ASTM D5001-06
(Test Method)Standard Test Method for Measurement of Lubricity of Aviation Turbine Fuels by the Ball-on-Cylinder Lubricity Evaluator (BOCLE)
Standard Test Method for Measurement of Lubricity of Aviation Turbine Fuels by the Ball-on-Cylinder Lubricity Evaluator (BOCLE)
SIGNIFICANCE AND USE
Wear due to excessive friction resulting in shortened life of engine components such as fuel pumps and fuel controls has sometimes been ascribed to lack of lubricity in an aviation fuel.
The relationship of test results to aviation fuel system component distress due to wear has been demonstrated for some fuel/hardware combinations where boundary lubrication is a factor in the operation of the component.
The wear scar generated in the ball-on-cylinder lubricity evaluator (BOCLE) test is sensitive to contamination of the fluids and test materials, the presence of oxygen and water in the atmosphere, and the temperature of the test. Lubricity measurements are also sensitive to trace materials acquired during sampling and storage. Containers specified in Practice D 4306 shall be used.
The BOCLE test method may not directly reflect operating conditions of engine hardware. For example, some fuels that contain a high content of certain sulfur compounds may give anomalous test results.
SCOPE
1.1 This test method covers assessment of the wear aspects of the boundary lubrication properties of aviation turbine fuels on rubbing steel surfaces.
1.2 &si-value;
This standard does not purport to address 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. Specific warning statements are given in Section 7 and Annex A1.
General Information
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Standards Content (Sample)
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An American National Standard
Designation:D5001–06
Standard Test Method for
Measurement of Lubricity of Aviation Turbine Fuels by the
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Ball-on-Cylinder Lubricity Evaluator (BOCLE)
This standard is issued under the fixed designation D 5001; 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* 2.5 Society of Automotive Engineers Standard:
6
SAE 8720 Steel
1.1 This test method covers assessment of the wear aspects
of the boundary lubrication properties of aviation turbine fuels
3. Terminology
on rubbing steel surfaces.
3.1 Definitions of Terms Specific to This Standard:
1.2 The values stated in SI units are to be regarded as the
3.1.1 cylinder—the test ring and mandrel assembly.
standard. The values given in parentheses are for information
3.1.2 lubricity—a general term used to describe the bound-
only.
ary lubrication properties of a fluid. In this test method, the
1.3 This standard does not purport to address the safety
lubricity of a fluid is defined in terms of a wear scar, in
concerns, if any, associated with its use. It is the responsibility
millimetres, produced on a stationary ball from contact with
of the user of this standard to establish appropriate safety and
the fluid-wetted rotating cylinder operating under closely
health practices and determine the applicability of regulatory
defined and controlled conditions.
limitations prior to use. Specific warning statements are given
in Section 7 and Annex A1.
4. Summary of Test Method
2. Referenced Documents 4.1 The fluid under test is placed in a test reservoir in which
2 atmospheric air is maintained at 10 % relative humidity. A
2.1 ASTM Standards:
non-rotatingsteelballisheldinaverticallymountedchuckand
D 4306 Practice for Aviation Fuel Sample Containers for
forced against an axially mounted steel ring with an applied
Tests Affected by Trace Contamination
load. The test cylinder is rotated at a fixed speed while being
2.2 Military Specification:
partially immersed in the fluid reservoir. This maintains the
MIL-I-25017, Inhibitor, Corrosion/Lubricity Improver, Fuel
3 cylinder in a wet condition and continuously transports the test
Soluble
fluid to the ball/cylinder interface. The wear scar generated on
2.3 American Iron and Steel Institute Standard:
4 the test ball is a measure of the fluid lubricating properties. For
AISI E-52100 Chromium Alloy Steel
wear scar diameter (WSD) calibration and standardization, see
2.4 American National Standards Institute Standard:
5 Section 9.
ANSI B3.12, Metal Balls
5. Significance and Use
5.1 Wear due to excessive friction resulting in shortened life
1
This test method is under the jurisdiction of ASTM Committee D02 on
of engine components such as fuel pumps and fuel controls has
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
sometimesbeenascribedtolackoflubricityinanaviationfuel.
D02.J0.04 on Additives and Electrical Properties.
5.2 The relationship of test results to aviation fuel system
Current edition approved Dec. 1, 2006. Published February 2007. Originally
approved in 1989. Last previous edition approved in 2003 as D 5001–03. component distress due to wear has been demonstrated for
This test method was developed by the Coordinating Research Council and is a
some fuel/hardware combinations where boundary lubrication
part of their report No. 560.
is a factor in the operation of the component.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.3 Thewearscargeneratedintheball-on-cylinderlubricity
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
evaluator (BOCLE) test is sensitive to contamination of the
the ASTM website.
fluids and test materials, the presence of oxygen and water in
3
Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
the atmosphere, and the temperature of the test. Lubricity
Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098
4
Available from American Iron and Steel Institute (AISI), 1101 17th St., NW,
Suite 1300, Washington, DC 20036.
5 6
Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St., Available from Society of Automotive Engineers (SAE), 400 Commonwealth
4th Floor, New York, NY 10036. Dr., Warrendale, PA 15096-0001.
*A Summary of Changes section appears at the end of this standard.
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D5001–06
FIG. 2 Ring Mandrel
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