SIST EN ISO 26304:2011
(Main)Welding consumables - Solid wire electrodes, tubular cored electrodes and electrode-flux combinations for submerged arc welding of high strength steels - Classification (ISO 26304:2011)
Welding consumables - Solid wire electrodes, tubular cored electrodes and electrode-flux combinations for submerged arc welding of high strength steels - Classification (ISO 26304:2011)
This International Standard specifies requirements for classification of solid wire electrodes, tubular cored electrodes, and electrode-flux combinations (the all-weld metal deposits) in the as-welded condition and in the post-weld heat-treated condition for submerged arc welding of high strength steels with a minimum yield strength greater than 500 MPa or a minimum tensile strength greater than 570 MPa. One flux can be tested and classified with different electrodes. One electrode can be tested and classified with different fluxes. The solid wire electrode is also classified separately based on its chemical composition. This International Standard is a combined specification providing for classification utilizing a system based upon the yield strength and average impact energy of 47 J for the all-weld metal, or utilizing a system based upon the tensile strength and average impact energy of 27 J for the all-weld metal. a) Clauses, subclauses and tables which carry the suffix letter “A” are applicable only to solid wire electrodes, tubular cored electrodes and the all-weld metal deposits classified to the system based upon the yield strength and the average impact energy of 47 J for the all-weld metal obtained with electrodeflux combinations in accordance with this International Standard. b) Clauses, subclauses and tables which carry the suffix letter “B” are applicable only to solid wire electrodes, tubular cored electrodes and the all-weld metal deposits classified to the system based upon the tensile strength and the average impact energy of 27 J for the all-weld metal obtained with electrodeflux combinations in accordance with this International Standard. c) Clauses, subclauses and tables which do not have either the suffix letter “A” or the suffix letter “B” are applicable to all solid wire electrodes, tubular cored electrodes and electrode-flux combinations classified in accordance with this International Standard. For comparison purposes, some tables include requirements for electrodes classified in accordance with both systems, placing individual electrodes from the two systems, which are similar in composition and properties, on adjacent lines in the particular table. In a particular line of the table that is mandatory in one system, the symbol for the similar electrode from the other system is indicated in parentheses. By appropriate restriction of the formulation of a particular electrode, it is often, but not always, possible to produce an electrode that can be classified in both systems, in which case the electrode, or its packaging, may be marked with the classification in either or both systems.
Schweißzusätze - Massivdrahtelektroden, Fülldrahtelektroden und Draht-Pulver-Kombinationen zum Unterpulverschweißen von hochfesten Stählen - Einteilung (ISO 26304:2011)
Diese Internationale Norm legt Anforderungen zur Einteilung von Massivdrahtelektroden, Fülldrahtelektroden
und Draht-Pulver-Kombinationen (reines Schweißgut) im Schweißzustand und nach Wärmenachbehandlung
zum Unterpulverschweißen von hochfesten Stählen mit einer Mindeststreckgrenze über 500 MPa oder einer Mindestzugfestigkeit über 570 MPa fest. Ein Pulver kann mit verschiedenen Massivdraht-/Fülldrahtelektroden geprüft und eingestuft werden. Eine Drahtelektrode kann mit verschiedenen Schweißpulvern geprüft und eingeteilt werden. Die Massivdrahtelektrode kann auch gesondert nach ihrer chemischen Zusammensetzung
eingeteilt werden.
Diese Norm enthält eine gemeinsame Spezifikation zur Einteilung entweder nach der Streckgrenze und der durchschnittlichen Kerbschlagarbeit von 47 J des reinen Schweißgutes oder nach der Zugfestigkeit und der durchschnittlichen Kerbschlagarbeit von 27 J des reinen Schweißgutes.
a) Abschnitte, Unterabschnitte und Tabellen, gekennzeichnet durch ein nachgestelltes „A“, gelten nur für Massivdrahtelektroden, Fülldrahtelektroden und reines Schweißgut, die nach der Streckgrenze und der durchschnittlichen Kerbschlagarbeit von 47 J des reinen Schweißgutes eingeteilt werden, das mit einer Draht-Pulver-Kombination nach dieser Internationalen Norm hergestellt wurde.
b) Abschnitte, Unterabschnitte und Tabellen, gekennzeichnet durch ein nachgestelltes „B“, gelten nur für Massivdrahtelektroden, Fülldrahtelektroden und reines Schweißgut, die nach der Zugfestigkeit und der durchschnittlichen Kerbschlagarbeit von 27 J des reinen Schweißgutes eingeteilt werden, das mit einer Draht-Pulver-Kombination nach dieser Internationalen Norm hergestellt wurde.
c) Abschnitte, Unterabschnitte und Tabellen, die kein nachgestelltes „A“ oder „B“ enthalten, gelten für alle
Massivdrahtelektroden, Fülldrahtelektroden und Draht-Pulver-Kombinationen, die nach dieser Internatio-
nalen Norm eingeteilt werden.
Produits consommables pour le soudage - Fils-électrodes pleins, fils-électrodes fourrés et couples électrodes-flux pour le soudage à l'arc sous flux des aciers à haute résistance - Classification (ISO 26304:2011)
L'ISO 26304:2011 spécifie les exigences relatives à la classification des fils-électrodes pleins, des fils-électrodes fourrés et des couples fils-flux (dépôts en métal fondu hors dilution) à l'état brut de soudage ou après traitement thermique après soudage des aciers à haute résistance ayant une limite d'élasticité minimale supérieure à 500 MPa ou une résistance à la traction minimale supérieure à 570 MPa. Un flux peut être soumis à essai et être classifié avec différents fils-électrodes. Un fil-électrode peut être soumis à essai et être classifié avec différents flux. Le fil-électrode plein est également classifié séparément d'après sa composition chimique.
L'ISO 26304:2011 constitue 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 qui portent le suffixe «A» ne sont applicables qu'aux fils-électrodes pleins, aux fils-électrodes fourrés et dépôts en métal fondu hors dilution classifiés 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 obtenu avec des couples fils-flux conformément à l'ISO 26304:2011.
b) Les articles, les paragraphes et les tableaux qui portent le suffixe «B» ne sont applicables qu'aux fils-électrodes pleins, aux fils-électrodes fourrés et dépôts en métal fondu hors dilution classifiés 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 obtenu avec des couples fils-flux conformément à l'ISO 26304:2011.
c) Les articles, les paragraphes et les tableaux qui ne portent ni le suffixe «A» ni le suffixe «B» sont applicables à tous les fils-électrodes pleins, fils-électrodes fourrés et couples fil-flux classifiés conformément à l'ISO 26304:2011.
À des fins de comparaison, certains tableaux comportent des exigences pour des électrodes classifiées selon les deux systèmes, en plaçant des électrodes individuelles issues des deux systèmes, semblables en composition et en propriétés, sur des lignes adjacentes du tableau particulier. Sur une ligne particulière du tableau, obligatoire pour un système, le symbole pour l'électrode semblable dans l'autre système est indiqué entre parenthèses. Selon une restriction appropriée de la formulation d'une électrode particulière, il est souvent mais pas toujours possible de produire une électrode qui peut être classifiée selon les deux systèmes, auquel cas l'électrode, ou son emballage, peut être marquée avec la classification de l'un ou l'autre système.
Dodajni in potrošni materiali za varjenje - Žice, strženske žice in kombinacije žic in praškov za varjenje visokotrdnih jekel po EPP - Razvrstitev (ISO 26304:2011)
Ta mednarodni standard določa zahteve za razvrstitev žic, strženskih žic in kombinacije žic/praškov (depozitov čistega vara) v varjenem stanju in s toplotno obdelavo po varjenju pri obločnem varjenju visokotrdnih jekel z minimalno mejo prožnosti nad 500 MPa ali minimalno natezno trdnostjo nad 570 MPa. En prašek je lahko preskušen in razvrščen z različnimi žicami. Ena žica je lahko preskušena in razvrščena z različnimi praški. Žica se razvrsti tudi ločeno na osnovi kemične sestave. 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) Točke, podtočke in preglednice, ki so označene z dodatno črko A, veljajo le za žice, strženske žice in depozite čistega vara, razvrščene po sistemu na osnovi meje prožnosti in povprečne udarne energije čistega vara 47 J, dobljene s kombinacijami žic/praškov v skladu s tem mednarodnim standardom. b) Točke, podtočke in preglednice, ki so označene z dodatno črko B, veljajo le za žice, strženske žice in depozite čistega vara, razvrščene po sistemu na osnovi natezne trdnosti in povprečne udarne energije čistega vara 27 J, dobljene s kombinacijami žic/praškov v skladu s tem mednarodnim standardom. c) Točke, podtočke in preglednice brez dodatne črke A ali B veljajo za vse žice, strženske žice in kombinacije žic/praškov, razvrščene v skladu s tem mednarodnim standardom. V primerjalne namene nekatere preglednice vključujejo zahteve za žice, razvrščene v skladu z obema sistemoma, pri čemer so posamezne žice iz obeh sistemov, podobne po sestavi in lastnostih, v preglednici navedene v sosednjih vrsticah. V določeni vrstici preglednice, ki je obvezna v enem sistemu, je v oklepaju naveden simbol za podobno žico iz drugega sistema. Z ustrezno omejitvijo formulacije določene žice je pogosto, a ne vedno, mogoče narediti žico, ki se lahko uvrsti v oba sistema, in v tem primeru se žica ali njena embalaža lahko označi po klasifikaciji enega ali obeh sistemov.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 26304:2011
01-oktober-2011
1DGRPHãþD
SIST EN ISO 26304:2011
Dodajni in potrošni materiali za varjenje - Žice, strženske žice in kombinacije žic in
praškov za varjenje visokotrdnih jekel po EPP - Razvrstitev (ISO 26304:2011)
Welding consumables - Solid wire electrodes, tubular cored electrodes and electrode-flux
combinations for submerged arc welding of high strength steels - Classification (ISO
26304:2011)
Schweißzusätze - Massivdrahtelektroden, Fülldrahtelektroden und Draht-Pulver-
Kombinationen zum Unterpulverschweißen von hochfesten Stählen - Einteilung (ISO
26304:2011)
Produits consommables pour le soudage - Fils-électrodes pleins, fils-électrodes fourrés
et couples électrodes-flux pour le soudage à l'arc sous flux des aciers à haute résistance
- Classification (ISO 26304:2011)
Ta slovenski standard je istoveten z: EN ISO 26304:2011
ICS:
25.160.20 Potrošni material pri varjenju Welding consumables
SIST EN ISO 26304:2011 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN ISO 26304:2011
---------------------- Page: 2 ----------------------
SIST EN ISO 26304:2011
EUROPEAN STANDARD
EN ISO 26304
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2011
ICS 25.160.20 Supersedes EN ISO 26304:2009
English Version
Welding consumables - Solid wire electrodes, tubular cored
electrodes and electrode-flux combinations for submerged arc
welding of high strength steels - Classification (ISO 26304:2011)
Produits consommables pour le soudage - Fils-électrodes Schweißzusätze - Massivdrahtelektroden,
pleins, fils-électrodes fourrés et couples électrodes-flux Fülldrahtelektroden und Draht-Pulver-Kombinationen zum
pour le soudage à l'arc sous flux des aciers à haute Unterpulverschweißen von hochfesten Stählen - Einteilung
résistance - Classification (ISO 26304:2011) (ISO 26304:2011)
This European Standard was approved by CEN on 11 July 2011.
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, 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
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 26304:2011: E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 26304:2011
EN ISO 26304:2011 (E)
Contents Page
Foreword .3
2
---------------------- Page: 4 ----------------------
SIST EN ISO 26304:2011
EN ISO 26304:2011 (E)
Foreword
This document (EN ISO 26304:2011) 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 February 2012, and conflicting national standards shall be withdrawn
at the latest by February 2012.
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 26304:2009.
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, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 26304:2011 has been approved by CEN as a EN ISO 26304:2011 without any modification.
3
---------------------- Page: 5 ----------------------
SIST EN ISO 26304:2011
---------------------- Page: 6 ----------------------
SIST EN ISO 26304:2011
INTERNATIONAL ISO
STANDARD 26304
Second edition
2011-08-01
Welding consumables — Solid wire
electrodes, tubular cored electrodes and
electrode-flux combinations for
submerged arc welding of high strength
steels — Classification
Produits consommables pour le soudage — Fils-électrodes pleins, fils-
électrodes fourrés et couples électrodes-flux pour le soudage à l'arc
sous flux des aciers à haute résistance — Classification
Reference number
ISO 26304:2011(E)
©
ISO 2011
---------------------- Page: 7 ----------------------
SIST EN ISO 26304:2011
ISO 26304:2011(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2011
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.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2011 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 26304:2011
ISO 26304:2011(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 or process .3
4.2 Symbols for the tensile properties of the all-weld metal deposit.3
4.3 Symbol for the impact properties of the all-weld metal .4
4.4 Symbol for the type of welding flux.5
4.5 Symbol for the chemical composition of solid wire electrodes and of the all-weld metal
from tubular cored electrode-flux combinations .5
4.6 Symbol for the post-weld heat treatment.11
4.7 Symbol for hydrogen content of deposited metal .12
5 Mechanical tests.13
5.1 Tensile and impact tests.13
5.2 Preheating and interpass temperature.13
5.3 Welding conditions and pass sequence.13
6 Chemical analysis .14
7 Rounding procedure .14
8 Retests.15
9 Technical delivery conditions .15
10 Examples of designation .15
Annex A (informative) Possible risk of weld metal hydrogen cracking .17
Bibliography.18
© ISO 2011 – All rights reserved iii
---------------------- Page: 9 ----------------------
SIST EN ISO 26304:2011
ISO 26304:2011(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 26304 was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee
SC 3, Welding consumables.
This second edition cancels and replaces the first edition (ISO 26304:2008), of which it constitutes a minor
revision. It also incorporates the Technical Corrigendum ISO 26304:2008/Cor.1:2009.
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 2011 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 26304:2011
ISO 26304:2011(E)
Introduction
This International Standard recognizes that there are two somewhat different approaches in the global market
to classifying a given wire electrode, tubular cored electrode, and electrode-flux combination, 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
[3]
Standard. The classification in accordance with system A is mainly based on EN 14295 . The classification in
accordance with system B is mainly based upon standards used around the Pacific Rim. Future revisions aim
to merge the two approaches into a single classification system.
This International Standard provides a classification for the designation of solid wire electrodes in terms of
their chemical composition, tubular cored electrodes in terms of the deposit composition obtained with a
particular submerged arc flux, and, where required, electrode-flux combinations in terms of the yield strength,
tensile strength, elongation, and impact properties of the all-weld metal deposit. The ratio of yield to tensile
strength of weld metal is generally higher than that of parent material. 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 material. Thus, where the application requires matching tensile strength,
selection of the consumable should be made by reference to column 3 of Table 1A or Table 1B, as
appropriate.
Although combinations of electrodes and fluxes supplied by individual companies may have the same
classification, the combination of an electrode with a flux from one manufacturer versus the flux from another
manufacturer, both fluxes having the same classification, may not be interchangeable unless verified in
accordance with this International Standard. Two tubular cored wires of the same classification may likewise
produce different results with the same flux.
The mechanical properties of the all-weld metal test specimens used to classify the electrode-flux
combinations vary from those obtained in production joints because of differences in welding procedures such
as electrode size, width of weave, welding position, and material composition.
© ISO 2011 – All rights reserved v
---------------------- Page: 11 ----------------------
SIST EN ISO 26304:2011
---------------------- Page: 12 ----------------------
SIST EN ISO 26304:2011
INTERNATIONAL STANDARD ISO 26304:2011(E)
Welding consumables — Solid wire electrodes, tubular cored
electrodes and electrode-flux combinations for submerged arc
welding of high strength steels — Classification
1 Scope
This International Standard specifies requirements for classification of solid wire electrodes, tubular cored
electrodes, and electrode-flux combinations (the all-weld metal deposits) in the as-welded condition and in the
post-weld heat-treated condition for submerged arc welding of high strength steels with a minimum yield
strength greater than 500 MPa or a minimum tensile strength greater than 570 MPa. One flux can be tested
and classified with different electrodes. One electrode can be tested and classified with different fluxes. The
solid wire electrode is also classified separately based on its chemical composition.
This International Standard is a combined specification providing for classification utilizing a system based
upon the yield strength and average impact energy of 47 J for the all-weld metal, or utilizing a system based
upon the tensile strength and average impact energy of 27 J for the all-weld metal.
a) Clauses, subclauses and tables which carry the suffix letter “A” are applicable only to solid wire
electrodes, tubular cored electrodes and the all-weld metal deposits classified to the system based upon
the yield strength and the average impact energy of 47 J for the all-weld metal obtained with electrode-
flux combinations in accordance with this International Standard.
b) Clauses, subclauses and tables which carry the suffix letter “B” are applicable only to solid wire
electrodes, tubular cored electrodes and the all-weld metal deposits classified to the system based upon
the tensile strength and the average impact energy of 27 J for the all-weld metal obtained with electrode-
flux combinations in accordance with this International Standard.
c) Clauses, subclauses and tables which do not have either the suffix letter “A” or the suffix letter “B” are
applicable to all solid wire electrodes, tubular cored electrodes and electrode-flux combinations classified
in accordance with this International Standard.
For comparison purposes, some tables include requirements for electrodes classified in accordance with both
systems, placing individual electrodes from the two systems, which are similar in composition and properties,
on adjacent lines in the particular table. In a particular line of the table that is mandatory in one system, the
symbol for the similar electrode from the other system is indicated in parentheses. By appropriate restriction of
the formulation of a particular electrode, it is often, but not always, possible to produce an electrode that can
be classified in both systems, in which case the electrode, or its packaging, may be marked with the
classification in either or both systems.
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 filler materials and fluxes — Type of
product, dimensions, tolerances and markings
ISO 3690, Welding and allied processes — Determination of hydrogen content in arc weld metal
© ISO 2011 – All rights reserved 1
---------------------- Page: 13 ----------------------
SIST EN ISO 26304:2011
ISO 26304:2011(E)
ISO 6847, Welding consumables — Deposition of a weld metal pad for chemical analysis
ISO 13916, Welding — Guidance on the measurement of preheating temperature, interpass temperature and
preheat maintenance temperature
ISO 14174, Welding consumables — Fluxes for submerged arc welding and electroslag welding —
Classification
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
ISO 80000-1:2009, 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-flux combination. The two designation
approaches include additional designators for the chemical composition of a solid wire electrode or the
chemical composition of the all-weld metal deposit obtained with a tubular cored electrode and a particular flux.
The two designation approaches include additional designators for some other classification requirements, but
not all, as is clear from the following clauses. A given commercial product may be classified to the
classification requirements in both systems; then either or both classification designations may be used for the
product.
The classification includes the all-weld metal properties obtained with a specific electrode-flux combination as
given in 3A and 3B. A solid wire electrode shall be classified in accordance with its chemical composition in
Table 3.
A tubular cored electrode shall be classified in accordance with the all-weld metal deposit composition in
Table 4, obtained with a particular flux.
When the solid wire electrode or tubular cored electrode is classified in combination with a flux for submerged
arc welding, the classification shall be prefixed with a symbol in accordance with Clause 4 as appropriate.
3A Classification by yield strength and 3B Classification by tensile strength
47 J impact energy and 27 J impact energy
The classification is divided into seven parts: The classification is divided into six parts:
1) the first part gives a symbol indicating the 1) the first part gives a symbol indicating the product
product or process to be identified; or process to be identified;
2) the second part gives a symbol indicating the 2) the second part gives a symbol indicating the
tensile properties of the all-weld metal (see strength and elongation of the the all-weld metal
Table 1A); in either the as-welded or the post-weld
heat-treated condition (see Table 1B);
3) the third part gives a symbol indicating the 3) the third part gives a symbol indicating the impact
impact properties of the all-weld metal (see properties of the all-weld metal in the same
Table 2); condition as specified for the tensile strength (see
Table 2). The letter “U” after this designator
indicates that the deposit meets an average
optional requirement of 47 J at the designated
impact test temperature;
2 © ISO 2011 – All rights reserved
---------------------- Page: 14 ----------------------
SIST EN ISO 26304:2011
ISO 26304:2011(E)
4) the fourth part gives a symbol indicating the type 4) the fourth part gives a symbol indicating the type
of flux used (see 4.4); of flux used (see 4.4);
5) the fifth part gives a symbol indicating the 5) the fifth part gives a symbol indicating the
chemical composition of the solid wire electrode chemical composition of the solid wire electrode
used (see Table 3) or of the all-weld metal used (see Table 3), or of the all-weld metal
deposited by a tubular cored electrode-flux deposited by a tubular cored electrode-flux
combination (see Table 4); combination (see Table 4);
6) the sixth part gives a symbol indicating the stress 6) the sixth part gives a symbol indicating the
relief treatment if this is applied; diffusible hydrogen content of the weld metal
obtained in accordance with ISO 3690.
7) the seventh part gives a symbol indicating the
diffusible hydrogen content of the weld metal
obtained in accordance with ISO 3690.
4 Symbols and requirements
A solid wire electrode can be classified separately based upon its chemical composition, as specified in
Table 3. The all-weld metal deposit composition and mechanical properties obtained with a particular solid
wire electrode or tubular cored electrode vary somewhat depending upon the flux used. Accordingly, the
classification of the all-weld metal deposit obtained with a particular solid wire electrode or tubular cored
electrode may be different for different fluxes. However, deposit composition is only a classification
requirement for tubular cored electrode-flux combinations.
4.1 Symbol for the product or process
The symbol for the electrode-flux combination or weld deposit produced by a solid wire electrode or by a
tubular cored electrode using the submerged arc welding process with a particular flux, shall be the letter “S”
placed at the beginning of the designation.
4.1A Classification by yield strength and 4.1B Classification by tensile strength and
47 J impact energy 27 J impact energy
The symbol for the solid wire electrode for use in the The symbol for the solid wire electrode for use in the
submerged arc welding process shall be the letter submerged arc welding process shall be the letters
“S” placed at the beginning of the solid wire “SU” placed at the beginning of the solid wire
electrode designation. electrode designation.
The symbol for the tubular cored electrode for use in The symbol for the tubular cored electrode for use in
the submerged arc welding process shall be the the submerged arc welding process shall be the
letter “T” placed at the beginning of the tubular cored letters “TU” placed at the beginning of the tubular
electrode designation. cored electrode designation.
4.2 Symbols for the tensile properties of the all-weld metal deposit
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, yield strength, and elongation of the
in the as-welded condition or after stress relief all-weld metal in the as-welded condition or in the
treatment in accordance with 4.6A, determined in post-weld heat-treated condition in accordance with
accordance with Clause 5 (A-side). 4.6B, determined in accordance with Clause 5 (B-
side), with a particular flux.
© ISO 2011 – All rights reserved 3
---------------------- Page: 15 ----------------------
SIST EN ISO 26304:2011
ISO 26304:2011(E)
Table 1A — Symbol for the tensile properties Table 1B — Symbol for the tensile properties
(Classification by yield strength and 47 J impact (Classification by tensile strength and 27 J impact
energy) energy)
Minimum
a b
Minimum Tensile Minimum Tensile Minimum
yield
c
a
yield strength strength elongation strength elongation
Symbol Symbol
b
strength
MPa MPa % MPa MPa %
55 550 640 to 820 18 59X 490 590 to 790 16
62 620 700 to 890 18 62X 500 620 to 820 15
69 690 770 to 940 17 69X 550 690 to 890 14
79 790 880 to 1 080 16 76X 670 760 to 960 13
89 890 940 to 1 180 15 78X 670 780 to 980 13
a
83X 740 830 to 1 030 12
For yield strength, the lower yield strength, R , is used
eL
when yielding occurs, otherwise the 0,2 % proof strength, R , is
p0,2
a
X is “A” or “P”, where “A” indicates testing in the as-welded
used.
condition and “P” indicates testing in the post-weld heat-treated
b
Gauge length is equal to five times the test specimen condition
diameter.
b
For yield strength, the 0,2 % proof strength, R , is used.
p0,2
c
Gauge length is equal to five times the test specimen
diameter.
4.3 Symbol for the impact properties of the all-weld metal
The symbols in Table 2 indicate the temperature at which an average impact energy of 47 J or 27 J is
achieved under the conditions given in Clause 5 in the as-welded condition or after post-weld heat treatment.
Table 2 — Symbol for the impact properties of the all-weld metal
Temperature for minimum
ab b
or 27 J
average impact energy of 47 J
Symbol
°C
Z No requirements
a b
A or Y +20
0 0
2 −20
3 −30
4 −40
5 −50
6 −60
a
When classified in accordance with 4.3A.
b
When classified in accordance with 4.3B.
4 © ISO 2011 – All rights reserved
---------------------- Page: 16 ----------------------
SIST EN ISO 26304:2011
ISO 26304:2011(E)
4.3A Classification by yield strength and 4.3B Classification by tensile strength and
47 J impact energy 27 J impact energy
Three test specimens shall be tested. The average Five test specimens shall be tested. The lowest and
value shall be at least 47 J. Only one individual value highest values obtained shall be disregarded. Two of
may be lower than 47 J but not lower than 32 J. the three remaining values shall be greater than the
specified 27 J level, one of the three may be lower
but shall not be less than 20 J. The average of the
three remaining values shall be at least 27 J.
The addition of the optional symbol U, immediately
after the symbol for condition of heat treatment,
indicates that the supplemental requirement 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 specimens tested
and values obtained shall meet the requirements of
4.3A.
4.4 Symbol for the type of welding flux
The symbols for welding flux shall be in accordance with ISO 14174.
4.5 Symbol for the chemical composition of solid wire electrodes and of the all-weld metal
from tubular cored electrode-flux combinations
The symbols in Table 3 indicate the chemical composition of the solid wire electrode, determined under the
conditions given in Clause 6.
The symbols in Table 4 indicate the chemical composition of the all-weld metal deposit obtained with the
tubular cored electrode and a particular flux, determined under the conditions given in Clause 6.
© ISO 2011 – All rights reserved 5
---------------------- Page: 17 ----------------------
SIST EN ISO 26304:2011
ISO 26304:2011(E)
6 © ISO 2011 – All rights reserved
Table 3 — Chemical composition requirements for solid wire electrodes
Chemical composition
Symbol for chemical composition
a
% (by mass)
classification by classification by
yield strength and tensile strength and
b
C Si Mn P S Cr Ni Mo Cu V Other
47 J impact energy 27 J impact energy
ISO 26304-A ISO 26304-B
cd
SUN1M3 0,10 to 0,18 0,20 1,70 to 2,40 0,025 0,025 — 0,40 to 0,80 0,40 to 0,65 0,35 — —
cd
SUN2M1 0,12 0,05 to 0,30 1.20 to 1,60 0,020 0,020 0,20 0,75 to 1,25 0,10 to 0,30 0,35 — —
cd
SUN2M3 0,15 0,25 0,80 to 1,40 0,020 0,020 0,20 0,80 to 1,20 0,40 to 0,65 0,40 — —
cd
SUN2M31 0,15 0,25 1,30 to 1,90 0,020 0,020 0,20 0,80 to 1,20 0,40 to 0,65 0,40 — —
cd
SUN2M32 0,15 0,25 1,60 to 2,30 0,020 0,020 0,20 0,80 to 1,20 0,40 to 0,65 0.40 — —
cd
SUN2M33 0,10 to 0,18 0,30 1,70 to 2,40 0,025 0,025 — 0,70 to 1,10 0,40 to 0,65 0,35 — —
de
S2Ni1Mo (SUN2M2) 0,07 to 0,15 0,05 to 0,25 0,80 to 1,30 0,020 0,020 0,20 0,80 to 1,20 0,45 to 0,65 0,30 — 0,50
de
S3Ni1Mo (SUN2M2) 0,07 to 0,15 0,05 to 0,35 1,30 to 1,80 0,020 0,020 0,20 0,80 to 1,20 0,45
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.