Ordinary equipment is fine, but there are several types of equipment that can only use Q245R; those with specific hardness requirements must use J427