Hey All,

I've been searching around and for the life of me I can't seem to located a nice list of F-No's and A-No's in any one or two documents. There is an old AWS B3.0 -77 that shows them, but to me that document seems outdated. As well, I'm searching up and down for just a .pdf of the current AWS B2.1, and I can't seem to locate it.

I've looked at:

AWS B3.0-77
https://law.resource.org/pub/us/cfr/ibr/003/aws.b3.0.1977.pdf

AWS B2.1/B2.1M-BMG:2009-ADD1
https://app.aws.org/technical/B2.1-B2.1M-BMG-2009-ADD1.pdf

And what appears to be the most current:
AWS B2.1/B2.1M-BMG:2014
https://www.aws.org/library/doclib/B2.1-B2.1M-BMG-2014.pdf

But none of the recent documents seem to share the same, easy to navagate list as was provided on AWS B3.0-77.

So my question to you, the experienced many, is: What is/Where is the current edition of AWS B3.0-77 located?

I've sent out a request to the AWS, and once I get a response I'll be sure to add it on here, until then, I look for your help.

Cheers!

EDIT:

The offical response from the AWS came in, and here it is to help out an others that may ask this question:
B2.1/B2.1M:2014, Specification for Welding Procedure and Performance Qualification contains a filler metal grouping table as Annex B with the following:

“B1. F-Numbers

The F-Number grouping of electrodes and welding rods given in Table B.1 is based primarily on their usability characteristics, which fundamentally determine the ability to make satisfactory welds with a given filler metal and welding process. This grouping is made to reduce the number of welding procedure and performance qualifications, where this can logically be done. The grouping does not imply that filler metals within a group may be indiscriminately substituted for the filler metal that was used in the qualification test weldment without consideration of the compatibility of the base and filler metals from the standpoint of metallurgical properties, postweld heat treatment, design, service requirements, and mechanical properties. The groupings in Table B.1 follow essentially the F-Number designations established by the ASME Boiler and Pressure Vessel Code, Section IX. Filler metals not listed in Table B.1, but assigned an F-Number by ASME Section IX, are considered as listed filler metals.

B2. A-Numbers

The classification of ferrous weld metal for procedure qualification is given in Table B.2. Those A-Numbers follow essentially the A-Number designations established by the ASME Boiler and Pressure Vessel Code, Section IX.”

If that is what you are looking for, B2.1 is available through our bookstore at http://pubs.aws.org/p/1246/b21b21m2014-specification-for-welding-procedure-and-performance-qualification. You might also want to look at ASME Boiler and Pressure Vessel Code, Section IX.

ASME Section IX includes a listing of F numbers and a table used to determine the A-number of the weld deposit. The A-number can be determine by several different means.

AWS B2.1 uses M-numbers instead of P numbers. The F-numbers are the same as those found in ASME Section IX. That wasn't always the case. AWS used different F-numbers for the filler metals used by each welding process instead of the F-6 which is now a dumping ground for all ferrous filler metals not included in F1 through F6.

Best regards - Al