Dear all,

I have a Client requirement to qualify our welding procedures to ASME IX, this is no problem usually as we are very experienced with the code. Problem we have is that we are welding very thin sheet (0.15-0.4mm t) butt welds for the application in 316L type stainless steel, that according to the code require guided bend test to qualify (at this stage Client will not accept any concession in lieu to the contrary, i.e. additional macro's, radiography, fracture test etc). We have spoken to a number of mechanical test houses whom state that to conduct a guided bend test on weldment material this thin is impossible as the formers would need to accommodate a 'plunger' or similar 4xt, for our 0.15mm butt welds this means a guided bend test jig forming a 'bend' with radii 0.6mm.

Does anyone have any experience or suggestions, I understand we can go back to Client and ask for concession/dispensations but at this stage I need to confirm that the practicality of complying 100% to ASME IX is not achievable, I understand the intent can be met via other assurance options.

Any help greatly appreciated.