This International Standard specifies requirements for classification of covered electrodes and deposited metal in
the as-welded condition and in the post-weld heat-treated condition for manual metal arc welding of non-alloy and
fine grain steels with a minimum yield strength of up to 500 N/mm2 or a minimum tensile strength of up to
570 N/mm2.
This International Standard is a combined specification providing for classification utilizing a system based upon 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 average impact energy of 27 J of all-weld metal.
1) Paragraphs and tables which carry the suffix letter “A” are applicable only to covered electrodes classified
to the system based upon the yield strength and the average impact energy of 47 J of all-weld metal in
this International Standard.
2) Paragraphs and tables which carry the suffix letter “B” are applicable only to covered electrodes classified
to the system based upon the tensile strength and the average impact energy of 27 J of all-weld metal in
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 in this International Standard.