ASTM D5969-02
(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 The values stated in acceptable inch-pound units for the apparatus dimensions are to be regarded as standard, and the SI conversions are provided for information only. All other values stated in acceptable SI units are standard.
1.3 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 – 02
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 * not considered corrosion in Test Method D 5969 and shall be
ignored. D1743
1.1 This test method covers the determination of the
corrosion-preventive properties of greases using grease-
4. Summary of Test Method
lubricated tapered roller bearings exposed to various concen-
4.1 New, cleaned, and lubricated bearings are run under a
trations of dilute synthetic sea water stored under wet condi-
light thrust load for 60 6 3 s to distribute the lubricant in a
tions. It is based on Test Method D 1743, which is practiced
pattern that might be found in service. The bearings are
using a similar procedure and distilled water. The reported
exposed to a solution of synthetic sea water at some percentage
result is a pass or fail rating as determined by at least two of
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in distilled water, then stored for 24 6 ⁄2hat52 6 1°C and
three bearings.
100 % relative humidity. After cleaning, the bearing cups are
1.2 The values stated in acceptable inch-pound units for the
examined for evidence of corrosion.
apparatusdimensionsaretoberegardedasstandard,andtheSI
conversions are provided for information only.All other values
5. Significance and Use
stated in acceptable SI units are standard.
5.1 This test method differentiates the relative corrosion-
1.3 This standard does not purport to address all of the
preventive capabilities of lubricating greases under the test
safety concerns, if any, associated with its use. It is the
conditions.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
6. Apparatus
bility of regulatory limitations prior to use.
6.1 Bearings, Timken bearing cone and roller assembly
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LM11949 and cup LM11910.
2. Referenced Documents
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6.2 Motor, 1750-rpm (approximate) speed, ⁄15 hp (min).
2.1 ASTM Standards:
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6.3 Bearing Holder, (see Fig. 1) consists of a 1 6 0.01-kg
D 665 Test Method for Rust-Preventing Characteristics of
2 mass, upper and lower plastic collars for the bearing cone
Inhibited Mineral Oil in the Presence of Water
(PartsAand B), a metal screw, a plastic collar for the cup (Part
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D 1193 Specification for Reagent Water
C), and a plastic jar with a screw cap.
D 1743 Test Method for Determining Corrosion Preventive
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6.4 Run-in Stand, as shown in Fig. 2.
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Properties of Lubricating Greases
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6.5 Spindle/Thrust Loading Device, as shown in Fig. 3.
6.6 Mechanical Grease Packer, as shown in Fig. 4.
3. Terminology
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6.7 Pliers, as shown in Fig. 5.
3.1 Definitions of Terms Specific to This Standard:
6.8 Syringe, of at least 100 6 5 mL volume and with a
3.1.1 corrosion—the chemical or electrochemical reaction
needle of at least 16 gage and a minimum length of 100 mm (4
between a material, usually a metal, and its environment that
in.).
produces a deterioration of the material and its properties.
6.9 Timer, capable of measuring a 60 6 3-s interval.
3.1.1.1 Discussion—In this test method, corrosion is mani-
6.10 Oven, a laboratory oven, essentially free of vibration,
fested by red rust or black stains on the bearing race. Stains,
capable of maintaining 52 6 1°C.
through which the underlying metal surface is still visible, are
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Manufactured by the Timken Co., Canton, OH 44706.
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This test method is under the jurisdiction of ASTM Committee D02 on The sole source of supply of the apparatus known to the committee at this time
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee is Falex Corp., 1020 Airpark Drive, Sugar Grove, IL, 60554. If you are aware of
D02.G0 on Lubricating Grease. alternative suppliers, please provide this information to ASTM International
Current edition approved Nov. 10, 2002. Published February 2003. Originally Headquarters.Your comments will receive careful consideration at a meeting of the
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approved in 1996. Last previous edition approved in 1996 as D 5969–96. responsible technical committee , which you may attend.
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Annual Book of ASTM Standards, Vol 05.01. AWaldes Truarc Plier No. 4, available from Truarc Co., or similar, modified as
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Annual Book of ASTM Standards, Vol 11.01. in Fig. 5.
*A Summary of Changes section appears at the end of this standard.
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