ASTM D5969-21
(Test Method)Standard Test Method for Corrosion-Preventive Properties of Lubricating Greases in Presence of Dilute Synthetic Sea Water Environments
Standard Test Method for Corrosion-Preventive Properties of Lubricating Greases in Presence of Dilute Synthetic Sea Water Environments
SIGNIFICANCE AND USE
5.1 This test method differentiates the relative corrosion-preventive capabilities of lubricating greases under the test conditions.
SCOPE
1.1 This test method covers the determination of the corrosion-preventive properties of greases using grease-lubricated tapered roller bearings exposed to various concentrations of dilute synthetic sea water stored under wet conditions. It is based on Test Method D1743, which is practiced using a similar procedure and distilled water. The reported result is a pass or fail rating as determined by at least two of three bearings.
1.2 Apparatus Dimensions—The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 All Other Values—The values stated in SI units are to be regarded as 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.
General Information
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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: D5969 − 21
Standard Test Method for
Corrosion-Preventive Properties of Lubricating Greases in
1
Presence of Dilute Synthetic Sea Water Environments
This standard is issued under the fixed designation D5969; 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.
1. Scope* D1193 Specification for Reagent Water
D1743 Test Method for Determining Corrosion Preventive
1.1 This test method covers the determination of the
Properties of Lubricating Greases
corrosion-preventive properties of greases using grease-
lubricated tapered roller bearings exposed to various concen-
3. Terminology
trations of dilute synthetic sea water stored under wet condi-
3.1 Definitions of Terms Specific to This Standard:
tions. It is based on Test Method D1743, which is practiced
3.1.1 corrosion, n—the chemical or electrochemical reac-
using a similar procedure and distilled water. The reported
tion between a material, usually a metal, and its environment
result is a pass or fail rating as determined by at least two of
that produces a deterioration of the material and its properties.
three bearings.
3.1.1.1 Discussion—In this test method, corrosion is mani-
1.2 Apparatus Dimensions—The values stated in inch-
fested by red rust or black stains on the bearing race. Stains,
pound units are to be regarded as standard.The values given in
through which the underlying metal surface is still visible, are
parentheses are mathematical conversions to SI units that are
not considered corrosion in Test Method D5969 and shall be
provided for information only and are not considered standard.
ignored. D1743
1.3 All Other Values—The values stated in SI units are to be
regarded as standard. No other units of measurement are
4. Summary of Test Method
included in this standard.
4.1 New, cleaned, and lubricated bearings are run under a
1.4 This standard does not purport to address all of the
light thrust load for 60 s 6 3 s to distribute the lubricant in a
safety concerns, if any, associated with its use. It is the
pattern that might be found in service. The bearings are
responsibility of the user of this standard to establish appro-
exposedtoasolutionofsyntheticseawateratsomepercentage
1
priate safety, health, and environmental practices and deter-
in distilled water, then stored for 24 h 6 ⁄2hat52°C 61°C
mine the applicability of regulatory limitations prior to use.
and 100 % relative humidity. After cleaning, the bearing cups
1.5 This international standard was developed in accor-
are examined for evidence of corrosion.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the 5. Significance and Use
Development of International Standards, Guides and Recom-
5.1 This test method differentiates the relative corrosion-
mendations issued by the World Trade Organization Technical
preventive capabilities of lubricating greases under the test
Barriers to Trade (TBT) Committee.
conditions.
2. Referenced Documents
6. Apparatus
2
2.1 ASTM Standards:
6.1 Bearings, Timken bearing cone and roller assembly
D665 Test Method for Rust-Preventing Characteristics of
3
LM11949 and cup LM11910.
Inhibited Mineral Oil in the Presence of Water
1
6.2 Motor, 1750 r⁄min (approximate) speed, ⁄15 hp (min).
6.3 Bearing Holder,(seeFig.1)consistsofa1 kg 60.01 kg
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 mass, upper and lower plastic collars for the bearing cone
Subcommittee D02.G0.06 on Functional Tests - Contamination.
(PartsAand B), a metal screw, and a plastic collar for the cup
Current edition approved Dec. 1, 2021. Published December 2021. Originally
(Part C).
approved in 1996. Last previous edition approved in 2016 as D5969 – 11 (2016).
DOI: 10.1520/D5969-21.
6.4 Plastic Test Jar, as shown in Fig. 2.
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
3
the ASTM website. Manufactured by the Timken Co., Canton, OH 44706.
*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 ----------------------
D5969 − 21
KE
...
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: D5969 − 11 (Reapproved 2016) D5969 − 21
Standard Test Method for
Corrosion-Preventive Properties of Lubricating Greases in
1
Presence of Dilute Synthetic Sea Water Environments
This standard is issued under the fixed designation D5969; 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.
1. Scope Scope*
1.1 This test method covers the determination of the corrosion-preventive properties of greases using grease-lubricated tapered
roller bearings exposed to various concentrations of dilute synthetic sea water stored under wet conditions. It is based on Test
Method D1743, which is practiced using a similar procedure and distilled water. The reported result is a pass or fail rating as
determined by at least two of three bearings.
1.2 Apparatus Dimensions—The values stated in inch-pound units are to be regarded as standard. The values given in parentheses
are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 All Other Values—The values stated in SI units are to be regarded as 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 safety, health, and healthenvironmental 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
2
2.1 ASTM Standards:
D665 Test Method for Rust-Preventing Characteristics of Inhibited Mineral Oil in the Presence of Water
D1193 Specification for Reagent Water
D1743 Test Method for Determining Corrosion Preventive Properties of Lubricating Greases
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 corrosion—corrosion, n—the chemical or electrochemical reaction between a material, usually a metal, and its environment
that produces a deterioration of the material and its properties.
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.G0.06 on Functional Tests - Contamination.
Current edition approved Oct. 1, 2016Dec. 1, 2021. Published November 2016December 2021. Originally approved in 1996. Last previous edition approved in 20112016
ɛ1
as D5969 – 11 (2016). . DOI: 10.1520/D5969-11R16. 10.1520/D5969-21.
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.
*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 ----------------------
D5969 − 21
3.1.1.1 Discussion—
In this test method, corrosion is manifested by red rust or black stains on the bearing race. Stains, through which the underlying
metal surface is still visible, are not considered corrosion in Test Method D5969 and shall be ignored. D1743
4. Summary of Test Method
4.1 New, cleaned, and lubricated bearings are run under a light thrust load for 60 s 6 3 s to distribute the lubricant in a pattern
that might be found in service. The bearings are exposed to a solution of synthetic sea water at some percentage in distilled water,
1
then stored for 24 h 6 ⁄2 h at 52 °C 6 1 °C and 100 % relative humidity. After cleaning, the bearing cups are examined for
evidence of corrosion.
5. Significance and Use
5.1 This test method differentiates the relative corrosion-preventive capabilities of lubricating greases under the test conditions.
6. Apparatus
3
6.1 Bearings, Timken bearing cone and roller assembly LM11949 and cup LM11910.
1
6.2 Motor, 1750 r ⁄min (approximate) speed, ⁄15 hp (min).
6.3 Bearing Holder, (see Fig. 1) consists of a 1
...
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