ASTM D5969-05
(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
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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AnAmerican National Standard
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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope* 3.1.1 corrosion—the chemical or electrochemical reaction
between a material, usually a metal, and its environment that
1.1 This test method covers the determination of the
produces a deterioration of the material and its properties.
corrosion-preventive properties of greases using grease-
3.1.1.1 Discussion—In this test method, corrosion is mani-
lubricated tapered roller bearings exposed to various concen-
fested by red rust or black stains on the bearing race. Stains,
trations of dilute synthetic sea water stored under wet condi-
through which the underlying metal surface is still visible, are
tions. It is based on Test Method D 1743, which is practiced
not considered corrosion in Test Method D 5969 and shall be
using a similar procedure and distilled water. The reported
ignored. D1743
result is a pass or fail rating as determined by at least two of
three bearings.
4. Summary of Test Method
1.2 Apparatus Dimensions—The values stated in inch-
4.1 New, cleaned, and lubricated bearings are run under a
pound units are to be regarded as standard.The values given in
light thrust load for 60 6 3 s to distribute the lubricant in a
parentheses are mathematical conversions to SI units that are
pattern that might be found in service. The bearings are
provided for information only and are not considered standard.
exposedtoasolutionofsyntheticseawateratsomepercentage
1.3 All Other Values—The values stated in SI units are to be
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in distilled water, then stored for 24 6 ⁄2hat52 6 1°C and
regarded as standard. No other units of measurement are
100 % relative humidity. After cleaning, the bearing cups are
included in this standard.
examined for evidence of corrosion.
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
5. Significance and Use
responsibility of the user of this standard to establish appro-
5.1 This test method differentiates the relative corrosion-
priate safety and health practices and determine the applica-
preventive capabilities of lubricating greases under the test
bility of regulatory limitations prior to use.
conditions.
2. Referenced Documents
6. Apparatus
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2.1 ASTM Standards:
6.1 Bearings, Timken bearing cone and roller assembly
D 665 Test Method for Rust-Preventing Characteristics of
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LM11949 and cup LM11910.
Inhibited Mineral Oil in the Presence of Water
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6.2 Motor, 1750-rpm (approximate) speed, ⁄15 hp (min).
D 1193 Specification for Reagent Water
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6.3 Bearing Holder, (see Fig. 1) consists of a 1 6 0.01-kg
D 1743 Test Method for Determining Corrosion Preventive
mass, upper and lower plastic collars for the bearing cone
Properties of Lubricating Greases
(PartsAand B), a metal screw, a plastic collar for the cup (Part
3. Terminology C), and a plastic jar with a screw cap.
6.4 Plastic Test Jar, as shown in Fig. 2.
3.1 Definitions of Terms Specific to This Standard:
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6.5 Run-in Stand, as shown in Fig. 3.
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6.6 Spindle/Thrust Loading Device, as shown in Fig. 4.
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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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D5969–05
KEY DESCRIPTION QUANTITY
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2 O RING
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