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proper weld metal notes

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Title: proper weld metal notes

while in the process of revising some general notes, i was looking at the march issue of modern steel construction, at the third of the series on "Are You Properly Specifying Materials?" by charlie carter. http://www.modernsteel.com/home.asp?iid=59&aid=181 (this is a very well written and comprehensive article series. thanks to charlie and aisc for makeing back-issues available online)

here is the section on weld metal:

"Weld Metal
The appropriate weld metal is as summarized in ANSI/AWS D1.1-98 Table 3.1
for the various combinations of base metal specification and grade and electrode
specification. Weld metal with a tensile strength FEXX = 70 ksi is most common."

i do not understand the designation FEXX.

i do not want to call out an electrode designation for fear of being 'accused' of dictating a welding process. from table of base metal/filler metal in d1.1, it is obvious that the electrode classification varies by process and rightly so i suppose.

SMAW -EXXXX
SAW  -FXX-EXXX
GMAW -ERXXX(-X)
FCAW -EXXX(-X)
 
wouldn;t it be much simpler to state something like:

"THE WELD FILLER METAL SHALL HAVE A MINIMUM YEILD POINT OF 60/70/80 KSI"

tia

Dennis Pantazis

312-274-2406 voice
mailto:dpantazis(--nospam--at)hksepc.com