EN ISO 12732:2008

Corrosion of metals and alloys - Electrochemical potentiokinetic reactivation measurement using the double loop method (based on Cihal's method) (ISO 12732:2006)

ISO 12732:2006 specifies the method for measuring the degree of sensitization (DOS) in stainless steel and nickel-based alloys using the Double Loop Electrochemical Potentiokinetic Reactivation (DL-EPR) test (based on Cihal's method).
The method may be used for the quantitative assessment of deleterious thermal effects resulting in the formation of alloy-element-depleted zones at grain boundaries or in the matrix. However, attention should be paid when testing heat-affected weld zones, due to possible non-uniform distribution of sensitized zones along the fusion lines.
The results of the test can be used as an index to identify the potential susceptibility of stainless steel and nickel-based alloys to intergranular corrosion, pitting corrosion, and intergranular-stress corrosion cracking, but prediction of these corrosion modes depends on complementary specific testing.
ISO 12732:2006 describes the general methodology and gives examples of suitable test exposure conditions for specific alloys.

Korrosion von Metallen und Legierungen - Verfahren für die elektrochemische potentiodynamische Reaktivierungsmessung mit dem Double-loop-Verfahren (Čihal-Verfahren) (ISO 12732:2006)

Diese Internationale Norm legt das Verfahren zum Messen des Sensibilisierungsgrades (DOS) für nichtrostenden Stahl und Nickelbasislegierungen fest, indem eine elektrochemische potentiodynamische Reaktivierung nach dem Double Loop Verfahren (DL EPR Prüfung) angewendet wird (Čihal Verfahren).
Das Verfahren kann zur quantitativen Beurteilung ungünstiger thermischer Einflüsse angewendet werden, die zur Bildung von Zonen führen, in denen eine Abreichung (Konzentrationsverminderung) des Legierungs¬elements an Korngrenzen oder in der Matrix auftritt. Wärmeeinflusszonen von Schweißungen sollten jedoch wegen der möglichen ungleichmäßigen Verteilung der sensibilisierten Zonen entlang der Schmelzlinien besonders aufmerksam geprüft werden.
Die Ergebnisse der Prüfung können als Index zur Bestimmung der möglichen Anfälligkeit von nichtrostendem Stahl und Nickelbasislegierungen für interkristalline Korrosion, Lochkorrosion und interkristalline Spannungsrisskorrosion verwendet werden, wobei eine genauere Vorhersage für das Auftreten dieser Korrosionsarten jedoch weitere spezifische Prüfungen erfordert.
Diese Internationale Norm beschreibt die allgemeine Methodologie und gibt in Anhang C Beispiele für geeignete Beanspruchungsbedingungen für die Prüfung spezifischer Legierungen.

Corrosion des métaux et alliages - Mesurage de la réactivation électrochimique potentiocinétique par la méthode de la double boucle (dérivée de la méthode de Cihal) (ISO 12732:2006)

L'ISO 12732:2006 spécifie une méthode permettant de mesurer le degré de sensibilisation (DOS) des aciers inoxydables et des alliages à base de nickel par réalisation de l'essai de réactivation électrochimique potentiocinétique double boucle (DL-EPR) (dérivée de la méthode Cihal).
Cette méthode peut être employée pour évaluer quantitativement les effets thermiques néfastes qui génèrent des zones appauvries en éléments d'alliage au niveau des joints de grain ou dans la matrice. Il convient cependant de faire particulièrement attention lors des essais relatifs aux zones de soudure affectées par la chaleur en raison de la répartition non uniforme des zones sensibilisées le long des lignes de fusion.
Les résultats de l'essai peuvent aussi servir d'indice pour qualifier la tendance potentielle de l'acier inoxydable et des alliages à base de nickel à la corrosion intergranulaire, à la corrosion par piqûres, et à la fissuration par corrosion sous contrainte intergranulaire, mais la prédiction de ces modes de corrosion dépend d'essais spécifiques supplémentaires.
L'ISO 12732:2006 décrit la méthodologie générale et donne des exemples de conditions d'essai adaptées pour des alliages spécifiques.

Korozija kovin in zlitin - Merjenje elektrokemične potenciokinetične reaktivacije z uporabo metode z dvojno zanko (na osnovi Cihalove metode) (ISO 12732:2006)

General Information

• Status: Published
• Publication Date: 22-Apr-2008
• Withdrawal Date: 30-Oct-2008
• ICS: 77.060 - Corrosion of metals
• Technical Committee: CEN/TC 262 - Metallic and other inorganic coatings
• Drafting Committee: CEN/TC 262 - Metallic and other inorganic coatings
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 23-Apr-2008
• Completion Date: 23-Apr-2008
• Ref Project: SIST EN ISO 12732:2008 - Corrosion of metals and alloys - Electrochemical potentiokinetic reactivation measurement using the double loop method (based on Cihal's method) (ISO 12732:2006)

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 12732:2008
01-julij-2008
.RUR]LMDNRYLQLQ]OLWLQ0HUMHQMHHOHNWURNHPLþQHSRWHQFLRNLQHWLþQHUHDNWLYDFLMH]
XSRUDERPHWRGH]GYRMQR]DQNRQDRVQRYL&LKDORYHPHWRGH,62
Corrosion of metals and alloys - Electrochemical potentiokinetic reactivation
measurement using the double loop method (based on Cihal's method) (ISO
12732:2006)
Corrosion des métaux et alliages - Mesurage de la réactivation électrochimique
potentiocinétique par la méthode de la double boucle (dérivée de la méthode de Cihal)
(ISO 12732:2006)
Ta slovenski standard je istoveten z: EN ISO 12732:2008
ICS:
77.060 Korozija kovin Corrosion of metals
SIST EN ISO 12732:2008 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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EUROPEAN STANDARD
EN ISO 12732
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2008
ICS 77.060

English Version
Corrosion of metals and alloys - Electrochemical potentiokinetic
reactivation measurement using the double loop method (based
on Cihal's method) (ISO 12732:2006)
Corrosion des métaux et alliages - Mesurage de la Korrosion von Metallen und Legierungen - Verfahren für die
réactivation électrochimique potentiocinétique par la elektrochemische potentiodynamische
méthode de la double boucle (dérivée de la méthode de Reaktivierungsmessung mit dem Double-loop-Verfahren
Cihal) (ISO 12732:2006) (Cihal-Verfahren) (ISO 12732:2006)
This European Standard was approved by CEN on 21 March 2008.
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, 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: rue de Stassart, 36  B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 12732:2008: E
worldwide for CEN national Members.

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EN ISO 12732:2008 (E)
Contents Page
Foreword.3

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EN ISO 12732:2008 (E)
Foreword
The text of ISO 12732:2006 has been prepared by Technical Committee ISO/TC 156 “Corrosion of metals and
alloys” of the International Organization for Standardization (ISO) and has been taken over as EN ISO
12732:2008 by Technical Committee CEN/TC 262 “Metallic and other inorganic coatings” the secretariat of
which is held by BSI.
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 October 2008, and conflicting national standards shall be withdrawn at
the latest by October 2008.
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.
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, 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 12732:2006 has been approved by CEN as a EN ISO 12732:2008 without any modification.

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INTERNATIONAL ISO
STANDARD 12732
First edition
2006-09-15

Corrosion of metals and alloys —
Electrochemical potentiokinetic
reactivation measurement using the
double loop method (based on Čihal's
method)
Corrosion des métaux et alliages — Mesurage de la réactivation
électrochimique potentiocinétique par la méthode de la doub
...