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    STP1421

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

    Published: 01 January 2002


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    Abstract

    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.

    Keywords:

    atmospheric corrosivity, standards, standard specimen, environmental influence, dose-response function, indoor corrosivity


    Author Information:

    Knotkova, D
    convenor of ISO/TC 156/WG 4, senior scientist, SVUOM Ltd., Praha 7,

    Kucera, V
    senior scientist, SCI, Stockholm,

    Dean, SW
    senior scientist, Air Products and Chemicals, Inc., Allentown, PA

    Boschek, P
    senior lecturer, Charles University, Praha 1,


    Committee/Subcommittee: G01.04

    DOI: 10.1520/STP10887S