Standards Development
This document gives guidelines for producing corrosion maps and maps related to increased risk of corrosion in outdoor open atmospheres, but not sheltered or semi-sheltered positions. The maps are calculated based on environmental data using specific relationships, so-called doseresponse functions. Other means of producing corrosion maps, for example using detailed measurements of corrosion and sub-sequent interpolation of measured corrosion values, are not within the scope of this document.
Corrosion maps have become more frequent and to ensure transparency and ease of comparison of corrosion maps this work was initiated.
The standard describes procedures for calculating corrosion maps based on arrays of environmental data organised in a grid and using a dose-response function. Corrosion maps based on dose-response functions can be very useful for illustrating geographical variations, trends in time and the relative importance of different underlying parameters (climate, pollution) and to communicate these results to those not working in the field of corrosion. The result for an individual grid cell of a corrosion map is, however, very uncertain. If a corrosivity assessment for a single location is needed it is recommended to also consider direct measurements of corrosion according to ISO 9223.
This makes it possible to communicate corrosion data more efficiently to a wider range of audience outside the corrosion community.
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