ASTM D6278-20

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Designation: D6278 − 20
Standard Test Method for
Shear Stability of Polymer Containing Fluids Using a
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European Diesel Injector Apparatus
This standard is issued under the fixed designation D6278; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 2. Referenced Documents
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1.1 This test method covers the evaluation of the shear 2.1 ASTM Standards:
stability of polymer-containing fluids. The test method mea- D445 Test Method for Kinematic Viscosity of Transparent
sures the percent viscosity loss at 100 °C of polymer- and Opaque Liquids (and Calculation of Dynamic Viscos-
containing fluids when evaluated by a diesel injector apparatus ity)
procedure that uses European diesel injector test equipment. D2603 Test Method for Sonic Shear Stability of Polymer-
The viscosity loss reflects polymer degradation due to shear at Containing Oils
the nozzle. D5275 Test Method for Fuel Injector Shear Stability Test
(FISST) for Polymer Containing Fluids
NOTE 1—Test Method D2603 has been used for similar evaluation of
D6299 Practice for Applying Statistical Quality Assurance
shear stability; limitations are as indicated in the significance statement.
and Control Charting Techniques to Evaluate Analytical
Nodetailedattempthasbeenundertakentocorrelatetheresultsofthistest
method with those of the sonic shear test method.
Measurement System Performance
NOTE 2—This test method uses test apparatus as defined in CEC
D7042 Test Method for Dynamic Viscosity and Density of
L-14-A-93.This test method differs from CEC-L-14-A-93 in the period of
Liquids by Stabinger Viscometer (and the Calculation of
time required for calibration.
Kinematic Viscosity)
NOTE 3—Test Method D5275 also shears oils in a diesel injector
D7109 Test Method for Shear Stability of Polymer-
apparatus but may give different results.
NOTE 4—This test method has different calibration and operational
Containing Fluids Using a European Diesel Injector Ap-
requirements than withdrawn Test Method D3945.
paratus at 30 Cycles and 90 Cycles
NOTE5—TestMethodD7109isasimilarprocedurethatmeasuresshear
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2.2 Coordination European Council (CEC) Standard:
stability at both 30 and 90 injection cycles. This test method uses 30
injection cycles only.
CEC L-14-A-93 Evaluation of the Mechanical Shear Sta-
bility of Lubricating Oils Containing Polymers
1.2 The values stated in SI units are to be regarded as the
standard.
3. Terminology
1.2.1 Exception—Non-SI units are provided in parentheses.
1.3 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 kinematic viscosity, n—a measure of the resistance to
responsibility of the user of this standard to establish appro- flow of a fluid under gravity.
priate safety, health, and environmental practices and deter-
3.2 Definitions of Terms Specific to This Standard:
mine the applicability of regulatory limitations prior to use.
3.2.1 calibration pressure, n—the recorded gauge pressure
Specific precautionary statements are given in Section 8.
when calibration fluid RL233 undergoes a viscosity loss of
1.4 This international standard was developed in accor- 2 2
2.70 mm /s to 2.90 mm /s when the recorded gauge pressure is
dance with internationally recognized principles on standard-
within the range of 13.0 MPa to 18.0 MPa.
ization established in the Decision on Principles for the
3.2.2 percent viscosity loss, n—viscosity loss, as defined in
Development of International Standards, Guides and Recom-
3.2.3, divided by the pre-sheared viscosity, and reported as a
mendations issued by the World Trade Organization Technical
percent.
Barriers to Trade (TBT) Committee.
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This test method is under the jurisdiction of ASTM Committee D02 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Subcommittee D02.07 on Flow Properties. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved May 1, 2020. Published May 2020. Originally the ASTM website.
ɛ1 3
approved in 1998. Last previous edition approved in 2017 as D6278 – 17 . DOI: Available from CEC Secretariat, InterlynkAdministrative Services, Ltd., Lynk
10.1520/D6278-20. House, 17 Peckleton Lane, Desford, Leicestershire, LE9 9JU, United Kingdom.
*A Summary of Changes section appears at the end of this standard
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