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Thank you Christine.

I recall seeing in either ASME SEC.VIII_DIV.1, B31.3, or B31.1, if I recall correctly, an allowance for a 10% reduction in design temperature for flanges that are on nozzles. I've read through the sections where I'd expect to find that in each, but cannot find it. If anyone could point me in...

weldstan, I found a video showing macroetching and while I see a definite line showing the weld penetration, but if the HAZ is shown (~5:20 mark), I'm not able to make it out. Are the samples you make made similarly (prep starts ~1:20 mark)? I am currently trying to obtain the relevant ASTM...

Great to hear it, Weldstan. Searching the web for "macro-etching" returns many links to this process, which I've yet to look into, but will shortly. In your opinion, is it difficult to learn from such sources well enough to do an adequate analysis? Do you have any references you'd suggest for...

I need to test a welding sample of pipe to see how deep into the wall the HAZ extends. Our testing facility can do hardness testing, but not etching for seeing microstructure. How accurate would hardness testing be to determine HAZ depth? If it can be done well enough, what precautions should...

From searching posts on this forum, I gather that there is no particular source for filler metal selection for dissimilar metals, and is left to designer discretion. I understand that the selection of filler is usually based on the higher strength material and chemistry should closely match...

I only have the design conditions. It's possible that this low temperature could be a potential startup temperature in some northern climate, but that's mere speculation.

Design temperature is 1150F, so it's getting up there. I work for a designer and manufacturer of temperature sensors, typically for refinery applications. We design according to their specs, and they are the ones who choose the material for their processes. This thermocouple pipewell is a...

Thanks, SnTMan. I am working to Sec VIII, Div 1, so that's just what I needed.

I am trying to find the allowable stress value for Inconel 800H @ -49F. For ferrous materials, there is General Note (e) for table 1A in II-D. "(e) Stress values for -20°F to 100°F are applicable for colder temperatures when the toughness requirements of Section III,VIII, or XII are met." I...

Revisiting this, The P5 pipes are 4" Sch.80, with a nominal wall thickness of 0.337". ASME BPVC SEC VII, DIV.1 requirements for thickness given our process conditions is around 1/8", so less than nominal thickness. The pipes in question are in the heater fixture, which was Code-U stamped...

The butter pad is an overlay on the OD of 4" pipe. What will be welded to the butter pad / overlay will be not just thermocouple wires, but a V-pad tubeskin thermocouple, which is attached with groove welds on each side of the V-pad. Nothing else will be done with this application other than...

I've created WPS's for butt joints where there is a buttering layer on one end of a base metal that gets PWHT and then welded to a 2nd base metal that needs no PWHT. ASME BPVC SEC IX, QW-283 seems to be written with this orientation in mind; at least when I read QW-283.2. I now have a job where...

If this forum is not the best place to ask this question, is there a more appropriate one?

I've created WPS's for butt joints where there is a buttering layer. ASME BPVC SEC IX, QW-283 seems to be written with this orientation in mind; at least when I read -283.2. I now have a job where I need to put a 4" x 6" x 3/16" alloy 625 butter pad on the OD of a P5 pipe to then weld...

I have an existing ASME CODE-U stamped vessel that I need to weld an Alloy 625 butter pad on 4” Sch.80 P5 pipe using GTAW for later welding onto them tubeskin temperature sensors. Referring to ASME BPVC SEC. VIII, DIV.1 table UCS-56-4, general note (b)(1), PWHT is not required for...

s23, I hope that your brother has better luck with the resolution that my in-laws did, who were basically told to pound sand, suck it up and accept the house as-is. The builder did have a PE to sign off on it, but his report was less than impressive in my opinion. The city inspector was...

Thank you very much for your assistance, Ed, particularly regarding recovery. An example flanged thermowell has a 1" OD stem, 15" long from the face of the flange. Should I expect noticeable deformation from the solution annealing? I can arrange for them to be annealed with the stems facing...

Thanks Ed. I'm not sure if I understand "clean" as you intend it. We are making thermowells, and the stem is turned down from bar and then TIG welded to a flange. Any machining oils will have been removed. For us, clean means the weld won't be contaminated. We don't perform material...

Due to several mistakes, I have some components made from 304/304L (welded with ER308L) went through PWHT at 1325F for 2 hours, cooled slowly to 800F and then air cooled. I understand that at this temperature, austinitic stainless steel can become sensitized. From what I've read, the amount of...