ASTM D1743-22

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: D1743 − 22
Standard Test Method for
Determining Corrosion Preventive Properties of Lubricating
1
Greases
This standard is issued under the fixed designation D1743; 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* D5969 Test Method for Corrosion-Preventive Properties of
Lubricating Greases in Presence of Dilute Synthetic Sea
1.1 This test method covers the determination of the corro-
Water Environments
sion preventive properties of greases using grease-lubricated
tapered roller bearings stored under wet conditions. This test
3. Terminology
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method is based on CRC Technique L 41 that shows correla-
3.1 Definitions of Terms Specific to This Standard:
tions between laboratory results and service for grease lubri-
3.1.1 corrosion, n—the chemical or electrochemical reac-
cated aircraft wheel bearings.
tion between a material, usually a metal, and its environment
1.2 Apparatus Dimensions—The values stated in SI units
that produces a deterioration of the material and its properties.
are to be regarded as standard.The values given in parentheses
3.1.1.1 Discussion—In this test method, corrosion is mani-
are for information only.
fested by red rust or black stains on the bearing race. Stains,
through which the underlying metal surface is still visible, are
1.3 All Other Values—The values stated in SI units are to be
not considered corrosion in Test Method D1743 and shall be
regarded as standard. No other units of measurement are
ignored.
included in this standard.
1.4 This standard does not purport to address all of the
4. Summary of Test Method
safety concerns, if any, associated with its use. It is the
4.1 New, cleaned, and lubricated bearings are run under a
responsibility of the user of this standard to establish appro-
light thrust load for 60 s 6 3 s to distribute the lubricant in a
priate safety, health, and environmental practices and deter-
pattern that might be found in service. The bearings are
mine the applicability of regulatory limitations prior to use.
exposed to water, then stored for 48 h 6 0.5 h at 52 °C 61°C
1.5 This international standard was developed in accor-
(125 °F 6 2 °F) and 100 % relative humidity. After cleaning,
dance with internationally recognized principles on standard-
the bearing cups are examined for evidence of corrosion.
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
5. Significance and Use
mendations issued by the World Trade Organization Technical
5.1 This test method differentiates the relative corrosion-
Barriers to Trade (TBT) Committee.
preventive capabilities of lubricating greases under the condi-
tions of the test.
2. Referenced Documents
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6. Apparatus
2.1 ASTM Standards:
D1193 Specification for Reagent Water
6.1 Bearings—Timken bearing cone and roller assembly
4,5
LM11949, and cup LM11910.
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1 6.2 Motor, 1750 r⁄min 6 50 r⁄min speed, ⁄15 hp (min).
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
6.3 Bearing Holder, consists of a 1 kg 6 0.010 kg weight,
Subcommittee D02.G0.06 on Functional Tests - Contamination.
upper and lower plastic collars for the bearing cone (Parts A
Current edition approved May 1, 2022. Published May 2022. Originally
approved in 1960. Last previous edition approved in 2021 as D1743 – 21. DOI:
and B), a metal screw, and a plastic collar for the cup (Part C).
10.1520/D1743-22.
(See Fig. 1.)
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“Research Technique for Determining Rust-Preventive Properties of Lubricat-
ing Greases in the Presence of Free Water,” L-41-957, undated, Coordinating
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Research Council, Inc., 219 Perimeter Center Parkway, Atlanta, GA 30346. The sole source of supply of the apparatus known to the committee at this time
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or is The Timken Co., Canton, OH 44706.
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contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM If you are aware of alternative suppliers, please provide this information to
Standards volume information, refer to the standard’s Document Summary page on ASTM International Headquarters. Your comments will receive careful consider-
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the ASTM website. ation at a meeting of the responsible technical committee, which you may attend.
*A Sum
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