EN ISO 17633:2010

SLOVENSKI STANDARD
01-januar-2012
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Welding consumables - Tubular cored electrodes and rods for gas shielded and non-gas
shielded metal arc welding of stainless and heat-resisting steels - Classification (ISO
17633:2010)
Schweißzusätze - Fülldrahtelektroden und Füllstäbe zum Metall-Lichtbogenschweißen
mit und ohne Gasschutz von korrosionsbeständigen und hitzebeständigen Stählen -
Einteilung (ISO 17633:2010)
Produits consommables pour le soudage - Fils et baguettes fourrés pour le soudage à
l'arc avec ou sans protection gazeuse des aciers inoxydables et des aciers résistant aux
températures élevées - Classification (ISO 17633:2010)
Ta slovenski standard je istoveten z: EN ISO 17633:2010
ICS:
25.160.20 Potrošni material pri varjenju Welding consumables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 17633
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2010
ICS 25.160.20 Supersedes EN ISO 17633:2006
English Version
Welding consumables - Tubular cored electrodes and rods for
gas shielded and non-gas shielded metal arc welding of
stainless and heat-resisting steels - Classification (ISO
17633:2010)
Produits consommables pour le soudage - Fils et baguettes Schweißzusätze - Fülldrahtelektroden und Füllstäbe zum
fourrés pour le soudage à l'arc avec ou sans protection Metall-Lichtbogenschweißen mit und ohne Gasschutz von
gazeuse des aciers inoxydables et des aciers résistant aux nichtrostenden und hitzebeständigen Stählen - Einteilung
températures élevées - Classification (ISO 17633:2010) (ISO 17633:2010)
This European Standard was approved by CEN on 30 October 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-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 17633:2010: E
worldwide for CEN national Members.

Contents Page
Foreword .3

Foreword
This document (EN ISO 17633:2010) has been prepared by Technical Committee ISO/TC 44 “Welding and
allied processes” of the International Organization for Standardization (ISO) in collaboration with Technical
Committee CEN/TC 121 “Welding” the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by May 2011, and conflicting national standards shall be withdrawn at the
latest by May 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 ISO 17633:2006.
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 17633:2010 has been approved by CEN as a EN ISO 17633:2010 without any modification.

INTERNATIONAL ISO
STANDARD 17633
Second edition
2010-11-01
Welding consumables — Tubular cored
electrodes and rods for gas shielded
and non-gas shielded metal arc welding
of stainless and heat-resisting steels —
Classification
Produits consommables pour le soudage — Fils et baguettes fourrés
pour le soudage à l'arc avec ou sans protection gazeuse des aciers
inoxydables et des aciers résistant aux températures élevées —
Classification
Reference number
ISO 17633:2010(E)
©
ISO 2010
ISO 17633:2010(E)
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ii © ISO 2010 – All rights reserved

ISO 17633:2010(E)
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.3
4.2 Symbol for the chemical composition of all-weld metal .3
4.3 Symbol for type of electrode core .16
4.4 Symbol for shielding gas.16
4.5 Symbol for welding position .16
5 Mechanical test.17
5.1 Preheating and interpass temperatures.17
5.2 Pass sequence.18
6 Chemical analysis .18
7 Fillet weld test.18
8 Rounding procedure .19
9 Retests.19
10 Technical delivery conditions .20
11 Examples of designation .20
Annex A (informative) Comparison charts of alloy designation according to nominal
composition and alloy type .21
Annex B (informative) Description of types of electrode core — Classification according to
nominal composition .22
Annex C (informative) Description of types of tubular cored electrodes and rods —
Classification according to alloy type.23
Annex D (informative) Considerations on weld metal ferrite contents .24
Bibliography.27

ISO 17633:2010(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.
ISO 17633 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 17633:2004), of which it constitutes a technical
revision.
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

ISO 17633:2010(E)
Introduction
This International Standard provides a classification system for tubular cored electrodes and rods for welding
stainless steels. It recognizes that there are two somewhat different approaches in the global market to
classifying a given tubular stainless steel welding consumable, 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.
[2]
The classification according to system A is mainly based on EN 12073:1999 . The classification according to
system B is mainly based upon standards used around the Pacific Rim.

INTERNATIONAL STANDARD ISO 17633:2010(E)

Welding consumables — Tubular cored electrodes and rods
for gas shielded and non-gas shielded metal arc welding of
stainless and heat-resisting steels — Classification
1 Scope
This International Standard specifies requirements for classification of tubular flux and metal cored electrodes
and rods, based on the all-weld metal chemical composition, the type of electrode core, shielding gas, welding
position and the all-weld metal mechanical properties, in the as-welded or heat-treated conditions, for gas
shielded and non-gas shielded metal arc welding of stainless and heat-resisting steels.
This International Standard is a combined standard providing for classification utilizing a system based upon
nominal composition or utilizing a system based upon alloy type.
a) Clauses, subclauses, and tables which carry the suffix letter “A” are applicable only to products classified
using the system based upon nominal composition.
b) Clauses, subclauses, and tables which carry the suffix letter “B” are applicable only to products classified
using the system based upon alloy type.
c) Clauses, subclauses, and tables which do not have either the suffix letter “A” or the suffix letter “B” are
applicable to all tubular cored electrodes classified in accordance with this International Standard.
It is recognized that the operating characteristics of tubular cored electrodes can be modified by the use of
pulsed current. However, this International Standard does not use pulsed current for determining the electrode
classification.
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 6847, Welding consumables — Deposition of a weld metal pad for chemical analysis
ISO 6947:2010, Welding and allied processes — Welding positions
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
ISO 17633:2010(E)
ISO 15792-3, Welding consumables — Test methods — Part 3: Classification testing of positional capacity
and root penetration of welding consumables in a fillet weld
ISO 80000-1:2009, Quantities and units — Part 1: General
3 Classification
Classification designations are based upon two approaches to indicating the chemical composition of the all-
weld metal deposit obtained with a given electrode or rod.
The “nominal composition” approach uses designation components indicating directly the nominal levels of
certain alloying elements, given in a particular order, and some symbols for low but significant levels of other
elements, whose levels are not conveniently expressed as integers. The “alloy type” approach uses tradition-
based three- or four-digit designations for alloy families, and an occasional additional character or characters
for compositional modifications of each original alloy within the family.
This clause includes the symbols for the type of product, the chemical composition of all-weld metal, the type
of electrode core, the shielding gas and the welding position, in accordance with the symbols defined in
Clause 4.
In most cases, a given commercial product can be classified in both systems. Then either or both
classification designations can be used for the product.
3A Classification according to nominal 3B Classification according to alloy type
composition
The classification is divided into five parts: The classification is divided into five parts:
a) the first part gives a symbol indicating the a) the first part gives a symbol indicating the
product to be identified (see 4.1A); tubular cored electrode and rod (see 4.1B);
b) the second part gives a symbol indicating the b) the second part gives a symbol indicating the
chemical composition of the all-weld metal (see chemical composition of the all-weld metal (see
Table 1A); Tables 1B-1 to -4);
c) the third part gives a symbol indicating the type c) the third part gives a symbol indicating the type
of electrode core (see Table 3A); of tubular cored electrode or rod (see Table 3B);
d) the fourth part gives a symbol indicating the d) the fourth part gives a symbol indicating the
shielding gas (see 4.4); shielding gas (see 4.4);
e) the fifth part gives a symbol indicating the e) the fifth part gives a symbol indicating the
welding position (see Table 4A). welding position (see Table 4B).
The full identification (see Clause 11) shall be used on packages and in the manufacturer's literature and data
sheets.
4 Symbols and requirements
A given tubular cored electrode may be classified with more than one shielding gas. In such cases, each
shielding gas results in a separate classification.
2 © ISO 2010 – All rights reserved

ISO 17633:2010(E)
4.1 Symbol for the product
4.1A Classification according to nominal 4.1B Classification according to alloy
composition type
The symbol for the tubular cored electrode used in The symbol for the tubular cored electrode or rod
the metal arc welding process shall be the letter “T”. used in the metal arc welding process shall be the
letters “TS”. The initial letter, “T”, indicates tubular
cored electrode or rod as distinguished from
covered electrodes and from solid electrodes and
rods. The second letter, “S”, indicates that the alloy
system is stainless or heat-resisting steel.
4.2 Symbol for the chemical composition of all-weld metal
4.2A Classification according to nominal 4.2B Classification according to alloy
composition type
The symbols in Table 1A identify the chemical The symbols in Table 1B-1 identify the chemical
composition of all-weld metal determined in composition of all-weld metal for gas shielded flux
accordance with Clause 6. cored electrodes determined in accordance with
Clause 6.
The all-weld metal obtained with the tubular cored
electrodes in Table 1A under conditions given in The symbols in Table 1B-2 identify the chemical
Clause 5 shall also fulfil the requirements given in composition of all-weld metal for non-gas shielded
Table 2A. (See Annex A.) flux cored electrodes determined in accordance with
Clause 6.
The symbols in Table 1B-3 identify the chemical
composition of all-weld metal for gas shielded metal
cored electrodes determined in accordance with
Clause 6.
The symbols in Table 1B-4 identify the chemical
composition of all-weld metal for cored rods for gas
tungsten arc welding determined in accordance with
Clause 6.
The all-weld metal obtained with the tubular cored
electrodes and rods in Tables 1B-1, 1B-2, 1B-3 and
1B-4 under conditions given in Clause 5 shall also
fulfil the requirements given in Table 2B. (See
Annex A.)
ISO 17633:2010(E)
4 © ISO 2010 – All rights reserved
Table 1A — Symbols and all-weld metal chemical composition requirements (classification according to nominal composition)
a, b
Alloy
Chemical composition, % (by mass)
designation
according to
c c d
C Mn Si P S Cr Ni Mo Nb + Ta Cu N Others
nominal
composition
Martensitic/ferritic types
13 0,12 1,5 1,0 0,030 0,025 11,0 to 14,0 0,3 0,3 — 0,5 — —
Ti: 10 × C
13 Ti 0,10 0,80 1,0 0,030 0,030 10,5 to 13,0 0,3 0,3 — 0,5 —
to 1,5
13 4 0,06 1,5 1,0 0,030 0,025 11,0 to 14,5 3,0 to 5,0 0,4 to 1,0 — 0,5 — —
17 0,12 1,5 1,0 0,030 0,025 16,0 to 18,0 0,3 0,3 — 0,5 — —
Austenitic types
19 9 L 0,04 2,0 1,2 0,030 0,025 18,0 to 21,0 9,0 to 11,0 0,3 — 0,5 — —
19 9 Nb 0,08 2,0 1,2 0,030 0,025 18,0 to 21,0 9,0 to 11,0 0,3 8 × C to 1,1 0,5 — —
19 12 3 L 0,04 2,0 1,2 0,030 0,025 17,0 to 20,0 10,0 to 13,0 2,5 to 3,0 — 0,5 — —
19 12 3 Nb 0,08 2,0 1,2 0,030 0,025 17,0 to 20,0 10,0 to 13,0 2,5 to 3,0 8 × C to 1,1 0,5 — —
Ferritic-austenitic types (sometimes referred to as austenitic-ferritic types)
22 9 3 N L 0,04 2,5 1,2 0,030 0,025 21,0 to 24,0 7,5 to 10,5 2,5 to 4,0 — 0,5 0,08 to 0,20 —
23 7 N L 0,04 0,4 to 1,5 1,0 0,030 0,020 22,5 to 25,5 6,5 to 10,0 0,8 — 0,5 0,10 to 0,20 —
25 9 4 N L 0,04 2,5 1,2 0,030 0,025 24,0 to 27,0 8,0 to 10,5 2,5 to 4,5 — — 0,20 to 0,30 —
1,0 to
25 9 4 Cu N L 0,04 2,5 1,2 0,030 0,025 24,0 to 27,0 8,0 to 10,5 2,5 to 4,5 — 0,20 to 0,30 —
2,5
Fully austenitic types
e
0,03 1,0 to 4,0 1,0 0,03 0,02 17,0 to 20,0 16,0 to 19,0 3,5 to 5,0 — 0,5 0,10 to 0,20 —
18 16 5 N L
e
0,04 1,0 to 5,0 1,2 0,030 0,025 17,0 to 20,0 12,0 to 15,0 3,0 to 4,5 — 0,5 0,08 to 0,20 —
19 13 4 N L
1,0 to
e
0,03 1,0 to 4,0 1,0 0,03 0,02 19,0 to 22,0 24,0 to 27,0 4,0 to 6,0 — 0,10 to 0,20 —
20 25 5 Cu N L
2,0
ISO 17633:2010(E)
Table 1A (continued)
a, b
Alloy
Chemical composition, % (by mass)
designation
according to
c c d
C Mn Si Cr Ni Mo Cu N Others
P S Nb + Ta
nominal
composition
Special types — Often used for dissimilar metal joining
18 8 Mn 0,20 4,5 to 7,5 1,2 0,035 0,025 17,0 to 20,0 7,0 to 10,0 0,3 — 0,5 — —
18 9 Mn Mo 0,04 to 0,14 3,0 to 5,0 1,2 0,035 0,025 18,0 to 21,5 9,0 to 11,0 0,5 to 1,5 — — — —
20 10 3 0,08 2,5 1,2 0,035 0,025 19,5 to 22,0 9,0 to 11,0 2,0 to 4,0 — 0,5 — —
23 12 L 0,04 2,5 1,2 0,030 0,025 22,0 to 25,0 11,0 to 14,0 0,3 — 0,5 — —
10 × C
23 12 Nb 0,08 1,0 to 2,5 1,0 0,03 0,02 22,0 to 25,0 11,0 to 14,0 0,3 0,5 — —
to 1,0
23 12 2 L 0,04 2,5 1,2 0,030 0,025 22,0 to 25,0 11,0 to 14,0 2,0 to 3,0 — 0,5 — —
29 9 0,15 2,5 1,2 0,035 0,025 27,0 to 31,0 8,0 to 12,0 0,3 — 0,5 — —
Heat-resisting types
Cr + Mo:
16 8 2 0,10 1,0 1,0 to 2,5 0,03 0,02 14,5 to 17,5 7,5 to 9,5 1,0 to 2,5 — 0,5 —
18,5
19 9 H 0,04 to 0,08 1,0 1,0 to 2,5 0,03 0,02 18,0 to 21,0 9,0 to 11,0 0,3 — 0,5 — —
21 10 N 0,06 to 0,09 0,3 to 1,0 1,0 to 2,0 0,02 0,01 20,5 to 22,5 9,5 to 11,0 0,5 — 0,5 0,10 to 0,20 Ce: 0,05
22 12 H 0,15 2,5 1,2 0,030 0,025 20,0 to 23,0 10,0 to 13,0 0,3 — 0,5 — —
25 4 0,15 2,0 1,0 to 2,5 0,03 0,02 24,0 to 27,0 4,0 to 6,0 0,3 — 0,5 — —

ISO 17633:2010(E)
6 © ISO 2010 – All rights reserved
Table 1A (continued)
a, b
Alloy
Chemical composition, % (by mass)
designation
according to
c c d
C Mn Si Cr Ni Mo Cu N Others
nominal P S Nb + Ta
composition
e
25 20 0,06 to 0,20 1,0 to 5,0 1,2 0,030 0,025 23,0 to 27,0 18,0 to 22,0 0,3 — 0,5 — —
f
Z Any other agreed composition
a
Single values are maximum values.
b
“No requirement for analysis” is indicated by a dash.
c
The sum of P and S shall not exceed 0,050 % (by mass), except for 18 16 5 N L, 18 8 Mn, and 29 9.
d
Up to 20 % (by mass) of the amount of Nb can be replaced by Ta.
e
The all-weld metal is in most cases fully austenitic and therefore can be susceptible to microfissuring or hot cracking. The occurrence of fissuring or cracking is reduced by increasing the weld
metal manganese level and in recognition of this the manganese range is extended for a number of grades.
f
Consumables for which the chemical composition is not listed shall be symbolized similarly and prefixed by the letter Z. The chemical composition ranges are not specified and it is possible
that two electrodes with the same Z classification are not interchangeable.

ISO 17633:2010(E)
Table 1B-1 — Symbols and all-weld metal chemical composition requirements of gas shielded flux cored electrodes
(classification according to alloy type)
a, b
Alloy
Chemical composition, % (by mass)
designation
Shielding
according
gas
C Mn Si P S Cr Ni Mo Nb + Ta Cu N Others
to alloy
type
(see 4.4)
C1, M12,
307 0,13 3,30 to 4,75 1,0 0,04 0,03 18,0 to 20,5 9,0 to 10,5 0,5 to 1,5 — 0,75 — —
M21, Z
C1, M12,
308 0,08 0,5 to 2,5 1,0 0,04 0,03 18,0 to 21,0 9,0 to 11,0 0,75 — 0,75 — —
M21, Z
C1, M12,
308L 0,04 0,5 to 2,5 1,0 0,04 0,03 18,0 to 21,0 9,0 to 12,0 0,75 — 0,75 — —
M21, Z
C1, M12,
308H 0,04 to 0,08 0,5 to 2,5 1,0 0,04 0,03 18,0 to 21,0 9,0 to 11,0 0,75 — 0,75 — —
M21, Z
C1, M12,
308Mo 0,08 0,5 to 2,5 1,0 0,04 0,03 18,0 to 21,0 9,0 to 11,0 2,0 to 3,0 — 0,75 — —
M21, Z
C1, M12,
308LMo 0,04 0,5 to 2,5 1,0 0,04 0,03 18,0 to 21,0 9,0 to 12,0 2,0 to 3,0 — 0,75 — —
M21, Z
C1, M12,
309 0,10 0,5 to 2,5 1,0 0,04 0,03 22,0 to 25,0 12,0 to 14,0 0,75 — 0,75 — —
M21, Z
C1, M12,
309L 0,04 0,5 to 2,5 1,0 0,04 0,03 22,0 to 25,0 12,0 to 14,0 0,75 — 0,75 — —
M21, Z
C1, M12,
309H 0,04 to 0,10 0,5 to 2,5 1,0 0,04 0,03 22,0 to 25,0 12,0 to 14,0 0,75 — 0,75 — —
M21, Z
C1, M12,
309Mo 0,12 0,5 to 2,5 1,0 0,04 0,03 21,0 to 25,0 12,0 to 16,0 2,0 to 3,0 — 0,75 — —
M21, Z
C1, M12,
309LMo 0,04 0,5 to 2,5 1,0 0,04 0,03 21,0 to 25,0 12,0 to 16,0 2,0 to 3,0 — 0,75 — —
M21, Z
C1, M12,
309LNb 0,04 0,5 to 2,5 1,0 0,04 0,03 22,0 to 25,0 12,0 to 14,0 0,75 0,7 to 1,0 0,75 — —
M21, Z
C1, M12,
309LNiMo 0,04 0,5 to 2,5 1,0 0,04 0,03 20,5 to 23,5 15,0 to 17,0 2,5 to 3,5 — 0,75 — —
M21, Z
ISO 17633:2010(E)
8 © ISO 2010 – All rights reserved
Table 1B-1 (continued)
Alloy a, b
Chemical composition, % (by mass)
designation
Shielding
according
gas C Mn Si P S Cr Ni Mo Nb + Ta Cu N Others
to alloy
(see 4.4)
type
C1, M12,
310 0,20 1,0 to 2,5 1,0 0,03 0,03 25,0 to 28,0 20,0 to 22,5 0,75 — 0,75 — —
M21, Z
C1, M12,
312 0,15 0,5 to 2,5 1,0 0,04 0,03 28,0 to 32,0 8,0 to 10,5 0,75 — 0,75 — —
M21, Z
C1, M12,
316 0,08 0,5 to 2,5 1,0 0,04 0,03 17,0 to 20,0 11,0 to 14,0 2,0 to 3,0 — 0,75 — —
M21, Z
C1, M12,
316L 0,04 0,5 to 2,5 1,0 0,04 0,03 17,0 to 20,0 11,0 to 14,0 2,0 to 3,0 — 0,75 — —
M21, Z
C1, M12,
316H 0,04 to 0,08 0,5 to 2,5 1,0 0,04 0,03 17,0 to 20,0 11,0 to 14,0 2,0 to 3,0 — 0,75 — —
M21, Z
C1, M12,
316LCu 0,04 0,5 to 2,5 1,0 0,04 0,03 17,0 to 20,0 11,0 to 16,0 1,25 to 2,75 — 1,0 to 2,5 — —
M21, Z
C1, M12,
317 0,08 0,5 to 2,5 1,0 0,04 0,03 18,0 to 21,0 12,0 to 14,0 3,0 to 4,0 — 0,75 — —
M21, Z
C1, M12,
317L 0,04 0,5 to 2,5 1,0 0,04 0,03 18,0 to 21,0 12,0 to 14,0 3,0 to 4,0 — 0,75 — —
M21, Z
C1, M12, 8 × C to
318 0,08 0,5 to 2,5 1,0 0,04 0,03 17,0 to 20,0 11,0 to 14,0 2,0 to 3,0 0,75 — —
M21, Z 1,0
C1, M12,
8 × C to
347 0,08 0,5 to 2,5 1,0 0,04 0,03 18,0 to 21,0 9,0 to 11,0 0,75 0,75 — —
M21, Z 1,0
C1, M12, 8 × C to
347L 0,04 0,5 to 2,5 1,0 0,04 0,03 18,0 to 21,0 9,0 to 11,0 0,75 0,75 — —
M21, Z 1,0
C1, M12, 8 × C to
347H 0,04 to 0,08 0,5 to 2,5 1,0 0,04 0,03 18,0 to 21,0 9,0 to 11,0 0,5 0,75 — —
M21, Z
1,0
C1, M12, Ti: 10 × C
409 0,10 0,80 1,0 0,04 0,03 10,5 to 13,5 0,6 0,75 — 0,75 —
M21, Z to 1,5
C1, M12, 8 × C to
409Nb 0,10 1,2 1,0 0,04 0,03 10,5 to 13,5 0,6 0,75 0,75 — —
M21, Z 1,5
ISO 17633:2010(E)
Table 1B-1 (continued)
a, b
Alloy
Chemical composition, % (by mass)
designation
Shielding
according
gas
C Mn Si P S Cr Ni Mo Cu N Others
to alloy Nb + Ta
type
(see 4.4)
C1, M12,
410 0,12 1,2 1,0 0,04 0,03 11,0 to 13,5 0,6 0,75 — 0,75 — —
M21, Z
C1, M12,
410NiMo 0,06 1,0 1,0 0,04 0,03 11,0 to 12,5 4,0 to 5,0 0,4 to 0,7 — 0,75 — —
M21, Z
C1, M12,
430 0,10 1,2 1,0 0,04 0,03 15,0 to 18,0 0,6 0,75 — 0,75 — —
M21, Z
C1, M12,
430Nb 0,10 1,2 1,0 0,04 0,03 15,0 to 18,0 0,6 0,75 0,5 to 1,5 0,75 — —
M21, Z
C1, M12,
Cr + Mo:
16-8-2 0,10 0,5 to 2,5 0,75 0,04 0,03 14,5 to 17,5 7,5 to 9,5 1,0 to 2,0 — 0,75 —
M21, Z 18,5
C1, M12, 0,08
2209 0,04 0,5 to 2,0 1,0 0,04 0,03 21,0 to 24,0 7,5 to 10,0 2,5 to 4,0 — 0,75 —
M21, Z to 0,20
C1, M12, 0,10
2553 0,04 0,5 to 1,5 0,75 0,04 0,03 24,0 to 27,0 8,5 to 10,5 2,9 to 3,9 — 1,5 to 2,5 —
M21, Z to 0,25
C1, M12, 0,20
2594 0,04 0,5 to 2,5 1,0 0,04 0,03 24,0 to 27,0 8,0 to 10,5 2,5 to 4,5 — 1,5 W: 1,0
M21, Z to 0,30
C1, M12,
c
Z Any other agreed composition
M21, Z
a
Single values are maximum values.
b
“No requirement for analysis” is indicated by a dash.
c
Consumables for which the chemical composition is not listed shall be symbolized similarly and prefixed by the letter Z. The chemical composition ranges are not specified and it is possible
that two electrodes with the same Z classification are not interchangeable.

ISO 17633:2010(E)
10 © ISO 2010 – All rights reserved
Table 1B-2 — Symbols and all-weld metal chemical composition requirements of non-gas shielded flux cored electrodes
(classification according to alloy type)
a, b
Alloy Chemical composition, % (by mass)
designation
Shielding
according
gas
C Mn Si P S Cr Ni Mo Cu N Others
to alloy Nb + Ta
type
(see 4.4)
3,30 to
307 NO 0,13 1,0 0,04 0,03 19,5 to 22,0 9,0 to 10,5 0,5 to 1,5 — 0,75 — —
4,75
308 NO 0,08 0,5 to 2,5 1,0 0,04 0,03 19,5 to 22,0 9,0 to 11,0 0,75 — 0,75 — —
308L NO 0,04 0,5 to 2,5 1,0 0,04 0,03 19,5 to 22,0 9,0 to 12,0 0,75 — 0,75 — —
308H NO 0,04 to 0,08 0,5 to 2,5 1,0 0,04 0,03 19,5 to 22,0 9,0 to 11,0 0,75 — 0,75 — —
308Mo NO 0,08 0,5 to 2,5 1,0 0,04 0,03 18,0 to 21,0 9,0 to 11,0 2,0 to 3,0 — 0,75 — —
308LMo NO 0,04 0,5 to 2,5 1,0 0,04 0,03 18,0 to 21,0 9,0 to 12,0 2,0 to 3,0 — 0,75 — —
1,25 to 0,25 to
308HMo NO 0,07 to 0,12 0,04 0,03 19,0 to 21,5 9,0 to 10,7 1,8 to 2,4 — 0,75 — —
2,25 0,80
309 NO 0,10 0,5 to 2,5 1,0 0,04 0,03 23,0 to 25,5 12,0 to 14,0 0,75 — 0,75 — —
309L NO 0,04 0,5 to 2,5 1,0 0,04 0,03 23,0 to 25,5 12,0 to 14,0 0,75 — 0,75 — —
309Mo NO 0,12 0,5 to 2,5 1,0 0,04 0,03 21,0 to 25,0 12,0 to 16,0 2,0 to 3,0 — 0,75 — —
309LMo NO 0,04 0,5 to 2,5 1,0 0,04 0,03 21,0 to 25,0 12,0 to 16,0 2,0 to 3,0 — 0,75 — —
309LNb NO 0,04 0,5 to 2,5 1,0 0,04 0,03 23,0 to 25,5 12,0 to 14,0 0,75 0,7 to 1,0 0,75 — —
310 NO 0,20 1,0 to 2,5 1,0 0,03 0,03 25,0 to 28,0 20,0 to 22,5 0,75 — 0,75 — —
312 NO 0,15 0,5 to 2,5 1,0 0,04 0,03 28,0 to 32,0 8,0 to 10,5 0,75 — 0,75 — —
316 NO 0,08 0,5 to 2,5 1,0 0,04 0,03 18,0 to 20,5 11,0 to 14,0 2,0 to 3,0 — 0,75 — —
316L NO 0,04 0,5 to 2,5 1,0 0,04 0,03 18,0 to 20,5 11,0 to 14,0 2,0 to 3,0 — 0,75 — —
316H NO 0,04 to 0,08 0,5 to 2,5 1,0 0,04 0,03 18,0 to 20,5 11,0 to 14,0 2,0 to 3,0 — 0,75 — —
316LCu NO 0,03 0,5 to 2,5 1,0 0,04 0,03 18,0 to 20,5 11,0 to 16,0 1,25 to 2,75 — 1,0 to 2,5 — —
317 NO 0,08 0,5 to 2,5 1,0 0,04 0,03 18,5 to 21,0 13,0 to 15,0 3,0 to 4,0 — 0,75 — —
317L NO 0,04 0,5 to 2,5 1,0 0,04 0,03 18,5 to 21,0 13,0 to 15,0 3,0 to 4,0 — 0,75 — —

ISO 17633:2010(E)
Table 1B-2 (continued)
a, b
Alloy Chemical composition, % (by mass)
designation
Shielding
according
gas
C Mn Si P S Cr Ni Mo Nb + Ta Cu N Others
to alloy
type
(see 4.4)
8 × C to
318 NO 0,08 0,5 to 2,5 1,0 0,04 0,03 18,0 to 20,5 11,0 to 14,0 2,0 to 3,0 0,75 — —
1,0
8 × C to
347 NO 0,08 0,5 to 2,5 1,0 0,04 0,03 19,0 to 21,5 9,0 to 11,0 0,75 0,75 — —
1,0
8 × C to
347L NO 0,04 0,5 to 2,5 1,0 0,04 0,03 19,0 to 21,5 9,0 to 11,0 0,75 0,75 — —
1,0
Ti: 10 × C
409 NO 0,10 0,80 1,0 0,04 0,03 10,5 to 13,5 0,6 0,75 — 0,75 —
to 1,5
8 × C to
409Nb NO 0,12 1,0 1,0 0,04 0,03 10,5 to 14,0 0,6 0,75 0,75 — —
1,5
410 NO 0,12 1,0 1,0 0,04 0,03 11,0 to 13,5 0,6 0,75 — 0,75 — —
410NiMo NO 0,06 1,0 1,0 0,04 0,03 11,0 to 12,5 4,0 to 5,0 0,4 to 0,7 — 0,75 — —
430 NO 0,10 1,0 1,0 0,04 0,03 15,0 to 18,0 0,6 0,75 — 0,75 — —
430Nb NO 0,10 1,0 1,0 0,04 0,03 15,0 to 18,0 0,6 0,75 0,5 to 1,5 0,75 — —
Cr + Mo:
16-8-2 NO 0,10 0,5 to 2,5 0,75 0,04 0,03 14,5 to 17,5 7,5 to 9,5 1,0 to 2,0 — 0,75 —
18,5
2209 NO 0,04 0,5 to 2,0 1,0 0,04 0,03 21,0 to 24,0 7,5 to 10,0 2,5 to 4,0 — 0,75 0,08 to 0,20 —
2553 NO 0,04 0,5 to 1,5 0,75 0,04 0,03 24,0 to 27,0 8,5 to 10,5 2,9 to 3,9 — 1,5 to 2,5 0,10 to 0,20 —
2594 NO 0,04 0,5 to 2,5 1,0 0,04 0,03 24,0 to 27,0 8,0 to 10,5 2,5 to 4,5 — 1,5 0,20 to 0,30 W: 1,0
c
Z NO Any other agreed composition
a
Single values are maximum values.
b
“No requirement for analysis” is indicated by a dash.
c
Consumables for which the chemical composition is not listed shall be symbolized similarly and prefixed by the letter Z. The chemical composition ranges are not specified and it is possible
that two electrodes with the same Z classification are not interchangeable.

ISO 17633:2010(E)
12 © ISO 2010 – All rights reserved
Table 1B-3 — Symbols and all-weld metal chemical composition requirements of gas shielded metal cored electrodes
(classification according to alloy type)
a, b
Alloy
Chemical composition, % (by mass)
designation
Shielding
according
gas
to alloy C Mn Si P S Cr Ni Mo Nb + Ta Cu N Others
type
(see 4.4)
M12, M13,
308L 0,04 1,0 to 2,5 1,0 0,03 0,03 19,0 to 22,0 9,0 to 11,0 0,75 — 0,75 — —
M21, I1, Z
M12, M13,
308Mo 0,08 1,0 to 2,5 0,30 to 0,65 0,03 0,03 18,0 to 21,0 9,0 to 12,0 2,0 to 3,0 — 0,75 — —
M21, I1, Z
M12, M13,
309L 0,04 1,0 to 2,5 1,0 0,03 0,03 23,0 to 25,0 12,0 to 14,0 0,75 — 0,75 — —
M21, I1, Z
M12, M13,
309LMo 0,04 1,0 to 2,5 1,0 0,03 0,03 23,0 to 25,0 12,0 to 14,0 2,0 to 3,0 — 0,75 — —
M21, I1, Z
M12, M13,
316L 0,04 1,0 to 2,5 1,0 0,03 0,03 18,0 to 20,0 11,0 to 14,0 2,0 to 3,0 — 0,75 — —
M21, I1, Z
M12, M13,
347 0,08 1,0 to 2,5 0,30 to 0,65 0,04 0,03 19,0 to 21,5 9,0 to 11,0 0,75 10 × C to 1,0 0,75 — —
M21, I1, Z
M12, M13, Ti: 10 × C
409 0,08 0,8 0,8 0,03 0,03 10,5 to 13,5 0,6 0,75 — 0,75 —
M21, I1, Z to 1,5
M12, M13,
409Nb 0,12 1,2 1,0 0,04 0,03 10,5 to 13,5 0,6 0,75 8 × C to 1,5 0,75 — —
M21, I1, Z
M12, M13,
410 0,12 0,6 0,5 0,03 0,03 11,5 to 13,5 0,6 0,75 — 0,75 — —
M21, I1, Z
M12, M13,
410NiMo 0,06 1,0 1,0 0,03 0,03 11,0 to 12,5 4,0 to 5,0 0,4 to 0,7 — 0,75 — —
M21, I1, Z
M12, M13,
430 0,10 0,6 0,5 0,03 0,03 15,5 to 18,0 0,6 0,75 — 0,75 — —
M21, I1, Z
M12, M13,
430Nb 0,10 1,2 1,0 0,04 0,03 15,0 to 18,0 0,6 0,75 0,5 to 1,5 0,75 — —
M21, I1, Z
M12, M13,
c
Z Any other agreed composition
M21, I1, Z
a
Single values are maximum values.
b
“No requirement for analysis” is indicated by a dash.
c
Consumables for which the chemical composition is not listed shall be symbolized similarly and prefixed by the letter Z. The chemical composition ranges are not specified and it is possible
that two electrodes with the same Z classification are not interchangeable.

ISO 17633:2010(E)
Table 1B-4 — Symbols and all-weld metal chemical composition requirements of cored rods for gas tungsten arc welding
(classification according to alloy type)
a, b
Alloy Chemical composition, % (by mass)
designation
Shielding
according
gas
to alloy C Mn Si P S Cr Ni Mo Nb + Ta Cu N Others
type
(see 4.4)
308L I1, Z 0,03 0,5 to 2,5 1,2 0,04 0,03 18,0 to 21,0 9,0 to 11,0 0,5 — 0,5 — —
309L I1, Z 0,03 0,5 to 2,5 1,2 0,04 0,03 22,0 to 25,0 12,0 to 14,0 0,5 — 0,5 — —
316L I1, Z 0,03 0,5 to 2,5 1,2 0,04 0,03 17,0 to 20,0 11,0 to 14,0 2,0 to 3,0 — 0,5 — —
347 I1, Z 0,08 0,5 to 2,5 1,2 0,04 0,03 18,0 to 21,0 9,0 to 11,0 0,5 8 × C to 1,0 0,5 — —
c
I1, Z Any other agreed composition
Z
a
Single values are maximum values.
b
“No requirement for analysis” is indicated by a dash.
c
Consumables for which the chemical composition is not listed shall be symbolized similarly and prefixed by the letter Z. The chemical composition ranges are not specified and it is possible
that two electrodes with the same Z classification are not interchangeable.

ISO 17633:2010(E)
Table 2A — Tensile properties of all-weld metal (classification according to nominal composition)
Minimum proof Minimum tensile
Minimum Post-weld
Alloy designation strength strength
a
elongation heat treatment
according to
R R
p0,2 m
nominal composition
MPa MPa %
b
13 250 450 15
b
13 Ti 250 450 15
c
13 4 500 750 15
16 8 2 320 510 25 None
d
17 300 450 15
19 9 L 320 510 30
19 9 Nb 350 550 25
19 12 3 L 320 510 25
19 12 3 Nb 350 550 25
19 13 4 N L 350 550 25
19 9 H 350 550 30
22 9 3 N L 450 550 20
18 16 5 N L 300 480 25
18 8 Mn 350 500 25
18 9 Mn Mo 350 500 25
20 10 3 400 620 20
None
20 25 5 Cu N L 320 510 25
21 10 N 350 550 30
23 7 N L 450 570 20
23 12 L 320 510 25
23 12 Nb 350 550 25
23 12 2 L 350 550 25
29 9 450 650 15
22 12 H 350 550 25
25 20 350 550 20
25 4 450 650 15
25 9 4 Cu N L 550 620 18
25 9 4 N L 550 620 18
Z Not specified
a
Gauge length is equal to five times the test specimen diameter.
b
The weld test assembly (or the blank from it, from which the tensile test specimen is to be machined) shall be
heated to a temperature between 840 °C and 870 °C, held for 2 h, then furnace cooled to 600 °C, then cooled in air.
c
The weld test assembly (or the blank from it, from which the tensile test specimen is to be machined) shall be
heated to a temperature between 580 °C and 620 °C, held for 2 h, then cooled in air.
d
The weld test assembly (or the blank from it, from which the tensile test specimen is to be machined) shall be
heated to a temperature between 760 °C and 790 °C, held for 2 h, then furnace cooled to 600 °C, then cooled in air.

14 © ISO 2010 – All rights reserved

ISO 17633:2010(E)
Table 2B — Tensile properties of all-weld metal (classification according to alloy type)
Minimum
Alloy designation
Minimum tensile strength
a Post-weld
elongation
according to
heat treatment
alloy type
MPa %
307 590 25
308 550 25
308L 520 25
308H 550 25
308Mo 550 25
308LMo 520 25
308HMo 550 25
309 550 25
309L 520 25
309H 550 25
309Mo 550 15
309LMo 520 15
309LNiMo 520 15
None
309LNb 520 25
310 550 25
312 660 15
316 520 25
316L 485 25
316H 520 25
316LCu 485 25
317 550 20
317L 520 20
318 520 20
347 520 25
347L 520 25
347H 550 25
409 450 15
b
409Nb 450 15
b
410 520 15
c
410NiMo 760 10
d
430 450 15
d
430Nb 450 13
16-8-2 520 25
2209 690 15
None
2553 760 13
2594 760 13
Z Not specified
a
Gauge length is equal to five times the test specimen diameter.
b
The weld test assembly (or the blank from it, from which the tensile test specimen is to be machined) shall be heated to a
temperature between 730 °C and 760 °C, held for 1 h, then furnace cooled to 315 °C, then cooled in air.
c
The weld test assembly (or the blank from it, from which the tensile test specimen is to be machined) shall be heated to a
temperature between 590 °C and 620 °C, held for 1 h, then cooled in air.
d
The weld test assembly (or the blank from it, from which the tensile test specimen is to be machined) shall be heated to a
temperature between 760 °C and 790 °C, held for 2 h, then furnace cooled to 600 °C, then cooled in air.
ISO 17633:2010(E)
4.3 Symbol for type of electrode core
The symbols in Tables 3A and 3B indicate different types of tubular cored electrodes and rods relative to their
core composition and slag characteristics.
Table 3A — Symbol for type of electrode core Table 3B — Symbol for type of tubular cored
(classification according to nominal electrode and rod (classification according to
composition) alloy type)
Symbol Characteristics Symbol Characteristics
B Basic slag F Flux cored electrodes
R Rutile, slow freezing slag M Metal cored electrodes
P Rutile, fast freezing slag R Cored rods for gas tungsten arc welding
M Metal powder
See Annex C.
U Self-shielding
Z Other types
See Annex B.
4.4 Symbol for shielding gas
The symbols for shielding gases shall be in accordance with ISO 14175, except that the symbol NO shall be
used for non-gas shielded tubular cored electrodes.
4.5 Symbol for welding position
The symbols in Tables 4A and 4B indicate the welding positions for which the electrode is suitable in
accordance with ISO 15792-3. See Clause 7 for testing requirements.
Table 4A — Symbol for welding position Table 4B — Symbol for welding position
(classification according to nominal (classification according to alloy type)
composition)
Welding positions in accordance Welding positions in accordance
Symbol Symbol
a a
with ISO 6947:2010 with ISO 6947:2010
1 PA, PB, PC, PD, PE, PF and PG 0 PA and PB
2 PA, PB, PC, PD, PE and PF 1 PA, PB, PC, PD, PE, PF or PG, or PF and PG
a
3 PA and PB
PA = Flat position
4 PA
PB = Horizontal-vertical position
5 PA, PB and PG PC = Horizontal position
a
PD = Horizontal overhead position
PA = Flat position
PE = Overhead position
PB = Horizontal-vertical position
PF = Vertical up position
PC = Horizontal position
PG = Vertical down position
PD = Horizontal overhead position

PE = Overhead position
PF = Vertical up position
PG = Vertical down position
16 © ISO 2010 – All rights reserved

ISO 17633:2010(E)
5 Mechanical test
5A Classification according to nominal 5B Classification according to alloy type

composition
Tensile tests for tubular cored electrodes shall
Tensile tests and any required retests for tubular
be carried out on weld metal in the condition
cored electrodes shall be carried out on weld metal
specified in Table 2B (as-welded or post-weld heat
in the condition specified in Table 2A (as-welded
treated) using an all-weld metal test piece in
or post-
...