EN ISO 9227:2022

Corrosion tests in artificial atmospheres - Salt spray tests (ISO 9227:2022)

This document 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 corrosion protection.
It also describes the method employed to evaluate the corrosivity of the test cabinet environment.
It does not specify the dimensions or types of test specimens, the exposure period to be used for a particular product, or the interpretation of results. Such details are provided in the appropriate product specifications.
The salt spray tests are particularly useful for detecting discontinuities, such as pores and other defects, in certain metallic, organic, anodic oxide and conversion coatings.
The NSS test is particularly applicable to:
—    metals and their alloys;
—    metallic coatings (anodic and cathodic);
—    conversion coatings;
—    anodic oxide coatings;
—    organic coatings on metallic materials.
The AASS test is especially useful for testing decorative coatings of copper + nickel + chromium, or nickel + chromium. It has also been found suitable for testing anodic and organic coatings on aluminium.
The CASS test is useful for testing decorative coatings of copper + nickel + chromium, or nickel + chromium. It has also been found suitable for testing anodic and organic coatings on aluminium.
The salt spray methods are all suitable for checking that the quality of a metallic material, with or without corrosion protection, is maintained. They are not intended to be used for comparative testing as a means of ranking different materials relative to each other with respect to corrosion resistance or as means of predicting long-term corrosion resistance of the tested material.

Korrosionsprüfungen in künstlichen Atmosphären - Salzsprühnebelprüfungen (ISO 9227:2022)

Dieses Dokument legt die Prüfeinrichtung, die Reagenzien und das anzuwendende Verfahren bei der Durchführung der Prüfungen mit neutralen Salzsprühnebel (NSS, en: neutral salt spray), Essigsäure-Salzsprühnebel (AASS, en: acetic acid salt spray) und kupferbeschleunigtem Essigsäure-Salzsprühnebel (CASS, en: copper-accelerated acetic acid salt spray) zum Beurteilen der Korrosionsbeständigkeit von metallischen Materialien mit oder ohne dauerhaftem oder temporärem Korrosionsschutz fest.
Dieses Dokument beschreibt auch das Verfahren, welches angewendet wird, um die Korrosivität in der Prüfkammer zu bewerten.
Dieses Dokument legt nicht die Maße oder Arten der Prüfproben, die für ein bestimmtes Produkt anzu-wendende Dauer der Beanspruchung oder die Auswertung 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 Oxid¬schichten und Umwandlungsschichten.
Die NSS-Prüfung ist insbesondere anwendbar für:
   Metalle und deren Legierungen;
   (anodisch oder kathodisch wirksame) Beschichtungen;
   Umwandlungsschichten;
   anodische Oxidschichten;
   organische Beschichtungen auf metallischen Materialien.
Die AASS-Prüfung ist besonders nützlich zum Prüfen dekorativer Überzüge aus Kupfer + Nickel + Chrom oder Nickel + Chrom. Sie wurde auch zum Prüfen anodischer und organischer Schichten auf Aluminium als geeignet befunden.
Die CASS-Prüfung ist besonders nützlich zum Prüfen dekorativer Überzüge aus Kupfer + Nickel + Chrom oder Nickel + Chrom. Sie eignet sich auch zum Prüfen anodischer und organischer Schichten auf Aluminium.
Die Salzsprühnebelverfahren sind alle geeignet zum Prüfen, ob die Qualität eines metallischen Materials, mit oder ohne Korrosionsschutz, erhalten bleibt. Sie sind nicht als Vergleichsprüfung gedacht, um unterschiedliche Materialien nach ihrer Korrosionsbeständigkeit einzustufen oder um die Langzeitkorrosionsbeständigkeit des geprüften Materials vorherzusagen.

Essais de corrosion en atmosphères artificielles - Essais aux brouillards salins (ISO 9227:2022)

Le présent document spécifie l’appareillage, les réactifs et le mode opératoire à utiliser lors de la réalisation de l’essai au brouillard salin neutre (NSS), de l’essai au brouillard salin acétique (AASS) et de l’essai accéléré au brouillard salin cupro‑acétique (CASS) destinés à évaluer la résistance à la corrosion de matériaux métalliques, avec ou sans revêtement de protection contre la corrosion, temporaire ou permanent.
Il décrit également la méthode à appliquer pour évaluer la corrosivité du milieu de la chambre d’essai.
Il ne spécifie pas les dimensions ou types des éprouvettes d’essai, le temps durant lequel exposer un produit particulier ni l’interprétation des résultats. Ces détails sont fournis dans les spécifications des produits correspondantes.
Les essais au brouillard salin sont particulièrement utiles pour détecter les discontinuités du type pores ou autres défauts de certains revêtements métalliques, organiques, d’oxydes anodiques ou de couches de conversion.
L’essai NSS s’applique particulièrement:
—    aux métaux et à leurs alliages;
—    aux revêtements métalliques (anodiques et cathodiques);
—    aux couches de conversion;
—    aux revêtements d’oxydes anodiques;
—    aux revêtements organiques sur matériaux métalliques.
L’essai AASS est particulièrement utile pour évaluer les revêtements décoratifs de cuivre + nickel + chrome ou de nickel + chrome. Il s’est également révélé utile pour évaluer des revêtements anodiques et organiques sur l’aluminium.
L’essai CASS est utile pour évaluer les revêtements décoratifs de cuivre + nickel + chrome ou de nickel + chrome. Il s’est également révélé utile pour évaluer des revêtements anodiques et organiques sur l’aluminium.
Les méthodes au brouillard salin conviennent toutes pour vérifier que la qualité d’un matériau métallique, avec ou sans revêtement protecteur contre la corrosion, est maintenue. Il n’est pas recommandé de les utiliser pour des essais comparatifs en vue de classer les différents matériaux les uns par rapport aux autres vis‑à‑vis de la résistance à la corrosion ou comme moyen de prédire la résistance à la corrosion à long terme du matériau soumis à essai.

Korozijski preskusi v umetnih atmosferah - Korozijski preskusi v slani komori (ISO 9227:2022)

Ta dokument določa naprave, reagente in postopek, namenjene za izvajanje preskusov z nevtralno slano meglico (NSS), slano meglico z ocetno kislino (AASS) in preskusov s slano meglico z ocetno kislino, pospešenih 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 ali vrst preskušancev, časa izpostavljenosti za določen proizvod ali razlage rezultatov. Te podrobnosti so navedene v ustreznih specifikacijah proizvodov. Preskusi s slano meglico so še posebej uporabni za zaznavanje nepravilnosti, kot so pore in druge napake v določenih kovinskih, organskih, anodno oksidnih in reakcijskih prevlekah. Preskus NSS se uporablja predvsem za: – kovine in njihove zlitine, – kovinske prevleke (anodne in katodne), – reakcijske prevleke, – anodno oksidne prevleke; – organske prevleke na kovinskih materialih. Preskus AASS je še posebej uporaben za preskušanje dekorativnih prevlek z bakrom + nikljem + kromom ali nikljem + kromom. Ugotovljeno je bilo tudi, da je primeren za preskušanje anodnih in organskih prevlek na aluminiju. Preskus CASS je uporaben za preskušanje dekorativnih prevlek z bakrom + nikljem + kromom ali nikljem + kromom. Ugotovljeno je bilo tudi, da je primeren za preskušanje anodnih in organskih prevlek na aluminiju. Vse metode s slano meglico so ustrezne za preverjanje vzdrževanja kakovosti kovinskih materialov s protikorozijsko zaščito ali brez nje. Niso namenjene za uporabo pri primerjalnih preskusih kot sredstvo za razvrščanje različnih materialov glede na odpornost proti koroziji ali kot sredstvo za predvidevanje dolgoročne odpornosti preskusnih materialov proti koroziji.

General Information

• Status: Published
• Publication Date: 22-Nov-2022
• 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-Nov-2022
• Completion Date: 23-Nov-2022
• Ref Project: SIST EN ISO 9227:2023 - Corrosion tests in artificial atmospheres - Salt spray tests (ISO 9227:2022)

Relations

• Replaces: EN ISO 9227:2017 - Corrosion tests in artificial atmospheres - Salt spray tests (ISO 9227:2017)
• Effective Date: 23-Sep-2020
• Amended By: EN ISO 9227:2022/A1:2024 - Corrosion tests in artificial atmospheres - Salt spray tests - Amendment 1: Footnote of warning (ISO 9227:2022/Amd 1:2024)
• Effective Date: 28-Jun-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2023
Nadomešča:
SIST EN ISO 9227:2017
Korozijski preskusi v umetnih atmosferah - Korozijski preskusi v slani komori (ISO
9227:2022)
Corrosion tests in artificial atmospheres - Salt spray tests (ISO 9227:2022)
Korrosionsprüfungen in künstlichen Atmosphären - Salzsprühnebelprüfungen (ISO
9227:2022)
Essais de corrosion en atmosphères artificielles - Essais aux brouillards salins (ISO
9227:2022)
Ta slovenski standard je istoveten z: EN ISO 9227:2022
ICS:
77.060 Korozija kovin Corrosion of metals
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 9227
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2022
EUROPÄISCHE NORM
ICS 77.060 Supersedes EN ISO 9227:2017
English Version
Corrosion tests in artificial atmospheres - Salt spray tests
(ISO 9227:2022)
Essais de corrosion en atmosphères artificielles - Korrosionsprüfungen in künstlichen Atmosphären -
Essais aux brouillards salins (ISO/FDIS 9227:2022) Salzsprühnebelprüfungen (ISO/FDIS 9227:2022)
This European Standard was approved by CEN on 12 November 2022.

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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye 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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 9227:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 9227:2022) has been prepared by Technical Committee ISO/TC 156 "Corrosion
of metals and alloys" in collaboration with Technical Committee CEN/TC 262 “Metallic and other
inorganic coatings, including for corrosion protection and corrosion testing of metals and alloys” 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 May 2023, and conflicting national standards shall be
withdrawn at the latest by May 2023.
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 9227:2017.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 9227:2022 has been approved by CEN as EN ISO 9227:2022 without any modification.

INTERNATIONAL ISO
STANDARD 9227
Fifth edition
2022-11
Corrosion tests in artificial
atmospheres — Salt spray tests
Essais de corrosion en atmosphères artificielles — Essais aux
brouillards salins
Reference number
ISO 9227:2022(E)
ISO 9227:2022(E)
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO 9227:2022(E)
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Principle . 2
5 Test solutions . 2
5.1 Preparation of the sodium chloride solution . 2
5.2 Preparation of each test solution with pH adjustment . 3
5.2.1 pH of the salt solution . 3
5.2.2 Neutral salt spray test . 3
5.2.3 Acetic acid salt spray test . 3
5.2.4 Copper-accelerated acetic acid salt spray test . 4
5.3 Filtration . 4
6 Apparatus . 4
6.1 Component protection . 4
6.2 Spray cabinet . 4
6.3 Heater and temperature control . . 4
6.4 Spraying device . 4
6.5 Collecting devices . 5
6.6 Re-use . 6
7 Method for evaluating cabinet corrosivity . 6
7.1 General . 6
7.2 Reference specimens . 6
7.3 Arrangement of the reference specimens . 7
7.4 Determination of mass loss (mass per area) . 7
7.5 Satisfactory performance of cabinet . 8
8 Test specimens . 8
9 Arrangement of the test specimens .8
10 Operating conditions . 9
11 Duration of tests . 9
12 Treatment of test specimens after test .10
12.1 General . 10
12.2 Non-organic coated test specimens: metallic and/or inorganic coated . 10
12.3 Organic coated test specimens . 10
12.3.1 Scribed organic coated test specimens . 10
12.3.2 Organic coated but not scribed test specimens . 10
13 Evaluation of results .11
14 Test report .11
Annex A (informative) Example schematic diagram of one possible design of spray cabinet
with means for optional treating fog exhaust and drain .13
Annex B (informative) Complementary method for evaluating cabinet corrosivity using
zinc reference specimens .15
Annex C (normative) Preparation of specimens with organic coatings for testing .17
Annex D (informative) Required supplementary information for testing test specimens
with organic coatings.18
iii
ISO 9227:2022(E)
Annex E (informative) Examples of arrangement of the collecting devices .19
Annex F (informative) Interlaboratory comparison for reference specimens .
...