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ASTM D943-04a(2010)e1

Historical Reaffirmation

Standard Test Method for Oxidation Characteristics of Inhibited Mineral Oils

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1.1 This test method covers the evaluation of the oxidation stability of inhibited steam-turbine oils in the presence of oxygen, water, and copper and iron metals at an elevated temperature. This test method is limited to a maximum testing time of 10 000 h. This test method is also used for testing other oils, such as hydraulic oils and circulating oils having a specific gravity less than that of water and containing rust and oxidation inhibitors.

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

1.2.1 ExceptionThe values in parentheses in the figures are provided for information for those using old equipment based on non-SI units.

1.3 WARNINGMercury has been designated by many regulatory agencies as a hazardous material that can cause central nervous system, kidney and liver damage. Mercury, or its vapor, may be hazardous to health and corrosive to materials. Caution should be taken when handling mercury and mercury containing products. See the applicable product Material Safety Data Sheet (MSDS) for details and EPAs websitehttp://www.epa.gov/mercury/faq.htmfor additional information. Users should be aware that selling mercury and/or mercury containing products into your state or country may be prohibited by law.

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 and health practices and determine the applicability of regulatory limitations prior to use. For specific warning statements, see Section 6.

This test method is widely used for specification purposes and is considered of value in estimating the oxidation stability of lubricants, especially those that are prone to water contamination. It should be recognized, however, that correlation between results of this method and the oxidation stability of a lubricant in field service may vary markedly with field service conditions and with various lubricants. The precision statement for this method was determined on steam turbine oils.

Note 1—Furthermore, in the course of testing a lubricant by this method, other signs of deterioration, such as sludge formation or catalyst coil corrosion, may appear that are not reflected in the calculated oxidation lifetime. The subcommittee responsible for this method is investigating the application of alternative criteria for evaluation of lubricants using this test apparatus. Test Method D4310 is now available for sludge measurement.

SDO ASTM: ASTM International
Document Number D943
Publication Date Oct. 1, 2010
Language en - English
Page Count 10
Revision Level 04a(2010)e1
Supercedes
Committee D02.09.0C
Publish Date Document Id Type View
June 1, 2020 D0943-20 Revision
Dec. 1, 2019 D0943-19 Revision
Dec. 1, 2018 D0943-18 Revision
June 15, 2017 D0943-17 Revision
Nov. 1, 2004 D0943-04A Revision
May 1, 2004 D0943-04 Revision
Aug. 10, 2002 D0943-02 Revision
June 10, 1999 D0943-99 Revision
Oct. 1, 2010 D0943-04AR10E01 Reaffirmation