Welding consumables - Covered electrodes for manual metal arc welding of creep-resisting steels - Classification (ISO 3580:2004); German version EN ISO 3580:2008
This International Standard specifies requirements for classification of covered electrodes, based on the all-
weld metal in the heat-treated condition, for manual metal arc welding of ferdtic and martensitic creep-
resisting and Iow alloy elevated temperature steels.
This document is a combined specification for classification utilizing a system based upon the chemical
composition of the all-weld metal, with requirements for the yield strength and the average impact energy of
47 J of all-weld metal, or utilizing a system based upon the tensile strength and the chemical composition of
all-weld metal.
1) Paragraphs and tables which carry the suffix letter "A" are applicable only to electrodes classified to
the system based upon chemical composition, with requirements for the yield strength and the
average impact energy of 47 J of all-weld metal under this International Standard.
2) Paragraphs and tables which carry the suffix letter "B" are applicable only to electrodes classified to
the system based upon the tensile strength and the chemical composition of all-weld metal under this
international Standard.
3) Paragraphs and tables which do not have either the suffix letter "A" or the suffix letter "B" are
applicable to all covered electrodes classified under this International Standard.
For comparison purposes, some tables include requirements for electrodes classified according to both
systems, placing individual electrodes from the two systems, which are similar in composition and properties,
on adjacent lines in the particular table. In a particular line of the table that is mandatory in one system, the
symbol for the similar electrode from the other system is indicated in parentheses. By appropriate restriction of
the formulation of a particular electrode, it is often, but not always, possible to produce an electrode that can
be classified in both systems, in which case the electrode, and/or its packaging, may be marked with the
classification in either or both systems.