Welding consumables - Covered electrodes for manual metal arc welding of non-alloy and fine grain steels - Classification (ISO 2560:2020)

This document specifies requirements for the 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 document is a combined specification providing for classification utilizing a system based on the yield strength and the average impact energy of 47 J of all-weld metal, or utilizing a system based on the tensile strength and the average impact energy of 27 J 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 of 47 J 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 of 27 J 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.

Schweißzusätze - Umhüllte Stabelektroden zum Lichtbogenhandschweißen von unlegierten Stählen und Feinkornstählen - Einteilung (ISO 2560:2020)

Dieses Dokument legt Anforderungen fest für die 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.
Dieses Dokument 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) Durch ein nachgestelltes „A“ gekennzeichnete Abschnitte, Unterabschnitte und Tabellen  sind nur für umhüllte Stabelektroden anwendbar, die nach der Streckgrenze und der durchschnittlichen Kerbschlagarbeit von 47 J des reinen Schweißgutes in diesem Dokument eingeteilt werden.
b) Durch ein nachgestelltes „A“ gekennzeichnete Abschnitte, Unterabschnitte und Tabellen sind nur für umhüllte Stabelektroden anwendbar, die nach der Zugfestigkeit und der durchschnittlichen Kerbschlagarbeit von 27 J des reinen Schweißgutes in diesem Dokument eingeteilt werden.
c) Abschnitte, Unterabschnitte und Tabellen, die weder ein nachgestelltes „A“ noch „B“ enthalten, sind für alle nach diesem Dokument eingeteilten umhüllten Stabelektroden anwendbar.

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 (ISO 2560:2020)

Le présent document 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.
Le présent document 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.
a) Les articles, les paragraphes 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 le présent document.
b) Les articles, les paragraphes 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 le présent document.
c) Les articles, les paragraphes et les tableaux ne comportant ni le suffixe «A» ni le suffixe «B» sont applicables à toutes les électrodes enrobées classifiées conformément au présent document.

Dodajni in pomožni materiali za varjenje - Oplaščene elektrode za ročno obločno varjenje nelegiranih in drobnozrnatih jekel - Razvrstitev (ISO 2560:2020)

General Information

Status
Published
Technical Committee
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
16-Sep-2020
Completion Date
16-Sep-2020

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SLOVENSKI STANDARD
SIST EN ISO 2560:2020
01-november-2020
Nadomešča:
SIST EN ISO 2560:2010
Dodajni in pomožni materiali za varjenje - Oplaščene elektrode za ročno obločno
varjenje nelegiranih in drobnozrnatih jekel - Razvrstitev (ISO 2560:2020)

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

and fine grain steels - Classification (ISO 2560:2020)
Schweißzusätze - Umhüllte Stabelektroden zum Lichtbogenhandschweißen von
unlegierten Stählen und Feinkornstählen - Einteilung (ISO 2560:2020)

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 (ISO 2560:2020)

Ta slovenski standard je istoveten z: EN ISO 2560:2020
ICS:
25.160.20 Potrošni material pri varjenju Welding consumables
SIST EN ISO 2560:2020 en,fr,de

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

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SIST EN ISO 2560:2020
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SIST EN ISO 2560:2020
EN ISO 2560
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2020
EUROPÄISCHE NORM
ICS 25.160.20 Supersedes EN ISO 2560:2009
English Version
Welding consumables - Covered electrodes for manual
metal arc welding of non-alloy and fine grain steels -
Classification (ISO 2560:2020)

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

alliés et des aciers à grains fins - Classification (ISO und Feinkornstählen - Einteilung (ISO 2560:2020)

2560:2020)
This European Standard was approved by CEN on 16 July 2020.

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-CENELEC 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-CENELEC Management

Centre has the same status as the official versions.

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

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

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 2560:2020 E

worldwide for CEN national Members.
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SIST EN ISO 2560:2020
EN ISO 2560:2020 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 2560:2020
EN ISO 2560:2020 (E)
European foreword

This document (EN ISO 2560:2020) has been prepared by Technical Committee ISO/TC 44 "Welding

and allied processes" in collaboration with Technical Committee CEN/TC 121 “Welding and allied

processes” 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 March 2021, and conflicting national standards shall

be withdrawn at the latest by March 2021.

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

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

This document supersedes EN ISO 2560:2009.

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,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,

Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of

North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the

United Kingdom.
Endorsement notice

The text of ISO 2560:2020 has been approved by CEN as EN ISO 2560:2020 without any modification.

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SIST EN ISO 2560:2020
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SIST EN ISO 2560:2020
INTERNATIONAL ISO
STANDARD 2560
Fourth edition
2020-08
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 2560:2020(E)
ISO 2020
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SIST EN ISO 2560:2020
ISO 2560:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
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SIST EN ISO 2560:2020
ISO 2560:2020(E)
Contents Page

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

Introduction ................................................................................................................................................................................................................................vi

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

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

3 Terms and definitions ..................................................................................................................................................................................... 2

4 Classification ............................................................................................................................................................................................................ 2

5 Symbols and requirements ........................................................................................................................................................................ 3

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

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

5.3 Symbol for impact properties of all-weld metal ......................................................................................................... 5

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

5.5 Symbol for type of electrode covering ................................................................................................................................ 7

5.6 Symbol for condition of post-weld heat-treatment of all-weld metal ..................................................... 9

5.7 Symbol for electrode efficiency and type of current ...........................................................................................10

5.8 Symbol for welding position ....................................................................................................................................................10

5.9 Symbol for diffusible hydrogen content of deposited metal ......... ................................................................11

6 Mechanical tests .................................................................................................................................................................................................11

6.1 Preheating and interpass temperatures ........................................................................................................................12

6.2 Pass sequence .......................................................................................................................................................................................14

7 Chemical analysis ..............................................................................................................................................................................................15

8 Fillet weld test ......................................................................................................................................................................................................20

9 Rounding procedure ......................................................................................................................................................................................22

10 Retests ..........................................................................................................................................................................................................................22

11 Technical delivery conditions ..............................................................................................................................................................22

12 Examples of designation ............................................................................................................................................................................23

Annex A (informative) Classification systems ..........................................................................................................................................25

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

strength and 47 J impact energy .......................................................................................................................................................28

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

strength and 27 J impact energy .......................................................................................................................................................30

Annex D (informative) Notes on diffusible hydrogen and the avoidance of cold cracking ........................33

Bibliography .............................................................................................................................................................................................................................34

© ISO 2020 – All rights reserved iii
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SIST EN ISO 2560:2020
ISO 2560:2020(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.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

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. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to

the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see

www .iso .org/ iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 44, Welding and allied processes,

Subcommittee SC 3, Welding consumables, in collaboration with the European Committee for

Standardization (CEN) Technical Committee CEN/TC 121, Welding and allied processes, in accordance

with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.

Official interpretations of ISO/TC 44 documents, where they exist, are available from this page: https://

committee .iso .org/ sites/ tc44/ home/ interpretation .html.

This fourth edition cancels and replaces the third edition (ISO 2560:2009), which has been technically

revised.
The main changes compared to the previous edition are as follows:
— all the references have been updated;

— throughout the document, “nominal electrode efficiency” now reads “electrode efficiency”;

— in 4B, “strength” has been clarified by changing to “tensile strength;

— in Table 3B, the “Nominal level” for Mn shown in the 1st row of the table for “No symbol, -1, -P1, or

–P2” was changed to 1,3;

— in Table 3B, a new footnote has been added regarding G classifications (similar to Table 3A);

— in Table 4B, a new footnote d to symbol “45” was added “Not including PF (vertical up)”;

— in Table 8B, the heading of the last column has been revised to read " Impact test temperature”;

— in Table 8B, NS (not specified) has been changed to NR (not required) and a new footnote c regarding

testing at lower temperatures has been added;
iv © ISO 2020 – All rights reserved
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SIST EN ISO 2560:2020
ISO 2560:2020(E)

— in Table 10B, E4918, E4918-1, E5516-3M3, E5516-N3 and E5516-N7 have been updated to match

values in AWS standards;
— in Clause 8, b has been changed to w for width in accordance with ISO 15792-1;

— in Clause 9, Rounding procedure has been updated to match current agreed wording;

— in Clause 12B, Example 1B, the %Mn was changed to 0,90 to better match the designation given in

the example;
© ISO 2020 – All rights reserved v
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SIST EN ISO 2560:2020
ISO 2560:2020(E)
Introduction

This document 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 document. The classification in accordance with system A is mainly

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

used around the Pacific Rim.

This document 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.
vi © ISO 2020 – All rights reserved
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SIST EN ISO 2560:2020
INTERNATIONAL STANDARD ISO 2560:2020(E)
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 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 document is a combined specification providing for classification utilizing a system based on the

yield strength and the average impact energy of 47 J of all-weld metal, or utilizing a system based on the

tensile strength and the average impact energy of 27 J 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 of

47 J 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 of

27 J 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.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements 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 filler materials and fluxes — 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 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 test

specimens in steel, nickel and nickel alloys

ISO 15792-3:2011, Welding consumables — Test methods — Part 3: Classification testing of positional

capacity 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

© ISO 2020 – All rights reserved 1
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SIST EN ISO 2560:2020
ISO 2560:2020(E)
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.

4A Classification by yield strength and 47 J 4B Classification by tensile strength and 27 J

impact energy 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 2) the second part gives a symbol indicating

the strength and elongation of all-weld metal the tensile strength of all-weld metal

(see Table 1A); (see Table 1B);

3) the third part gives a symbol indicating 3) the third part gives a symbol indicating

the impact properties of all-weld metal the type of electrode covering, the type
(see Table 2A); of current, and the welding position
(see Table 4B);
4) the fourth part gives a symbol indicating

the chemical composition of all-weld metal 4) the fourth part gives a symbol indicating

(see Table 3A); the chemical composition of all-weld metal
(see Table 3B);
5) the fifth part gives a symbol indicating the

type of electrode covering (see 5.5A); 5) the fifth part gives a symbol indicating the

condition of post-weld heat treatment under
6) the sixth part gives a symbol indicating the
which the all-weld metal test was conducted
electrode efficiency and type of current
(see 5.6B);
(see Table 5A);
6) the sixth part gives a symbol indicating that
7) the seventh part gives a symbol indicating
the electrode has satisfied a requirement
the welding position (see Table 6A);
for 47 J impact energy at the temperature
normally used for the 27 J requirement;
8) the eighth part gives a symbol indicating the
diffusible hydrogen content of the deposited
7) the seventh part gives a symbol indicating
metal (see Table 7).
the diffusible hydrogen content of the
deposited metal (see Table 7).
2 © ISO 2020 – All rights reserved
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SIST EN ISO 2560:2020
ISO 2560:2020(E)

In order to promote the use of this document, In order to promote the use of this document,

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

a) Compulsory section a) Compulsory section

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

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

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

type of covering, i.e. the symbols defined in 5.1, chemical composition and the condition of heat

5.2A, 5.3A, 5.4A and 5.5A. treatment, i.e. the symbols defined in 5.1, 5.2B,
5.4B, 5.5B and 5.6B.
b) Optional section b) Optional section

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

trode efficiency, the type of current, the welding supplemental designator for 47 J impact energy,

positions for which the electrode is suitable, and i.e. the symbol defined in 5.3B; and the symbol

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

the symbols defined in 5.7A, 5.8A and 5.9. defined in 5.9.

The designation (see Clause 12), compulsory section and any chosen elements of the optional section,

shall be used on packages and in the manufacturer's literature and data sheets. Figure A.1 gives

a schematic representation of the full designation of electrodes classified by yield strength and

47 J impact energy (system A). Figure A.2 gives a schematic representation of the full designation of

electrodes classified by tensile strength and 27 J impact energy (system B).
5 Symbols and requirements
5.1 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.
5.2 Symbols for strength and elongation of all-weld metal

5.2A Classification by yield strength and 47 J 5.2B Classification by tensile strength and

impact energy 27 J impact energy

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

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

all-weld metal in the as-welded condition, deter- condition or in the post-weld heat-treated con-

mined in accordance with Clause 6. dition, determined in accordance with Clause 6.

The yield strength and elongation requirements
depend on the specific chemical composition,
heat treatment condition and coating type, as
well as on the tensile strength requirements, as
given for the complete classification in Table 8B.
© ISO 2020 – All rights reserved 3
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SIST EN ISO 2560:2020
ISO 2560:2020(E)

Table 1A — Symbol for strength and elonga- Table 1B — Symbol for strength of all-weld

tion of all-weld metal metal

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

impact energy) impact energy)
Minimum
Tensile Minimum Minimum tensile
yield
strength elongation strength
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
p0,2
be used.
The gauge length is equal to five times the
specimen diameter.
4 © ISO 2020 – All rights reserved
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SIST EN ISO 2560:2020
ISO 2560:2020(E)
5.3 Symbol for impact properties of all-weld metal

5.3A Classification by yield strength and 5.3B Classification by tensile strength and

47 J impact energy 27 J impact energy

The symbols in Table 2A indicate the tempera- There is no specific symbol for impact prop-

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

achieved under the conditions given in Clause 6. determines the temperature at which an impact

Three specimens shall be tested. Only one energy of 27 J is achieved in the as-welded con-

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

lower than 32 J. When an all-weld metal has been under the conditions given in Clause 6. Five test

classified for a certain temperature, it automati- specimens shall be tested. The lowest and highest

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

three remaining values shall be greater than the
Table 2A — Symbol for impact properties of
specified 27 J level, one of the three may be lower
all-weld metal
but shall not be less than 20 J. The average of the
(Classification by yield strength and 47 J
three remaining values shall be at least 27 J.
impact energy)
The addition of the optional symbol U, immedi-
ately after the symbol for condition of heat treat-
Temperature for minimum
ment, indicates that the supplemental require-
average impact energy of 47 J
Symbol
ment of 47 J impact energy at the normal 27 J
impact test temperature has also been satisfied.
For the 47 J impact requirement, the number of
Z No requirement
specimens tested and values obtained shall meet
the requirement of 5.3A.
A +20
0 0
2 −20
3 −30
4 −40
5 −50
6 −60
5.4 Symbol for the chemical composition of all-weld metal
5.4A Class
...

SLOVENSKI STANDARD
oSIST prEN ISO 2560:2019
01-december-2019

Dodajni materiali za varjenje - Oplaščene elektrode za obločno varjenje nelegiranih

in drobnozrnatih jekel - Razvrstitev (ISO/DIS 2560:2019)

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

and fine grain steels - Classification (ISO/DIS 2560:2019)
Schweißzusätze - Umhüllte Stabelektroden zum Lichtbogenhandschweißen von
unlegierten Stählen und Feinkornstählen - Einteilung (ISO/DIS 2560:2019)

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 (ISO/DIS

2560:2019)
Ta slovenski standard je istoveten z: prEN ISO 2560
ICS:
25.160.20 Potrošni material pri varjenju Welding consumables
oSIST prEN ISO 2560:2019 en,fr,de

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

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oSIST prEN ISO 2560:2019
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oSIST prEN ISO 2560:2019
DRAFT INTERNATIONAL STANDARD
ISO/DIS 2560
ISO/TC 44/SC 3 Secretariat: ANSI
Voting begins on: Voting terminates on:
2019-10-17 2020-01-09
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
ICS: 25.160.20
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 2560:2019(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. ISO 2019
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oSIST prEN ISO 2560:2019
ISO/DIS 2560:2019(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2019

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
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Email: copyright@iso.org
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Published in Switzerland
ii © ISO 2019 – All rights reserved
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oSIST prEN ISO 2560:2019
ISO/DIS 2560:2019(E)
Contents

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

Introduction ................................................................................................................................................................ vi

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

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

3 Terms and definitions ....................................................................................................................................... 2

4 Classification ........................................................................................................................................................ 2

5 Symbols and requirements ............................................................................................................................. 4

5.1 Symbol for the product/process ................................................................................................................... 4

5.2 Symbols for strength and elongation of all-weld metal ......................................................................... 4

5.3 Symbol for impact properties of all-weld metal ....................................................................................... 5

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

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

5.6 Symbol for condition of post-weld heat-treatment of all-weld metal ............................................... 8

5.7 Symbol for nominal electrode efficiency and type of current .............................................................. 8

5.8 Symbol for welding position ........................................................................................................................... 9

5.9 Symbol for diffusible hydrogen content of deposited metal ................................................................ 9

6 Mechanical tests .............................................................................................................................................. 10

6.1 Preheating and interpass temperatures .................................................................................................. 10

6.2 Pass sequence ................................................................................................................................................... 13

7 Chemical analysis ............................................................................................................................................ 14

8 Fillet weld test .................................................................................................................................................. 17

9 Rounding procedure ...................................................................................................................................... 19

10 Retests ................................................................................................................................................................ 19

11 Technical delivery conditions ..................................................................................................................... 19

12 Examples of designation ............................................................................................................................... 20

Annex A (informative) Classification systems .............................................................................................. 21

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

strength and 47 J impact energy .......................................................................................................... 24

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

tensile strength and 27 J impact energy ............................................................................................ 26

Annex D (informative) Notes on diffusible hydrogen and the avoidance of cold cracking ............ 29

Bibliography ............................................................................................................................................................. 30

© ISO 2019 – All rights reserved iii
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oSIST prEN ISO 2560:2019
ISO/DIS 2560:2019(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.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

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. Details of any

patent rights identified during the development of the document will be in the Introduction and/or on

the ISO list of patent declarations received (see www.iso.org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the World

Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see

www.iso.org/iso/foreword.html.

This document was prepared by Technical Committee ISO/TC 44, Welding and allied processes],

Subcommittee SC 3, Welding consumables.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www.iso.org/members.html.

Official interpretations of TC 44 documents, where they exist, are available from this page:

https://committee.iso.org/sites/tc44/home/interpretation.html.

This fourth edition cancels and replaces the third edition (ISO 2560:2009), which has been technically

revised.
The main changes compared to the previous edition are as follows:

— draft updated to latest ISO template and styles, e.g. AC for a.c. and DC for d.c.

— all references updated to latest editions and titles

— Table 3B: alloy symbol “No symbol, −1, −P1 or −P2”, nominal level (% by mass) for Mn is now 1,3

— Table 4B: footnote “d” added to the “All” for symbol 45 to state: “Not including PF (vertical up)”

— Table 5A: Nominal electrode efficiency change to Electrode efficiency

— Table 10B: Maximum Si values have been changed for E4918 and E4918-1, E5516-3M3, E5516-N7

— Table 10B: Maximum Mo for E5516-N3 changed to N.S.
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oSIST prEN ISO 2560:2019
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Introduction

This document 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 document. The classification in accordance with system A is mainly

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

used around the Pacific Rim.

This Document 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.
vi © ISO 2019 – All rights reserved
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oSIST prEN ISO 2560:2019
DRAFT INTERNATIONAL STANDARD ISO/DIS 2560:2019(E)
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 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 document 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) Clauses, subclauses 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 Document.

b) Clauses, subclauses 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 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.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements 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 filler materials and fluxes — 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 arc weld metal

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

ISO 6947, Welding and allied processes — Welding positions

ISO 13916, Welding — Measurement of preheating temperature, interpass temperature and preheat

maintenance temperature
ISO 14344, Welding consumables — Procurement of filler materials and fluxes

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

specimens in steel, nickel and nickel alloys. Amended by ISO 15792-1:2000/Amd 1:2011

ISO 15792-3:2011, Welding consumables — Test methods — Part 3: Classification testing of positional

capacity and root penetration of welding consumables in a fillet weld
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oSIST prEN ISO 2560:2019
ISO/DIS 2560:2019(E)

ISO 80000-1, 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 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.
2 © ISO 2019 – All rights reserved
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4A Classification by yield strength and 47 J 4B Classification by tensile strength and 27 J

impact energy 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 2) the second part gives a symbol indicating

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

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

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

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

Table 2A);
4) the fourth part gives a symbol indicating

4) the fourth part gives a symbol indicating the chemical composition of all-weld metal (see

the chemical composition of all-weld metal (see Table 3B);
Table 3A);
5) the fifth part gives a symbol indicating the

5) the fifth part gives a symbol indicating the condition of post-weld heat treatment under

type of electrode covering (see 5.5A); which the all-weld metal test was conducted

(see 5.6B);
6) the sixth part gives a symbol indicating the

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

(see Table 5A); that the electrode has satisfied a requirement for
47 J impact energy at the temperature normally
7) the seventh part gives a symbol indicating
used for the 27 J requirement;
the welding position (see Table 6A);
7) the seventh part gives a symbol indicating
8) the eighth part gives a symbol indicating
the diffusible hydrogen content of the deposited
the diffusible hydrogen content of the deposited
metal (see Table 7).
metal (see Table 7).

In order to promote the use of this Document, the In order to promote the use of this Document, the

classification is split into two sections: classification is split into two sections:

a) Compulsory section a) Compulsory section

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

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

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

of covering, i.e. the symbols defined in 5.1, 5.2A, composition and the condition of heat treatment,

5.3A, 5.4A and 5.5A. i.e. the symbols defined in 5.1, 5.2B, 5.4B, 5.5B and
5.6B.
b) Optional section b) Optional section

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

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

welding positions for which the electrode is i.e. the symbol defined in 5.3B; and the symbol for

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

content, i.e. the symbols defined in 5.7A, 5.8A and defined in 5.9.
5.9.

The designation (see Clause 12), 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).
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oSIST prEN ISO 2560:2019
ISO/DIS 2560:2019(E)
5 Symbols and requirements
5.1 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.
5.2 Symbols for strength and elongation of all-weld metal

5.2A Classification by yield strength and 5.2B Classification by tensile strength and

47 J impact energy 27 J impact energy

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

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

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

determined in accordance with Clause 6. condition, determined in accordance with
Clause 6. 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.
Table 1A — Symbol for strength and Table 1B — Symbol for strength of all-weld
elongation of all-weld metal metal

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

energy) energy)
Minimum Minimum
Tensile Minimum tensile
yield elongation
strength strength
a b
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.
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5.3 Symbol for impact properties of all-weld metal

5.3A Classification by yield strength and 5.3B 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

achieved under the conditions given in Clause 6. determines the temperature at which an impact

Three specimens shall be tested. Only one energy of 27 J is achieved in the as-welded

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

lower than 32 J. When an all-weld metal has been condition under the conditions given in Clause 6.

classified for a certain temperature, it Five test specimens shall be tested. The lowest

automatically covers any higher temperature in and highest values obtained shall be disregarded.

Table 2A. Two of the three remaining values shall be greater
than the specified 27 J level, one of the three may
Table 2A — Symbol for impact properties
be lower but shall not be less than 20 J. The
of all-weld metal
average of the three remaining values shall be at
(Classification by yield strength and 47 J impact
least 27 J.
energy)
The addition of the optional symbol U,
immediately after the symbol for condition of heat
Temperature for minimum average
impact energy of 47 J
Symbol treatment, indicates that the supplemental
°C requirement of 47 J impact energy at the normal
27 J impact test temperature has also been
Z No requirement
satisfied. For the 47 J impact requirement, the
A +20
number of specimens tested and values obtained
0 0
shall meet the requirement of 5.3A.
2 −20
3 −30
4 −40
5 −50
6 −60
5.4 Symbol for the chemical composition of all-weld metal

5.4A Classification by yield strength and 5.4B 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

accordance with Clause 7. alloy level of the most significant alloy element, of
all-weld metal, determined in accordance with
Clause 7. 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.
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oSIST prEN ISO 2560:2019
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Table 2A — 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 1,3
−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
Single values shown in the table mean maximum Ni 1,0
−N2M3
values. Mo 0,5
Ni 0,5
Consumables for which the chemical composition
−NC
Cu 0,4
is not listed in the table may be symbolized similarly
and prefixed by the letter Z. The chemical
composition ranges are not specified and therefore
Cr 0,5
−CC
two electrodes with the same Z-classification may not
Cu 0,4
be interchangeable.
Ni 0,2
−NCC Cr 0,6
Cu 0,5
Ni 0,6
−NCC1 Cr 0,6
Cu 0,5
0,3
−NCC2 Cr 0,2
Cu 0,5
−G Any other agreed composition
5.5 Symbol for type of electrode covering

5.5A Classification by yield strength and 5.5B 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- depends substantially on the types of slag-

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

covering type shall be in accordance with determines the positions suitable for welding and

Table 4A. the type of current, in accordance with Table 4B.
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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)
Type of Welding Type of
Symbol Type of covering Symbol
a b
covering positions current
AC and
A Acid covering 03 Rutile basic All
DC (±)
C Cellulosic covering 10 Cellulosic All DC (+)
AC and
R Rutile covering 11 Cellulosic All
DC (+)
AC and
RR Rutile thick covering 12 Rutile All
DC (−)
AC and
RC Rutile-cellulosic covering 13 Rutile All
DC (±)
Rutile + iron AC and
RA Rutile-acid covering 14 All
powder DC (±)
RB Rutile-basic covering 15 Basic All DC (+)
AC and
B Basic covering 16 Basic All
DC (+)
NOTE A description of the characteristics of each
Basic + iron AC and
18 All
powder DC (+)
of the types of covering is given in Annex B.
AC and
19 Ilmenite All
DC (±)
AC and
20 Iron oxide PA, PB
DC (−)
Rutile + iron AC and
24 PA, PB
powder DC (±)
Iron oxide + AC and
27 PA, PB
iron powder DC (±)
Basic + iron AC and
28 PA, PB, PC
powder DC (+)
Manufacturer's
40 Not specified
recommendations
45 Basic All DC (+)
AC and
48 Basic All
DC (+)
NOTE A description of the characteristics of each
of the types of covering is given in Annex C.
Positions are defined in ISO 6947. PA = flat, PB =
horizontal vertical fillet, PC = horizontal, PG = vertical
down.
Alternating current = AC; direct current = DC
The indication “all positions” may or may not
include vertical down welding. This shall be specified
in the manufacturer's literature.
Not including PF (vertical up)
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...

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