SIST EN ISO 636:2016

Welding consumables - Rods, wires and deposits for tungsten inert gas welding of non-alloy and fine-grain steels - Classification (ISO 636:2015)

This International Standard specifies requirements for classification of rods and wires in the aswelded
condition and in the post-weld heat-treated condition for tungsten inert gas welding of nonalloy
and fine-grain steels with a minimum yield strength of up to 500 MPa or a minimum tensile
strength of up to 570 MPa.
This International Standard is a combined specification providing classification utilizing a system
based upon the yield strength and the average impact energy of 47 J of all-weld metal or utilizing a
system based upon the tensile strength and the average impact energy of 27 J of all-weld metal.
a) Paragraphs and tables which carry the suffix letter “A” are applicable only to rods and wires
classified to the system based upon the yield strength and the average impact energy of 47 J of allweld
metal in accordance with this International Standard.
b) Paragraphs and tables which carry the suffix letter “B” are applicable only to rods and wires
classified to the system based upon the tensile strength and the average impact energy of 27 J of
all-weld metal in accordance with this International Standard.
c) Paragraphs and tables which have neither the suffix letter “A” nor the suffix letter “B” are applicable
to all rods and wires classified in accordance with this International Standard.

Schweißzusätze - Stäbe, Drähte und Schweißgut zum Wolfram-Inertgasschweißen von unlegierten Stählen und Feinkornstählen - Einteilung (ISO 636:2015)

Diese Internationale Norm legt Anforderungen zur Einteilung von Stäben und Drähten zum Wolfram-Inertgas-Schweißen von unlegierten Stählen und Feinkornstählen mit einer Mindeststreckgrenze bis 500 MPa oder einer Mindestzugfestigkeit bis 570 MPa im Schweißzustand und nach einer Wärmenachbehandlung fest.
Diese Internationale 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.
1)   Abschnitte und Tabellen, gekennzeichnet durch ein nachgestelltes 'A', können nur für Stäbe und Drähte angewendet werden, die nach der Streckgrenze und der durchschnittlichen Kerbschlagarbeit von 47 J des reinen Schweißgutes nach dieser Internationalen Norm eingeteilt werden.
2)   Abschnitte und Tabellen, gekennzeichnet durch ein nachgestelltes 'B', können nur für Stäbe und Drähte angewendet werden, die nach der Zugfestigkeit und der durchschnittlichen Kerbschlagarbeit von 27 J des reinen Schweißgutes nach dieser Internationalen Norm eingeteilt werden.
3)   Abschnitte und Tabellen, die kein nachgestelltes 'A' oder 'B' enthalten, sind für alle nach dieser Internationalen Norm eingeteilten Stäbe und Drähte anwendbar.

Produits consommables pour le soudage - Baguettes et fils pour dépôts par soudage TIG des aciers non alliés et des aciers à grains fins - Classification (ISO 636:2015)

ISO 636:2015 spécifie les exigences relatives à la classification des baguettes et des fils à l'état brut de soudage et à l'état traité thermiquement après soudage, en soudage TIG (soudage à l'arc sous protection de gaz inerte avec électrode de tungstène) 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.
La présente Norme internationale propose une spécification mixte permettant une classification utilisant un système fondé soit sur la limite d'élasticité et l'énergie de rupture moyenne de 47 J pour le métal fondu hors dilution, soit sur la résistance à la traction et l'énergie de rupture moyenne de 27 J pour le métal fondu hors dilution.
Les paragraphes et les tableaux qui portent le suffixe «A» ne sont applicables qu'aux baguettes et fils 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 conformément à la présente Norme internationale.
Les paragraphes et les tableaux qui portent le suffixe «B» ne sont applicables qu'aux baguettes et fils 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 conformément à la présente Norme internationale.
Les paragraphes et les tableaux ne comportant ni le suffixe «A» ni le suffixe «B» sont applicables à toutes les baguettes et à tous les fils classifiés conformément à la présente Norme internationale.

Dodajni materiali za varjenje - Palice, žice in čisti vari pri varjenju nelegiranih in drobnozrnatih jekel po postopku TIG - Razvrstitev (ISO 636:2015)

Ta mednarodni standard določa zahteve za razvrstitev palic in žic v varjenem stanju in stanju po varjenju s toplotno obdelavo za varjenje nelegiranih in drobnozrnatih jekel po postopku TIG z minimalno mejo prožnosti največ 500 MPa ali minimalno natezno trdnostjo največ 570 MPa.
Ta mednarodni standard je kombinirana specifikacija, ki določa razvrstitev po sistemu na osnovi meje prožnosti in povprečne energije udarca 47 J za čiste vare ali po sistemu na osnovi natezne trdnosti in povprečne energije udarca 27 J za čiste vare.
a) Odstavki in preglednice z dodano črko »A« se uporabljajo samo za palice in žice, ki so razvrščene po sistemu, ki temelji na meji prožnosti in povprečni energiji udarca 47 J za čiste vare v skladu s tem mednarodnim standardom.
b) Odstavki in preglednice z dodano črko »B« se uporabljajo samo za palice in žice, ki so razvrščene po sistemu, ki temelji na natezni trdnosti in povprečni energiji udarca 27 J za čiste vare v skladu s tem mednarodnim standardom.
c) Odstavki in preglednice brez dodane črke »A« ali »B« se uporabljajo
za vse palice in žice, ki so razvrščene v skladu s tem mednarodnim standardom.

General Information

• Status: Withdrawn
• Public Enquiry End Date: 31-Dec-2012
• Publication Date: 26-Jan-2016
• Withdrawal Date: 03-Jan-2018
• ICS: 25.160.20 - Welding consumables
• Technical Committee: VAR - Welding
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 03-Jan-2018
• Due Date: 26-Jan-2018
• Completion Date: 04-Jan-2018
• Ref Project: EN ISO 636:2015 - Welding consumables - Rods, wires and deposits for tungsten inert gas welding of non-alloy and fine-grain steels - Classification (ISO 636:2015)

Relations

• Replaced By: SIST EN ISO 636:2018 - Welding consumables - Rods, wires and deposits for tungsten inert gas welding of non-alloy and fine-grain steels - Classification (ISO 636:2017)
• Effective Date: 01-Feb-2018
• Replaces: SIST EN ISO 636:2008 - Welding consumables - Rods, wires and deposits for tungsten inert gas welding of non-alloy and fine-grain steels - Classification (ISO 636:2004)
• Effective Date: 01-Mar-2016

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 636:2016
01-marec-2016
1DGRPHãþD
SIST EN ISO 636:2008
'RGDMQLPDWHULDOL]DYDUMHQMH3DOLFHåLFHLQþLVWLYDULSULYDUMHQMXQHOHJLUDQLKLQ
GUREQR]UQDWLKMHNHOSRSRVWRSNX7,*5D]YUVWLWHY,62
Welding consumables - Rods, wires and deposits for tungsten inert gas welding of non-
alloy and fine-grain steels - Classification (ISO 636:2015)
Schweißzusätze - Stäbe, Drähte und Schweißgut zum Wolfram-Inertgasschweißen von
unlegierten Stählen und Feinkornstählen - Einteilung (ISO 636:2015)
Produits consommables pour le soudage - Baguettes et fils pour dépôts par soudage
TIG des aciers non alliés et des aciers à grains fins - Classification (ISO 636:2015)
Ta slovenski standard je istoveten z: EN ISO 636:2015
ICS:
25.160.20 Potrošni material pri varjenju Welding consumables
SIST EN ISO 636:2016 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 636:2016

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SIST EN ISO 636:2016


EN ISO 636
EUROPEAN STANDARD

NORME EUROPÉENNE

December 2015
EUROPÄISCHE NORM
ICS 25.160.20 Supersedes EN ISO 636:2008
English Version

Welding consumables - Rods, wires and deposits for
tungsten inert gas welding of non-alloy and fine-grain
steels - Classification (ISO 636:2015)
Produits consommables pour le soudage - Baguettes et Schweißzusätze - Stäbe, Drähte und Schweißgut zum
fils pour dépôts par soudage TIG des aciers non alliés Wolfram-Inertgasschweißen von unlegierten Stählen
et des aciers à grains fins - Classification (ISO und Feinkornstählen - Einteilung (ISO 636:2015)
636:2015)
This European Standard was approved by CEN on 15 August 2015.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 636:2015 E
worldwide for CEN national Members.

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SIST EN ISO 636:2016
EN ISO 636:2015 (E)
Contents Page
European foreword . 3
2

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SIST EN ISO 636:2016
EN ISO 636:2015 (E)
European foreword
This document (EN ISO 636:2015) 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 June 2016, and conflicting national standards shall be
withdrawn at the latest by June 2016.
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 636:2008.
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, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 636:2015 has been approved by CEN as EN ISO 636:2015 without any modification.

3

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SIST EN ISO 636:2016

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SIST EN ISO 636:2016
INTERNATIONAL ISO
STANDARD 636
Fourth edition
2015-11-15
Welding consumables — Rods, wires
and deposits for tungsten inert gas
welding of non-alloy and fine-grain
steels — Classification
Produits consommables pour le soudage — Baguettes et fils pour
dépôts par soudage TIG des aciers non alliés et des aciers à grains fins
— Classification
Reference number
ISO 636:2015(E)
©
ISO 2015

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SIST EN ISO 636:2016
ISO 636:2015(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2015, Published in Switzerland
All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2015 – All rights reserved

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SIST EN ISO 636:2016
ISO 636:2015(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Classification . 1
4 Symbols and requirements . 2
4.1 Symbol for the product/process . 2
4.2 Symbol for strength and elongation of all-weld metal . 3
4.3 Symbol for impact properties of all-weld metal . 4
4.4 Symbol for the chemical composition of rods or wires . 4
5 Mechanical tests . 9
5.1 Preheating and interpass temperatures . 9
5.2 Welding conditions and pass sequence .10
5.3 PWHT condition .10
6 Chemical analysis .10
7 Rounding procedure .11
8 Retests .11
9 Technical delivery conditions .11
10 Designation .11
© ISO 2015 – All rights reserved iii

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SIST EN ISO 636:2016
ISO 636:2015(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 on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 44, Welding and allied processes, Subcommittee
SC 3, Welding consumables.
This fourth edition cancels and replaces the third edition (ISO 636:2004), which has been
technically revised.
Requests for official interpretations of any aspect of this International Standard should be directed to
the Secretariat of ISO/TC 44/SC 3, through your national standards body, a complete listing of which
can be found at www.iso.org.
iv © ISO 2015 – All rights reserved

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SIST EN ISO 636:2016
ISO 636:2015(E)

Introduction
This International Standard provides a classification for the designation of rods and wires in terms of
their chemical composition and, where required, in terms of the yield strength, tensile strength, and
elongation of the all-weld metal. The ratio of yield to tensile strength of weld metal is generally higher
than that of parent metal. 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 material. Where
the application requires matching tensile strengths, selection of consumables is made by reference to
column 3 of Table 1A or Table 1B.
Of note is that the mechanical properties of all-weld metal test specimens used to classify the rods and
wires vary from those obtained in production joints because of differences in welding procedure such
as diameter, width of weave, welding position, and material composition.
The classification according to system A is mainly based on EN 1668:1997. The classification according
to system B is mainly based upon standards used around the Pacific Rim.
© ISO 2015 – All rights reserved v

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SIST EN ISO 636:2016

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SIST EN ISO 636:2016
INTERNATIONAL STANDARD ISO 636:2015(E)
Welding consumables — Rods, wires and deposits for
tungsten inert gas welding of non-alloy and fine-grain
steels — Classification
1 Scope
This International Standard specifies requirements for classification of rods and wires in the as-
welded condition and in the post-weld heat-treated condition for tungsten inert gas welding of non-
alloy and fine-grain steels with a minimum yield strength of up to 500 MPa or a minimum tensile
strength of up to 570 MPa.
This International Standard is a combined specification providing classification utilizing a system
based upon the yield strength and the average impact energy of 47 J of all-weld metal or utilizing a
system based upon the tensile strength and the average impact energy of 27 J of all-weld metal.
a) Paragraphs and tables which carry the suffix letter “A” are applicable only to rods and wires
classified to the system based upon the yield strength and the average impact energy of 47 J of all-
weld metal in accordance with this International Standard.
b) Paragraphs and tables which carry the suffix letter “B” are applicable only to rods and wires
classified to the system based upon the tensile strength and the average impact energy of 27 J of
all-weld metal in accordance with this International Standard.
c) Paragraphs and tables which have neither the suffix letter “A” nor the suffix letter “B” are applicable
to all rods and wires classified in accordance with this International Standard.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. 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 13916, Welding — Guidance on the measurement of preheating temperature, interpass temperature
and preheat maintenance temperature
ISO 14175, Welding consumables — Gases and gas mixtures for fusion welding and allied processes
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 80000-1:2009, Quantities and units — Part 1: General. Corrected by ISO 80000-1:2009/Cor 1:2011
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 rods or wires. The two designation approaches
include additional designators for some other classification requirements, but not all as will be
clear from the following sections. In most cases, a given commercial product can be classified to the
© ISO 2015 – All rights reserved 1

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SIST EN ISO 636:2016
ISO 636:2015(E)

classification requirements in both systems. Then, either or both classification designations can be
used for the product.
Rods or wires shall be classified according to their chemical composition in accordance with
Table 3A or Table 3B.
3A  Classification by yield strength and 47 J  3B  Classification according to alloy type
impact energy
The classification is divided into four parts. The classification is divided into four 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 the all-weld     the strength and elongation of the all-weld
    metal (see Table 1A).    metal in either the as-welded or post-weld
    heat-treated condition (see Table 1B).
3)  The third part gives a symbol indicating the
    impact properties of all-weld metal (see 3)  The third part gives a symbol indicating
    Table 2).    the impact properties of all-weld metal in
    the same condition as specified for the
4)  The fourth part gives a symbol indicating
    tensile strength (see Table 2). The letter
    the chemical composition of the rods or
    “U” after this designator indicates that the
    wires used (see Table 3A).
    deposit meets an average optional
    requirement of 47 J at the designated
    Charpy test temperature.
4)  The fourth part gives a symbol indicating
    the chemical composition of the rods or
    wires used (see Table 3B).
4 Symbols and requirements
4.1 Symbol for the product/process
The symbol of weld deposit by the tungsten inert gas welding process shall be the letter “W” placed at
the beginning of the designation.
The symbol of rods or wires for the tungsten inert gas welding shall be the letter “W” placed at the
beginning of the rod or wire designation.
2 © ISO 2015 – All rights reserved

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SIST EN ISO 636:2016
ISO 636:2015(E)

4.2 Symbol for strength and elongation of all-weld metal
4.2A  Classification by yield strength and 4.2B  Classification by tensile strength and
47 J impact energy 27 J impact energy
The symbol in Table 1A indicates yield The symbol in Table 1B indicates yield
strength, tensile strength, and elongation of strength, tensile strength, and elongation of the
the all-weld metal in the as-welded condition all-weld metal in the as-welded condition or in
determined in accordance with Clause 5. the post-weld heat-treated condition
determined in accordance with Clause 5.
Table 1A — Symbol for strength and elonga- Table 1B — Symbol for strength and elongation
ti
...

SLOVENSKI STANDARD
oSIST prEN ISO 636:2013
01-december-2013
'RGDMQLPDWHULDOL]DYDUMHQMH3DOLFHåLFHLQþLVWLYDULSULYDUMHQMXQHOHJLUDQLKLQ
GUREQR]UQDWLKMHNHOSR7,*5D]YUVWLWHY,62',6
Welding consumables - Rods, wires and deposits for tungsten inert gas welding of non-
alloy and fine-grain steels - Classification (ISO/DIS 636:2013)
Schweißzusätze - Stäbe, Drähte und Schweißgut zum Wolfram-Inertgasschweißen von
unlegierten Stählen und Feinkornstählen - Einteilung (ISO/DIS 636:2013)
Produits consommables pour le soudage - Baguettes et fils pour dépôts par soudage
TIG des aciers non alliés et des aciers à grains fins - Classification (ISO/DIS 636:2013)
Ta slovenski standard je istoveten z: prEN ISO 636
ICS:
25.160.20 Potrošni material pri varjenju Welding consumables
oSIST prEN ISO 636:2013 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 636:2013

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oSIST prEN ISO 636:2013
DRAFT INTERNATIONAL STANDARD
ISO/DIS 636
ISO/TC 44/SC 3 Secretariat: ANSI
Voting begins on: Voting terminates on:
2013-09-12 2014-02-12
Welding consumables — Rods, wires and deposits for
tungsten inert gas welding of non-alloy and fine-grain
steels — Classification
Produits consommables pour le soudage — Baguettes et fils pour dépôts par soudage TIG des aciers non
alliés et des aciers à grains fins — Classification
[Revision of third edition (ISO 636:2004)]
ICS: 25.160.20
ISO/CEN PARALLEL PROCESSING
This draft has been developed within the International Organization for
Standardization (ISO), and processed under the ISO lead mode of collaboration
as defined in the Vienna Agreement.
This draft is hereby submitted to the ISO member bodies and to the CEN member
bodies for a parallel five month enquiry.
Should this draft be accepted, a final draft, established on the basis of comments
received, will be submitted to a parallel two-month approval vote in ISO and
THIS DOCUMENT IS A DRAFT CIRCULATED
formal vote in CEN.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
To expedite distribution, this document is circulated as received from the
IN ADDITION TO THEIR EVALUATION AS
committee secretariat. ISO Central Secretariat work of editing and text
BEING ACCEPTABLE FOR INDUSTRIAL,
composition will be undertaken at publication stage.
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 636:2013(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 2013

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oSIST prEN ISO 636:2013
ISO/DIS 636:2013(E)

Copyright notice
This ISO document is a Draft International Standard and is copyright-protected by ISO. Except as
permitted under the applicable laws of the user’s country, neither this ISO draft nor any extract
from it may be reproduced, stored in a retrieval system or transmitted in any form or by any means,
electronic, photocopying, recording or otherwise, without prior written permission being secured.
Requests for permission to reproduce should be addressed to 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 [e-mail]
Web www.iso.org
Reproduction may be subject to royalty payments or a licensing agreement.
Violators may be prosecuted.
ii © ISO 2013 – All rights reserved

---------------------- Page: 4 ----------------------
oSIST prEN ISO 636:2013
ISO/DIS 636
Contents Page
Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Classification . 2
4 Symbols and requirements . 2
4.1 Symbol for the product/process . 2
4.2 Symbol for strength and elongation of all-weld metal . 2
4.3 Symbol for impact properties of all-weld metal . 3
4.4 Symbol for the chemical composition of rods or wires . 4
5 Mechanical tests . 8
5.1 Preheating and interpass temperatures . 8
5.2 Welding conditions and pass sequence . 9
5.3 PWHT condition . 9
6 Chemical analysis . 9
7 Retests . 10
8 Technical delivery conditions . 10
9 Designation . 11

© ISO 2013 – All rights reserved iii

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oSIST prEN ISO 636:2013
ISO/DIS 636
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 636 was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee
SC 3, Welding consumables.
This fourth edition cancels and replaces the third edition which has been technically revised.
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oSIST prEN ISO 636:2013
ISO/DIS 636
Introduction
This International Standard provides a classification for the designation of rods and wires in terms of their
chemical composition and, where required, in terms of the yield strength, tensile strength and elongation of
the all-weld metal. The ratio of yield 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 will not
necessarily ensure that the weld metal tensile strength matches that of the parent material. Where the
application requires matching tensile strengths, selection of consumable should be made by reference to
column 3 of Table 1A or Table 1B.
It should be noted that the mechanical properties of all-weld metal test specimens used to classify the rods
and wires vary from those obtained in production joints because of differences in welding procedure such as
diameter, width of weave, welding position and material composition.
The classification according to system A is mainly based on EN 1668:1997, Welding consumables — Rods,
wires and deposits for tungsten inert gas welding of non alloy and fine grain steels — Classification. The
classification according to system B is mainly based upon standards used around the Pacific Rim.
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 which can be found at
www.iso.org.

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oSIST prEN ISO 636:2013

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oSIST prEN ISO 636:2013
DRAFT INTERNATIONAL STANDARD ISO/DIS 636

Welding consumables — Rods, wires and deposits for tungsten
inert gas welding of non-alloy and fine-grain steels —
Classification
1 Scope
This International Standard specifies requirements for classification of rods and wires in the as-welded
condition and in the post-weld heat-treated condition for tungsten inert gas welding of non-alloy and fine grain
steels with a minimum yield strength of up to 500 MPa or a minimum tensile strength of up to 570 MPa.
This International Standard is a combined specification providing 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.
1) Paragraphs and tables which carry the suffix letter “A” are applicable only to rods and wires classified
to the system based upon the yield strength and the average impact energy of 47 J of all-weld metal
in accordance with this International Standard.
2) Paragraphs and tables which carry the suffix letter “B” are applicable only to rods and wires classified
to the system based upon the tensile strength and the average impact energy of 27 J of all-weld
metal in accordance with this International Standard.
3) Paragraphs and tables which have neither the suffix letter “A” nor the suffix letter “B” are applicable
to all rods and wires classified in accordance with this International Standard.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 544, Welding consumables – Technical delivery conditions for filler materials and fluxes – Type of product,
dimensions, tolerances and markings
ISO 13916, Welding — Guidance on the measurement of preheating temperature, interpass temperature and
preheat maintenance temperature
ISO 14175, Welding consumables – Gases and gas mixtures for fusion welding and allied processes
ISO 14344, Welding consumables – Procurement of filler materials and fluxes
ISO 15792-1:2000/Amd 1:2011, 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
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oSIST prEN ISO 636:2013
ISO/DIS 636
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 rods or wires. The two designation approaches include
additional designators for some other classification requirements, but not all, as will be clear from the following
sections. In most cases, a given commercial product can be classified to the classification requirements in
both systems. Then either or both classification designations can be used for the product.
Rods or wires shall be classified according to their chemical composition in accordance with Table 3A or
Table 3B.
3A Classification by yield strength and 3B Classification by tensile strength and
47 J impact energy 27 J impact energy
The classification is divided into four parts: The classification is divided into four 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 the all-weld
the strength and elongation of the all-weld
metal in either the as-welded or post-weld
metal (see Table 1A);
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 properties of all-weld metal (see
impact properties of all-weld metal in the
Table 2);
same condition as specified for the tensile
strength (see Table 2). The letter “U” after
4) the fourth part gives a symbol indicating
this designator indicates that the deposit
the chemical composition of the rods or
meets an average optional requirement of
wires used (see Table 3A).
47 J at the designated Charpy test
temperature;
4) the fourth part gives a symbol indicating
the chemical composition of the rods or
wires used (see Table 3B).
4 Symbols and requirements
4.1 Symbol for the product/process
The symbol of weld deposit by the tungsten inert gas welding process shall be the letter “W” placed at the
beginning of the designation.
The symbol of rods or wires for the tungsten inert gas welding shall be the letter “W” placed at the beginning
of the rod or wire designation.
4.2 Symbol for strength and elongation of all-weld metal
4.2A Classification by yield strength and 47 J 4.2B Classification by tensile strength and
impact energy 27 J impact energy
The symbol in Table 1A indicates yield strength, The symbol in Table 1B indicates yield strength,
tensile strength and elongation of the all-weld metal tensile strength and elongation of the all-weld metal
in the as-welded condition determined in in the as-welded condition or in the post-weld heat-
accordance with Clause 5. treated condition determined in accordance with
Clause 5.
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oSIST prEN ISO 636:2013
ISO/DIS 636
Table 1A — Symbol for strength and elongation Table 1B — Symbol for strength and elongation
of all-weld metal of all-weld metal
Minimum Minimum
Tensile Minimum Tensile Minimum
yield yield
b c
strength elongation strength elongation
a
a b
Symbol Symbol
strength strength
MPa MPa % MPa MPa %
35 355 440 to 570 22 43X 330 430 to 600 20
38 380 470 to 600 20 49X 390 490 to 670 18
42 420 500 to 640 20 55X 460 550 to 740 17
46 460 530 to 680 20 57X 490 570 to 770 17
a
50 500 560 to 720 18
X is “A” or “P”. Where “A” indicates testing in the as-welded
condition and “P” indicates testing in the post-weld heat-treated
a
For yield strength the lower yield (R ) is used when
eL condition.
yielding occurs, otherwise the 0,2 % proof strength (R ) is
p0,2
b
For yield strength the lower yield (R ) is used when
used.
eL
yielding occurs, otherwise the 0,2 % proof strength (R ) is
p0,2
b
Gauge length is equal to five times the test specimen used.
diameter.
c
Gauge length is equal to five times the test specimen
diameter.

4.3 Symbol for impact properties of all-weld metal
4.3A Classification by yield strength and 47 J 4.3B Classification by tensile strength and
impact energy 27 J impact energy
The symbols in Table 2 indicates the temperature at The symbol in Table 2 indicates the temperature at
which an impact energy of
...