How to re-normalize A516-70 PWHT
How to re-normalize A516-70 PWHT
(OP)
My client wants A516-70 plates that have been rolled and welded to be re-normalized after welding.
The dimensions are about 40" ID X 1.5" wall x 8" long. Can anyone please point me to a spec that would provide the necessary temperature, holding time, heating/cooling rates, etc.?
Thanks.
The dimensions are about 40" ID X 1.5" wall x 8" long. Can anyone please point me to a spec that would provide the necessary temperature, holding time, heating/cooling rates, etc.?
Thanks.





RE: How to re-normalize A516-70 PWHT
If you do it outside, your heat treater should have a pretty good idea about every setup since they know their own facility the best. Or another quick route is to use the same normalizing configuration if the plate was normalized prior to rolling and welding.
Final note, I would do it vertically to minimize any possible distortion.
RE: How to re-normalize A516-70 PWHT
If Sec IX is applicable, keep in mind the WPS must be qualified with the heat treat you plan to use. It sounds like you'll be heat treating at a temp > the upper transformation temp, ( normalizing) which is an essential variable in Sec IX.
RE: How to re-normalize A516-70 PWHT
Trust me I know!
RE: How to re-normalize A516-70 PWHT
It is Sec IX weldtek, I remembered that we would need to have a new WPS qualified, but it's good of you to remind me also.
RE: How to re-normalize A516-70 PWHT
What you ask for are process details that any boiler/pressure vessel plate fabrication shop, which holds an ASME code stamp, can easily provide or pipe fabrication shop (which holds a Power Piping PP stamp).
RE: How to re-normalize A516-70 PWHT