ASTM D2893-03
(Test Method)Standard Test Method for Oxidation Characteristics of Extreme-Pressure Lubrication Oils
Standard Test Method for Oxidation Characteristics of Extreme-Pressure Lubrication Oils
SCOPE
1.1 These test methods (A and B) cover the determination of the oxidation characteristics of extreme-pressure fluid lubricants, gear oils, or mineral oils.
Note 1—The changes in the lubricant resulting from these test methods are not always necessarily associated with oxidation of the lubricant. Some changes may be due to thermal degradation.
1.2 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.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
An American National Standard
Designation: D 2893 – 03
Standard Test Methods for
Oxidation Characteristics of Extreme-Pressure Lubrication
1
Oils
This standard is issued under the fixed designation D 2893; 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* 5. Apparatus
1.1 These test methods (A and B) cover the determination of 5.1 Heating Bath or Block, thermostatically controlled,
the oxidation characteristics of extreme-pressure fluid lubri- capable of maintaining the oil sample in the test tube at a
cants, gear oils, or mineral oils. temperature of 95 6 0.2°C (Test Method A), or 121 6 1.0°C
(Test Method B) fitted with a suitable stirring device to provide
NOTE 1—The changes in the lubricant resulting from these test methods
a uniform temperature throughout the bath or block, and large
are not always necessarily associated with oxidation of the lubricant.
enough to hold the desired number of oxidation cells immersed
Some changes may be due to thermal degradation.
in the heating bath or block to a depth of approximately 350
1.2 This standard does not purport to address all of the
mm.
safety concerns, if any, associated with its use. It is the
5.2 Test Tubes, of borosilicate glass, 41 6 0.5 mm inside
responsibility of the user of this standard to establish appro-
diameter and 600 mm in length are required, each fitted with a
priate safety and health practices and determine the applica-
slotted cork (Note 2) stopper into which shall be inserted a
bility of regulatory limitations prior to use.
glass air delivery tube of 4 to 5 mm of inside diameter. The
length of the air delivery tube shall be such that one end
2. Referenced Documents
reaches to within 6 mm of the bottom of the tube and the other
2.1 ASTM Standards:
end projects 60 to 80 mm from the cork stopper.
D 91 Test Method for Precipitation Number of Lubricating
2
Oils NOTE 2—New corks should be used for each run.
D 445 Test Method for Kinematic Viscosity of Transparent
5.3 Flowmeter, one to each test tube, capable of measuring
and Opaque Liquids (and the Calculation of Dynamic
an air flow of 10 L/h with an accuracy of 60.5 L/h.
2
Viscosity)
5.4 Thermometer—ASTM Solvent Distillation Thermom-
3
E 1 Specification for ASTM Thermometers
eter having a range from 76 to 126°C and conforming to the
requirement for Thermometer 40C as prescribed in Specifica-
3. Summary of Test Method
tion E 1. Alternatively, calibrated thermocouples may be used.
3.1 The oil sample is subjected to a temperature of 95°C
5.5 Air Supply—Oil-free, dried air at constant pressure shall
(Test Method A) or 121°C (Test Method B) in the presence of
be supplied to each flowmeter.
dry air for 312 h.
5.6 Air Dryer—Before being supplied to the flowmeters, the
3.2 The oil is then tested for precipitation number and
air shall be passed through a drying tower packed with
increase in kinematic viscosity.
indicating grade of anhydrous calcium sulfate or equivalent.
The quantity of dessicant should be sufficient to last for the
4. Significance and Use
entire test.
4.1 These test methods have been widely used to measure
the oxidation stability of extreme pressure lubricating fluids,
6. Preparation of Apparatus
gear oils, and mineral oils.
6.1 Cleaning of Oxidation Cells—Clean glassware with a
suitable cleaning solution. (Warning—Causes severe burns. A
recognized carcinogen. Strong oxidizer, contact with other
1
These test methods are under the jurisdiction of ASTM Committee D02 on
material may cause fire. Hygroscropic.)
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
D02.09 on Oxidation.
NOTE 3—While other suitable cleaning solutions are now available, the
Current edition approved July 10, 2003. Published September 2003. Originally
round robin used glassware cleaned with chromic acid. Other cleaning
approved in 1970. Last previous edition approved in 1999 as D 2893–99.
2
Annual Book of ASTM Standards, Vol 05.01.
3
Annual Book of ASTM Standards, Vol 14.03.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D2893–03
solutions such as NoChromix and Micro Clean have been found suitable.
In a referee situation, glassware shall be cleaned by a cleaning solution
satisfactory to all parties involved.
7. Procedure
7.1 Adjust the heating bath to a temperature high enough to
maintain the oil in the desired number of oxidation cells at the
required temperature of 95 6 0.2°C (Test M
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.