ASTM D6203-97(2001)

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An American National Standard
Designation:D6203–97 (Reapproved 2001)
Standard Test Method for
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 rods at 100°C. Deposits and rod colors are the evaluation
criteria. No correlation of the test to field service has been
1.1 This test method is designed primarily to evaluate the
made.
thermal stability of hydrocarbon based way lubricants, al-
4.2 This test method is intended for use in qualifying a way
though oxidation may occur during the test.
lubricant, rather than for quality control or condition monitor-
1.2 The values stated in SI units are to be regarded as the
ing purposes.
standard.
1.3 This standard does not purport to address all of the
5. Apparatus
safety concerns, if any, associated with its use. It is the
5.1 Gravity Convection Electric Oven, capable of maintain-
responsibility of the user of this standard to establish appro-
ing the samples at a test temperature of 100 6 2°C.
priate safety and health practices and determine the applica-
5.2 Calibrated Temperature Indicator, suitable for measur-
bility of regulatory limitations prior to use.
ing and controlling the oven temperature.
2. Referenced Documents 5.3 Griffın Beakers, borosilicate glass, 100 mL.
5.4 Copper Test Specimens, in accordance with
2.1 ASTM Standards:
UNS C11000, 99.9 % pure electrolytic tough pitch copper, 6.4
D 2070 Test Method for Thermal Stability of Hydraulic
mm in diameter by 7.6 cm in length (0.25 by 3.0 in.).
Oils
5.5 Steel Test Specimens, in accordance with AISI W11%
D 4057 Practice for Manual Sampling of Petroleum and
carbon steel, 6.4 mm in diameter by 7.6 cm in length (0.25 by
Petroleum Products
3.0 in.).
2.2 Other Standards:
5.6 Silicon Carbide Abrasive, 320 grit with cloth backing.
UNS C11000 Electrolytic Tough Pitch Copper
5.7 Crocus Cloth.
AISI W1 1% Carbon Tool Steel
5.8 Cincinnati Milacron Color Chart.
3. Summary of Test Method
5.9 Facial Tissue.
3.1 Abeaker containing test oil and copper and steel rods is
6. Reagents
placed in a gravity convection electric oven for 24 h at a test
6.1 Reagent Grade Acetone.(Warning—Flammable,health
temperature of 100°C.At the completion of the test, the copper
hazard.)
and steel rods are visually rated for discoloration and the
6.2 Reagent Grade Heptane.(Warning—Flammable,
beaker is visually evaluated for deposits.
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
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
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee bright copper or steel appearance. Discard rods when diameter
D02.L0 on Industrial Lubricants.
is less than 6 mm.
Current edition approved Dec. 10, 1997. Published February 1998.
7.3 Prepare surfaces finally with a crocus cloth. Remove all
Annual Book of ASTM Standards, Vol 05.01.
grind marks. Finish the rods to a lightly polished surface finish.
Annual Book of ASTM Standards, Vol 05.
...