SYMPOSIA PAPER Published: 01 January 1995

Results of ISO CORRAG Program: Processing of One-Year Data in Respect to Corrosivity Classification


Elaboration and publishing of four International Standards Organization (ISO) standards, 9223 to 9226, covering the classification system and criteria, the prognostic guiding corrosion values, and the methods to be used for atmospheric corrosivity derivation, were a result of an extensive international cooperation. During this standardization procedure, the international testing program, ISOCORRAG, started with the aim to work out a database for statistical verification of the classification methods.

The outcome of this broad common testing, evaluation, and statistical analysis of the data is presented in the ISO technical report elaborated in ISO/TC 156/WG 4, and in this paper.

Broad acceptance of ISO standards, 9223 to 9226, was supported by new agreements between ISO/TC 156/WG 4, ISO/TC 35/SC 14, and CEN/TC 262/WG 3.

Author Information

Knotkova, D
National Institute for Protection of Material (SVUOM), Prague, Czech Republic
Boschek, P
Charles University, Philosophic Faculty, Prague 1, Czech Republic
Kreislova, K
National Institute for Protection of Material (SVUOM), Prague, Czech Republic
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Developed by Committee: G01
Pages: 38–55
DOI: 10.1520/STP14912S
ISBN-EB: 978-0-8031-5302-8
ISBN-13: 978-0-8031-2015-0