NF EN ISO 9225

NF EN ISO 9225

March 2012
Standard Current

Corrosion of metals and alloys - Corrosivity of atmospheres - Measurement of environmental parameters affecting corrosivity of atmospheres

ISO 9225:2012 specifies methods for measuring the parameters needed for corrosivity estimation used for classification of the corrosivity of atmospheres in ISO 9223.ISO 9225:2012 specifies methods for the measurement of environmental parameters for normative corrosivity estimation based on calculated first-year corrosion rates of standard metals, and informative corrosivity estimation based on characterization of the exposure environment.It does not describe the usual analytical techniques for the measured parameters since this depends on the available analytical techniques used in laboratories. Specific methods for deposition measurement of SO2 and Cl- deposition rates and conversional factors for comparison of different measuring methods are given.

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Main informations

Collections

National standards and national normative documents

Publication date

March 2012

Number of pages

30 p.

Reference

NF EN ISO 9225

ICS Codes

77.060   Corrosion of metals

Classification index

A05-212

Print number

1 - 07/03/2012

International kinship

ISO 9225:2012

European kinship

EN ISO 9225:2012
Sumary
Corrosion of metals and alloys - Corrosivity of atmospheres - Measurement of environmental parameters affecting corrosivity of atmospheres

ISO 9225:2012 specifies methods for measuring the parameters needed for corrosivity estimation used for classification of the corrosivity of atmospheres in ISO 9223.

ISO 9225:2012 specifies methods for the measurement of environmental parameters for normative corrosivity estimation based on calculated first-year corrosion rates of standard metals, and informative corrosivity estimation based on characterization of the exposure environment.

It does not describe the usual analytical techniques for the measured parameters since this depends on the available analytical techniques used in laboratories. Specific methods for deposition measurement of SO2 and Cl- deposition rates and conversional factors for comparison of different measuring methods are given.

Replaced standards (2)
NF ISO 9225
June 2002
Standard Cancelled
Corrosion of metals and alloys - Corrosivity of atmospheres - Measurement of pollution

NF EN 12500
October 2000
Standard Cancelled
Protection of metallic materials against corrosion - Corrosion likelihood in atmospheric environment - Classification, determination and estimation of corrosivity of atmospheric environments

Le présent document définit une classification de la corrosivité des environnements atmosphériques. Il ne peut être utilisé pour déterminer les catégories de corrosivité à partir de durées d'exposition inférieures ou supérieures à la première année.

Table of contents
  • Avant-propos
    iv
  • Introduction
    v
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Principes
    2
  • 4 Paramètres d'humidité et de température
    2
  • 4.1 Humidité relative
    2
  • 4.2 Température
    2
  • 5 Polluants contenus dans l'air
    3
  • 5.1 Principe
    3
  • 5.2 Implantation des appareils de mesure
    3
  • 5.3 Méthodes de mesurage et durée
    3
  • Annexe A (normative) Détermination de la vitesse de dépôt du dioxyde de soufre sur des boites à sulfatation au dioxyde de plomb
    6
  • Annexe B (normative) Détermination de la vitesse de dépôt du dioxyde de soufre dans le cylindre à sulfatation au dioxyde de plomb
    9
  • Annexe C (normative) Détermination de la vitesse de dépôt du dioxyde de soufre sur des surfaces alcalines
    12
  • Annexe D (normative) Détermination de la vitesse de dépôt des chlorures par la méthode de la chandelle humide
    14
  • Annexe E (normative) Détermination de la vitesse de dépôt des chlorures par la méthode de la plaque sèche
    18
  • Annexe F (normative) Comparaison des vitesses de dépôt des chlorures et du dioxyde de soufre déterminées par différentes méthodes
    21
  • Bibliographie
    22
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