ASTM G202 - 12

    Standard Test Method for Using Atmospheric Pressure Rotating Cage

    Active Standard ASTM G202 | Developed by Subcommittee: G01.05

    Book of Standards Volume: 03.02


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    ASTM G202

    Significance and Use

    3.1  The rotating cage (RC) test system is relatively inexpensive and uses simple flat specimens that allow replicates to be run with each setup. (1-11).3

    3.2  The RC method can be used to evaluate either corrosion inhibitors, or materials, or both. Guide G184 describes the procedure to use rotating cage to evaluate corrosion inhibitors.

    3.3 In this test method, a general procedure is presented to obtain reproducible results using RC to simulate the effects of different types of coupon materials, inhibitor concentrations, oil, gas and brine compositions, temperature, and flow. Oil field fluids may often contain sand; however, this test method does not cover erosive effects that occur when sand is present.

    1. Scope

    1.1 This test method covers a generally accepted procedure to conduct the rotating cage (RC) experiment under atmospheric pressure.

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

    1.3 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

    D1141 Practice for the Preparation of Substitute Ocean Water

    D1193 Specification for Reagent Water

    D1293 Test Methods for pH of Water

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

    G16 Guide for Applying Statistics to Analysis of Corrosion Data

    G31 Practice for Laboratory Immersion Corrosion Testing of Metals

    G46 Guide for Examination and Evaluation of Pitting Corrosion

    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


    ICS Code

    ICS Number Code 77.060 (Corrosion of metals)

    UNSPSC Code

    UNSPSC Code 12163600(Corrosion inhibitors)


    DOI: 10.1520/G0202-12

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