ASTM D6203-97

NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn.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.
Designation: D 6203 – 97 An American National Standard
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Method for
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Thermal Stability of Way Lubricants
This standard is issued under the fixed designation D 6203; 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 criteria. No correlation of the test to field service has been
made.
1.1 This test method is designed primarily to evaluate the
4.2 This test method is intended for use in qualifying a way
thermal stability of hydrocarbon based way lubricants, al-
lubricant, rather than for quality control or condition monitor-
though oxidation may occur during the test.
ing purposes.
1.2 The values stated in SI units are to be regarded as the
standard.
5. Apparatus
1.3 This standard does not purport to address all of the
5.1 Gravity Convection Electric Oven, capable of maintain-
safety concerns, if any, associated with its use. It is the
ing the samples at a test temperature of 100 6 2°C.
responsibility of the user of this standard to establish appro-
5.2 Calibrated Temperature Indicator, suitable for measur-
priate safety and health practices and determine the applica-
ing and controlling the oven temperature.
bility of regulatory limitations prior to use.
5.3 Griffın Beakers, borosilicate glass, 100 mL.
2. Referenced Documents 5.4 Copper Test Specimens, in accordance with UNS
C11000, 99.9 % pure electrolytic tough pitch copper, 6.4 mm
2.1 ASTM Standards:
in diameter by 7.6 cm in length (0.25 by 3.0 in.).
D 2070 Test Method for Thermal Stability of Hydraulic
2
5.5 Steel Test Specimens, in accordance with AISI W1 1 %
Oils
carbon steel, 6.4 mm in diameter by 7.6 cm in length (0.25 by
D 4057 Practice for Manual Sampling of Petroleum and
2
3.0 in.).
Petroleum Products
5.6 Silicon Carbide Abrasive, 320 grit with cloth backing.
2.2 Other Standards:
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5.7 Crocus Cloth.
UNS C11000 Electrolytic Tough Pitch Copper
5
4
5.8 Cincinnati Milacron Color Chart.
AISI W1 1% Carbon Tool Steel
5.9 Facial Tissue.
3. Summary of Test Method
6. Reagents
3.1 A beaker containing test oil and iron rods is placed in a
6.1 Reagent Grade Acetone.
gravity convection electric oven for 24 h at a test temperature
of 100°C. At the completion of the test, the copper and steel
NOTE 1—Warning: Flammable, health hazard.
rods are visually rated for discoloration and the beaker is
6.2 Reagent Grade Heptane.
visually evaluated for deposits.
NOTE 2—Warning: Flammable, health hazard.
4. Significance and Use
7. Preparation of Metal Rods
4.1 Thermal stability characterizes physical and chemical
7.1 Handle the rods at all times using forceps, facial tissue,
property changes which may adversely affect an oil’s lubricat-
or suitable gloves.
ing performance. This test method evaluates the thermal
7.2 Clean the iron and copper catalyst rods, whether new or
stability of a way lubricant in the presence of copper and steel
previously used, prior to use. Clean the rods with the 320 grit
rods at 100°C. Deposits and rod colors are the evaluation
silicon carbide abrasive cloth while rotating the rods in a drill
chuck at 1700 to 1800 rev/min. Clean the surface until it has a
bright copper or steel appearance. Discard rods when diameter
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This test method is under the jurisdiction of ASTM Committee D-2 on
is less than 6 mm.
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
7.3 Prepare surfaces finally with a crocus cloth. Remove all
D02.L on Industrial Lubricants.
Current edition approved Dec. 10, 1997. Published February 1998. grind marks. Finish the rods to a lightly polished surface finish.
2
Annual Book of ASTM Standards, Vol 05.02.
3
Available from Copper Development Assoc., 2 Greenwich Office Park, Box
1840, Greenwich, CT 06836.
4 5
Available from American Iron and Steel Institute, 1133 15th St., NW, Available from Cincinnati Milacron, 470 Marburg Ave., Dept 97B Lubricants
Washington, DC 20005. and Tribology, Cincinnati, OH 45209.
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D 6203
7.4 Wash the rods individually with acetone and air dry on 8.9 Beaker Inspection—Invert the beaker and allow the
completion of the polishing operation.
sample to drain for at least 30 min. Rinse with two 50-mL
portions of heptane. Inspect the beaker and record any deposits
8. Test Procedure
that are visible to the naked eye.
8.1 Place a representative 75 mL sample of test oil obtained
in accordance with Practice D 4057 sampling procedure in a
9. Report
clean 1
...