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ISO 9223

Corrosion of Metals and Alloys - Corrosivity of Atmospheres - Classification

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Organization: ISO
Publication Date: 1 January 1992
Status: inactive
Page Count: 18
ICS Code (Corrosion of metals): 77.060
scope:

This International Standard specifies the key factors in the atmospheric corrosion of metals and alloys. These are the time of wetness (T), pollution by sulfur dioxide (SO2) (P) and air-borne salinity (S). Corrosivity categories (C), which are defined on the basis of these three factors, are used for the classification of atmospheres.

The classification given in this International Standard can be used directly to evaluate the corrosivity of attnospheres for metals and alloys under known conditions of time of wetness, pollution by sulfur dioxide (SO2)and/or airborne salinity.

This International Standard does not chracterize the corrosivity of specific service atmospheres, e.g. atmospheres in the chemical or metallurgical industries. The pollution and time of wetness characterization of these environments cannot be generalized.

The classified pollution and corrosivity categories can be directly used for technical and economical analyses of corrosion damage and for a rational choice of protection measures.

Annex A summarizes the technical content of this International Standard in an easily read form.

Document History

February 1, 2012
Corrosion of metals and alloys — Corrosivity of atmospheres — Classification, determination and estimation
This International Standard establishes a classification system for the corrosivity of atmospheric environments. It — defines corrosivity categories for the atmospheric environments by the...
ISO 9223
January 1, 1992
Corrosion of Metals and Alloys - Corrosivity of Atmospheres - Classification
This International Standard specifies the key factors in the atmospheric corrosion of metals and alloys. These are the time of wetness (T), pollution by sulfur dioxide (SO2) (P) and air-borne...

References

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