ASTM D5969-05e2
(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
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 D 1743, 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 and health practices and determine the applicability of regulatory limitations prior to use.
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An American National Standard
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Designation: D 5969 – 05
Standard Test Method for
Corrosion-Preventive Properties of Lubricating Greases in
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Presence of Dilute Synthetic Sea Water Environments
This standard is issued under the fixed designation D 5969; 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.
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´ NOTE—Corrected 6.3 and added inadvertently omitted items to the Summary of Changes editorially in August 2005.
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Note—Editorially replaced Stoddard solvent with mineral spirits throughout to match approved change to 7.5 in December
2005.
1. Scope* 3.1.1.1 Discussion—In this test method, corrosion is mani-
fested by red rust or black stains on the bearing race. Stains,
1.1 This test method covers the determination of the
through which the underlying metal surface is still visible, are
corrosion-preventive properties of greases using grease-
not considered corrosion in Test Method D 5969 and shall be
lubricated tapered roller bearings exposed to various concen-
ignored. D1743
trations of dilute synthetic sea water stored under wet condi-
tions. It is based on Test Method D 1743, which is practiced
4. Summary of Test Method
using a similar procedure and distilled water. The reported
4.1 New, cleaned, and lubricated bearings are run under a
result is a pass or fail rating as determined by at least two of
light thrust load for 60 6 3 s to distribute the lubricant in a
three bearings.
pattern that might be found in service. The bearings are
1.2 Apparatus Dimensions—
exposedtoasolutionofsyntheticseawateratsomepercentage
1.3 All Other Values—
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in distilled water, then stored for 24 6 ⁄2hat52 6 1°C and
1.4 This standard does not purport to address all of the
100 % relative humidity. After cleaning, the bearing cups are
safety concerns, if any, associated with its use. It is the
examined for evidence of corrosion.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
5. Significance and Use
bility of regulatory limitations prior to use.
5.1 This test method differentiates the relative corrosion-
2. Referenced Documents preventive capabilities of lubricating greases under the test
2 conditions.
2.1 ASTM Standards:
D 665 Test Method for Rust-Preventing Characteristics of
6. Apparatus
Inhibited Mineral Oil in the Presence of Water
6.1 Bearings, Timken bearing cone and roller assembly
D 1193 Specification for Reagent Water
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LM11949 and cup LM11910.
D 1743 Test Method for Determining Corrosion Preventive
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6.2 Motor, 1750-rpm (approximate) speed, ⁄15 hp (min).
Properties of Lubricating Greases
6.3 Bearing Holder, (see Fig. 1) consists of a 1 6 0.01-kg
mass, upper and lower plastic collars for the bearing cone
3. Terminology
(PartsAand B), a metal screw, and a plastic collar for the cup
3.1 Definitions of Terms Specific to This Standard:
(Part C).
3.1.1 corrosion—the chemical or electrochemical reaction
6.4 Plastic Test Jar, as shown in Fig. 2.
between a material, usually a metal, and its environment that
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6.5 Run-in Stand, as shown in Fig. 3.
produces a deterioration of the material and its properties.
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6.6 Spindle/Thrust Loading Device, as shown in Fig. 4.
6.7 Mechanical Grease Packer, as shown in Fig. 5.
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This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
D02.G0 on Lubricating Grease.
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CurrenteditionapprovedJune1,2005.PublishedJuly2005.Originallyapproved Manufactured by the Timken Co., Canton, OH 44706.
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in 1996. Last previous edition approved in 2002 as D 5969–02. The sole source of supply of the apparatus known to the committee at this time
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Standards volume information, refer to the standard’s Document Summary page on Headquarters.Your comments will receive careful consideration at a meeting of the
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the ASTM website. responsible technical committee , which you may attend.
*A Summary of Changes section appears at the end of this standard.
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