re: the braze contamination below. It's complicated, and all I know is what the metallurgist and metallurgical engineer said. It should be obvious from the original thread that information and subsequent clarification came in over time.



150X SEM image of a contaminated region of the braze. EDX (Spectrum 1) showed the inclusions to be oxidized ferrous debris. The EDX are on the last page of the original thread



200X of the contamination (upper left) and oxidized steel (right) loaded with manganese sulfide inclusions



William: if you would please post your (real) name and email I would be happy to send you the report.