ISO 2560:2020 pdf download Welding consumables — Covered electrodes for manual metal arc welding of non-alloy and fine grain steels — Classification
1 Scope
This document specifies requirements for the classification of covered electrodes and deposited metalin the as-welded condition and in the post-weld heat-treated condition for manual metal arc welding ofnon-alloy and fine grain steels with a minimum yield strength of up to 500 MPa or a minimum tensilestrength of up to 570 MPa.
This document is a combined specification providing for classification utilizing a system based on theyield strength and the average impact energy of 47 J of all-weld metal, or utilizing a system based on thetensile strength and the average impact energy of 27 ] of all-weld metal.
a) Clauses,subclauses and tables which carry the suffix letter “A” are applicable only to covered
electrodes classified to the system based on the yield strength and the average impact energy of47 ] of all weld metal in this document.
b) Clauses, subclauses and tables which carry the suffix letter “B”are applicable only to covered
electrodes classified to the system based on the tensile strength and the average impact energy of27 ] of all weld metal in this document.
c)Clauses, subclauses 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 document.
2Normative references
The following documents are referred to in the text in such a way that some or all of their contentconstitutes requirements of this document. For dated references, only the edition cited applies. Forundated references, the latest edition of the referenced document (including any amendments) applies.ISO 544,Welding consumables —Technical delivery conditions for filler materials and fluxes — Type ofproduct, dimensions, tolerances and markings
ISO 2401,Covered electrodes —Determination of the efficiency, metal recovery and deposition coefficientISO 3690, Welding and allied processes —Determination of hydrogen content in arc weld metal
ISO 6847,Welding consumables —Deposition of a weld metal pad for chemical analysis
ISO 6947:2019,Welding and allied processes – welding positions
ISO 14344, Welding consumables — Procurement of filler materials and fluxes
ISO 15792-1:2020,Welding consumables —Test methods — Part 1: Test methods for all-weld metal testspecimens in steel, nickel and nickel alloys
ISO 15792-3:2011,Welding consumables —Test methods – Part 3:Classification testing of positionalcapacity and root penetration of welding consumables in a fillet weld
ISO 80000-1:2009,Quantities and units — Part 1: General.Corrected by ISO 80000-1:2009/Cor 1:2011
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
4 Classification
Classification designations are based on two approaches to indicate the tensile properties and the impact properties of the all-weld metal obtained with a given electrode. The two designation approaches include additional designators for some other classification requirements, but not all. In most cases, a given commercial product can be classified in both systems. Then, either or both classification designations can be used for the product. The classification includes all-weld metal properties obtained with a covered electrode as given below. The classification is based on an electrode size of 4,0 mm, with the exception of the symbol for welding position, which is based on ISO 15792-3. Where the defined diameter has not been manufactured, the closest diameter to 4,0 mm shall be used for all-weld metal tests.ISO 2560:2020 pdf download