EN ISO 8249:2018
(Main)Welding - Determination of Ferrite Number (FN) in austenitic and duplex ferritic-austenitic Cr-Ni stainless steel weld metals (ISO 8249:2018)
Welding - Determination of Ferrite Number (FN) in austenitic and duplex ferritic-austenitic Cr-Ni stainless steel weld metals (ISO 8249:2018)
This document specifies the method and apparatus for:
— the measurement of the delta ferrite content, expressed as Ferrite Number (FN), in largely austenitic and duplex ferritic-austenitic stainless steel[1] weld metal through the attractive force between a weld metal sample and a standard permanent magnet;
— the preparation and measurement of standard pads for manual metal arc covered electrodes. The general method is also recommended for the ferrite measurement of production welds and for weld metal from other processes, such as gas tungsten arc welding, gas shielded metal arc welding and submerged arc welding (in these cases, the way of producing the pad should be defined);
— the calibration of other instruments to measure FN.
The method laid down in this document is intended for use on weld metals in the as-welded state and on weld metals after thermal treatments causing complete or partial transformation of ferrite to any non-magnetic phase. Austenitizing thermal treatments which alter the size and shape of the ferrite change the magnetic response of the ferrite.
The method is not intended for measurement of the ferrite content of cast, forged or wrought austenitic or duplex ferritic-austenitic steel samples.
[1] The term "austenitic-ferritic (duplex) stainless steel" is sometimes applied in place of "duplex ferritic-austenitic stainless steel".
Schweißen - Bestimmung der Ferrit-Nummer (FN) in austenitischem und ferritisch-austenitischem (Duplex-)Schweißgut von Cr-Ni-Stählen (ISO 8249:2018)
Dieses Dokument legt das Verfahren und Geräte fest für:
— die Messung des Deltaferrit-Gehaltes, ausgedrückt als Ferritnummer (FN), in nichtrostendem, großenteils austenitischem und ferritisch austenitischem (Duplex )Schweißgut ) auf der Grundlage der Haftkraft zwischen einem Prüfstück aus Schweißgut und einem genormten Dauermagneten;
— die Herstellung und Prüfung von Schweißgutprüfstücken aus Stabelektroden. Das Verfahren wird auch empfohlen für die Messung des Deltaferrit-Gehaltes von Fertigungsschweißungen und von Schweißgut, das nach anderen Verfahren hergestellt wurde (z.B. WIG, MIG/MAG, UP – in diesen Fällen müssen die Parameter zur Herstellung der Schweißgutprobe angegeben werden);
— die Kalibrierung anderer Messgeräte zum Messen der FN.
Die in diesem Dokument festgelegte Verfahren ist vorgesehen für die Verwendung auf Schweißgut im geschweißten Zustand und auf Schweißgut nach Wärmebehandlung, die eine komplette oder teilweise Transformation von Deltaferrit in nichtmagnetische Phasen verursacht. Austenitisierende Wärmebehandlungen, bei denen die Größe und Form des Deltaferrits verändert wird, ändern auch die magnetische Reaktion des Deltaferrits.
Das Verfahren gilt nicht für die Bestimmung des Deltaferritgehaltes von Prüfstücken aus austenitischem oder ferritisch austenitischem (Duplex-)Stahl in gegossener oder gewalzter/geschmiedeter Form.
Soudage - Détermination de l'indice de ferrite (FN) dans le métal fondu en acier inoxydable austénitique et duplex ferritique-austénitique au chrome-nickel (ISO 8249:2018)
Le présent document spécifie l'appareillage et le mode opératoire pour:
— le mesurage de la teneur en ferrite delta, exprimé en Indice de Ferrite (FN), du métal fondu en acier inoxydable en grande partie austénitique et duplex ferritique-austénitique[1] par la force d'attraction entre un échantillon de métal fondu et un aimant permanent étalon;
— la préparation et le mesurage des dépôts obtenus à partir d'électrodes enrobées. La méthode générale est également recommandée pour le mesurage de l'Indice de Ferrite des soudures de production et du métal fondu obtenu par d'autres procédés, tels que le soudage TIG, MIG et sous flux (dans ces cas-là, il convient de définir la méthode d'exécution du dépôt);
— l'étalonnage d'autres instruments de mesurage de l'Indice de Ferrite.
Le présent document est applicable au mesurage de l'Indice de Ferrite du métal fondu à l'état brut de soudage. Elle est également applicable à du métal fondu ayant été soumis à des traitements thermiques provoquant la transformation complète ou partielle de la ferrite en n'importe quelle phase non magnétique. Les traitements thermiques d'austénisation modifiant la taille et la forme de la ferrite modifient également la réponse magnétique de la ferrite.
La méthode n'est pas destinée au mesurage de la teneur en ferrite d'échantillons en acier austénitique ou duplex ferritique-austénitique moulés, forgés ou corroyés.
[1] Le terme «acier inoxydable austénitique-ferritique (duplex)» est parfois utilisé à la place du terme «acier inoxydable duplex ferritique-austénitique».
Varjenje - Določanje feritnega števila (FN) v avstenitnih in dupleksnih feritno-avstenitnih Cr-Ni nerjavnih varih (ISO 8249:2018)
Ta dokument določa metodo in aparat za:
– meritev delta feritne vsebnosti, izražene kot feritno število (FN), v avstenitnih in dupleksnih feritno-avstenitnih krom-nikljevih nerjavnih varih na podlagi privlačne sile med vzorcem zvarne kovine in standardnim trajnim magnetom;
– pripravo in meritve standardnih ploščic za pokrite elektrode za ročno obločno varjenje. Splošna metoda je priporočena tudi za meritve ferita pri proizvodnih varih in za zvarne kovine iz drugih procesov, kot je varjenje TIG, obločno varjenje v zaščitnih plinih in obločno varjenje pod praškom (v teh primerih je treba določiti način proizvodnje ploščice);
– umerjanje drugih instrumentov za merjenje feritnega števila.
Metoda, določena v tem dokumentu, je namenjena za uporabo na zvarnih kovinah v varjenem stanju in na zvarnih kovinah po toplotni obdelavi, ki povzroči popolno ali delno pretvorbo ferita v katero koli nemagnetno fazo. Toplotne obdelave z avstenitizacijo, pri katerih se spremenita velikost in oblika ferita, vključujejo spremembo magnetnega odziva ferita.
Ta metoda ni namenjena za meritve vsebnosti ferita v litih, kovanih ali kovnih vzorcih avstenitnega ali dupleksno feritno-avstenitnega jekla.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2018
1DGRPHãþD
SIST EN ISO 8249:2001
9DUMHQMH'RORþDQMHIHULWQHJDãWHYLOD )1 YDYVWHQLWQLKLQGXSOHNVQLKIHULWQR
DYVWHQLWQLK&U1LQHUMDYQLKYDULK ,62
Welding - Determination of Ferrite Number (FN) in austenitic and duplex ferritic-austenitic
Cr-Ni stainless steel weld metals (ISO 8249:2018)
Schweißen - Bestimmung der Ferrit-Nummer (FN) in austenitischem und ferritisch-
austenitischem (Duplex-)Schweißgut von Cr-Ni-Stählen (ISO 8249:2018)
Soudage - Détermination de l'indice de ferrite (FN) dans le métal fondu en acier
inoxydable austénitique et duplex ferritique-austénitique au chrome-nickel (ISO
8249:2018)
Ta slovenski standard je istoveten z: EN ISO 8249:2018
ICS:
25.160.40 Varjeni spoji in vari Welded joints and welds
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 8249
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2018
EUROPÄISCHE NORM
ICS 25.160.40 Supersedes EN ISO 8249:2000
English Version
Welding - Determination of Ferrite Number (FN) in
austenitic and duplex ferritic-austenitic Cr-Ni stainless
steel weld metals (ISO 8249:2018)
Soudage - Détermination de l'indice de ferrite (FN) Schweißen - Bestimmung der Ferrit-Nummer (FN) in
dans le métal fondu en acier inoxydable austénitique et austenitischem und ferritisch-austenitischem (Duplex-
duplex ferritique-austénitique au chrome-nickel (ISO )Schweißgut von Cr-Ni-Stählen (ISO 8249:2018)
8249:2018)
This European Standard was approved by CEN on 8 September 2018.
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, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 8249:2018 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 8249:2018) has been prepared by Technical Committee ISO/TC IIW
"International Institute of Welding" 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 March 2019, and conflicting national standards shall
be withdrawn at the latest by March 2019.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 8249:2000.
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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 8249:2018 has been approved by CEN as EN ISO 8249:2018 without any modification.
INTERNATIONAL ISO
STANDARD 8249
Third edition
2018-07
Welding — Determination of Ferrite
Number (FN) in austenitic and duplex
ferritic-austenitic Cr-Ni stainless steel
weld metals
Soudage — Détermination de l'indice de ferrite (FN) dans le
métal fondu en acier inoxydable austénitique et duplex ferritique-
austénitique au chrome-nickel
Reference number
ISO 8249:2018(E)
©
ISO 2018
ISO 8249:2018(E)
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland
ii © ISO 2018 – All rights reserved
ISO 8249:2018(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Calibration . 2
5.1 Coating thickness standards . 2
5.2 Magnet . 2
5.3 Instruments . 2
5.4 Calibration curve . 3
6 Standard method for covered electrode test pads . 5
6.1 Dimensions of weld metal test specimens . 5
6.2 Depositing weld metal test specimens . 5
6.3 Measuring . 6
6.3.1 Surface finishing . 6
6.3.2 Individual measurements . 6
6.3.3 Reporting . 7
7 Standard methods for test pads of other processes and for production welds .7
7.1 Standard method for test pads for other weld metals . 7
7.2 Production welds . 7
8 Other methods . 7
8.1 Methods . 7
8.2 Maintaining calibration . 8
9 Procedures used to prepare secondary standards for delta ferrite in austenitic
stainless steel weld metal . 8
Annex A (informative) Manufacture of secondary standards by strip cladding .9
Annex B (informative) Manufacture of secondary standards by centrifugal chill casting .19
Bibliography .27
ISO 8249:2018(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
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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).
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This document was prepared by IIW, the International Institute of Welding, Commission II.
Any feedback, question or request for official interpretation related to any aspect of this document
should be directed to IIW via your national standards body. A complete listing of these bodies can be
found at www .iso .org/members .html.
This third edition cancels and replaces the second edition (ISO 8249:2000), which has been technically
revised. The main changes compared to the previous edition are as follows:
— corrections have been made to Table 2 (previously Table 1);
— minor editorial changes in Clause 9 (previously Clause 8) and throughout the document have
been made.
iv © ISO 2018 – All rights reserved
ISO 8249:2018(E)
Introduction
At present, there is no universal opinion concerning the best experimental method that gives an absolute
measu
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