ASTM D8206 - 18

    Standard Test Method for Oxidation Stability of Lubricating Greases—Rapid Small-Scale Oxidation Test (RSSOT)

    Active Standard ASTM D8206 | Developed by Subcommittee: D02.09.0E

    Book of Standards Volume: 05.05


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    Significance and Use

    5.1 This test method measures the net change in pressure resulting from consumption of oxygen by oxidation and gain in pressure due to formation of volatile oxidation by-products. This test method may be used for quality control to indicate batch-to-batch uniformity. It predicts neither the stability of greases stored in containers for long periods, nor the stability of films of greases on bearings and motor parts.

    5.2 Induction period as determined under the conditions of this test method can be used as an indication of oxidation stability. This test method can be used for research and development, quality control, and specification purposes. However, no correlation has been determined between the results of this test method and service performance.

    1. Scope

    1.1 This test method covers the quantitative determination of the oxidation stability of lubricating greases with a dropping point above the test temperature.

    1.2 This test method determines the resistance of lubricating greases to oxidation when stored statically in an oxygen atmosphere in a sealed system at an elevated temperature under conditions of test.

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

    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 establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

    1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


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

    ISO Standard

    EN 60751:2008

    ASTM Standards

    D942 Test Method for Oxidation Stability of Lubricating Greases by the Oxygen Pressure Vessel Method

    D4057 Practice for Manual Sampling of Petroleum and Petroleum Products

    D6300 Practice for Determination of Precision and Bias Data for Use in Test Methods for Petroleum Products and Lubricants


    ICS Code

    ICS Number Code 75.100 (Lubricants, industrial oils and related products)

    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/D8206-18

    Citation Format

    ASTM D8206-18, Standard Test Method for Oxidation Stability of Lubricating Greases—Rapid Small-Scale Oxidation Test (RSSOT), ASTM International, West Conshohocken, PA, 2018, www.astm.org

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