EN ISO 9227:2012
(Main)Corrosion tests in artificial atmospheres - Salt spray tests (ISO 9227:2012)
Corrosion tests in artificial atmospheres - Salt spray tests (ISO 9227:2012)
MINOR REVISION
Korrosionsprüfungen in künstlichen Atmosphären - Salzsprühnebelprüfungen (ISO 9227:2012)
Diese Internationale Norm legt das Gerät, die Reagenzien und das anzuwendende Verfahren bei der Durchführung der neutralen Salzsprühnebelprüfung (NSS, neutral salt spray), der Essigsäure-Salzsprüh-nebelprüfung (AASS, acetic acid salt spray) und der kupferbeschleunigten Essigsäure-Salzsprühnebelprüfung (CASS, copper-accelerated acid salt spray) zum Beurteilen der Korrosionsbeständigkeit von metallischen Werkstoffen mit oder ohne ständigen Korrosionsschutz oder mit temporärem Korrosionsschutz fest.
Die Norm beschreibt auch das Verfahren, mit dem die Korrosivität in der Prüfkammer bewertet werden kann.
Die Norm legt nicht die Maße der Proben, die für ein bestimmtes Produkt anzuwendende Dauer der Beanspruchung oder die Interpretation der Ergebnisse fest. Solche Einzelheiten werden in den entsprechenden Produktspezifikationen angegeben.
Die Salzsprühnebelprüfungen sind besonders nützlich zum Nachweis von Schwachstellen, wie Poren und anderen Schäden, in bestimmten metallischen Überzügen und organischen Beschichtungen sowie anodischen Oxidschichten und Umwandlungsschichten.
Die neutrale Salzsprühnebelprüfung ist das Prüfverfahren, bei dem eine 5%ige Natriumchlorid-Lösung mit einem pH Wert von 6,5 bis 7,2 unter festgelegten Bedingungen versprüht wird. Sie gilt insbesondere für:
- Metalle und deren Legierungen,
- (anodisch oder kathodisch wirksame) Metallüberzüge,
- Umwandlungsschichten,
- anodische Oxidschichten und
- organische Beschichtungen auf metallischen Werkstoffen.
Die Essigsäure-Salzsprühnebelprüfung ist das Prüfverfahren, bei dem eine 5%ige Natriumchlorid-Lösung, der Eisessig zugesetzt wurde, mit einem pH Wert von 3,1 bis 3,3 unter festgelegten Bedingungen versprüht wird. Sie ist besonders nützlich zum Prüfen dekorativer Überzüge aus Kupfer + Nickel + Chrom oder Nickel + Chrom. Sie ist auch zum Prüfen anodischer Schichten auf Aluminium geeignet.
Die kupferbeschleunigte Essigsäure-Salzsprühnebelprüfung ist das Prüfverfahren, bei dem eine 5%ige Natriumchlorid-Lösung, der Kupferchlorid und Eisessig zugesetzt wurde, mit einem pH Wert von 3,1 bis 3,3 unter festgelegten Bedingungen versprüht wird. Sie ist nützlich zum Prüfen dekorativer Überzüge aus Kupfer + Nickel + Chrom oder Nickel + Chrom. Sie ist auch zum Prüfen anodischer Überzüge auf Aluminium geeignet.
Alle Salzsprühnebelverfahren sind geeignet zum vergleichenden Prüfen, ob die Qualität eines metallischen Werkstoffes, mit oder ohne Korrosionsschutz, beibehalten wird. Sie ist nicht als Vergleichsprüfung gedacht, um unterschiedliche Werkstoffe nach ihrer Korrosionsbeständigkeit einzustufen.
Essais de corrosion en atmosphères artificielles - Essais aux brouillards salins (ISO 9227:2012)
Korozijsko preskušanje v umetnih atmosferah - Korozijski preskusi v slani komori (ISO 9227:2012)
Ta mednarodni standard določa naprave, reagente in postopek za izvajanje korozijskih preskusov v nevtralni slani komori (NSS), slani komori z ocetno kislino (AASS) in slani komori z ocetno kislino, pospešeno z bakrom (CASS), za oceno korozijske odpornosti kovinskih materialov s trajno ali začasno protikorozijsko zaščito ali brez nje. Opisuje tudi metodo za vrednotenje korozivnosti v okolju preskusne komore. Ne določa dimenzij preskušancev, časa izpostavljenosti za določen izdelek ali razlage rezultatov. Te podrobnosti so navedene v ustreznih specifikacijah izdelkov. Korozijski preskusi v slani komori so še posebej uporabni za zaznavanje nepravilnosti, kot so pore in druge napake v določenih kovinskih, organskih, anodno oksidnih in reakcijskih prevlekah. Preskus v nevtralni slani komori je preskusna metoda, pri kateri se v nadzorovanem okolju razprši 5-odstotno raztopino natrijevega klorida, ki ima pH vrednost med 6,5 in 7,2. Uporablja se zlasti za: – kovine in njihove zlitine, – kovinske prevleke (anodne in katodne), – reakcijske prevleke, – anodno oksidne prevleke in – organske prevleke na kovinskih materialih. Preskus v slani komori z ocetno kislino je preskusna metoda, pri kateri se v nadzorovanem okolju razprši 5-odstotno raztopino natrijevega klorida z dodano ledocetno kislino, ki ima pH vrednost med 3,1 in 3,3. Posebno uporabna je za preskušanje dekorativnih prevlek z bakrom–nikljem–kromom ali kromnikljem. Ugotovljeno je bilo tudi, da je primerna za preskušanje anodnih prevlek na aluminiju. Preskus v slani komori z ocetno kislino, pospešeno z bakrom, je preskusna metoda, pri kateri se v nadzorovanem okolju razprši 5-odstotno raztopino natrijevega klorida z dodanim bakrovim kloridom in ledocetno kislino, ki ima pH vrednost med 3,1 in 3,3. Uporabna je za preskušanje dekorativnih prevlek z bakrom–nikljem–kromom ali kromnikljem. Ugotovljeno je bilo tudi, da je primerna za preskušanje anodnih prevlek na aluminiju. Vse metode preskušanja v slani komori so ustrezne za preverjanje vzdrževanja primerjalne kakovosti kovinskih materialov s protikorozijsko zaščito ali brez. Niso namenjene za uporabo pri primerjalnih preskusih kot sredstvo za razvrščanje različnih materialov glede na odpornost proti koroziji.
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2012
1DGRPHãþD
SIST EN ISO 9227:2006
SIST EN ISO 9227:2006
Korozijsko preskušanje v umetnih atmosferah - Korozijski preskusi v slani komori
(ISO 9227:2012)
Corrosion tests in artificial atmospheres - Salt spray tests (ISO 9227:2012)
Korrosionsprüfungen in künstlichen Atmosphären - Salzsprühnebelprüfungen (ISO
9227:2012)
Essais de corrosion en atmosphères artificielles - Essais aux brouillards salins (ISO
9227:2012)
Ta slovenski standard je istoveten z: EN ISO 9227:2012
ICS:
77.060 Korozija kovin Corrosion of metals
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 9227
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2012
ICS 77.060 Supersedes EN ISO 9227:2006
English Version
Corrosion tests in artificial atmospheres - Salt spray tests (ISO
9227:2012)
Essais de corrosion en atmosphères artificielles - Essais Korrosionsprüfungen in künstlichen Atmosphären -
aux brouillards salins (ISO 9227:2012) Salzsprühnebelprüfungen (ISO 9227:2012)
This European Standard was approved by CEN on 14 May 2012.
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, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 9227:2012: E
worldwide for CEN national Members.
Contents Page
Foreword .3
Foreword
This document (EN ISO 9227:2012) has been prepared by Technical Committee ISO/TC 156 "Corrosion of
metals and alloys" in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” 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 November 2012, and conflicting national standards shall be withdrawn
at the latest by November 2012.
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 9227:2006.
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, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 9227:2012 has been approved by CEN as a EN ISO 9227:2012 without any modification.
INTERNATIONAL ISO
STANDARD 9227
Third edition
2012-05-15
Corrosion tests in artificial
atmospheres — Salt spray tests
Essais de corrosion en atmosphères artificielles — Essais aux
brouillards salins
Reference number
ISO 9227:2012(E)
©
ISO 2012
ISO 9227:2012(E)
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO’s
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ii © ISO 2012 – All rights reserved
ISO 9227:2012(E)
Contents Page
Foreword .iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Test solutions . 2
3.1 Preparation of the sodium chloride solution . 2
3.2 pH adjustment . 2
3.3 Filtration . 2
4 Apparatus . 3
4.1 Component protection . 3
4.2 Spray cabinet . 3
4.3 Heater and temperature control . 3
4.4 Spraying device . 3
4.5 Collecting devices . 4
4.6 Re‑use . 4
5 Method for evaluating cabinet corrosivity . 4
5.1 General . 4
5.2 NSS test . 5
5.3 AASS test . 6
5.4 CASS test . 7
6 Test specimens . 8
7 Arrangement of the test specimens . 8
8 Operating conditions . 9
9 Duration of tests . 9
10 Treatment of specimens after test .10
11 Evaluation of results .10
12 Test report .10
Annex A (informative) Schematic diagram of one possible design of spray cabinet with means for
treating fog exhaust and drain .12
Annex B (informative) Complementary method for evaluating cabinet corrosivity using zinc
reference specimens .14
Annex C (normative) Preparation of panels with organic coatings for testing .16
Annex D (normative) Required supplementary information for testing test panels with organic coatings .17
Bibliography .18
ISO 9227:2012(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.
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.
ISO 9227 was prepared by Technical Committee ISO/TC 156, Corrosion of metals and alloys.
This third edition cancels and replaces the second edition (ISO 9227:2006), of which it constitutes a minor revision.
iv © ISO 2012 – All rights reserved
ISO 9227:2012(E)
Introduction
There is seldom a direct relation between resistance to the action of salt spray and resistance to corrosion in
other media, because several factors influencing the progress of corrosion, such as the formation of protective
films, vary greatly with the conditions encountered. Therefore, the test results should not be regarded as
a direct guide to the corrosion resistance of the tested metallic materials in all environments where these
materials might be used. Also, the performance of different materials during the test should not be taken as a
direct guide to the corrosion resistance of these materials in service.
Nevertheless, the method described gives a means of checking that the comparative quality of a metallic
material, with or without corrosion protection, is maintained.
Salt spray tests are generally suitable as corrosion protection tests for rapid analysis for discontinuities, pores
and damage in organic and inorganic coatings. In addition, for quality control purposes, comparison can be
made between specimens coated with the same coating. As comparative tests, however, salt spray tests are
only suitable if the coatings are sufficiently similar in nature.
It is often not possible to use results gained from salt spray testing as a comparative guide to the long-term
behaviour of different coating systems, since the corrosion stress during these tests differs significantly from
the corrosion stresses encountered in practice.
INTERNATIONAL STANDARD ISO 9227:2012(E)
Corrosion tests in artificial atmospheres — Salt spray tests
1 Scope
This International Standard specifies the apparatus, the reagents and the procedure to be used in conducting
the neutral salt spray (NSS), acetic acid salt spray (AASS) and copper-accelerated acetic acid salt spray
(CASS) tests for assessment of the corrosion resistance of metallic materials, with or without permanent or
temporary corro
...
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