ISO 18276:2024
(Main)Welding consumables — Tubular cored electrodes for gas-shielded and non-gas-shielded metal arc welding of high strength steels — Classification
Welding consumables — Tubular cored electrodes for gas-shielded and non-gas-shielded metal arc welding of high strength steels — Classification
This document specifies the requirements for classification of tubular cored electrodes with or without a gas shield for metal arc welding of high-strength steels in the as-welded condition or in the post-weld heat-treated condition with a minimum yield strength higher than 550 MPa or a minimum tensile strength higher than 590 MPa. One tubular cored electrode can be tested and classified with different shielding gases, if used with more than one. This document is a combined specification providing classification utilizing a system based upon the yield strength and an average impact energy of 47 J of the all-weld metal, or utilizing a system based upon the tensile strength and an average impact energy of 27 J of the all-weld metal. — Subclauses and tables which carry the suffix “system A” are applicable only to tubular cored electrodes classified under the system based upon the yield strength and an average impact energy of 47 J of the all-weld metal given in this document. — Subclauses and tables which carry the suffix “system B” are applicable only to tubular cored electrodes classified under the system based upon the tensile strength and an average impact energy of 27 J of the all-weld metal given in this document. — Subclauses and tables which do not have either the suffix “system A” or the suffix “system B” are applicable to all tubular cored electrodes classified under this document. It is recognized that the operating characteristics of tubular cored electrodes can be modified by the use of pulsed current but, for the purposes of this document, pulsed current is not used for determining the electrode classification.
Produits consommables pour le soudage — Fils-électrodes fourrés pour le soudage à l'arc avec ou sans gaz de protection des aciers à haute résistance — Classification
Le présent document spécifie les exigences relatives à la classification des fils-électrodes fourrés pour soudage à l'arc avec ou sans gaz de protection pour l’état brut de soudage ou pour l’état traité thermiquement après soudage des aciers à haute résistance ayant une limite d'élasticité minimale supérieure à 550 MPa ou une résistance à la traction minimale supérieure à 590 MPa. Un fil-électrode peut, le cas échéant, être essayé et classifié avec différents gaz de protection. 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 du métal fondu hors dilution, soit sur la résistance à la traction et l'énergie de rupture moyenne de 27 J du métal fondu hors dilution. — Les paragraphes et les tableaux qui portent le suffixe «système A» ne sont applicables qu'aux fils-électrodes fourrés classifiés d'après le système basé sur la limite d'élasticité et l'énergie de rupture moyenne de 47 J du métal fondu hors dilution conformément au présent document. — Les paragraphes et les tableaux qui portent le suffixe « système B» ne sont applicables qu'aux fils-électrodes fourrés classifiés d'après le système basé sur la résistance à la traction et l'énergie de rupture moyenne de 27 J du métal fondu hors dilution conformément au présent document. — Les paragraphes et les tableaux qui ne portent ni le suffixe «système A», ni le suffixe «système B», sont applicables à tous les fils-électrodes fourrés classifiés conformément au présent document. Il est reconnu que les caractéristiques d’emploi des fils-électrodes fourrés peuvent être modifiées par l’utilisation de courant pulsé mais, pour les besoins du présent document, le courant pulsé n'est pas utilisé pour la détermination de la classification d'un fil-électrode.
General Information
Relations
Buy Standard
Standards Content (Sample)
International
Standard
ISO 18276
Third edition
Welding consumables — Tubular
2024-07
cored electrodes for gas-shielded
and non-gas-shielded metal arc
welding of high strength steels —
Classification
Produits consommables pour le soudage — Fils-électrodes
fourrés pour le soudage à l'arc avec ou sans gaz de protection des
aciers à haute résistance — Classification
Reference number
© ISO 2024
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
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Classification . 2
4.1 General .2
4.2 Classification systems .2
4.3 Compulsory and optional sections in classifications .3
5 Symbols and requirements . 4
5.1 Symbol for the product or process .4
5.2 Symbol for tensile properties of all-weld metal .4
5.3 Symbol for impact properties of all-weld metal .5
5.4 Symbol for chemical composition of all-weld metal.6
5.5 Symbol for type of electrode core – Classification by yield strength and 47 J impact
energy – System A . .10
5.6 Symbol for usability characteristics of the electrodes – Classification by tensile
strength and 27 J impact energy – System B .10
5.7 Symbol for shielding gas .11
5.8 Symbol for welding position .11
5.9 Symbol for hydrogen content of deposited metal.11
5.10 Symbol for conditions of post-weld heat treatment . 12
5.10.1 Classification by yield strength and 47 J impact energy – System A . 12
5.10.2 Classification by tensile strength and 27 J impact energy – System B . 12
6 Rounding procedure .12
7 Mechanical tests .12
7.1 General . 12
7.2 Preheating and interpass temperatures . 12
7.3 Pass sequence . 13
7.4 Post-weld heat treatment (PWHT) condition .14
7.4.1 Classification by yield strength and 47 J impact energy – System A .14
7.4.2 Classification by tensile strength and 27 J impact energy – System B .14
8 Chemical analysis . . 14
9 Retesting . 14
10 Technical delivery conditions .15
11 Examples of designations .15
11.1 General . 15
11.2 Example 1 - Classification by yield strength and 47 J impact energy – System A . 15
11.3 Example 2 - Classification by tensile strength and 27 J impact energy – System B . 15
11.4 Example 3 – Classification by yield strength and 47 J impact energy - System A .16
11.5 Example 4 – Classification by tensile strength and 27 J impact energy – System B .17
Annex A (informative) Classification systems . 19
Annex B (informative) Description of composition designations for electrodes in the
classification system based upon tensile strength and average impact energy of 27 J –
System B .22
Annex C (informative) Description of types of electrode core in the classification system based
upon yield strength and average impact energy of 47 J – System A .23
iii
Annex D (informative) Descriptions of types of usability characteristics in the classification
system based upon tensile strength and average impact energy of 27 J – System B .24
Annex E (informative) Notes on hydrogen content .26
Bibliography .27
iv
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
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).
This third edition cancels and replaces the second edition (ISO 18276:2017), which has been technically
revised.
The main changes are as follows:
— document has been reformatted in single column format. Some clauses and subclauses have been merged
or separated and some tables have been merged;
— dated normative references have been updated to the latest editions;
— Tables 3A and 3B have been revised and merged and is now Table 6;
— sub-clause 5.7 has been revised and is now 5.8;
— Clause 11 contains new designation examples.
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.
v
Introduction
This document proposes a classification system for tubular cored electrodes in terms of the tensile
properties, impact properties, chemical composition of the all-weld metal, type of electrode core, shielding
gas and welding position. The ratio of yield strength to tensile strength of the weld metal is generally higher
than that of the parent metal. Note that matching weld metal yield strength to parent metal yield strength
will not necessarily ensure that the weld metal tensile strength matches that of the parent metal. Where the
application requires matching tensile strength, therefore, selection of the consumable should be made by
reference to columns 3 and 7 of Table 3.
Note that the mechanical properties of all-weld metal test specimens used to classify tubular cored
electrodes differ from those obtained with production joints because of differences in welding procedure,
such as electrode size, width of weave, welding position and parent metal composition.
The classification in accordance with sy
...
Norme
internationale
ISO 18276
Troisième édition
Produits consommables pour le
2024-07
soudage — Fils-électrodes fourrés
pour le soudage à l'arc avec ou sans
gaz de protection des aciers à haute
résistance — Classification
Welding consumables — Tubular cored electrodes for gas-
shielded and non-gas-shielded metal arc welding of high strength
steels — Classification
Numéro de référence
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2024
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publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
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Publié en Suisse
ii
Sommaire Page
Avant-propos .v
Introduction .vi
1 Domaine d'application . 1
2 Références normatives . 1
3 Termes et définitions . 2
4 Classification . 2
4.1 Généralités .2
4.2 Systèmes de classification .2
4.3 Sections obligatoire et facultative dans les classifications .3
5 Symboles et exigences . 4
5.1 Symbole pour le produit ou le procédé .4
5.2 Symbole pour les caractéristiques de traction du métal fondu hors dilution .4
5.3 Symbole pour les caractéristiques de résistance à la flexion par choc du métal fondu
hors dilution .5
5.4 Symbole pour la composition chimique du métal fondu hors dilution .6
5.5 Symbole pour le type de fourrage du fil-électrode - Classification d'après la limite
d'élasticité et l'énergie de rupture de 47 J – Système A .9
5.6 Symbole pour les caractéristiques d’usabilité du fil-électrode – Classification d'après la
résistance à la traction et l'énergie de rupture de 27 J – Système B .9
5.7 Symbole pour le gaz de protection .10
5.8 Symbole pour la position de soudage .10
5.9 Symbole pour la teneur en hydrogène du métal déposé .11
5.10 Symbole pour les conditions de traitement thermique après soudage .11
5.10.1 Classification d'après la limite d'élasticité et l'énergie de rupture de 47 J –
Système A .11
5.10.2 Classification d'après la résistance à la traction et l'énergie de rupture de 27 J –
Système B .11
6 Procédure d’arrondissage .12
7 Essais mécaniques . .12
7.1 Généralités . 12
7.2 Températures de préchauffage et entre passes . 12
7.3 Séquence des passes . 13
7.4 Condition de traitement thermique après soudage .14
7.4.1 Classification d'après la limite d'élasticité et l'énergie de rupture de 47 J –
Système A .14
7.4.2 Classification d'après la résistance à la traction et l'énergie de rupture de 27 J –
Système B .14
8 Analyse chimique . 14
9 Contre-essais .15
10 Conditions techniques de livraison .15
11 Exemples de désignations .15
11.1 Généralités . 15
11.2 Exemple 1 - Classification d'après la limite d'élasticité et l'énergie de rupture de 47 J –
Système A . 15
11.3 Exemple 2 - Classification d'après la résistance à la traction et l'énergie de rupture de
27 J – Système B .16
11.4 Exemple 3 – Classification d'après la limite d'élasticité et l'énergie de rupture de 47 J –
Système A .16
11.5 Exemple 4 – Classification d'après la résistance à la traction et l'énergie de rupture de
27 J – Système B .17
iii
Annexe A (informative) Systèmes de classification . 19
Annexe B (informative) Description des désignations de composition des fils-électrodes selon
le système de classification basé sur la résistance à la traction et l’énergie de rupture
minimale de 27 J - Système B .21
Annexe C (informative) Description des types de fourrage dans le système de classification
basé sur la limite d’élasticité et l’énergie de rupture moyenne de 47 J - Système A .22
Annexe D (informative) Descriptions des types de caractéristiques d’usabilité dans le système
de classification basé sur la résistance à la traction et l’énergie de rupture moyenne de
27 J - Système B .23
Annexe E (informative) Notes sur la teneur en hydrogène.25
Bibliographie .26
iv
Avant-propos
L'ISO (Organisation internationale de normalisation) est une fédération mondiale d'organismes nationaux
de normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est en général
confiée aux comités techniques de l'ISO. Chaque comité membre intéressé par une étude a le droit de faire
partie du comité technique créé à cet effet. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec l'ISO participent également aux travaux. L'ISO collabore étroitement avec
la Commission électrotechnique internationale (IEC) en ce qui concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier de prendre note des différents
critères d'approbation requis pour les différents types de documents ISO. Le présent document
a été rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2
(voir www.iso.org/directives).
L'attention est appelée sur le fait que certains des éléments du présent document peuvent faire l'objet de
droits de propriété intellectuelle ou de droits analogues. L'ISO ne saurait être tenue pour responsable
de ne pas avoir identifié de tels droits de propriété et averti de leur existence. Les détails concernant les
références aux droits de propriété intellectuelle ou autres droits analogues identifiés lors de l'élaboration du
document sont indiqués dans l'Introduction et/ou dans la liste des déclarations de brevets reçues par l'ISO
(voir www.iso.org/brevets).
Les appellations commerciales éventuellement mentionnées dans le présent document sont données pour
information, par souci de commodité, à l’intention des utilisateurs et ne sauraient constituer un engagement.
Pour une explication de la nature volontaire des normes, la signification des termes et expressions
spécifiques de l'ISO liés à l'évaluation de la conformité, ou pour toute information au sujet de l'adhésion de
l'ISO aux principes de l’Organisation mondiale du commerce (OMC) concernant les obstacles techniques au
commerce (OTC), voir le lien suivant: www.iso.org/iso/fr/avant-propos.html.
Le présent document a été élaboré par le comité technique ISO/TC 44, Soudage et techniques connexes, sous-
comité SC 3, Produits consommables pour le soudage, en collaboration avec le comité technique CEN/TC 121,
Soudage et techniques connexes, du Comité européen de normalisation (CEN) conformément à l’Accord de
coopération technique entre l’ISO et le CEN (Accord de Vienne).
Cette troisième édition annule et remplace la seconde édition (ISO 18276:2017), qui a fait l’objet d’une
révision technique.
Les principales modifications sont les suivantes :
— le document a été reformaté dans un format en une seule colonne. Certains articles et paragraphes ont
été fusionnés ou séparés et certains tableaux ont été fusionnés ;
— les références normative datées ont été mises à jour selon les
...
FINAL DRAFT
International
Standard
ISO/FDIS 18276
ISO/TC 44/SC 3
Welding consumables — Tubular
Secretariat: ANSI
cored electrodes for gas-shielded
Voting begins on:
and non-gas-shielded metal arc
2024-04-09
welding of high strength steels —
Voting terminates on:
Classification
2024-06-04
Produits consommables pour le soudage — Fils-électrodes
fourrés pour le soudage à l'arc avec ou sans gaz de protection des
aciers à haute résistance — Classification
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 SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO
ISO/CEN PARALLEL PROCESSING LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
ISO/FDIS 18276:2024(en) © ISO 2024
FINAL DRAFT
ISO/FDIS 18276:2024(en)
International
Standard
ISO/FDIS 18276
ISO/TC 44/SC 3
Welding consumables — Tubular
Secretariat: ANSI
cored electrodes for gas-shielded
Voting begins on:
and non-gas-shielded metal arc
welding of high strength steels —
Voting terminates on:
Classification
Produits consommables pour le soudage — Fils-électrodes
fourrés pour le soudage à l'arc avec ou sans gaz de protection des
aciers à haute résistance — Classification
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 SUPPOR TING DOCUMENTATION.
© ISO 2024
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO
ISO/CEN PARALLEL PROCESSING
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
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 Reference number
ISO/FDIS 18276:2024(en) © ISO 2024
ii
ISO/FDIS 18276:2024(en)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Classification . 2
4.1 General .2
4.2 Classification systems .2
4.3 Compulsory and optional sections in classifications .3
5 Symbols and requirements . 4
5.1 Symbol for the product or process .4
5.2 Symbol for tensile properties of all-weld metal .4
5.3 Symbol for impact properties of all-weld metal .5
5.4 Symbol for chemical composition of all-weld metal.6
5.5 Symbol for type of electrode core – Classification by yield strength and 47 J impact
energy – System A . .10
5.6 Symbol for usability characteristics of the electrodes – Classification by tensile
strength and 27 J impact energy – System B .10
5.7 Symbol for shielding gas .11
5.8 Symbol for welding position .11
5.9 Symbol for hydrogen content of deposited metal.11
5.10 Symbol for conditions of post-weld heat treatment . 12
5.10.1 Classification by yield strength and 47 J impact energy – System A . 12
5.10.2 Classification by tensile strength and 27 J impact energy – System B . 12
6 Rounding procedure .12
7 Mechanical tests .12
7.1 General . 12
7.2 Preheating and interpass temperatures . 12
7.3 Pass sequence . 13
7.4 Post-weld heat treatment (PWHT) condition .14
7.4.1 Classification by yield strength and 47 J impact energy – System A .14
7.4.2 Classification by tensile strength and 27 J impact energy – System B .14
8 Chemical analysis . . 14
9 Retesting . 14
10 Technical delivery conditions .15
11 Examples of designations .15
11.1 General . 15
11.2 Example 1 - Classification by yield strength and 47 J impact energy – System A . 15
11.3 Example 2 - Classification by tensile strength and 27 J impact energy – System B . 15
11.4 Example 3 – Classification by yield strength and 47 J impact energy - System A .16
11.5 Example 4 – Classification by tensile strength and 27 J impact energy – System B .17
Annex A (informative) Classification systems . 19
Annex B (informative) Description of composition designations for electrodes in the
classification system based upon tensile strength and average impact energy of 27 J –
System B .22
Annex C (informative) Description of types of electrode core in the classification system based
upon yield strength and average impact energy of 47 J – System A .23
iii
ISO/FDIS 18276:2024(en)
Annex D (informative) Descriptions of types of usability characteristics in the classification
system based upon tensile strength and average impact energy of 27 J – System B .24
Annex E (informative) Notes on hydrogen content .26
Bibliography .27
iv
ISO/FDIS 18276:2024(en)
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
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).
This third edition cancels and replaces the second edition (ISO 18276:2017), which has been technically
revised.
The main changes are as follows:
— document has been reformatted in single column format. Some clauses and subclauses have been merged
or separated and some tables have been merged;
— dated normative references have been updated to the latest editions;
— Tables 3A and 3B have been
...
ISO/TC 44/SC 3
Date: 2024-02-15
ISO/FDIS 18276:2024(E)
ISO/TC 44/SC 3
Secretariat: AFNOR ANSI
Date: 2024-03-26
Welding consumables — Tubular cored electrodes for gas-shielded
and non-gas-shielded metal arc welding of high- strength steels —
Classification
Produits consommables pour le soudage — Fils-électrodes fourrés pour le soudage à l'arc avec ou sans gaz de
protection des aciers à haute résistance — Classification
FDIS stage
2024-02-15
Single column format
ISO/FDIS 18276:2024(Een)
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
EmailE-mail: copyright@iso.org
Website: www.iso.orgwww.iso.org
Published in Switzerland
ii © ISO 2024 – All rights reserved
ii
ISO/FDIS 18276:2024(Een)
Contents
Foreword . vii
Introduction. ix
1 Scope .1
2 Normative references .1
3 Terms and definitions .2
4 Classification .2
4.1 General .2
4.2 Classification systems .2
4.3 Compulsory and optional sections in classifications .3
5 Symbols and requirements .4
5.1 Symbol for the product or process.4
5.2 Symbol for tensile properties of all-weld metal .4
5.3 Symbol for impact properties of all-weld metal .5
5.4 Symbol for chemical composition of all-weld metal .6
5.5 Symbol for type of electrode core – Classification by yield strength and 47 J impact energy – System A
5.6 Symbol for usability characteristics of the electrodes – Classification by tensile strength and 27 J impact
energy – System B . 10
5.7 Symbol for shielding gas . 11
5.8 Symbol for welding position . 11
5.9 Symbol for hydrogen content of deposited metal . 12
5.10 Symbol for conditions of post-weld heat treatment . 12
5.10.1 Classification by yield strength and 47 J impact energy – System A . 12
5.10.2 Classification by tensile strength and 27 J impact energy – System B . 12
6 Rounding procedure . 12
7 Mechanical tests . 12
7.1 General . 12
7.2 Preheating and interpass temperatures . 13
7.3 Pass sequence . 14
7.4 Post-weld heat treatment (PWHT) condition . 15
7.4.1 Classification by yield strength and 47 J impact energy – System A . 15
7.4.2 Classification by tensile strength and 27 J impact energy – System B . 15
8 Chemical analysis . 15
9 Retesting. 16
10 Technical delivery conditions . 16
11 Examples of designations . 16
iii
ISO/FDIS 18276:2024(Een)
11.1 General . 16
11.2 Example 1 - Classification by yield strength and 47 J impact energy – System A . 16
11.3 Example 2 - Classification by tensile strength and 27 J impact energy – System B . 17
11.4 Example 3 – Classification by yield strength and 47 J impact energy - System A . 18
11.5 Example 4 – Classification by tensile strength and 27 J impact energy – System B . 19
Annex A (informative) Classification systems. 22
A.1 ISO 18276-A . 22
A.2 ISO 18276-B . 22
Annex B (informative) Description of composition designations for electrodes in the classification system
based upon tensile strength and average impact energy of 27 J – System B . 27
B.1 XMX type . 27
B.2 NXMX type . 27
B.3 NXCXMX type . 27
Annex C (informative) Description of types of electrode core in the classification system based upon yield
strength and average impact energy of 47 J – System A . 28
C.1 R type . 28
C.2 P type . 28
C.3 B type . 28
C.4 M type . 28
C.5 Z type . 28
Annex D (informative) Descriptions of types of usability characteristics in the classification system based
upon tensile strength and average impact energy of 27 J – System B . 29
D.1 Electrodes having a usability designator of “T1” . 29
D.2 Electrodes having a usability designator of “T5” . 29
D.3 Electrodes having a usability designator of “T7” . 29
D.4 Electrodes having a usability designator of “T8” . 29
D.5 Electrodes having a usability designator of “T11” . 29
D.6 Electrodes having a usability designator of “T15” . 30
D.7 Electrodes having a usability designator of “TG” . 30
Annex E (informative) Notes on hydrogen content . 31
E.1 Hydrogen-induced cracks . 31
E.2 Hydrogen sources in tubular cored electrodes . 31
E.3 Effect of operating condition on hydrogen level . 31
Bibliography . 32
Foreword . 5
Introduction . 7
iv © ISO 2024 – All rights reserved
iv
ISO/FDIS 18276:2024(Een)
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Classification . 2
4.1 General .
...
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