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  1. RandySavage

    Welding 9% Chrome with ERNiCr variants without PWHT - NBIC Weld Method 6

    I wanted to follow this up for anyone else that winds up looking for similar information. We did finally get some good results and with a bit more refinement got the procedure to pass. Thank you to all who replied for the information and help. I used GTAW fully for this, so unfortunately I...
  2. RandySavage

    Welding 9% Chrome with ERNiCr variants without PWHT - NBIC Weld Method 6

    Thank you for the replies so far, still completing a lot more tests and finding some degrees of success, but not the big eureka moment yet. Ed, while it may be hear say it is helpful to know that there may be a legitimate link between my thoughts on heat cycling with the material, will need to...
  3. RandySavage

    Welding 9% Chrome with ERNiCr variants without PWHT - NBIC Weld Method 6

    Hello All, Trying to qualify a procedure for welding 9% Chrome material (Grade 91) to itself with ERNiCr-3 N06082 filler metal - in accordance with the parameters laid out in the NBIC Section 3 book's Weld Method 6. For any interested it can be found in section 2.5.3, 2.5.3.6. This weld method...
  4. RandySavage

    Qualification of tube/tubesheet with groove weld

    That was a perfect example, thank you.
  5. RandySavage

    Qualification of tube/tubesheet with groove weld

    David, Probably a dumb question but, is it possible to fall outside the ranges of QW-451.1 since it covers from Less than 1/16" to over 6"? Seems like the table would allow for any thickness imaginable. Also thank you for the clarification on the dissimilar thicknesses, is it a situation...
  6. RandySavage

    Qualification of tube/tubesheet with groove weld

    JuF, I like your breakdown of how you went about looking into the problem, it's very helpful to see someone's process and it adds a lot of clarity to the situation. Also very much appreciate that you listed your materials and also converted the dimensions. As for your WPS, looking into 202.4...

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