ASTM G31-72(2004)

    Standard Practice for Laboratory Immersion Corrosion Testing of Metals

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    1. Scope

    1.1 This practice describes accepted procedures for and factors that influence laboratory immersion corrosion tests, particularly mass loss tests. These factors include specimen preparation, apparatus, test conditions, methods of cleaning specimens, evaluation of results, and calculation and reporting of corrosion rates. This practice also emphasizes the importance of recording all pertinent data and provides a checklist for reporting test data. Other ASTM procedures for laboratory corrosion tests are tabulated in the Appendix. (Warning-In many cases the corrosion product on the reactive metals titanium and zirconium is a hard and tightly bonded oxide that defies removal by chemical or ordinary mechanical means. In many such cases, corrosion rates are established by mass gain rather than mass loss.)

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

    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.

    International Organization for Standardization (ISO) Standards

    ISO 11463 Corrosion of metals and alloys - Evaluation of pitting corrosion

    ISO 11845 Corrosion of metals and alloys - General principles for corrosion testing

    ISO 11846 Corrosion of metals and alloys - Determination of resistance to intergranular corrosion of solution heat-treatable aluminum alloys

    ISO 11881 Corrosion of metals and alloys - Exfoliation corrosion testing of aluminum alloys

    ISO 3651-1 Austenitic Stainless Steels - Determination of resistance to intergranular corrosion of stainless steels - Part I: Austenitic and ferritic-austenitic (duplex) stainless steels - Corrosion test in nitric acid medium by measurement of loss in mass (Huey test)

    ISO 3651-2 Determination of resistance to intergranular corrosion of stainless steels - Part 2: Ferritic, austenitic and ferritic-austenitic (duplex) stainless steels - corrosion test in media containing sulfuric acid

    ISO 6509 Corrosion of metals and alloys - Determination of dezincification resistance of brass

    ISO 8407 Corrosion of metals and alloys - Removal of corrosion products from corrosion test specimens

    ISO 8993 Anodized aluminum and aluminum alloys - Rating system for the evaluation of pitting corrosion - Chart method

    ISO 8994 Anodized aluminum and aluminum alloys - Rating system for the evaluation of pitting corrosion - Grid method

    ISO 9400 Nickel-based alloys - Determination of resistance to intergranular corrosion

    ASTM Standards

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

    D1193 Specification for Reagent Water

    E8 Test Methods for Tension Testing of Metallic Materials

    E300 Practice for Sampling Industrial Chemicals

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

    G28 Test Methods for Detecting Susceptibility to Intergranular Corrosion in Wrought, Nickel-Rich, Chromium-Bearing Alloys

    G34 Test Method for Exfoliation Corrosion Susceptibility in 2XXX and 7XXX Series Aluminum Alloys (EXCO Test)

    G46 Guide for Examination and Evaluation of Pitting Corrosion

    G48 Test Methods for Pitting and Crevice Corrosion Resistance of Stainless Steels and Related Alloys by Use of Ferric Chloride Solution

    G66 Test Method for Visual Assessment of Exfoliation Corrosion Susceptibility of 5XXX Series Aluminum Alloys (ASSET Test)

    G67 Test Method for Determining the Susceptibility to Intergranular Corrosion of 5XXX Series Aluminum Alloys by Mass Loss After Exposure to Nitric Acid (NAMLT Test)

    G71 Guide for Conducting and Evaluating Galvanic Corrosion Tests in Electrolytes

    G78 Guide for Crevice Corrosion Testing of Iron-Base and Nickel-Base Stainless Alloys in Seawater and Other Chloride-Containing Aqueous Environments

    G82 Guide for Development and Use of a Galvanic Series for Predicting Galvanic Corrosion Performance

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

    G108 Test Method for Electrochemical Reactivation (EPR) for Detecting Sensitization of AISI Type 304 and 304L Stainless Steels

    G110 Practice for Evaluating Intergranular Corrosion Resistance of Heat Treatable Aluminum Alloys by Immersion in Sodium Chloride + Hydrogen Peroxide Solution

    G112 Guide for Conducting Exfoliation Corrosion Tests in Aluminum Alloys

    G116 Practice for Conducting Wire-on-Bolt Test for Atmospheric Galvanic Corrosion

    G135 Guide for Computerized Exchange of Corrosion Data for Metals

    G170 Guide for Evaluating and Qualifying Oilfield and Refinery Corrosion Inhibitors in the Laboratory

    G184 Practice for Evaluating and Qualifying Oil Field and Refinery Corrosion Inhibitors Using Rotating Cage

    G185 Practice for Evaluating and Qualifying Oil Field and Refinery Corrosion Inhibitors Using the Rotating Cylinder Electrode

    NACE International Standards

    SP0690 Standard Format for Collection and Compilation of Data for Computerized Material Corrosion Resistance Database Input


    ICS Code

    ICS Number Code 71.100.80 (Chemicals for purification of water)

    Referencing This Standard
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    DOI: 10.1520/G0031-72R04

    Citation Format

    ASTM G31-72(2004), Standard Practice for Laboratory Immersion Corrosion Testing of Metals, ASTM International, West Conshohocken, PA, 2004, www.astm.org

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