NF EN ISO 9227

NF EN ISO 9227

September 2012
Standard Cancelled

Corrosion tests in artificial atmospheres - Salt spray tests

Le présent document spécifie l'appareillage, les réactifs et le mode opératoire à utiliser lors de la réalisation des essais au brouillard salin neutre (NSS), au brouillard salin acétique (AASS) et 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.

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Main informations

Collections

National standards and national normative documents

Publication date

September 2012

Number of pages

27 p.

Reference

NF EN ISO 9227

ICS Codes

77.060   Corrosion of metals
87.040   Paints and varnishes

Classification index

A05-101

Print number

1 - 06/09/2012

International kinship

ISO 9227:2012

European kinship

EN ISO 9227:2012
Sumary
Corrosion tests in artificial atmospheres - Salt spray tests

Le présent document spécifie l'appareillage, les réactifs et le mode opératoire à utiliser lors de la réalisation des essais au brouillard salin neutre (NSS), au brouillard salin acétique (AASS) et 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.
Replaced standards (1)
NF EN ISO 9227
March 2007
Standard Cancelled
Corrosion tests in artificial atmospheres - Salt spray tests

ISO 9227:2006 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.

Standard replaced by (1)
NF EN ISO 9227
June 2017
Standard Cancelled
Corrosion tests in artificial atmospheres - Salt spray tests

ISO 9227:2017 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 neutral salt spray (NSS) test particularly applies to - metals and their alloys, - metallic coatings (anodic and cathodic), - conversion coatings, - anodic oxide coatings, and - organic coatings on metallic materials. The acetic acid salt spray (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 copper-accelerated acetic acid salt spray (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.

Table of contents
  • Avant-propos
    iv
  • Introduction
    v
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Solutions d'essai
    2
  • 3.1 Préparation de la solution de chlorure de sodium
    2
  • 3.2 Ajustement du pH
    2
  • 3.3 Filtration
    3
  • 4 Appareillage
    3
  • 4.1 Protection des pièces
    3
  • 4.2 Chambre de pulvérisation
    3
  • 4.3 Dispositif de chauffage et de régulation de la température
    3
  • 4.4 Dispositif de pulvérisation
    3
  • 4.5 Collecteurs
    4
  • 4.6 Réutilisation
    4
  • 5 Méthode d'évaluation de la corrosivité de la chambre d'essai
    4
  • 5.1 Généralités
    4
  • 5.2 Essai NSS
    5
  • 5.3 Essai AASS
    6
  • 5.4 Essai CASS
    7
  • Éprouvettes
    8
  • 7 Disposition des éprouvettes
    8
  • 8 Conditions opératoires
    9
  • 9 Durée des essais
    10
  • 10 Traitement des éprouvettes après essai
    10
  • 11 Évaluation des résultats
    10
  • 12 Rapport d'essai
    11
  • Annexe A (informative) Représentation schématique d'un modèle possible de chambre de pulvérisation munie de moyens de traitement du brouillard et de l'eau lors de leur évacuation
    12
  • Annexe B (informative) Méthode complémentaire pour l'évaluation de la corrosivité des essais utilisant des éprouvettes de référence en zinc
    14
  • Annexe C (normative) Préparation des panneaux avec revêtements organiques pour les essais
    16
  • Annexe D (normative) Informations complémentaires requises pour les essais de panneaux avec revêtement organique
    17
  • Bibliographie
    18
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