stainless 316 L
stainless 316 L
(OP)
I have a stainless 316L fitting that is friction welded w/ recent welds not passing pressure testing. No supllier change and no process change but noticed that shipment of new fitting (fitting that wont pass pressure test after weld)is slightly magnetic relative to old fittings. I suspect some degree of martensitic transformation in the new fittings vs old. Question: could the martensite impact weldability to any significant degree and should I be concerned about corrosion resistance.
Thanks
Thanks





RE: stainless 316 L
RE: stainless 316 L
thanks
RE: stainless 316 L
It could be that the process will not handle SS of different strength levels. There can be quite a range in strength for annealed SS.
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RE: stainless 316 L
I suggest a metallurgical analysis of the welding to understand the reason of the failure and maybe a chemical analysis of the materials to be sure that it's a 316L SS.
Regarding the corrosion resistance, is would be necessary to know in which service and operating conditions the fitting will be used.
regards
Strider
http://www.corrosionist.com