SIST EN ISO 1071:2016
(Main)Welding consumables - Covered electrodes, wires, rods and tubular cored electrodes for fusion welding of cast iron - Classification (ISO 1071:2015)
Welding consumables - Covered electrodes, wires, rods and tubular cored electrodes for fusion welding of cast iron - Classification (ISO 1071:2015)
This International Standard specifies requirements for classification of covered electrodes for manual
metal arc welding, wire electrodes for metal arc welding, tubular cored electrodes for metal arc welding
with and without a gas shield, rods for TIG-welding, and rods for oxy-fuel gas welding of unalloyed cast
irons. Classification is based on the chemical composition of wires and rods and on the all-weld metal
deposit for tubular cored and covered electrodes.
Schweißzusätze - Umhüllte Stabelektroden, Drähte, Stäbe und Fülldrahtelektroden zum Schmelzschweißen von Gusseisen - Einteilung (ISO 1071:2015)
Diese Internationale Norm legt Anforderungen für die Einteilung von umhüllten Stabelektroden zum Lichtbogenhandschweißen, von Drahtelektroden zum Metall-Lichtbogenschweißen, von Fülldrahtelektroden zum Metall-Lichtbogenschweißen mit und ohne Schutzgas, von Stäben zum Wolfram-Inertgasschweißen und von Stäben zum Gasschmelzschweißen unlegierter Gusseisenwerkstoffe fest. Die Einteilung erfolgt entsprechend der chemischen Zusammensetzung der Drahtelektroden und Stäbe sowie des reinen Schweißgutes von umhüllten Stab-elektroden und Fülldrahtelektroden.
Produits consommables pour le soudage - Electrodes enrobées, fils d'apport, baguettes et fils fourrés pour le soudage par fusion de la fonte - Classification (ISO 1071:2015)
ISO 1071:2015 spécifie les exigences pour la classification des électrodes enrobées utilisées en soudage manuel à l'arc avec électrode enrobée, des fils-électrodes utilisés en soudage à l'arc avec électrode fusible, des fils fourrés utilisés en soudage à l'arc avec électrode fusible (avec et sans gaz de protection), des baguettes utilisées pour le soudage TIG et des baguettes utilisées pour le soudage oxygaz des fontes non alliées. La classification est basée sur la composition chimique des fils et des baguettes et sur le dépôt de métal fondu hors dilution dans le cas des fils fourrés et des électrodes enrobées.
Dodajni materiali za varjenje - Oplaščene elektrode, žice, palice in cevne strženske elektrode za talilno varjenje litega železa - Razvrstitev (ISO 1071:2015)
Ta mednarodni standard določa zahteve za razvrstitev oplaščenih elektrod za ročno obločno varjenje, žičnih elektrod za obločno varjenje, cevnih strženskih elektrod za obločno varjenje s plinsko zaščito in brez nje, palic za varjenje TIG in palic za plamensko varjenje s kisikom (nelegirane železove litine). Razvrstitev temelji na kemični sestavi žic in palic ter čistih varov za cevne strženske in oplaščene elektrode.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 1071:2016
01-marec-2016
1DGRPHãþD
SIST EN ISO 1071:2004
'RGDMQLPDWHULDOL]DYDUMHQMH2SODãþHQHHOHNWURGHåLFHSDOLFHLQFHYQHVWUåHQVNH
HOHNWURGH]DWDOLOQRYDUMHQMHOLWHJDåHOH]D5D]YUVWLWHY ,62
Welding consumables - Covered electrodes, wires, rods and tubular cored electrodes for
fusion welding of cast iron - Classification (ISO 1071:2015)
Schweißzusätze - Umhüllte Stabelektroden, Drähte, Stäbe und Fülldrahtelektroden zum
Schmelzschweißen von Gusseisen - Einteilung (ISO 1071:2015)
Produits consommables pour le soudage - Electrodes enrobées, fils d'apport, baguettes
et fils fourrés pour le soudage par fusion de la fonte - Classification (ISO 1071:2015)
Ta slovenski standard je istoveten z: EN ISO 1071:2015
ICS:
25.160.20 Potrošni material pri varjenju Welding consumables
77.140.80 Železni in jekleni ulitki Iron and steel castings
SIST EN ISO 1071:2016 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 1071:2016
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SIST EN ISO 1071:2016
EN ISO 1071
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2015
EUROPÄISCHE NORM
ICS 25.160.20 Supersedes EN ISO 1071:2003
English Version
Welding consumables - Covered electrodes, wires, rods
and tubular cored electrodes for fusion welding of cast
iron - Classification (ISO 1071:2015)
Produits consommables pour le soudage - Electrodes Schweißzusätze - Umhüllte Stabelektroden, Drähte,
enrobées, fils d'apport, baguettes et fils fourrés pour le Stäbe und Fülldrahtelektroden zum Schmelzschweißen
soudage par fusion de la fonte - Classification (ISO von Gusseisen - Einteilung (ISO 1071:2015)
1071:2015)
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 1071:2015 E
worldwide for CEN national Members.
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SIST EN ISO 1071:2016
EN ISO 1071:2015 (E)
Contents Page
European foreword . 3
2
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SIST EN ISO 1071:2016
EN ISO 1071:2015 (E)
European foreword
This document (EN ISO 1071:2015) 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 1071:2003.
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 1071:2015 has been approved by CEN as EN ISO 1071:2015 without any modification.
3
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SIST EN ISO 1071:2016
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SIST EN ISO 1071:2016
INTERNATIONAL ISO
STANDARD 1071
Third edition
2015-11-15
Welding consumables — Covered
electrodes, wires, rods and tubular
cored electrodes for fusion welding of
cast iron — Classification
Produits consommables pour le soudage — Electrodes enrobées, fils
d’apport, baguettes et fils fourrés pour le soudage par fusion de la
fonte — Classification
Reference number
ISO 1071:2015(E)
©
ISO 2015
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SIST EN ISO 1071:2016
ISO 1071:2015(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
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Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2015 – All rights reserved
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SIST EN ISO 1071:2016
ISO 1071:2015(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Classification . 1
3.1 Wire electrodes and rods . 1
3.2 Tubular cored electrodes . 1
3.3 Covered electrodes . 2
3.4 Tubular cored and covered electrodes . 2
4 Symbols and requirements . 2
4.1 Symbols for the product form . 2
4.2 Symbol for the type of alloy . 2
4.3 Symbol for the chemical composition . 2
4.3.1 General. 2
4.3.2 Consumables producing similar weld metal . 2
4.3.3 Consumables producing dissimilar weld metal . 3
4.4 Symbol for shielding gas (tubular cored electrode) . 3
4.5 Symbols for effective electrode efficiency and type of current (covered electrode) . 7
5 Mechanical tests . 7
6 Chemical analysis . 7
7 Rounding procedure . 7
8 Retests . 8
9 Technical delivery conditions . 8
10 Designation . 8
Annex A (informative) Description of the consumable .10
Annex B (informative) Expected minimum values for strength and elongation of dissimilar
all-weld metal in tensile test .14
Bibliography .15
© ISO 2015 – All rights reserved iii
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SIST EN ISO 1071:2016
ISO 1071:2015(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 third edition cancels and replaces the second edition (ISO 1071:2003), which has been
technically revised.
iv © ISO 2015 – All rights reserved
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SIST EN ISO 1071:2016
ISO 1071:2015(E)
Introduction
This International Standard classifies welding consumables for fusion welding of various types of
unalloyed cast irons.
Applications for welding consumables classified to this International Standard:
— production welding, that means welding of cast materials during the process of production. In that
way, the quality of the casting shall be ensured in accordance with the guaranteed properties and
to the requirements of the application;
— repair welding of castings which are damaged during service;
— welding for construction purposes where cast irons are joined to themselves or to other ferrous or
non-ferrous metals.
The following methods are used for the welding of cast irons:
— using a welding consumable which produces a weld metal similar to the parent metal. High
preheating is required (typical temperature range 550 °C to 650 °C);
— using a welding consumable which produces a weld metal dissimilar to the parent metal. No or only
low preheating is required.
This International Standard contains different types of welding consumables because the chemical
composition of welding rods and wire electrodes, as well as the all-weld metal of the corresponding
covered electrodes and tubular cored electrodes, is similar.
Additionally, to the welding consumables specified in this International Standard, consumables
classified to other standards can be used (see Annex A).
© ISO 2015 – All rights reserved v
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SIST EN ISO 1071:2016
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SIST EN ISO 1071:2016
INTERNATIONAL STANDARD ISO 1071:2015(E)
Welding consumables — Covered electrodes, wires, rods
and tubular cored electrodes for fusion welding of cast
iron — Classification
1 Scope
This International Standard specifies requirements for classification of covered electrodes for manual
metal arc welding, wire electrodes for metal arc welding, tubular cored electrodes for metal arc welding
with and without a gas shield, rods for TIG-welding, and rods for oxy-fuel gas welding of unalloyed cast
irons. Classification is based on the chemical composition of wires and rods and on the all-weld metal
deposit for tubular cored and covered electrodes.
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 2401, Covered electrodes — Determination of the efficiency, metal recovery and deposition coefficient
ISO 6847, Welding consumables — Deposition of a weld metal pad for chemical analysis
ISO 14175, Welding consumables — Gases and gas mixtures for fusion welding and allied processes
ISO 80000-1:2009, Quantities and units — Part 1: General. Corrected by ISO 80000-1:2009/Cor 1:2011
3 Classification
3.1 Wire electrodes and rods
For wire electrodes and rods classified in accordance with their chemical composition (see Table 2 and
Table 3), the classification is divided into three parts.
a) The first part gives a symbol indicating the product to be identified.
b) The second part indicates the type of alloy (C for cast iron).
c) The third part gives a symbol indicating the chemical composition of the wire electrode or of the rod.
3.2 Tubular cored electrodes
For tubular cored electrodes classified in accordance with the all-weld metal chemical composition
produced with an appropriate shielding gas, the classification is divided into four parts.
a) The first part gives a symbol indicating the product to be identified.
b) The second part indicates the type of alloy (C for cast iron).
c) The third part gives a symbol indicating the chemical composition of the all-weld metal.
d) The fourth part gives a symbol indicating the shielding gas.
© ISO 2015 – All rights reserved 1
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SIST EN ISO 1071:2016
ISO 1071:2015(E)
3.3 Covered electrodes
For covered electrodes classified in accordance with the all-weld metal chemical composition, the
classification is based on an electrode diameter of 4 mm. The classification is divided into four parts.
a) The first part gives a symbol indicating the product to be identified.
b) The second part indicates the type of alloy (C for cast iron).
c) The third part gives a symbol indicating the chemical composition of the all-weld metal.
d) The fourth part gives a symbol indicating the effective electrode efficiency and the type of current.
3.4 Tubular cored and covered electrodes
The following classification of tubular cored and covered electrodes is split into two sections.
a) Compulsory section b) Optional section
This section includes the symbol for the type of This section includes the symbol for the effective
product, type of alloy, the chemical composition, electrode efficiency and/or type of current for
and the shielding gas as defined in 4.1, 4.2, 4.3, which the consumable is suitable as defined in
and 4.4. 4.5.
The full designation (see examples in Clause 10) shall be used on packages and in the manufacturer’s
literature and data sheets.
4 Symbols and requirements
4.1 Symbols for the product form
The symbol for the covered electrode shall be the letter E.
The symbol for the solid wire and rod shall be the letter S and the symbol for the tubular cored
wire shall be T.
The symbol for the cast rod shall be R.
4.2 Symbol for the type of alloy
The symbol C as the second symbol shall be used to indicate the welding of cast iron as the main application.
4.3 Symbol for the chemical composition
4.3.1 General
The symbols in Table 2 and Table 3 indicate the chemical composition of rods and wire electrodes,
as well as the chemical composition of the all-weld metal of covered electrodes and tubular cored
electrodes in accordance with Clause 6.
A distinction has to be made between consumables producing similar and dissimilar weld metal.
4.3.2 Consumables producing similar weld metal
The consumables in this group are classified in accordance with the alloy type in Table 1. The symbols
in Table 2 indicate the chemical composition of similar rods and similar all-weld metal of covered
electrodes and tubular cored electrodes. The description of each consumable and examples for their
application are given in Annex A.
2 © ISO 2015 – All rights reserved
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SIST EN ISO 1071:2016
ISO 1071:2015(E)
Table 1 — Welding consumables producing weld metal similar to parent metal
a
Symbol Microstructure Product form
b
FeC-1 lamellar graphite E, R
c
FeC-2 lamellar graphite E, T
FeC-3 lamellar graphite E, T
FeC-4 lamellar graphite R
FeC-5 lamellar graphite R
FeC-GF ferritic microstructure, spheroidal graphite E, T
FeC-GP1 pearlitic microstructure, spheroidal graphite R
FeC-GP2 pearlitic microstructure, spheroidal graphite E, T
a
See 4.1.
b
Covered electrode with core rod of cast iron.
c
Covered electrode with core rod of unalloyed steel.
4.3.3 Consumables producing dissimilar weld metal
The consumables in this group are classified in accordance with the chemical composition of the wire
electrode or of the all-weld metal of the covered electrode and of the tubular cored electrode (see
Table 3). The description of each consumable and examples for their application are given in Annex A.
4.4 Symbol for shielding gas (tubular cored electrode)
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.
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SIST EN ISO 1071:2016
ISO 1071:2015(E)
4 © ISO 2015 – All rights reserved
Table 2 — Chemical composition of similar rods and of similar all-weld metal of covered electrodes and tubular cored electrodes
a, b
Symbol Product Chemical composition %
form
c d
C Si Mn P S Fe Ni Cu Remark Sum of
other
elements
FeC-1 E, R 3,0 to 3,6 2,0 to 3,5 0,8 0,5 0,1 Remainder – – Al: 3,0 1,0
FeC-2 E, T 3,0 to 3,6 2,0 to 3,5 0,8 0,5 0,1 Remainder – – Al: 3,0 1,0
FeC-3 E, T 2,5 to 5,0 2,5 to 9,5 1,0 0,20 0,04 Remainder – – – 1,0
0,60 to 0,50 to
FeC-4 R 3,2 to 3,5 2,7 to 3,0 0,10 Remainder – – – 1,0
0,75 0,75
0,50 to 0,20 to Mo: 0,25 to
FeC-5 R 3,2 to 3,5 2,0 to 2,5 0,10 Remainder 1,2 to 1,6 – 1,0
0,70 0,40 0,45
Mg: 0,02 to
FeC-GF E, T 3,0 to 4,0 2,0 to 3,7 0,6 0,05 0,015 Remainder 1,5 – 0,10 1,0
Ce: 0,20
Mg: 0,04 to
FeC-GP1 R 3,2 to 4,0 3,2 to 3,8 0,10 to 0,40 0,05 0,015 Remainder 0,50 – 0,10 1,0
Ce: 0,20
Mg: 0,02 to
FeC-GP2 E, T 2,5 to 3,5 1,5 to 3,0 1,0 0,05 0,015 Remainder 2,5 1,0 0,10 1,0
Ce: 0,20
e
Z R, E, or T Any other agreed composition
a
Single values are maximum values.
b
The weld metal or filler metal as specified should be analysed for specific elements for which values are shown in this table. If the presence of other elements is indicated
in the course of this work, the amount of those elements shall be determined to ensure that their total does not exceed the limit specified for “sum of other elements” in the last
column of the table.
c
Nickel limit can include incidental cobalt.
d
Copper limit can include incidental silver.
e
Consumables for which the chemical composition is not listed in this table shall be symbolized indicating the chemical composition and prefixed by the letter Z. The chemical
composition ranges are not specified and therefore, it is possible that two electrodes with the same Z classification might not be interchangeable.
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SIST EN ISO 1071:2016
ISO 1071:2015(E)
© ISO 2015 – All rights reserved 5
Table 3 — Chemical composition of dissimilar rods, wire electrodes, and of dissimilar all-weld metal of covered electrodes and of tubular
cored electrodes
a, b, c
Symbol Product form Chemical composition in % (by mass)
d e
C Si Mn P S Fe Ni Cu Remark Sum of other
elements
Fe-1 E, S, T 2,0 1,5 0,5 to 1,5 0,04 0,04 Remainder — — — 1,0
St E, S, T 2,0 1,0 1,0 0,04 0,04 Remainder — 0,35 — 1,0
Fe-2 E, T 0,2 1,5 0,3 to 1,5 0,04 0,04 Remainder — — Nb + V: 5,0 to 10,0 1,0
E 2,0 4,0 2,5 — 0,03 8,0 min 85 2,5 Al: 1,0 1,0
Ni-CI
S 1,0 0,75 2,5 — 0,03 4,0 min 90 4,0 — 1,0
Ni-CI-A E 2,0 4,0 2,5 — 0,03 8,0 min 85 2,5 Al: 1,0 to 3,0 1,0
NiFe-1 E, S, T 2,0 4,0 2,5 0,03 0,03 Remainder 45 to 75 4,0 Al: 1,0 1,0
Al: 1,0
NiFe-2 E, S, T 2,0 4,0 1,0 to 5,0 0,03 0,03 Remainder 45 to 60 2,5 Carbide producing 1,0
elements: 3,0
NiFe-Cl E 2,0 4,0 2,5 — 0,03 Remainder 45 to 60 2,5 Al: 1,0 1,0
NiFeT3-CI T 2,0 1,0 3,0 to 5,0 — 0,03 Remainder 45 to 60 2,5 Al: 1,0 1,0
NiFe-CI-A E 2,0 4,0 2,5 — 0,03 Remainder 45 to 60 2,5 Al: 1,0 to 3,0 1,0
E 2,0 1,0 10 to 14 — 0,03 Remainder 35 to 45 2,5 Al: 1,0 1,0
NiFeMn-CI
S 0,50 1,0 10 to 14 — 0,03 Remainder 35 to 45 2,5 Al: 1,0 1,0
NiCu E, S 1,7 1,0 2,5 — 0,04 5,0 50 to 75 Remainder — 1,0
NiCu-A E, S 0,35 to 0,55 0,75 2,3 — 0,025 3,0 to 6,0 50 to 60 35 to 45 — 1,0
NiCu-B E, S 0,35 to 0,55 0,75 2,3 — 0,025 3,0 to 6,0 60 to 70 25 to 35 — 1,0
a
Single values are maximum percentages, unless otherwise noted.
b
The weld metal or filler metal as specified shall be analysed for specific elements for which values are shown in this table. If the presence of other elements is indicated in the
course of this work, the amount of those elements shall be determined to ensure that their total does not exceed the limit specified for “sum of other elements” in the last column of
the table.
c
Certain bronze filler metals are not included in this table, but can be used to braze weld cast iron very effectively. Colour match will not be the same as cast iron
d
Nickel limit can include incidental cobalt.
e
Copper limit can include incidental silver.
f
Consumables for which the chemical composition is not listed in this table shall be symbolized indicating the chemical composition and prefixed by the letter Z. The chemical
composition ranges are not specified and therefore, it is possible that two electrodes with the same Z classification might not be interchangeable.
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SIST EN ISO 1071:2016
ISO 1071:2015(E)
6 © ISO 2015 – All rights reserved
Table 3 (continued)
a, b, c
Symbol Product form Chemical composition in % (by mass)
d e
C Si Mn P S Fe Ni Cu Remark Sum of other
elements
f
Z E, S, T Any other agreed composition
a
Single values are maximum percentages, unless otherwise noted.
b
The weld metal or filler metal as specified shall be analysed for specific elements for which values are shown in this table. If the presence of other elements is indicated in the
course of this work, the amount of those elements shall be determined to ensure that their total does not exceed the limit specified for “sum of other elements” in the last column of
the table.
c
Certain bronze filler metals are not included in this table, but can be used to braze weld cast iron very effectively. Colour match will not be the same as cast iron
d
Nickel limit can include incidental cobalt.
e
Copper limit can include incidental silver.
f
Consumables for which the chemical composition is not listed in this table shall be symbolized indicating the chemical composition and prefixed by the letter Z. The chemical
composition ranges are not specified and therefore, it is possible that two electrodes with the same Z classification might not be interchangeable.
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SIST EN ISO 1071:2016
ISO 1071:2015(E)
4.5 Symbols for effective electrode efficiency and type of current (covered electrode)
The symbol in Table 4 indicates the effective electrode efficiency in accordance with ISO 2401 and the
type of current.
Table 4 — Symbol for effective electrode efficiency and type of current
a
Symbol Effective electrode Type of current
efficiency %
1 ≤105 a.c. and d.c.
2 ≤105 d.c.
3 >105 ≤ 125 a.c. and d.c.
4 >105 ≤ 125 d.c.
5 >125 ≤ 160 a.c. and d.c.
6 >125 ≤ 160 d.c.
7 >160 a.c. and d.c.
8 >160 d.c.
b
9 a.c. and d.c.
b
0 d.c.
a
In order to demonstrate operability on alternating current, tests shall be carried out
with no load voltage not higher than 65 V.
b
Not required.
5 Mechanical tests
The mechanical properties of the all-weld metal are not part of the classification.
NOTE 1 The mechanical properties and the microstructure of similar weld metal largely correspond with
those of the parent metal. They mainly depend on, for example, preheating, thermal conditions during welding,
and cooling rate. The indication of compulsory mechanical properties is not possible.
NOTE 2 The tensile test is used to describe the mechanical properties of the dissimilar all-weld metal. It is
performed with all-weld metal (as welded) in accordance with ISO 15792-1:2000/Amd:2011, type 1.3.
6 Chemical analysis
The chemical analysis of rod/wire electrodes shall be performed on samples of the product or the stock
from which it is made.
The chemical analysis of covered electrodes and tubular cored electrodes shall be performed on any
suitable all-weld metal test specimen. In case of dispute, the test specimen specified in ISO 6847
shall be used.
The test results shall meet the requirements of Table 2 or Table 3 for the classification under test.
Any analytical technique can be used, but in case of dispute, reference sh
...
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