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  1. tonnesen

    WPS with impact tests and PWHT

    I have a question concerning QW-407.2, when I qualify a WPS according to ASME Section IX with impact tests and PWHT this variable becomes essencial, so my question is if my coupon for the PQR is 25 mm and the PWHT is 1 hr, the range of thickness qualified is from 16 to 50 mm. Now suppose that in...
  2. tonnesen

    Welding SA-350 LF2Cl1 to SA-516 Gr 70N

    Hello, We are going to weld a SA-350 LF2Cl1 nozzle neck to a SA-516 gr 70N head. As I never worked with forgings, I was reading the SA-350 and found that the piece will be normalized and tempered or quenched and tempered, based on this I would like to know if after welding the nozzle neck to...
  3. tonnesen

    PWHT

    Hello, I would like some help in determining the necessity of PWHT because I didn't understand very well the paragraph UW-40(f)(5)(d) about determining the nominal thickness of groove+fillet weld. The groove design is similar to that in figure UW-16.1 (y-1). The weld is between a head and the...
  4. tonnesen

    Hardness test and PWHT

    Hi, In my company we have a internat standard that recommends to do a hardness test after PWHT in the HAZ and in the weld, obviously to evalute the PWHT, but we have to compare these values with some standard value of maximum hardness after PWHT. I only found this kind of rereference in ASME...

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