SYMPOSIA PAPER Published: 01 January 2002

Classification of the Corrosivity of the Atmosphere — Standardized Classification System and Approach for Adjustment


Atmospheric corrosivity information is essential for selection of materials of construction, protective coatings and other measures used to prevent corrosion. Standards ISO 9223 - 9226 elaborated in ISO/TC 156/WG 4 are well accepted, used by corrosion engineers and introduced in other normative documents. Work on adjustment of the atmospheric corrosivity classification system is going on in the WG 4 with the aim to cover some gaps in this system. Statistical treatment of the ISOCORRAG program data and other data makes it possible to obtain a better definition of environmental influencies and specification of standard specimens. More sensitive procedures for corrosivity derivation for low aggressive indoor atmospheres have been recommended.

Author Information

Knotkova, D
SVUOM Ltd., Praha 7, Czech Republic
Kucera, V
SCI, Stockholm, Sweden
Dean, SW
Air Products and Chemicals, Inc., Allentown, PA, USA
Boschek, P
Charles University, Praha 1, Czech Republic
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Developed by Committee: G01
Pages: 109–124
DOI: 10.1520/STP10887S
ISBN-EB: 978-0-8031-5467-4
ISBN-13: 978-0-8031-2896-5