ASTM D6557-08
(Test Method)Standard Test Method for Evaluation of Rust Preventive Characteristics of Automotive Engine Oils
Standard Test Method for Evaluation of Rust Preventive Characteristics of Automotive Engine Oils
SIGNIFICANCE AND USE
This bench test method was designed as a replacement for Test Method D 5844. Test Method D 5844 was designed to measure the ability of an engine oil to protect valve train components against rusting or corrosion under low temperature, short-trip service, and was correlated with vehicles in that type of service prior to 1978.
Correlation between these two test methods has been demonstrated for most, but not all, of the test oils evaluated.
SCOPE
1.1 This test method covers a Ball Rust Test (BRT) procedure for evaluating the anti-rust ability of fluid lubricants. The procedure is particularly suitable for the evaluation of automotive engine oils under low-temperature, acidic service conditions.
1.2 Information Letters are published occasionally by the ASTM Test Monitoring Center (TMC) to update this test method. Copies of these letters can be obtained by writing the center.
1.3 The values stated in SI units are provided for all parameters except where there is no direct equivalent, such as the units for screw threads, national pipe threads/diameters, and tubing size.
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. See 7.1.1-7.1.3 and 8.2.1.1.
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An American National Standard
Designation:D6557–08
Standard Test Method for
Evaluation of Rust Preventive Characteristics of Automotive
1
Engine Oils
This standard is issued under the fixed designation D 6557; 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 D 5844 Test Method for Evaluation of Automotive Engine
4
Oils for Inhibition of Rusting (Sequence IID)
1.1 This test method covers a Ball Rust Test (BRT) proce-
D 6894 Test Method for Evaluation of Aeration Resistance
dure for evaluating the anti-rust ability of fluid lubricants. The
of Engine Oils in Direct-Injected Turbocharged Automo-
procedure is particularly suitable for the evaluation of automo-
tive Diesel Engine
tive engine oils under low-temperature, acidic service condi-
tions.
3. Terminology
1.2 Information Letters are published occasionally by the
2 3.1 Definitions:
ASTM Test Monitoring Center (TMC) to update this test
3.1.1 calibrate, v—to determine the indication or output of
method. Copies of these letters can be obtained by writing the
a measuring device or a given engine with respect to a
center.
standard. D6894
1.3 The values stated in SI units are provided for all
3.1.2 corrosion, n—the chemical or electrochemical reac-
parameters except where there is no direct equivalent, such as
tion between a material, usually a metal surface, and its
the units for screw threads, national pipe threads/diameters,
environment that can produce a deterioration of the material
and tubing size.
and its properties. D5844
1.4 This standard does not purport to address all of the
3.1.3 non-reference oil, n—any oil other than a reference
safety concerns, if any, associated with its use. It is the
oil, such as a research formulation, commercial oil, or candi-
responsibility of the user of this standard to establish appro-
date oil. D5844
priate safety and health practices and determine the applica-
3.1.4 reference oil, n—an oil of known performance char-
bility of regulatory limitations prior to use. See 7.1.1-7.1.3 and
acteristics, used as a basis for comparison. D5844
8.2.1.1.
3.1.4.1 Discussion—Reference oils are used to calibrate
2. Referenced Documents testing facilities, to compare the performance of other oils, or
3
to evaluate other materials (such as seals) that interact with
2.1 ASTM Standards:
oils.
3.1.5 rust, n—of ferrous alloys, a corrosion product consist-
1 ing primarily of hydrated iron oxides. D5844
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee 3.1.6 test oil, n—any oil subjected to evaluation in an
D02.B0.01 on Passenger Car Engine Oils.
established procedure.
Current edition approved Oct. 15, 2008. Published November 2008. Originally
3.2 Definitions of Terms Specific to This Standard:
approved in 2000. Last previous edition approved in 2004 as D 6557–04.
2
3.2.1 average gray value (AGV), n—measurement of
Until the next revision of this test method, the ASTM Test Monitoring Center
will update changes in the test method by means of information letters. Information
brightnessunitsontestspecimens,indicatingthedegreeofrust
lettersmaybeobtainedfromtheASTMTestMonitoringCenter,6555PennAvenue,
protection.
Pittsburgh, PA 15206-4489. This test method is supplemented by Information
7
3.2.2 specimen, n—a carbon steel ball, ⁄32 in. (AISI 1040).
Letters and Memoranda issued by the ASTM TMC. This edition incorporates
revisions in all Information Letters through No. 07–01.
3
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
4
Standards volume information, refer to the standard’s Document Summary page on Withdrawn. The last approved version of this historical standard is referenced
the ASTM website. on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
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D6557–08
4. Summary of Test Method
4.1 Multiple test tubes, each containing test oil and a
specimen, are placed in a test tube rack, which is attached to a
mechanical shaker. The shaker speed and temperature are
controlled.
4.2 Airandanacidicsolutionarecontinuouslyfedintoeach
test tube over an 18 h period to create a corrosive environment.
4.3 The specimens are then removed, rinsed, and analyzed
by an optical imaging system designed to quantify the antirust
capability of each test oil.
5. Significance and Use
5.1 This bench test method was designed as a replacem
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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.
An American National Standard
Designation:D6557–04 Designation:D6557–08
Standard Test Method for
Evaluation of Rust Preventive Characteristics of Automotive
1
Engine Oils
This standard is issued under the fixed designation D 6557; 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
1.1 This test method covers a Ball Rust Test (BRT) procedure for evaluating the anti-rust ability of fluid lubricants. The
procedure is particularly suitable for the evaluation of automotive engine oils under low-temperature, acidic service conditions.
2
1.2 Information Letters are published occasionally by the ASTM Test Monitoring Center (TMC) to update this test method.
Copies of these letters can be obtained by writing the center.
1.3The values stated in either SI units or in other units shall be regarded separately as standard.The values stated in each system
may not be exact equivalents; therefore, use each system independently of the other, without combining values in any way.
1.3 The values stated in SI units are provided for all parameters except where there is no direct equivalent, such as the units
for screw threads, national pipe threads/diameters, and tubing size.
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. See 7.1.1-7.1.3 and 8.2.1.1.
2. Referenced Documents
3
2.1 ASTM Standards:
D 5844 Test Method for Evaluation of Automotive Engine Oils for Inhibition of Rusting (Sequence IID)
E344Terminology Relating to Thermometry and Hydrometry
D 6894 Test Method for Evaluation ofAeration Resistance of Engine Oils in Direct-Injected TurbochargedAutomotive Diesel
Engine
3. Terminology
3.1 Definitions:
3.1.1 calibrate, v—to determine the indication or output of a measuring device or a given engine with respect to a standard.
D6894
3.1.2 corrosion, n—the chemical or electrochemical reaction between a material, usually a metal surface, and its environment
that can produce a deterioration of the material and its properties. D5844
3.1.3 non-reference oil, n—any oil other than a reference oil, such as a research formulation, commercial oil, or candidate oil.
D5844
3.1.4 reference oil, n—an oil of known performance characteristics, used as a basis for comparison. D5844
3.1.4.1 Discussion—Reference oils are used to calibrate testing facilities, to compare the performance of other oils, or to
evaluate other materials (such as seals) that interact with oils.
3.1.5 rust, n—of ferrous alloys, a corrosion product consisting primarily of hydrated iron oxides. D5844
3.1.6 test oil, n—any oil subjected to evaluation in an established procedure.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 average gray value (AGV), n—measurement of brightness units on test specimens, indicating the degree of rust
protection.
1
This test method is under the jurisdiction ofASTM Committee D02 on Petroleum Products and Lubricants and is the direct responsibility of Subcommittee D02.B0.01
on Automotive Lubricants. Passenger Car Engine Oils.
Current edition approved May 1, 2004.Oct. 15, 2008. Published June 2004.November 2008. Originally approved in 2000. Last previous edition approved in 20032004
as D 6557–034.
2
Until the next revision of this test method, theASTM Test Monitoring Center will update changes in the test method by means of information letters. Information letters
may be obtained from the ASTM Test Monitoring Center, 6555 Penn Avenue, Pittsburgh, PA 15206-4489. This test method is supplemented by Information Letters and
Memoranda issued by the ASTM TMC. This edition incorporates revisions in all Information Letters through No. 03–02. 07–01.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D6557–08
7
3.2.2 specimen, n—a carbon steel ball, ⁄32 in. (AISI 1040).
...
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