ASTM D97-02
(Test Method)Standard Test Method for Pour Point of Petroleum Products
Standard Test Method for Pour Point of Petroleum Products
SCOPE
1.1 This test method is intended for use on any petroleum product. A procedure suitable for black specimens, cylinder stock, and nondistillate fuel oil is described in . A procedure for testing the fluidity of a residual fuel oil at a specified temperature is described in the appendix.
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. For specific hazard statements, see Section 7.
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An American National Standard
Designation: D 97 – 02
Designation: 15/95
Standard Test Method for
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Pour Point of Petroleum Products
This standard is issued under the fixed designation D 97; 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.
This test method has been adopted for use by government agencies to replace Method 201 of Federal Test Methods Standard No. 791b,
and Method 4452 of Federal Test Method Standard No. 141A.
This test method was adopted as a joint ASTM-IP Standard in 1965.
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1. Scope E 1 Specification for ASTM Thermometers
E 77 Test Method for Inspection and Verification of Ther-
1.1 This test method is intended for use on any petroleum
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2
mometers
product. A procedure suitable for black specimens, cylinder
2.2 IP Standards:
stock, and nondistillate fuel oil is described in 8.8. A procedure
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Specifications for IP Standard Thermometers
for testing the fluidity of a residual fuel oil at a specified
temperature is described in the appendix.
3. Terminology
1.2 This standard does not purport to address all of the
3.1 Definitions:
safety concerns, if any, associated with its use. It is the
3.1.1 black oil, n—lubricant containing asphaltic materials.
responsibility of the user of this standard to establish appro-
Black oils are used in heavy-duty equipment applications, such
priate safety and health practices and determine the applica-
as mining and quarrying, where extra adhesiveness is desired.
bility of regulatory limitations prior to use. For specific hazard
3.1.2 cylinder stock, n—lubricant for independently lubri-
statements, see Section 7.
cated engine cylinders, such as those of steam engines and air
2. Referenced Documents compressors. Cylinder stock are also used for lubrication of
valves and other elements in the cylinder area.
2.1 ASTM Standards:
3.1.3 pour point, n—in petroleum products, the lowest
D 117 Guide for Sampling, Test Methods, Specifications,
temperature at which movement of the test specimen is
and Guide for Electrical Insulating Oils of Petroleum
3 observed under prescribed conditions of test.
Origin
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3.1.4 residual fuel, n—a liquid fuel containing bottoms
D 396 Specification for Fuel Oils
remaining from crude distillation or thermal cracking; some-
D 1659 Test Method for Maximum Fluidity Temperature of
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times referred to as heavy fuel oil.
Residual Fuel Oil
4 3.1.4.1 Discussion—Residual fuels comprise Grades 4, 5,
D 2500 Test Method for Cloud Point of Petroleum Oils
and 6 fuel oils, as defined in Specification D 396.
D 3245 Test Method for Pumpability of Industrial Fuel
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Oils
4. Summary of Test Method
4.1 After preliminary heating, the sample is cooled at a
specified rate and examined at intervals of 3°C for flow
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This test method is under the jurisdiction of ASTM Committee D02 on
characteristics. The lowest temperature at which movement of
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
the specimen is observed is recorded as the pour point.
D02.07 on Flow Properties.
Current edition approved March 10, 2002. Published May 2002. Originally
5. Significance and Use
published as D 97 – 27. In 1927, revised and replaced former D 47. Last previous
edition D 97 – 96a.
5.1 The pour point of a petroleum specimen is an index of
In the IP, this test method is under the jurisdiction of the Standardization
the lowest temperature of its utility for certain applications.
Committee.
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Statements defining this test and its significance when applied to electrical
insulating oils of mineral origin will be found in Guide D 117.
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Annual Book of ASTM Standards, Vol 10.03.
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Annual Book of ASTM Standards, Vol 05.01. Annual Book of ASTM Standards, Vol 14.03.
5 8
Discontinued; see 1984 Annual Book of ASTM Standards, Vol 05.01. Methods for Analysis and Testing, IP Standards for Petroleum and its Products,
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Annual Book of ASTM Standards, Vol 05.02 Part I, Vol 2.
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D97
6. Apparatus 6.5 Disk, cork or felt, 6 mm thick to fit loosely inside the
jacket.
6.1 Test Jar, cylindrical, of clear glass, flat bottom, 33.2 to
6.6 Gasket, to fit snugly around the outside of the test jar
34.8-mm outside diameter, and 115 to 125 mm in height. The
and loosely inside the jacket. The gasket may be made of
inside diameter of the jar can range from 30.0 to 32.4 mm,
rubber, leather, or other material that is elastic enough to cling
within the constraint that the wall thickness be no greater than
to the test jar and h
...
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