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ISO 9224

Corrosion of metals and alloys — Corrosivity of atmospheres — Guiding values for the corrosivity categories

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Organization: ISO
Publication Date: 1 February 2012
Status: active
Page Count: 20
ICS Code (Corrosion of metals): 77.060
scope:

This International Standard specifies guiding values of corrosion attack for metals and alloys exposed to natural outdoor atmospheres for exposures greater than one year. This International Standard is intended to be used in conjunction with ISO 9223.

Guiding corrosion values for standard structural materials can be used for engineering calculations. The guiding corrosion values specify the technical content of each of the individual corrosivity categories for these standard metals.

Annex A provides examples of calculated maximum corrosion attack after extended exposure (up to 20 years) for six standardized corrosivity categories.

Annex B provides presumed average initial and steady-state corrosion rates of standard metals in intervals relative to six standardized corrosivity categories.

Annex C provides the calculation procedure for corrosion attack of steels in regard to their composition.

Document History

ISO 9224
February 1, 2012
Corrosion of metals and alloys — Corrosivity of atmospheres — Guiding values for the corrosivity categories
This International Standard specifies guiding values of corrosion attack for metals and alloys exposed to natural outdoor atmospheres for exposures greater than one year. This International Standard...
ISO 9224
January 1, 1992
Corrosion of Metals and Alloys - Corrosivity of Atmospheres - Guiding Values for the Corrosivity Categories First Edition
This tnternationai Standard specifies guiding corrosion values and the characteristics of corrosion for the corrosivity categories defined in IS0 9223. Guiding corrosion values give corrosion rates...

References

This document references:
ISO 9223 - Corrosion of metals and alloys — Corrosivity of atmospheres — Classification, determination and estimation
Published by ISO on February 1, 2012
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...
This document references:
ASTM G101 - Standard Guide for Estimating the Atmospheric Corrosion Resistance of Low-Alloy Steels
Published by ASTM on May 1, 2004
This guide presents two methods for estimating the atmospheric corrosion resistance of low-alloy weathering steels, such as those described in Specifications A242/A242M, A588/A588M, A606/A606M Type...
This document references:
ISO 9225 - Corrosion of metals and alloys — Corrosivity of atmospheres — Measurement of environmental parameters affecting corrosivity of atmospheres
Published by ISO on February 1, 2012
This International Standard specifies methods for measuring the parameters needed for corrosivity estimation used for classification of the corrosivity of atmospheres in ISO 9223. This International...
This document references:
ISO 9223 - Corrosion of metals and alloys — Corrosivity of atmospheres — Classification, determination and estimation
Published by ISO on February 1, 2012
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...
This document references:
ISO 11303 - Corrosion of Metals and Alloys - Guidelines for Selection of Protection Methods Against Atmospheric Corrosion
Published by ISO on November 1, 2002
A description is not available for this item.
This document references:
ISO 8044 - Corrosion of metals and alloys — Vocabulary
Published by ISO on February 1, 2020
This document defines terms relating to corrosion that are widely used in modern science and technology. In addition, some definitions are supplemented with short explanations. NOTE 1 Throughout the...
This document is referenced by:
ISO 15686-2 - Buildings and constructed assets - Service life planning - Part 2: Service life prediction procedures
Published by ISO on June 1, 2012
This part of ISO 15686 describes procedures that facilitate service life predictions of building components, based on technical and functional performance. It provides a general framework, principles...
This document is referenced by:
BS EN ISO 9226 - Corrosion of metals and alloys - Corrosivity of atmospheres - Determination of corrosion rate of standard specimens for the evaluation of corrosivity
Published by BSI on February 29, 2012
A description is not available for this item.
This document is referenced by:
SN EN ISO 9226 - Corrosion of metals and alloys - Corrosivity of atmospheres - Determination of corrosion rate of standard specimens for the evaluation of corrosivity
Published by SNV on June 1, 2012
This International Standard specifies methods which can be used for the determination of corrosion rate with standard specimens. The values obtained from the measurements (corrosion rates for the...
This document is referenced by:
SN EN ISO 9223 - Corrosion of metals and alloys - Corrosivity of atmospheres - Classification, determination and estimation
Published by SNV on June 1, 2012
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...
This document is referenced by:
EN ISO 14713-1 - Zinc coatings - Guidelines and recommendations for the protection against corrosion of iron and steel in structures - Part 1: General principles of design and corrosion resistance
Published by CEN on May 1, 2017
This document provides guidelines and recommendations regarding the general principles of design which are appropriate for articles to be zinc coated for corrosion protection and the level of...
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