In my opinion a good practice is to have RT also after PWHT becasue it could make some defect bigger. It is more expensive and so you have to decide if it is necessary or not.
Generally SA-516 Gr. 70 N has no problem above -45 °C if the requirements of ASME Code are satisfied (like bhushan76 say). In any case, with -50 °C, you must have an impact test at (minimum( -50 °C) and you have to choose the value required (Joule) by the code (or by PED Dyrective if you have to...
Thank you esce, but some doubts remain because also this articole seems to explain that this type of bending is a secondary bending stress...in any case thank you.
Hello everybody,
I have calculated a spherically dished bolted cover Type D with alternative rule of paragraph 4.7.5.3. In Table 4.7.1 it compares the membrane+bending stress at head-to-flange junction with 1.5*S. Why does it consider the bending like a primary stress and not like a secondary...