Welding consumables - Covered electrodes for manual metal arc welding of non-alloy and fine grain steels - Classification (ISO 2560:2009)

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 MPa or a minimum tensile strength of up to 570 MPa. 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. a) 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. b) 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. c) 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.

Schweißzusätze - Umhüllte Stabelektroden zum Lichtbogenhandschweißen von unlegierten Stählen und Feinkornstählen - Einteilung (ISO 2560:2009)

Diese Internationale Norm legt Anforderungen fest zur Einteilung umhüllter Stabelektroden und des Schweißgutes im Schweißzustand und nach einer Wärmenachbehandlung für das Lichtbogenhandschweißen von unlegierten Stählen und von Feinkornstählen mit einer Mindeststreckgrenze bis zu 500 MPa oder mit einer Mindestzugfestigkeit bis zu 570 MPa.
Diese Internationale Norm enthält eine gemeinsame Spezifikation zur Einteilung des reinen Schweißgutes entweder nach der Streckgrenze und der durchschnittlichen Kerbschlagarbeit von 47 J oder nach der Zugfestigkeit und der durchschnittlichen Kerbschlagarbeit von 27 J.
a)   Abschnitte und Tabellen, gekennzeichnet durch ein nachgestelltes "A", können nur für umhüllte Stabelektroden angewendet werden, die nach der Streckgrenze und der durchschnittlichen Kerbschlagarbeit von 47 J des reinen Schweißgutes in dieser Internationalen Norm eingeteilt werden.
b)   Abschnitte und Tabellen, gekennzeichnet durch ein nachgestelltes "B", können nur für umhüllte Stabelektroden angewendet werden, die nach der Zugfestigkeit und der durchschnittlichen Kerbschlagarbeit von 27 J des reinen Schweißgutes in dieser Internationalen Norm eingeteilt werden.
c)   Abschnitte und Tabellen, die weder ein nachgestelltes "A" noch "B" enthalten, sind für alle nach dieser Internationalen Norm eingeteilten umhüllten Stabelektroden anwendbar.

Produits consommables pour le soudage - Électrodes enrobées pour le soudage manuel a l'arc des aciers non alliés et des aciers a grains fins - Classification (ISO 2560:2009)

L'ISO 2560:2009 spécifie les exigences relatives à la classification des électrodes enrobées et du métal déposé à l'état brut de soudage ou traité thermiquement après soudage, en soudage manuel à l'arc des aciers non alliés et des aciers à grains fins ayant une limite d'élasticité minimale pouvant atteindre 500 MPa ou une résistance à la traction minimale pouvant atteindre 570 MPa.
L'ISO 2560:2009 propose une spécification mixte permettant une classification utilisant un système basé soit sur la limite d'élasticité et l'énergie de rupture moyenne de 47 J pour le métal fondu hors dilution, soit sur la résistance à la traction et l'énergie de rupture moyenne de 27 J pour le métal fondu hors dilution.
Les alinéas et les tableaux portant le suffixe «A» sont applicables uniquement aux électrodes enrobées classifiées d'après le système basé sur la limite d'élasticité et l'énergie de rupture moyenne de 47 J pour le métal fondu hors dilution dans l'ISO 2560:2009.
Les alinéas et les tableaux portant le suffixe «B» sont applicables uniquement aux électrodes enrobées classifiées d'après le système basé sur la résistance à la traction et l'énergie de rupture moyenne de 27 J pour le métal fondu hors dilution dans l'ISO 2560:2009.
Les alinéas et les tableaux ne comportant ni le suffixe «A» ni le suffixe «B» sont applicables à toutes les électrodes enrobées classifiées conformément à l'ISO 2560:2009.

Dodajni materiali za varjenje - Oplaščene elektrode za obločno varjenje nelegiranih in drobnozrnatih jekel - Razvrstitev (ISO 2560:2009)

Ta mednarodni standard določa zahteve za klasifikacijo oplaščenih elektrod in pretaljene kovine v varjenem stanju in s toplotno obdelavo po varjenju pri obločnem varjenju nelegiranih in drobnozrnatih jekel z minimalno mejo prožnosti do 500 MPa ali minimalno natezno trdnostjo do 570 MPa. Ta mednarodni standard predstavlja kombinirano specifikacijo, ki omogoča klasifikacijo z uporabo sistema na osnovi meje prožnosti in povprečne udarne energije čistega vara 47 J ali z uporabo sistema na osnovi natezne trdnosti in povprečne udarne energije čistega vara 27 J. a) Odstavki in preglednice, ki so označeni z dodatno črko A, v tem mednarodnem standardu veljajo le za oplaščene elektrode, razvrščene po sistemu na osnovi meje prožnosti in povprečne udarne energije čistega vara 47 J. a) Odstavki in preglednice, ki so označeni z dodatno črko B, v tem mednarodnem standardu veljajo le za oplaščene elektrode, razvrščene po sistemu na osnovi natezne trdnosti in povprečne udarne energije čistega vara 27 J. c) Odstavki in preglednice brez dodatne črke A ali B v tem mednarodnem standardu veljajo za vse razvrščene oplaščene elektrode.

General Information

Status
Withdrawn
Public Enquiry End Date
19-Jan-2008
Publication Date
02-Mar-2010
Withdrawal Date
08-Oct-2020
Technical Committee
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
16-Sep-2020
Due Date
09-Oct-2020
Completion Date
09-Oct-2020

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SLOVENSKI STANDARD
SIST EN ISO 2560:2010
01-april-2010
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SIST EN ISO 2560:2006

'RGDMQLPDWHULDOL]DYDUMHQMH2SODãþHQHHOHNWURGH]DREORþQRYDUMHQMHQHOHJLUDQLK

LQGUREQR]UQDWLKMHNHO5D]YUVWLWHY ,62

Welding consumables - Covered electrodes for manual metal arc welding of non-alloy

and fine grain steels - Classification (ISO 2560:2009)
Schweißzusätze - Umhüllte Stabelektroden zum Lichtbogenhandschweißen von
unlegierten Stählen und Feinkornstählen - Einteilung (ISO 2560:2009)

Produits consommables pour le soudage - Électrodes enrobées pour le soudage manuel

a l'arc des aciers non alliés et des aciers a grains fins - Classification (ISO 2560:2009)

Ta slovenski standard je istoveten z: EN ISO 2560:2009
ICS:
25.160.20 Potrošni material pri varjenju Welding consumables
SIST EN ISO 2560:2010 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 2560:2010
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SIST EN ISO 2560:2010
EUROPEAN STANDARD
EN ISO 2560
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2009
ICS 25.160.20 Supersedes EN ISO 2560:2005
English Version
Welding consumables - Covered electrodes for manual metal
arc welding of non-alloy and fine grain steels - Classification
(ISO 2560:2009)

Produits consommables pour le soudage - Électrodes Schweißzusätze - Umhüllte Stabelektroden zum

enrobées pour le soudage manuel à l'arc des aciers non Lichtbogenhandschweißen von unlegierten Stählen und

alliés et des aciers à grains fins - Classification (ISO Feinkornstählen - Einteilung (ISO 2560:2009)

2560:2009)
This European Standard was approved by CEN on 17 September 2009.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European

Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national

standards may be obtained on application to the CEN Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the

official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,

Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 2560:2009: E

worldwide for CEN national Members.
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SIST EN ISO 2560:2010
EN ISO 2560:2009 (E)
Contents Page

Foreword ..............................................................................................................................................................3

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SIST EN ISO 2560:2010
EN ISO 2560:2009 (E)
Foreword

This document (EN ISO 2560:2009) has been prepared by Technical Committee ISO/TC 44 "Welding and

allied processes" in collaboration with Technical Committee CEN/TC 121 “Welding” the secretariat of which is

held by DIN.

This European Standard shall be given the status of a national standard, either by publication of an identical

text or by endorsement, at the latest by April 2010, and conflicting national standards shall be withdrawn at the

latest by April 2010.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN ISO 2560:2005.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following

countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech

Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,

Sweden, Switzerland and the United Kingdom.
Endorsement notice

The text of ISO 2560:2009 has been approved by CEN as a EN ISO 2560:2009 without any modification.

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SIST EN ISO 2560:2010
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SIST EN ISO 2560:2010
INTERNATIONAL ISO
STANDARD 2560
Third edition
2009-10-15
Welding consumables — Covered
electrodes for manual metal arc welding
of non-alloy and fine grain steels —
Classification
Produits consommables pour le soudage — Électrodes enrobées pour
le soudage manuel à l'arc des aciers non alliés et des aciers à grains
fins — Classification
Reference number
ISO 2560:2009(E)
ISO 2009
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SIST EN ISO 2560:2010
ISO 2560:2009(E)
PDF disclaimer

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© ISO 2009

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,

electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or

ISO's member body in the country of the requester.
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ii © ISO 2009 – All rights reserved
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SIST EN ISO 2560:2010
ISO 2560:2009(E)
Contents Page

Foreword ............................................................................................................................................................iv

Introduction.........................................................................................................................................................v

1 Scope......................................................................................................................................................1

2 Normative references............................................................................................................................1

3 Classification .........................................................................................................................................2

4 Symbols and requirements ..................................................................................................................3

4.1 Symbol for the product/process ..........................................................................................................3

4.2 Symbols for strength and elongation of all-weld metal ....................................................................3

4.3 Symbol for impact properties of all-weld metal .................................................................................4

4.4 Symbol for the chemical composition of all-weld metal ...................................................................5

4.5 Symbol for type of electrode covering................................................................................................6

4.6 Symbol for condition of post-weld heat-treatment of all-weld metal...............................................7

4.7 Symbol for nominal electrode efficiency and type of current ..........................................................7

4.8 Symbol for welding position ................................................................................................................8

4.9 Symbol for diffusible hydrogen content of deposited metal ............................................................8

5 Mechanical tests....................................................................................................................................9

5.1 Preheating and interpass temperatures..............................................................................................9

5.2 Pass sequence.....................................................................................................................................13

6 Chemical analysis ...............................................................................................................................13

7 Fillet weld test......................................................................................................................................16

8 Rounding procedure ...........................................................................................................................18

9 Retests..................................................................................................................................................18

10 Technical delivery conditions ............................................................................................................18

11 Examples of designation ....................................................................................................................19

Annex A (informative) Classification systems...............................................................................................20

Annex B (informative) Description of types of electrode covering — Classification by yield

strength and 47 J impact energy .......................................................................................................23

Annex C (informative) Description of types of electrode covering — Classification by tensile

strength and 27 J impact energy .......................................................................................................25

Annex D (informative) Notes on diffusible hydrogen and the avoidance of cold cracking ......................28

Bibliography......................................................................................................................................................29

© ISO 2009 – All rights reserved iii
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SIST EN ISO 2560:2010
ISO 2560:2009(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies

(ISO member bodies). The work of preparing International Standards is normally carried out through ISO

technical committees. Each member body interested in a subject for which a technical committee has been

established has the right to be represented on that committee. International organizations, governmental and

non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the

International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards

adopted by the technical committees are circulated to the member bodies for voting. Publication as an

International Standard requires approval by at least 75 % of the member bodies casting a vote.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO 2560 was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee

SC 3, Welding consumables.

This third edition cancels and replaces the second edition (ISO 2560:2002), which has been technically

revised.

Requests for official interpretations of any aspect of this International Standard should be directed to the

Secretariat of ISO/TC 44/SC 3 via your national standards body. A complete listing of these bodies can be

found at www.iso.org.
iv © ISO 2009 – All rights reserved
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SIST EN ISO 2560:2010
ISO 2560:2009(E)
Introduction

This International Standard recognizes that there are two somewhat different approaches in the global market

to classifying a given electrode, and allows for either or both to be used, to suit a particular market need.

Application of either type of classification designation (or of both, where suitable) identifies a product as

classified in accordance with this International Standard. The classification in accordance with system A is

[1]

mainly based on EN 499:1994 . The classification in accordance with system B is mainly based upon

standards used around the Pacific Rim.

This International Standard provides a classification in order to designate covered electrodes in terms of the

yield strength, tensile strength and elongation of the all-weld metal. The ratio of yield strength to tensile

strength of weld metal is generally higher than that of parent metal. Users should note that matching weld

metal yield strength to parent metal yield strength does not necessarily ensure that the weld metal tensile

strength matches that of the parent metal. Therefore, where the application requires matching tensile strength,

selection of the consumable should be made by reference to column 3 of Table 1A or to Table 1B and

Table 8B.

It should be noted that the mechanical properties of all-weld metal test specimens used to classify the

electrodes vary from those obtained in production joints because of differences in welding procedure such as

electrode size, width of weave, welding position, welding current, interpass temperature and parent metal

composition.
© ISO 2009 – All rights reserved v
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SIST EN ISO 2560:2010
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SIST EN ISO 2560:2010
INTERNATIONAL STANDARD ISO 2560:2009(E)
Welding consumables — Covered electrodes for manual metal
arc welding of non-alloy and fine grain steels — Classification
1 Scope

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 MPa or a minimum tensile strength

of up to 570 MPa.

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.

a) 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.

b) 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.

c) 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.
2 Normative references

The following referenced documents are indispensable for the application of this document. For dated

references, only the edition cited applies. For undated references, the latest edition of the referenced

document (including any amendments) applies.

ISO 544, Welding consumables — Technical delivery conditions for welding filler materials — Type of product,

dimensions, tolerances and markings

ISO 2401, Covered electrodes — Determination of the efficiency, metal recovery and deposition coefficient

ISO 3690, Welding and allied processes — Determination of hydrogen content in ferritic steel arc weld metal

ISO 6847, Welding consumables — Deposition of a weld metal pad for chemical analysis

ISO 6947, Welds — Welding positions

ISO 13916, Welding — Guidance on the measurement of preheating temperature, interpass temperature and

preheat maintenance temperature
ISO 14344, Welding and allied processes — Procurement of welding consumables

ISO 15792-1:2000, Welding consumables — Test methods — Part 1: Test methods for all-weld metal test

specimens in steel, nickel and nickel alloys
© ISO 2009 – All rights reserved 1
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SIST EN ISO 2560:2010
ISO 2560:2009(E)

ISO 15792-3:2000, Welding consumables — Test methods — Part 3: Classification testing of positional

capacity and root penetration of welding consumables in a fillet weld (as amended by

ISO 15792-3:2000/Cor.1:2006)
ISO 80000-1, Quantities and units — Part 1: General
3 Classification

Classification designations are based upon 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, as is clear from the following

subclauses. 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.

3A Classification by yield strength and 3B Classification by tensile strength and

47 J impact energy 27 J impact energy

The classification is divided into eight parts: The classification is divided into seven parts:

1) the first part gives a symbol indicating the 1) the first part gives a symbol indicating the

product/process to be identified; product/process to be identified;

2) the second part gives a symbol indicating the 2) the second part gives a symbol indicating the

strength and elongation of all-weld metal (see strength of all-weld metal (see Table 1B);

Table 1A);
3) the third part gives a symbol indicating the type

3) the third part gives a symbol indicating the of electrode covering, the type of current, and the

impact properties of all-weld metal (see Table 2A); welding position (see Table 4B);

4) the fourth part gives a symbol indicating the 4) the fourth part gives a symbol indicating the

chemical composition of all-weld metal (see chemical composition of all-weld metal (see

Table 3A); Table 3B);

5) the fifth part gives a symbol indicating the type 5) the fifth part gives a symbol indicating the

of electrode covering (see 4.5A); condition of post-weld heat treatment under which

the all-weld metal test was conducted (see 4.6B);
6) the sixth part gives a symbol indicating the

nominal electrode efficiency and type of current (see 6) the sixth part gives a symbol indicating that the

Table 5A); electrode has satisfied a requirement for 47 J impact
energy at the temperature normally used for the
7) the seventh part gives a symbol indicating the
27 J requirement;
welding position (see Table 6A);
7) the seventh part gives a symbol indicating the
8) the eighth part gives a symbol indicating the
diffusible hydrogen content of the deposited metal
diffusible hydrogen content of the deposited metal
(see Table 7).
(see Table 7).
2 © ISO 2009 – All rights reserved
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SIST EN ISO 2560:2010
ISO 2560:2009(E)

In order to promote the use of this International In order to promote the use of this International

Standard, the classification is split into two sections: Standard, the classification is split into two sections:

a) Compulsory section a) Compulsory section

This section includes the symbols for the type This section includes the symbols for the type of

of product, the strength and elongation, the product, the strength, the type of covering, the

impact properties, the chemical composition type of current, the welding position, the

and the type of covering, i.e. the symbols chemical composition and the condition of heat

defined in 4.1, 4.2A, 4.3A, 4.4A and 4.5A. treatment, i.e. the symbols defined in 4.1, 4.2B,

4.4B, 4.5B and 4.6B.
b) Optional section b) Optional section

This section includes the symbols for the This section includes the symbol for the optional

nominal electrode efficiency, the type of current, supplemental designator for 47 J impact

the welding positions for which the electrode is energy, i.e. the symbol defined in 4.3B; and the

suitable, and the symbol for diffusible hydrogen symbol for diffusible hydrogen content, i.e., the

content, i.e. the symbols defined in 4.7A, 4.8A symbol defined in 4.9.
and 4.9.

The designation (see Clause 11), compulsory section and any chosen elements of the optional section, shall

be used on packages and in the manufacturer's literature and data sheets. See Figure A.1 for a schematic

representation of the full designation of electrodes classified by yield strength and 47 J impact energy

(system A). See Figure A.2 for a schematic representation of the full designation of electrodes classified by

tensile strength and 27 J impact energy (system B).
4 Symbols and requirements
4.1 Symbol for the product/process

The symbol for the covered electrode used in the manual metal arc welding process shall be the letter E

placed at the beginning of the designation.
4.2 Symbols for strength and elongation of all-weld metal

4.2A Classification by yield strength and 4.2B Classification by tensile strength and

47 J impact energy 27 J impact energy

The symbols in Table 1A indicate the yield strength, The symbols in Table 1B indicate the tensile

tensile strength, and elongation of the all-weld metal strength of the all-weld metal in the as-welded

in the as-welded condition, determined in condition or in the post-weld heat-treated condition,

accordance with Clause 5. determined in accordance with Clause 5. The yield
strength and elongation requirements depend upon
the specific chemical composition, heat treatment
condition and coating type, as well as upon the
tensile strength requirements, as given for the
complete classification in Table 8B.
© ISO 2009 – All rights reserved 3
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SIST EN ISO 2560:2010
ISO 2560:2009(E)
Table 1A — Symbol for strength and elongation Table 1B — Symbol for strength of
of all-weld metal all-weld metal

(Classification by yield strength and 47 J impact (Classification by tensile strength and 27 J impact

energy) energy)
Minimum
Tensile Minimum
yield Minimum tensile strength
strength elongation
Symbol Symbol
strength
MPa MPa % MPa
35 355 440 to 570 22 43 430
38 380 470 to 600 20 49 490
42 420 500 to 640 20 55 550
46 460 530 to 680 20 57 570
50 500 560 to 720 18
For yield strength, the lower yield strength (R ) shall be
used when yielding occurs, otherwise the 0,2 % proof strength
(R ) shall be used.
p0,2
The gauge length is equal to five times the specimen
diameter.
4.3 Symbol for impact properties of all-weld metal

4.3A Classification by yield strength and 4.3B Classification by tensile strength and

47 J impact energy 27 J impact energy

The symbols in Table 2A indicate the temperature There is no specific symbol for impact properties.

at which an average impact energy of 47 J is The complete classification in Table 8B determines

achieved under the conditions given in Clause 5. the temperature at which an impact energy of 27 J

Three specimens shall be tested. Only one is achieved in the as-welded condition or in the

individual value may be lower than 47 J but not post-weld heat-treated condition under the

lower than 32 J. When an all-weld metal has been conditions given in Clause 5. Five test specimens

classified for a certain temperature, it automatically shall be tested. The lowest and highest values

covers any higher temperature in Table 2A. obtained shall be disregarded. Two of the three

remaining values shall be greater than the specified
27 J level, one of the three may be lower but shall
Table 2A — Symbol for impact properties
not be less than 20 J. The average of the three
of all-weld metal
remaining values shall be at least 27 J.
(Classification by yield strength and 47 J impact
energy)
The addition of the optional symbol U, immediately
after the symbol for condition of heat treatment,
Temperature for minimum average
indicates that the supplemental requirement of 47 J
impact energy of 47 J
Symbol
impact energy at the normal 27 J impact test
temperature has also been satisfied. For the 47 J
Z No requirement impact requirement, the number of specimens
tested and values obtained shall meet the
A +20
requirement of 4.3A.
0 0
2 −20
3 −30
4 −40
5 −50
6 −60
4 © ISO 2009 – All rights reserved
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SIST EN ISO 2560:2010
ISO 2560:2009(E)
4.4 Symbol for the chemical composition of all-weld metal

4.4A Classification by yield strength and 4.4B Classification by tensile strength and

47 J impact energy 27 J impact energy

The symbols in Table 3A indicate the chemical The symbols in Table 3B indicate the principal

composition of all-weld metal, determined in alloying elements, and sometimes the nominal alloy

accordance with Clause 6. level of the most significant alloy element, of all-weld

metal, determined in accordance with Clause 6. The
symbol for chemical composition does not
immediately follow the symbol for strength, but
follows the symbol for coating type. The complete
classification, given in Table 10B, determines the
exact chemical composition requirements for a
particular electrode classification.

Table 3A — Symbol for chemical composition Table 3B — Symbol for chemical composition

of all-weld metal of all-weld metal

(Classification by yield strength and 47 J impact (Classification by tensile strength and 27 J impact

energy) energy)
Chemical composition
Chemical composition
abc
% (by mass)
Alloy Alloy
symbol symbol
Principal alloy Nominal level
Mn Mo Ni
element(s) % (by mass)
No symbol, −1,
No symbol 2,0 — — Mn 1,0
−P1 or −P2
Mo 1,4 0,3 to 0,6 — −1M3 Mo 0,5
Mn 1,5
MnMo 1,4 to 2,0 0,3 to 0,6 —
−3M2
Mo 0,4
Mn 1,5
1Ni 1,4 — 0,6 to 1,2 −3M3
Mo 0,5
Mn1Ni 1,4 to 2,0 — 0,6 to 1,2 −N1 Ni 0,5
2Ni 1,4 — 1,8 to 2,6 −N2 Ni 1,0
Mn2Ni 1,4 to 2,0 — 1,2 to 2,6
−N3 Ni 1,5
3Ni 1,4 — 2,6 to 3,8
Mn 1,5
−3N3
Ni 1,5
1NiMo 1,4 0,3 to 0,6 0,6 to 1,2
Z Any other agreed composition −N5 Ni 2,5
a −N7 Ni 3,5
If not specified, Mo < 0,2; Ni < 0,3; Cr < 0,2; V < 0,05;
Nb < 0,05; Cu < 0,3.
−N13 Ni 6,5
Ni 1,0
Single values shown in the table mean maximum values.
−N2M3
Mo 0,5
Consumables for which the chemical composition is not
Ni 0,5
listed in the table may be symbolized similarly and prefixed by
−NC
Cu 0,4
the letter Z. The chemical composition ranges are not specified
and therefore two electrodes with the same Z-classification may
Cr 0,5
−CC
not be interchangeable.
Cu 0,4
Ni 0,2
−NCC Cr 0,6
Cu 0,5
Ni 0,6
−NCC1 Cr 0,6
Cu 0,5
Ni 0,3
−NCC2 Cr 0,2
Cu 0,5
−G Any other agreed composition
© ISO 2009 – All rights reserved 5
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SIST EN ISO 2560:2010
ISO 2560:2009(E)
4.5 Symbol for type of electrode covering

4.5A Classification by yield strength and 4.5B Classification by tensile strength and

47 J impact energy 27 J impact energy

The type of covering of a covered electrode The type of covering of a covered electrode

depends substantially on the types of slag-forming depends substantially on the types of slag-forming

components. The symbols indicating the covering components. The type of covering also determines

type shall be in accordance with Table 4A. the positions suitable for welding and the type of

current, in accordance with Table 4B.
Table 4A — Symbol for type of covering Table 4B — Symbol for type of covering
(Classification by yield strength (Classification by tensile strength
and 47 J impact energy) and 27 J impact energy)
...

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