ASTM G48-99A

    Historical Standard: ASTM G48-99A Standard Test Methods for Pitting and Crevice Corrosion Resistance of Stainless Steels and Related Alloys by Use of Ferric Chloride Solution

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    ASTM G48

    1. Scope

    1.1 These test methods cover procedures for the determination of the resistance of stainless steels and related alloys to pitting and crevice corrosion (see Terminology G 15) when exposed to oxidizing chloride environments. Four procedures are described and identified as Methods A, B, C, and D.

    1.1.1 Method A- Ferric chloride pitting test.

    1.1.2 Method B- Ferric chloride crevice test.

    1.1.3 Method C- Critical pitting temperature test.

    1.1.4 Method D- Critical crevice temperature test.

    1.2 Method A is designed to determine the relative pitting resistance of stainless steels and nickel-base, chromium-bearing alloys, whereas Method B can be used for determining both the pitting and crevice corrosion resistance of these alloys. Methods C and D allow for a ranking of alloys by minimum (critical) temperature to cause initiation of pitting corrosion and crevice corrosion, respectively, of stainless steels and nickel-base, chromium-bearing alloys in a standard ferritic chloride solution.

    1.3 These tests may be used to determine the effects of alloying additives, heat treatment, and surface finishes on pitting and crevice corrosion resistance.

    1.4 The values stated in SI units are to be regarded as the standard. Other units are given in parentheses for information only.

    1.5 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 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

    A262 Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels

    D1193 Specification for Reagent Water

    E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

    E1338 Guide for Identification of Metals and Alloys in Computerized Material Property Databases

    G1 Practice for Preparing, Cleaning, and Evaluating Corrosion Test Specimens

    G15 Terminology Relating to Corrosion and Corrosion Testing

    G46 Guide for Examination and Evaluation of Pitting Corrosion

    G107 Guide for Formats for Collection and Compilation of Corrosion Data for Metals for Computerized Database Input


    ICS Code

    ICS Number Code 77.060 (Corrosion of metals)

    UNSPSC Code

    UNSPSC Code 41114604(Corrosion testers)


    DOI: 10.1520/G0048-99A

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