EN ISO 1071:2003

SLOVENSKI STANDARD
01-junij-2004
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Welding consumables - Covered electrodes, wires, rods and tubular cored electrodes for
fusion welding of cast iron - Classification (ISO 1071:2003)
Schweißzusätze - Umhüllte Stabelektroden, Drähte, Stäbe und Fülldrahtelektroden zum
Schmelzschweißen von Gusseisen - Einteilung (ISO 1071:2003)
Produits consommables pour le soudage - Electrodes enrobées, fils d'apport, baguettes
et fils fourrés pour le soudage par fusion de la fonte - Classification (ISO 1071:2003)
Ta slovenski standard je istoveten z: EN ISO 1071:2003
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 1071
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2003
ICS 25.160.20
English version
Welding consumables - Covered electrodes, wires, rods and
tubular cored electrodes for fusion welding of cast iron -
Classification (ISO 1071:2003)
Produits consommables pour le soudage - Electrodes Schweißzusätze - Umhüllte Stabelektroden, Drähte, Stäbe
enrobées, fils d'apport, baguettes et fils fourrés pour le und Fülldrahtelektroden zum Schmelzschweißen von
soudage par fusion de la fonte - Classification (ISO Gusseisen - Einteilung (ISO 1071:2003)
1071:2003)
This European Standard was approved by CEN on 20 February 2003.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 1071:2003 E
worldwide for CEN national Members.

Contents
page
Foreword. 3
Introduction . 4
1 Scope. 5
2 Normative references . 5
3 Classification. 6
4 Symbols and requirements. 6
4.1 Symbols for the product form. 6
4.2 Symbol for the type of alloy. 7
4.3 Symbol for the chemical composition . 7
4.4 Symbol for shielding gas ( tubular cored electrode). 9
4.5 Symbols for effective electrode efficiency and type of current (covered electrode). 11
5 Mechanical tests. 11
6 Chemical analysis . 11
7 Retests . 11
8 Technical delivery conditions. 12
9 Designation. 12
Annex A (informative) Description of the consumable. 13
Annex B (informative) Expected minimum values for strength and elongation of dissimilar all-weld
metal in tensile test. 16
Annex ZA (informative) International Standards corresponding to the European Standards given in the
text . 17
Foreword
This document (EN ISO 1071:2003) has been prepared by Technical Committee CEN/TC 121 "Welding", the
secretariat of which is held by DS in collaboration with Technical Committee ISO/TC 44 "Welding and allied
processes".
Annexes A, B and ZA are informative.
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 January 2004, and conflicting national standards shall be withdrawn at the latest
by January 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, Czech Republic, Denmark, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,
Slovakia, Spain, Sweden, Switzerland and the United Kingdom.
Introduction
This European Standard classifies welding consumables for fusion welding of various types of unalloyed cast irons,
e.g.:
– grey cast irons with lamellar graphite according to EN 1561;
– malleable cast irons according to EN 1562;
– spheroidal graphite cast irons according to EN 1563;
– ductile iron pipes, fittings, accessories and their joints for water pipelines – Requirements and test methods
according to EN 545;
– ductile iron pipes, fittings, accessories and their joints for gas pipelines – Requirements and test methods
according to EN 969.
Applications for welding consumables classified to this 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 according to 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.
Two different 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 standard contains the 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 standard, consumables classified to other standards can be
used (see annex A).
1 Scope
This European 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 oxyfuel 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
This European Standard incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For
dated references, subsequent amendments to or revisions of any of these publications apply to this European
Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the
publication referred to applies (including amendments).
EN 439, Welding consumables - Shielding gases for arc welding and cutting.
EN 545, Ductile iron pipes, fittings, accessories and their joints for water pipelines - Requirements and test
methods.
EN 969, Ductile iron pipes, fittings accessories and their joints for gas pipelines - Requirements and test methods.
EN 1561, Founding - Grey cast irons.
EN 1562, Founding — Malleable cast irons.
EN 1563, Founding — Spheroidal graphite cast irons.
EN 1564, Founding — Austempered ductile cast irons.
EN 22401, Covered electrodes - Determination of the efficiency, metal recovery and deposition coefficient (ISO
2401:1972).
EN ISO 6847, Welding consumables - Deposition of a weld metal pad for chemical analysis (ISO 6847:2000).
prEN ISO 544, Welding consumables - Technical delivery conditions for welding filler metals - Type of product,
dimensions, tolerances and markings (ISO/FDIS 544:2000).
ISO 31-0:1992, Quantities and units - Part 0: General principles.
3 Classification
3.1 A wire electrode and a rod are classified according to chemical composition in Tables 2 and 3. The classification
is divided in 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 A tubular cored electrode is classified according to 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.
3.3 Covered electrodes are classified according to the all-weld metal chemical composition. The classification is
based on the electrode diameter 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
In order to facilitate the use of this standard, the classification of tubular cored and covered electrodes is split into
two sections:
a) compulsory section;
this section includes the symbols for the type of product, type of alloy, the chemical composition and the shielding
gas, i.e. the symbols defined in 4.1, 4.2, 4.3 and 4.4.
b) optional section;
this section includes the symbol for the effective electrode efficiency and type of current and the welding positions
for which the consumable is suitable, i.e. the symbols defined in 4.5.
The full designation (see clause 9) 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 Tables 2 and 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 similar and dissimilar consumable according to the chemical composition of the
weld metal.
4.3.2 Consumables producing similar weld metal
The consumables of this group are classified according to 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 application are given in annex A.
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-
...