Corrosion of metals and alloys. Classification of low corrosivity of indoor atmospheres. Part 1: Determination and estimation of indoor corrosivity (ISO 11844-1:2020)
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This document establishes a classification of low corrosivity of indoor atmospheres. It specifies the reference metals for which a corrosion attack after a defined exposure period is used for determining corrosivity categories of indoor atmospheres of low corrosivity. It defines corrosivity categories of indoor atmospheres according to corrosion attack on standard specimens. It indicates important parameters of indoor atmospheres that can serve as a basis for an estimation of indoor corrosivity. The selection of a method for the determination of corrosion attack, description of standard specimens, exposure conditions and evaluation are given in ISO 11844-2. The measurement of environmental parameters affecting indoor corrosivity is given in ISO 11844-3.
Tämän julkaisun valmistelusta Suomessa vastaa Metalliteollisuuden Standardisointiyhdistys ry, puh. 09 19 231 (vaihde).
Sisällysluettelo
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Classification of corrosivity
5.1 General
5.2 Categories of indoor corrosivity
6 Determination of indoor atmospheric corrosivity
7 Characterization of indoor atmospheres with respect to indoor corrosivity
7.1 General
7.2 Estimation of indoor corrosivity
Annex A Relationship between ISO, IEC and ISA classification systems (informative)
Annex B Outdoor and indoor concentrations of some of the most important pollutants in different types of environments (informative)
Annex C General characterization of metal corrosion in indoor atmospheres (informative)
Annex D Guidelines for the estimation of indoor corrosivity (informative)