ASTM D6892-03(2020)
(Test Method)Standard Test Method for Pour Point of Petroleum Products (Robotic Tilt Method)
Standard Test Method for Pour Point of Petroleum Products (Robotic Tilt Method)
SIGNIFICANCE AND USE
5.1 The pour point of a petroleum product is an index of the lowest temperature of its utility for certain applications. Flow characteristics, such as pour point, can be critical for the correct operation of lubricating systems, fuel systems, and pipeline operations.
FIG. 1 Schematic of Cooling/Heating Block and Cooling Circulating Bath
5.2 Petroleum blending operations require precise measurement of the pour point.
5.3 Test results from this test method can be determined at either 1 °C or 3 °C intervals.
5.4 This test method yields a pour point in a format similar to Test Method D97 or IP 15, when the 3 °C interval results are reported.
Note 2: Since some users may wish to report their results in a format similar to Test Method D97 or IP 15 (in 3 °C intervals) the precision data were derived for the 3 °C intervals. For statements on bias relative to Test Method D97 or IP 15, see the research report.
5.5 This test method has comparable repeatability and better reproducibility relative to Test Method D97 or IP 15 as measured in the 1998 interlaboratory program (see Section 13).
SCOPE
1.1 This test method covers the determination of the pour point of petroleum products by an automatic instrument that tilts the test jar to detect movement of the surface of the test specimen with an optical device, after being removed from a regulated, stepped-bath cooling jacket.
1.2 This test method is designed to cover the range of temperatures from −57 °C to +51 °C; however, the range of temperatures included in the 1998 interlaboratory test program only covered the temperature range from −51 °C to −11 °C.
1.3 Test results from this test method can be determined at either 1 °C or 3 °C testing intervals.
1.4 This test method is not intended for use with crude oils.
Note 1: The applicability of this test method on residual fuel samples has not been verified. For further information on the applicability, refer to 13.4.
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.6 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D6892 − 03 (Reapproved 2020)
Standard Test Method for
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Pour Point of Petroleum Products (Robotic Tilt Method)
This standard is issued under the fixed designation D6892; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope D4057Practice for Manual Sampling of Petroleum and
Petroleum Products
1.1 This test method covers the determination of the pour
D4177Practice for Automatic Sampling of Petroleum and
point of petroleum products by an automatic instrument that
Petroleum Products
tilts the test jar to detect movement of the surface of the test
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2.2 Energy Institute Standard:
specimen with an optical device, after being removed from a
IP15Test Method for Pour Point of Petroleum Products
regulated, stepped-bath cooling jacket.
1.2 This test method is designed to cover the range of
3. Terminology
temperatures from −57°C to +51°C; however, the range of
3.1 Definitions:
temperatures included in the 1998 interlaboratory test program
3.1.1 pour point, n—in petroleum products, the lowest
only covered the temperature range from −51°C to −11°C.
temperature at which movement of the test specimen is
1.3 Test results from this test method can be determined at
observed under prescribed conditions of test.
either 1°C or 3°C testing intervals.
3.2 Definitions of Terms Specific to This Standard:
1.4 This test method is not intended for use with crude oils.
3.2.1 no-flow point, n—in petroleum products, the tempera-
NOTE 1—The applicability of this test method on residual fuel samples
ture of the test specimen at which a wax crystal structure or
has not been verified. For further information on the applicability, refer to
viscosity increase, or both, impedes movement of the surface
13.4.
of the test specimen under the conditions of the test.
1.5 The values stated in SI units are to be regarded as
3.2.1.1 Discussion—The no-flow point occurs when, upon
standard. No other units of measurement are included in this
cooling, the formation of wax crystal structures or viscosity
standard.
increase,orboth,hasprogressedtothepointwheretheapplied
1.6 This standard does not purport to address all of the
observation device no longer detects movement under the
safety concerns, if any, associated with its use. It is the
conditions of the test. The preceding observation temperature
responsibility of the user of this standard to establish appro-
at which flow of the test specimen is last observed is the pour
priate safety, health, and environmental practices and deter-
point.
mine the applicability of regulatory limitations prior to use.
3.2.2 tilting, vt—technique of movement where the test jar
1.7 This international standard was developed in accor-
in a vertical position is moved towards a horizontal position to
dance with internationally recognized principles on standard-
induce specimen movement.
ization established in the Decision on Principles for the
3.2.2.1 Discussion—When the test jar is tilted and held in a
Development of International Standards, Guides and Recom-
horizontal position for 5s without detection of movement of
mendations issued by the World Trade Organization Technical
the surface of the specimen, this is the no-flow point and the
Barriers to Trade (TBT) Committee.
test is complete.
2. Referenced Documents
4. Summary of Test Method
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2.1 ASTM Standards:
4.1 After insertion of the specimen into the automatic pour
D97Test Method for Pour Point of Petroleum Products
point apparatus and initiation of the testing program, the
specimen is heated and then cooled according to a prescribed
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This test method is under the jurisdiction of ASTM Committee D02 on
profile. The specimen surface is examined periodically for
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
Subcommittee D02.07 on Flow Properties.
movement using an optical camera system mounted on top of
Current edition approved May 1, 2020. Published June 2020. Originally
the specimen test jar, while tilting the specimen test jar. The
approved in 2003. Last previous edition approved in 2014 as D6892–03 (2014).
test jar is removed from the jacketed cooling chamber prior to
DOI: 10.1520/D6892-03R20.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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Standards volume information, refer to the standard’s Document Summary page on Available from Energy Institute, 61 New Cavendi
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