Where can I find a chart depicting F numbers for Stainless steel GTAW wire. i want to verify the ER308, Er308L, ER316, ER316L, Er309, ER309L and ER304, Er304L, etc... all come from the same F No. grouping....I believe its F-6...Thanks for the help!
Get a copy of ASME Sect II part C. It has all the SFA-specs. There is no discernable pattern in the #'s, as they "just grew" as new processes were added, and new fillers were developed.
The F #'s come from ASME Sect IX.
The A #'s are 'puddle analysis'of a specific filler, and you cross-reference between IX and the fillers metallurgy --from IIC.
Until you have done all this a time or two, it's tough.