ASTM G85 - 11

    Standard Practice for Modified Salt Spray (Fog) Testing

    Active Standard ASTM G85 | Developed by Subcommittee: G01.05

    Book of Standards Volume: 03.02


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    Significance and Use

    This practice is applicable to ferrous and nonferrous metals; also organic and inorganic coatings. The variations described herein are useful when a different or more corrosive environment than the salt fog described in Practice B117 is desired.

    1. Scope

    1.1 This practice covers and sets forth conditions for five modifications in salt spray (fog) testing for specification purposes. These are in chronological order of their development:

    1.1.1 Annex A1, acetic acid-salt spray test, continuous.

    1.1.2 Annex A2, cyclic acidified salt spray test.

    1.1.3 Annex A3, seawater acidified test, cyclic (SWAAT).

    1.1.4 Annex A4, SO2 salt spray test, cyclic.

    1.1.5 Annex A5, dilute electrolyte cyclic fog dry test.

    1.2 This practice does not prescribe the type of modification, test specimen or exposure periods to be used for a specific product, nor the interpretation to be given to the results.

    1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

    1.3.1 ExceptionFahrenheit temperature values are given for information only throughout this practice.

    1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    B117 Practice for Operating Salt Spray (Fog) Apparatus

    D609 Practice for Preparation of Cold-Rolled Steel Panels for Testing Paint, Varnish, Conversion Coatings, and Related Coating Products

    D1141 Practice for the Preparation of Substitute Ocean Water

    D1193 Specification for Reagent Water

    D1654 Test Method for Evaluation of Painted or Coated Specimens Subjected to Corrosive Environments

    E70 Test Method for pH of Aqueous Solutions With the Glass Electrode


    ICS Code

    ICS Number Code 77.060 (Corrosion of metals)

    UNSPSC Code

    UNSPSC Code


    DOI: 10.1520/G0085-11

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