BS EN ISO 9223:2012
Current
The latest, up-to-date edition.
Corrosion of metals and alloys. Corrosivity of atmospheres. Classification, determination and estimation
Hardcopy , PDF
English
29-02-2012
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Category of corrosivity of the atmosphere
6 Classification of corrosivity of the atmosphere
7 Corrosivity determination based on corrosion
rate measurement of standard specimens
8 Corrosivity estimation based on environmental information
Annex A (informative) - Sources of uncertainty associated
with the determination and estimation of
atmospheric corrosivity
Annex B (informative) - Characterization of the atmosphere
in relation to its corrosivity
Annex C (informative) - Description of typical atmospheric
environments related to the estimation of
corrosivity categories
Bibliography
Specifies a classification system for the corrosivity of atmospheric environments.
Committee |
ISENFE/8
|
DevelopmentNote |
Together with BS EN ISO 9224, BS EN ISO 9225 and BS EN ISO 9226, it supersedes BS EN 12500. (02/2012)
|
DocumentType |
Standard
|
Pages |
26
|
PublisherName |
British Standards Institution
|
Status |
Current
|
Supersedes |
This International Standard establishes a classification system for the corrosivity of atmospheric environments. It
defines corrosivity categories for the atmospheric environments by the first-year corrosion rate of standard specimens,
gives dose-response functions for normative estimation of the corrosivity category based on the calculated first-year corrosion loss of standard metals, and
makes possible an informative estimation of the corrosivity category based on knowledge of the local environmental situation.
This International Standard specifies the key factors in the atmospheric corrosion of metals and alloys. These are the temperature-humidity complex, pollution by sulfur dioxide and airborne salinity.
Temperature is also considered an important factor for corrosion in areas outside the temperate macroclimatic zone. The temperature-humidity complex can be evaluated in terms of time of wetness. Corrosion effects of other pollutants (ozone, nitrogen oxides, particulates) can influence the corrosivity and the evaluated one-year corrosion loss, but these factors are not considered decisive in the assessment of corrosivity according to this International Standard.
This International Standard does not characterize the corrosivity of specific service atmospheres, e.g. atmospheres in chemical or metallurgical industries.
The classified corrosivity categories and introduced pollution levels can be directly used for technical and economical analyses of corrosion damage and for a rational choice of corrosion protection measures.
Standards | Relationship |
EN ISO 9223:2012 | Identical |
ISO 9223:2012 | Identical |
BS 8006-2(2011) : 2011 | CODE OF PRACTICE FOR STRENGTHENED/REINFORCED SOILS - PART 2: SOIL NAIL DESIGN |
BS 7543:2015 | Guide to durability of buildings and building elements, products and components |
17/30359664 DC : 0 | BS 8006-2:2011+A1:2017 - CODE OF PRACTICE FOR STRENGTHENED/REINFORCED SOILS - PART 2: SOIL NAIL DESIGN |
ISO 11844-2:2005 | Corrosion of metals and alloys Classification of low corrosivity of indoor atmospheres Part 2: Determination of corrosion attack in indoor atmospheres |
ISO 11303:2002 | Corrosion of metals and alloys — Guidelines for selection of protection methods against atmospheric corrosion |
ISO 9226:2012 | Corrosion of metals and alloys — Corrosivity of atmospheres — Determination of corrosion rate of standard specimens for the evaluation of corrosivity |
ISO 9224:2012 | Corrosion of metals and alloys — Corrosivity of atmospheres — Guiding values for the corrosivity categories |
ISO 9225:2012 | Corrosion of metals and alloys — Corrosivity of atmospheres — Measurement of environmental parameters affecting corrosivity of atmospheres |
ISO 8044:2015 | Corrosion of metals and alloys Basic terms and definitions |
ISO 11844-1:2006 | Corrosion of metals and alloys Classification of low corrosivity of indoor atmospheres Part 1: Determination and estimation of indoor corrosivity |
ISO 11844-3:2006 | Corrosion of metals and alloys Classification of low corrosivity of indoor atmospheres Part 3: Measurement of environmental parameters affecting indoor corrosivity |
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