ASTM D7820 - 12

    Standard Test Method for Engine Coolant Corrosion Protection Under Accelerated Thermal and Oxidizing Conditions Using a Rotating Pressure Vessel

    Active Standard ASTM D7820 | Developed by Subcommittee: D15.21

    Book of Standards Volume: 15.05


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    Significance and Use

    4.1 Engines operating under severe conditions involving high temperatures, hot spot areas, entrained air, and/or small cooling systems are placing greater emphasis on engine coolant oxidation stability and corrosion protection. This standard provides an accelerated test method to assess engine coolant performance under high temperature oxidizing test conditions of new, used, and/or recycled engine coolants. The test method may also serve as a screening tool to determine oxidation stability. The test results of this method cannot stand alone as evidence of satisfactory oxidation stability and corrosion protection. The actual service of an engine coolant formulation can be determined only by more comprehensive bench, dynamometer, and field tests.

    1. Scope

    1.1 This test method covers determination of engine coolant corrosion protection and stability under accelerated thermal and oxidizing conditions using a rotary pressure vessel.

    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. Specific hazard statements are given in 6.2, 6.3, 6.4, 6.5, 6.7, 6.8, 6.9, 6.10, 11.1, 12.8, 12.9, and 12.10.


    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

    B32 Specification for Solder Metal

    D1176 Practice for Sampling and Preparing Aqueous Solutions of Engine Coolants or Antirusts for Testing Purposes

    D1193 Specification for Reagent Water

    D1384 Test Method for Corrosion Test for Engine Coolants in Glassware

    D2272 Test Method for Oxidation Stability of Steam Turbine Oils by Rotating Pressure Vessel

    E1 Specification for ASTM Liquid-in-Glass Thermometers

    E230 Specification and Temperature-Electromotive Force (EMF) Tables for Standardized Thermocouples


    ICS Code

    ICS Number Code 71.100.45 (Refrigerants and antifreezes)

    UNSPSC Code

    UNSPSC Code 25174004(Engine coolant)


    Referencing This Standard

    DOI: 10.1520/D7820-12

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM D7820-12, Standard Test Method for Engine Coolant Corrosion Protection Under Accelerated Thermal and Oxidizing Conditions Using a Rotating Pressure Vessel, ASTM International, West Conshohocken, PA, 2012, www.astm.org

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