ASTM D943-20
(Test Method)Standard Test Method for Oxidation Characteristics of Inhibited Mineral Oils
Standard Test Method for Oxidation Characteristics of Inhibited Mineral Oils
SIGNIFICANCE AND USE
5.1 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.
SCOPE
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 Exception—The values in parentheses in the figures are provided for information for those using old equipment based on non-SI units.
1.3 WARNING—Mercury has been designated by many regulatory agencies as a hazardous substance that can cause serious medical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Use Caution when handling mercury and mercury-containing products. See the applicable product Safety Data Sheet (SDS) for additional information. The potential exists that selling mercury or mercury-containing products, or both, is prohibited by local or national law. Users must determine legality of sales in their location.
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. For specific warning statements, see Section 7.
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.
General Information
Buy Standard
Standards Content (Sample)
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.
Designation: D943 − 20 BS 2000-280:1999
Standard Test Method for
1
Oxidation Characteristics of Inhibited Mineral Oils
This standard is issued under the fixed designation D943; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
1.1 This test method covers the evaluation of the oxidation
Barriers to Trade (TBT) Committee.
stability of inhibited steam-turbine oils in the presence of
oxygen, water, and copper and iron metals at an elevated
2. Referenced Documents
temperature. This test method is limited to a maximum testing
2
time of 10 000 h.This test method is also used for testing other 2.1 ASTM Standards:
oils,suchashydraulicoilsandcirculatingoilshavingaspecific A510 Specification for General Requirements forWire Rods
gravitylessthanthatofwaterandcontainingrustandoxidation and Coarse Round Wire, Carbon Steel (Metric) A0510_
inhibitors. A0510M
B1 Specification for Hard-Drawn Copper Wire
1.2 The values stated in SI units are to be regarded as
D664 Test Method for Acid Number of Petroleum Products
standard. No other units of measurement are included in this
by Potentiometric Titration
standard.
D1193 Specification for Reagent Water
1.2.1 Exception—The values in parentheses in the figures
D3244 Practice for Utilization of Test Data to Determine
are provided for information for those using old equipment
Conformance with Specifications
based on non-SI units.
D3339 Test Method forAcid Number of Petroleum Products
1.3 WARNING—Mercury has been designated by many
by Semi-Micro Color Indicator Titration
regulatory agencies as a hazardous substance that can cause
D4057 Practice for Manual Sampling of Petroleum and
serious medical issues. Mercury, or its vapor, has been dem-
Petroleum Products
onstrated to be hazardous to health and corrosive to materials.
D4310 Test Method for Determination of Sludging and
Use Caution when handling mercury and mercury-containing
Corrosion Tendencies of Inhibited Mineral Oils
products. See the applicable product Safety Data Sheet (SDS)
D5770 Test Method for Semiquantitative Micro Determina-
for additional information. The potential exists that selling
tion of Acid Number of Lubricating Oils During Oxida-
mercury or mercury-containing products, or both, is prohibited
tion Testing
by local or national law. Users must determine legality of sales
E1 Specification for ASTM Liquid-in-Glass Thermometers
in their location.
E2877 Guide for Digital Contact Thermometers
1.4 This standard does not purport to address all of the 3
2.2 Energy Institute Standards:
safety concerns, if any, associated with its use. It is the
Specifications for IP Standard Thermometers
responsibility of the user of this standard to establish appro-
4
2.3 British Standard:
priate safety, health, and environmental practices and deter-
BS 1829
mine the applicability of regulatory limitations prior to use.
For specific warning statements, see Section 7.
3. Terminology
1.5 This international standard was developed in accor-
dance with internationally recognized principles on standard- 3.1 Definitions:
ization established in the Decision on Principles for the
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
1
This test method is under the jurisdiction of ASTM Committee D02 on contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Standards volume information, refer to the standard’s Document Summary page on
Subcommittee D02.09.0C on Oxidation of Turbine Oils. the ASTM website.
3
CurrenteditionapprovedJune1,2020.PublishedJuly2020.Originallyapproved Available from Energy Institute, 61 New Cavendish St., London, W1G 7AR,
in 1947. Last previous edition approved in 2019 as D943 – 19. DOI: 10.1520/ U.K., http://www.energyinst.org.
4
D0943-20. Available from British Standards Institution (BSI), 389 Chiswick High Rd.,
In 1976, this test method ceased to be a joint ASTM-IP standard. London W4 4AL, U.K., http://www.bsigroup.com.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 -----
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D943 − 19 D943 − 20 BS 2000-280:1999
Standard Test Method for
1
Oxidation Characteristics of Inhibited Mineral Oils
This standard is issued under the fixed designation D943; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
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 Exception—The values in parentheses in the figures are provided for information for those using old equipment based on
non-SI units.
1.3 WARNING—Mercury has been designated by many regulatory agencies as a hazardous substance that can cause serious
medical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Use Caution
when handling mercury and mercury-containing products. See the applicable product Safety Data Sheet (SDS) for additional
information. The potential exists that selling mercury or mercury-containing products, or both, is prohibited by local or national
law. Users must determine legality of sales in their location.
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. For specific warning statements, see Section 7.
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
2
2.1 ASTM Standards:
A510 Specification for General Requirements for Wire Rods and Coarse Round Wire, Carbon Steel (Metric) A0510_A0510M
B1 Specification for Hard-Drawn Copper Wire
D664 Test Method for Acid Number of Petroleum Products by Potentiometric Titration
D1193 Specification for Reagent Water
D3244 Practice for Utilization of Test Data to Determine Conformance with Specifications
D3339 Test Method for Acid Number of Petroleum Products by Semi-Micro Color Indicator Titration
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
D4310 Test Method for Determination of Sludging and Corrosion Tendencies of Inhibited Mineral Oils
D5770 Test Method for Semiquantitative Micro Determination of Acid Number of Lubricating Oils During Oxidation Testing
E1 Specification for ASTM Liquid-in-Glass Thermometers
E2877 Guide for Digital Contact Thermometers
3
2.2 Energy Institute Standards:
Specifications for IP Standard Thermometers
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.09.0C on Oxidation of Turbine Oils.
Current edition approved Dec. 1, 2019June 1, 2020. Published January 2020July 2020. Originally approved in 1947. Last previous edition approved in 20182019 as
D943 – 18.D943 – 19. DOI: 10.1520/D0943-19.10.1520/D0943-20.
In 1976, this test method ceased to be a joint ASTM-IP standard.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from Energy Institute, 61 New Cavendish St., London, W1G 7AR, U.K., http://www.energyinst.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
--------------------
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.