SIST EN ISO 14171:2011
(Main)Welding consumables - Solid wire electrodes, tubular cored electrodes and electrode/flux combinations for submerged arc welding of non alloy and fine grain steels - Classification (ISO 14171:2010)
Welding consumables - Solid wire electrodes, tubular cored electrodes and electrode/flux combinations for submerged arc welding of non alloy and fine grain steels - Classification (ISO 14171:2010)
This International Standard specifies requirements for the classification of electrode/flux combinations and weld metal in the as-welded condition and in the post weld heat-treated condition for submerged arc welding of non alloy and fine grain steels with a minimum yield strength of up to 500 MPa or a minimum tensile strength of up to 570 MPa. One flux may be classified with different solid wire electrodes and tubular cored electrodes. The solid wire electrode is also classified separately based on chemical composition. This document constitutes a combined specification providing classification utilizing a system based upon the yield strength and the average impact energy for weld metal of 47 J, or utilizing a system based upon the tensile strength and the average impact energy for weld metal of 27 J. 1) Paragraphs and tables which carry the suffix letter "A" are applicable only to electrode/flux combinations and wire electrodes classified using the system based upon the yield strength and the average impact energy for weld metal of 47 J , in accordance with this International Standard. 2) Paragraphs and tables which carry the suffix letter "B" are applicable only to electrode/flux combinations and wire electrodes classified using the system based upon the tensile strength and the average impact energy for weld metal of 27 J, 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 electrode/flux combinations and wire electrodes classified in accordance with this International Standard. Fluxes for the single-run and two-run techniques are classified on the basis of the two-run technique.
Schweißzusätze - Massivdrahtelektroden, Fülldrahtelektroden und Drahtpulver-Kombinationen zum Unterpulverschweißen von unlegierten Stählen und Feinkornstählen - Einteilung (ISO 14171:2010)
Diese Norm legt Anforderungen für die Einteilung von Drahtpulver-Kombinationen und reinem Schweißgut im
Schweißzustand und nach einer Wärmenachbehandlung für das Unterpulverschweißen von unlegierten
Stählen und Feinkornstählen mit einer Mindeststreckgrenze bis zu 500 MPa oder einer Mindestzugfestigkeit
bis zu 570 MPa fest. Ein Pulver kann mit verschiedenen Massivdrahtelektroden oder Fülldrahtelektroden
eingestuft werden. Die Drahtelektrode wird ebenfalls getrennt nach ihrer chemischen Zusammensetzung
eingeteilt.
Dieses Dokument 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 Drahtpulver-
Kombinationen und Drahtelektroden 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 Drahtpulver-
Kombinationen und Drahtelektroden 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 Drahtpulver-Kombinationen und Drahtelektroden anwendbar.
Pulver, die für Einlagen- und Lage/Gegenlage-Schweißen geeignet sind, werden entsprechend dem
Lage/Gegenlage-Schweißen eingeteilt.
Produits consommables pour le soudage - Fils-électrodes pleins, fils-électrodes fourrés et couples fils-flux pour le soudage à l'arc sous flux des aciers non alliés et à grains fins - Classification (ISO 14171:2010)
L'ISO 14171:2010 spécifie les exigences de classification des couples fils-flux et du métal fondu hors dilution, à l'état brut de soudage et à l'état traité thermiquement après soudage, pour le soudage à l'arc sous flux 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. Un flux peut être classifié avec des fils-électrodes pleins et des fils-électrodes fourrés différents. Le fil-électrode plein est également classifié séparément en fonction de sa composition chimique.
L'ISO 14171:2010 est une spécification combinée permettant une classification utilisant un système basé sur la limite d'élasticité et l'énergie de rupture moyenne de 47 J d'un métal fondu hors dilution, ou utilisant un système basé sur la résistance à la traction et l'énergie de rupture moyenne de 27 J pour le métal fondu hors dilution.
Dodajni in potrošni materiali za varjenje - Žice, strženske žice in kombinacije žica/prašek za obločno varjenje pod praškom nelegiranih in finozrnatih jekel - Razvrstitev (ISO 14171:2010)
Ta mednarodni standard določa zahteve za razvrstitev kombinacij žica/prašek in taljene kovine v varjenem stanju in s toplotno obdelavo po varjenju pri obločnem varjenju pod praškom nelegiranih in drobnozrnatih jekel z minimalno mejo prožnosti do 500 MPa ali minimalno natezno trdnostjo do 570 MPa. En prašek je lahko razvrščen z različnimi žicami in strženskimi žicami. Žica se razvrsti tudi ločeno na osnovi kemične sestave. Ta dokument podaja kombinirano specifikacijo, ki omogoča razvrstitev z uporabo sistema na osnovi meje prožnosti in povprečne udarne energije vara 47 J ali z uporabo sistema na osnovi natezne trdnosti in povprečne udarne energije vara 27 J. 1) Odstavki in razpredelnice, ki so označeni z dodatno črko »A«, veljajo le za kombinacije žica/prašek in žice, razvrščene po sistemu na osnovi meje prožnosti in povprečne udarne energije vara 47 J, v skladu s tem mednarodnim standardom. 2) Odstavki in razpredelnice, označene z dodatno črko B, veljajo le za kombinacije žica/prašek in žice, razvrščene po sistemu na osnovi natezne trdnosti in povprečne udarne energije vara 27 J, v skladu s tem mednarodnim standardom. 3) Odstavki in razpredelnice brez dodatne črke »A« ali »B« veljajo za vse kombinacije žica/prašek in žice, razvrščene v skladu s tem mednarodnim standardom. Praški za tehnike v enem prehodu in dveh prehodih so razvrščeni na osnovi tehnike v dveh prehodih.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 14171:2011
01-april-2011
1DGRPHãþD
SIST EN 756:2004
'RGDMQLLQSRWURãQLPDWHULDOL]DYDUMHQMHäLFHVWUåHQVNHåLFHLQNRPELQDFLMH
åLFDSUDãHN]DREORþQRYDUMHQMHSRGSUDãNRPQHOHJLUDQLKLQILQR]UQDWLKMHNHO
5D]YUVWLWHY ,62
Welding consumables - Solid wire electrodes, tubular cored electrodes and electrode/flux
combinations for submerged arc welding of non alloy and fine grain steels - Classification
(ISO 14171:2010)
Schweißzusätze - Massivdrahtelektroden, Fülldrahtelektroden und Drahtpulver-
Kombinationen zum Unterpulverschweißen von unlegierten Stählen und Feinkornstählen
- Einteilung (ISO 14171:2010)
Produits consommables pour le soudage - Fils-électrodes pleins, fils-électrodes fourrés
et couples fils-flux pour le soudage à l'arc sous flux des aciers non alliés et à grains fins -
Classification (ISO 14171:2010)
Ta slovenski standard je istoveten z: EN ISO 14171:2010
ICS:
25.160.20 Potrošni material pri varjenju Welding consumables
SIST EN ISO 14171:2011 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 14171:2011
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SIST EN ISO 14171:2011
EUROPEAN STANDARD
EN ISO 14171
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2010
ICS 25.160.20 Supersedes EN 756:2004
English Version
Welding consumables - Solid wire electrodes, tubular cored
electrodes and electrode/flux combinations for submerged arc
welding of non alloy and fine grain steels - Classification (ISO
14171:2010)
Produits consommables pour le soudage - Fils-électrodes Schweißzusätze - Massivdrahtelektroden,
pleins, fils-électrodes fourrés et couples fils-flux pour le Fülldrahtelektroden und Draht-Pulver-Kombinationen zum
soudage à l'arc sous flux des aciers non alliés et à grains Unterpulverschweißen von unlegierten Stählen und
fins - Classification (ISO 14171:2010) Feinkornstählen - Einteilung (ISO 14171:2010)
This European Standard was approved by CEN on 30 September 2010.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14171:2010: E
worldwide for CEN national Members.
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SIST EN ISO 14171:2011
EN ISO 14171:2010 (E)
Contents Page
Foreword .3
2
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SIST EN ISO 14171:2011
EN ISO 14171:2010 (E)
Foreword
The text of ISO 14171:2010 has been prepared by Technical Committee ISO/TC 44 “Welding and allied
processes” of the International Organization for Standardization (ISO) and has been taken over as
EN ISO 14171:2010 by Technical Committee CEN/TC 121 “Welding” the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by April 2011, and conflicting national standards shall be withdrawn at the
latest by April 2011.
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 756:2004.
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 14171:2010 has been approved by CEN as a EN ISO 14171:2010 without any modification.
3
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SIST EN ISO 14171:2011
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SIST EN ISO 14171:2011
INTERNATIONAL ISO
STANDARD 14171
Second edition
2010-10-01
Welding consumables — Solid wire
electrodes, tubular cored electrodes and
electrode/flux combinations for
submerged arc welding of non alloy and
fine grain steels — Classification
Produits consommables pour le soudage — Fils-électrodes pleins, fils-
électrodes fourrés et couples fils-flux pour le soudage à l'arc sous flux
des aciers non alliés et à grains fins — Classification
Reference number
ISO 14171:2010(E)
©
ISO 2010
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SIST EN ISO 14171:2011
ISO 14171:2010(E)
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Published in Switzerland
ii © ISO 2010 – All rights reserved
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SIST EN ISO 14171:2011
ISO 14171:2010(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 process.3
4.2 Symbol for tensile properties.3
4.2.1 Multi-run technique .3
4.2.2 Two-run technique .4
4.3 Symbol for the impact properties of all-weld metal or two-run welded joint.4
4.4 Symbol for type of welding flux .5
4.5 Symbol for the chemical composition .6
4.5.1 Solid wire electrodes.6
4.5.2 Tubular cored electrode/flux combinations.6
4.6 Symbol for hydrogen content of deposited metal .14
5 Mechanical tests.14
5.1 Multi-run technique .14
5.2 Two-run technique .16
6 Chemical analysis .16
7 Rounding procedure .17
8 Retest.17
9 Technical delivery conditions .17
10 Examples of designation .18
© ISO 2010 – All rights reserved iii
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SIST EN ISO 14171:2011
ISO 14171:2010(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 14171 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 14171:2002), which has been technically
revised.
Requests for official interpretations of any aspect of this International Standard should be directed to the
Secretariat of ISO/TC 44/SC 3 via your national standards body. A complete listing of these bodies can be
found at www.iso.org.
iv © ISO 2010 – All rights reserved
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SIST EN ISO 14171:2011
ISO 14171:2010(E)
Introduction
This International Standard recognizes that there are two somewhat different approaches in the global market
to classifying a given 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 Standard.
This International Standard provides a classification system 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 and elongation 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 material yield strength does not necessarily ensure that the weld metal tensile strength
matches that of the parent material. Thus, where the application of the material requires matching tensile
strengths, selection of the consumable should be made by reference to column 3 of Table 1A or 1B, as
appropriate.
Although combinations of electrodes and fluxes supplied by individual companies may have the same
classification, the individual wire electrodes and fluxes from different companies are not interchangeable
unless verified in accordance with this International Standard.
The mechanical properties of 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 and parent material composition.
© ISO 2010 – All rights reserved v
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SIST EN ISO 14171:2011
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SIST EN ISO 14171:2011
INTERNATIONAL STANDARD ISO 14171:2010(E)
Welding consumables — Solid wire electrodes, tubular cored
electrodes and electrode/flux combinations for submerged arc
welding of non alloy and fine grain steels — Classification
1 Scope
This International Standard specifies requirements for the classification of electrode/flux combinations and
weld metal in the as-welded condition and in the post-weld heat-treated condition for submerged arc welding
of non alloy and fine grain steels with a minimum yield strength of up to 500 MPa or a minimum tensile
strength of up to 570 MPa. One flux can be classified with different solid wire electrodes and tubular cored
electrodes. The solid wire electrode is also classified separately based on chemical composition.
This International Standard is a combined specification providing for classification utilizing a system based
upon the yield strength and the average impact energy for weld metal of 47 J, or utilizing a system based
upon the tensile strength and the average impact energy for weld metal of 27 J.
a) Clauses, subclauses, and tables which carry the suffix letter “A” are applicable only to electrode/flux
combinations and wire electrodes classified using the system based upon the yield strength and the
average impact energy for weld metal of 47 J, in accordance with this International Standard.
b) Clauses, subclauses, and tables which carry the suffix letter “B” are applicable only to electrode/flux
combinations and wire electrodes classified using the system based upon the tensile strength and the
average impact energy for weld metal of 27 J, 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 electrode/flux combinations and wire electrodes classified in accordance with this
International Standard.
Fluxes for the single-run and two-run techniques are classified on the basis of the two-run technique.
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 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 2010 – All rights reserved 1
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SIST EN ISO 14171:2011
ISO 14171:2010(E)
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 15792-2:2000, Welding consumables — Test methods — Part 2: Preparation of single-run and two-run
technique test specimens in steel
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 weld metal obtained with a given electrode/flux combination. The two designation
approaches include additional symbols for some other classification requirements, but not all, as is clear from
the following clauses. In most cases, a given commercial product can be classified in accordance with both
systems. Then either or both classification designations can be used for the product.
A solid wire electrode shall be classified in accordance with its chemical composition as given in Table 4A
or 4B.
An all-weld metal deposit from a tubular cored electrode shall be classified in accordance with the all-weld
metal composition, as given in Table 5A or 5B, 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.
The electrode/flux classification includes weld metal properties obtained with a manufacturer's specific
electrode/flux combination as given below. A wire electrode may be separately classified with the symbol for
its chemical composition in Table 4A or 4B.
3A Classification by yield strength and 47 J 3B Classification by tensile strength and 27 J
impact energy impact energy
The classification is divided into five mandatory The classification is divided into five mandatory
parts and an optional sixth part: parts and an optional sixth part:
1) the first part gives a symbol indicating the 1) the first part gives a symbol indicating the
process to be identified; process to be identified;
2) the second part gives a symbol indicating 2) the second part gives a symbol indicating
the strength and elongation of all-weld the strength and elongation of all-weld
metal for multi-run technique or the metal in either the as-welded or post-weld
strength of the parent material used in heat-treated condition for a multi-run
classification for the two-run technique technique or the specified minimum
(see Table 1A or 2A); tensile strength of the parent material or
the weld metal used in classification for
the two-run technique (see Table 1B or
2B);
2 © ISO 2010 – All rights reserved
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SIST EN ISO 14171:2011
ISO 14171:2010(E)
3) the third part gives a symbol indicating the 3) the third part gives a symbol indicating the
impact properties of all-weld metal or impact properties of all-weld metal or
welded joint (see Table 3); welded joint in the same condition as
specified for the tensile strength (see
Table 3). The letter “U” after this
designator indicates that the deposit
meets an average optional requirement of
47 J at the designated Charpy test
temperature;
4) the fourth part gives a symbol indicating 4) the fourth part gives a symbol indicating
the type of flux used in accordance with the type of flux used in accordance with
ISO 14174 (see 4.4); ISO 14174 (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 chemical composition of the solid wire
electrode used (see Table 4A) or the electrode used (see Table 4B) or the
chemical composition of the all-weld chemical composition of the all-weld
metal obtained with a tubular cored metal obtained with a tubular cored
electrode/flux combination (see Table electrode/flux combination (see Table
5A); 5B);
6) the sixth part gives an optional symbol 6) the sixth part gives an optional symbol
indicating the diffusible hydrogen content indicating the diffusible hydrogen content
of the weld metal obtained in accordance of the weld metal obtained in accordance
with ISO 3690 (see Table 6). with ISO 3690 (see Table 6).
4 Symbols and requirements
4.1 Symbol for the process
The symbol for an electrode/flux combination used in the submerged arc welding process shall be the letter S
at the beginning of the designation.
4.2 Symbol for tensile properties
4.2.1 Multi-run technique
4.2.1A Classification by yield strength and 4.2.1B Classification by tensile strength and
47 J impact energy 27 J impact energy
For products suitable for multi-run welding, the For products suitable for multi-run welding, the
symbols in Table 1A indicate yield strength, tensile symbols in Table 1B indicate yield strength, tensile
strength and elongation of the all-weld metal in the strength and elongation of the all-weld metal in the
as-welded condition determined in accordance with as-welded condition or in the post-weld heat-treated
5.1A. condition determined in accordance with 5.1B.
© ISO 2010 – All rights reserved 3
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SIST EN ISO 14171:2011
ISO 14171:2010(E)
Table 1A — Symbols for tensile properties Table 1B — Symbols for tensile properties
by multi-run technique by multi-run technique
(Classification by yield strength (Classification by tensile strength
and 47 J impact energy) and 27 J impact energy)
Minimum yield Tensile Minimum Minimum yield Tensile Minimum
a b b c
a
strength strength elongation strength strength elongation
Symbol Symbol
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 strength, R , is used
eL
condition.
when yielding occurs, otherwise the 0,2 % proof strength, R ,
p0,2
b
For yield strength, the 0,2 % proof strength, R , is used.
is used. p0,2
c
b
Gauge length is equal to five times the test specimen
Gauge length is equal to five times the test specimen
diameter.
diameter.
4.2.2 Two-run technique
For products suitable for two-run welding, the symbols in Table 2A or 2B indicate the minimum tensile strength
of the welded joint in relation to the specified minimum strength of the parent material used in two-run welding
tests satisfactorily completed in accordance with 5.2.
Table 2A — Symbols for tensile properties Table 2B — Symbols for tensile properties
by two-run technique by two-run technique
(Classification by yield strength (Classification by tensile strength
and 47 J impact energy) and 27 J impact energy)
Minimum parent Minimum tensile
Minimum tensile strength of the parent
material yield strength Symbol
material and of the welded joint
Symbol
strength of the welded joint
MPa MPa MPa
2T 275 370 43S 430
3T 355 470 49S 490
4T 420 520 55S 550
5T 500 600 57S 570
4.3 Symbol for the impact properties of all-weld metal or two-run welded joint
The symbols in Table 3 indicate the temperature at which an impact energy of 47 J or 27 J is achieved under
the conditions given in Clause 5.
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SIST EN ISO 14171:2011
ISO 14171:2010(E)
4.3A Classification by yield strength and 47 J 4.3B Classification by tensile strength and
impact energy 27 J impact energy
Three test specimens shall be tested. Only one Five test specimens shall be tested. The lowest and
individual value may be lower than 47 J but not highest values obtained shall be disregarded. Two
lower than 32 J. of 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
requirement of 4.3A.
When an all-weld metal or a welded joint has been classified for a certain temperature, it automatically covers
any higher temperature in Table 3.
Table 3 — Symbols for impact properties of all-weld metal or welded joint
ab b
Temperature for minimum average impact energy of 47 J or 27 J
Symbol
°C
Z No requirements
a b
A or Y +20
0 0
2 −20
3 −30
4 −40
5 −50
6 −60
7 −70
8 −80
9 −90
10 −100
a
See 4.3A.
b
See 4.3B.
4.4 Symbol for type of welding flux
The symbol for welding flux type shall be in accordance with ISO 14174.
© ISO 2010 – All rights reserved 5
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SIST EN ISO 14171:2011
ISO 14171:2010(E)
4.5 Symbol for the chemical composition
4.5.1 Solid wire electrodes
The symbols in Tables 4A and 4B indicate the chemical composition of the solid wire electrode and include an
indication of characteristic alloying elements.
The symbol for a wire electrode used in the submerged arc welding process shall be the letters S or SU at the
beginning of the wire electrode designation.
NOTE The chemical composition of the weld metal is dependent on the chemical composition of the wire electrode
and the metallurgical behaviour of the flux (see ISO 14174).
4.5.2 Tubular cored electrode/flux combinations
The symbols in Tables 5A and 5B indicate the chemical composition of the all-weld metal obtained with a
tubular cored electrode/flux combination and include an indication of characteristic alloying elements.
The symbol for all-weld metal obtained with a tubular cored electrode used in the submerged arc welding
process shall be the letters T or TU at the beginning of the wire electrode designation.
In cases of dispute, the sample for all-weld metal deposit shall be in accordance with ISO 6847.
6 © ISO 2010 – All rights reserved
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SIST EN ISO 14171:2011
ISO 14171:2010(E)
© ISO 2010 – All rights reserved 7
Table 4A — Chemical composition of solid wire electrodes for submerged arc welding
(Classification by yield strength and 47 J impact energy)
abc
Chemical composition, % (by mass)
Symbol
C Si Mn P S Mo Ni Cr Cu
S1 0,05 to 0,15 0,15 0,35 to 0,60 0,025 0,025 0,15 0,15 0,15 0,30
S2 0,07 to 0,15 0,15 0,80 to 1,30 0,025 0,025 0,15 0,15 0,15 0,30
S3 0,07 to 0,15 0,15 1,30 to 1,75 0,025 0,025 0,15 0,15 0,15 0,30
S4 0,07 to 0,15 0,15 1,75 to 2,25 0,025 0,025 0,15 0,15 0,15 0,30
S1Si 0,07 to 0,15 0,15 to 0,40 0,35 to 0,60 0,025 0,025 0,15 0,15 0,15 0,30
S2Si 0,07 to 0,15 0,15 to 0,40 0,80 to 1,30 0,025 0,025 0,15 0,15 0,15 0,30
S2Si2 0,07 to 0,15 0,40 to 0,60 0,80 to 1,30 0,025 0,025 0,15 0,15 0,15 0,30
S3Si 0,07 to 0,15 0,15 to 0,40 1,30 to 1,85 0,025 0,025 0,15 0,15 0,15 0,30
S4Si 0,07 to 0,15 0,15 to 0,40 1,85 to 2,25 0,025 0,025 0,15 0,15 0,15 0,30
S1Mo 0,05 to 0,15 0,05 to 0,25 0,35 to 0,60 0,025 0,025 0,45 to 0,65 0,15 0,15 0,30
S2Mo 0,07 to 0,15 0,05 to 0,25 0,80 to 1,30 0,025 0,025 0,45 to 0,65 0,15 0,15 0,30
d
S2MoTiB 0,05 to 0,15 0,15 to 0,35 1,00 to 1,35 0,025
...
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