NF EN ISO 12944-2

NF EN ISO 12944-2

December 2017
Standard Current

Paints and varnishes - Corrosion protection of steel structures by protective paint systems - Part 2 : Classification of environments

ISO 12944-2:2017 deals with the classification of the principal environments to which steel structures are exposed, and the corrosivity of these environments. ISO 12944-2:2017 - defines atmospheric-corrosivity categories, based on mass loss (or thickness loss) by standard specimens, and describes typical natural atmospheric environments to which steel structures are exposed, giving advice on the estimation of the corrosivity, - describes different categories of environment for structures immersed in water or buried in soil, and - gives information on some special corrosion stresses that can cause a significant increase in corrosion rate or place higher demands on the performance of the protective paint system. The corrosion stresses associated with a particular environment or corrosivity category represent one essential parameter governing the selection of protective paint systems.

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Main informations

Collections

National standards and national normative documents

Publication date

December 2017

Number of pages

21 p.

Reference

NF EN ISO 12944-2

ICS Codes

87.020   Paint coating processes
25.220.10   Surface preparation

Classification index

T34-555-2

Print number

1

International kinship

ISO 12944-2:2017

European kinship

EN ISO 12944-2:2017
Sumary
Paints and varnishes - Corrosion protection of steel structures by protective paint systems - Part 2 : Classification of environments

ISO 12944-2:2017 deals with the classification of the principal environments to which steel structures are exposed, and the corrosivity of these environments. ISO 12944-2:2017

- defines atmospheric-corrosivity categories, based on mass loss (or thickness loss) by standard specimens, and describes typical natural atmospheric environments to which steel structures are exposed, giving advice on the estimation of the corrosivity,

- describes different categories of environment for structures immersed in water or buried in soil, and

- gives information on some special corrosion stresses that can cause a significant increase in corrosion rate or place higher demands on the performance of the protective paint system.

The corrosion stresses associated with a particular environment or corrosivity category represent one essential parameter governing the selection of protective paint systems.

Replaced standards (1)
NF EN ISO 12944-2
September 1998
Standard Cancelled
Paints and varnishes. Corrosion protection of steel structures by protective paint systems. Part 2 : classification of environments.

Le présent document décrit l'impact sur les structures en acier exposées à l'air, immergées ou enterrées, présente une classification basée sur des catégories de corrosivité en fonction de différents environnements atmosphériques et décrit différents environnements pour les structures immergées ou enterrées.

Table of contents
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  • Avant-propos
  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions
  • 4 Contraintes de corrosion dues à l'atmosphère, à l'eau et au sol
  • 5 Classification des environnements
  • Annexe A (informative) Conditions climatiques
  • Annexe B (informative) Cas particuliers
  • Bibliographie
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