IS 14297 : 2024/ISO 9226 : 2012 Corrosion of Metals and Alloys - Corrosivity of Atmospheres - Determination of Corrosion Rate of Standard Specimens for the Evaluation of Corrosivity
NATIONAL FOREWORD
This Indian Standard is identical to ISO 9226 : 2012 'Corrosion of metals and alloys - Corrosivity of atmospheres - Determination of corrosion rate of standard specimens for the evaluation of corrosivity' issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of Corrosion Protection and Finishes Sectional Committee and approval of the Metallurgical Engineering Division Council.
This standard was first published in 1995. The first revision of this standard has been undertaken to align with the International Standard ISO 9226 : 2012 under dual numbering system.
The characterization of an atmospheric corrosion test site or of a service location with respect to its corrosivity can be accomplished by determining the corrosion rate of standard specimens exposed for one year to the atmosphere at the respective location (direct corrosivity evaluation). The standard specimens are flat plate or open helix specimens of the four standard structural materials, aluminium, copper, steel, and zinc. These methods represent an economical way for corrosivity evaluation taking into account all local environmental influences.
Former title of the Indian Standard IS 14297 was 'Corrosion of metals and alloys - Determination of corrosion rate of standard specimens for the evaluation of corrosivity - Methods of' which is changed to 'Corrosion of metals and alloys - Corrosivity of atmospheres - Determination of corrosion rate of standard specimens for the evaluation of corrosivity' as per the title of ISO 9226.
The text of ISO standard has been approved as suitable for publication as in Indian Standard without deviations. Certain terminologies and conventions are, however, not identical with those used in Indian Standard. Attention is especially drawn to the following:
a) Wherever the words 'International Standard' appear referring to this standard, it should be read as 'Indian Standard'; and
b) Comma (,) has been used as a decimal marker while in Indian Standards the current practice is to use a point (.) as the decimal marker.