This document updates IFS:1998, the first document that proposed to establish a “generic”
system for identification of welding filler metals for use in ISO specifications. Since that issue,
additional ISO draft standards for welding filler metals have been prepared, many of which
have taken cognizance of the proposed generic system. In doing so, several refinements in the
generic system have been adopted. This document also recognizes revisions proposed in draft
national standards since the earlier edition. IIW representatives from Europe, Canada, Japan,
China, Australia, Argentina, Brazil, Russia, and the United States collaborated in providing the
data from specifications in their respective countries.