ASTM D6278-20
(Test Method)Standard Test Method for Shear Stability of Polymer Containing Fluids Using a European Diesel Injector Apparatus
Standard Test Method for Shear Stability of Polymer Containing Fluids Using a European Diesel Injector Apparatus
SIGNIFICANCE AND USE
5.1 This test method evaluates the percent viscosity loss for polymer-containing fluids resulting from polymer degradation in the high shear nozzle device. Thermal or oxidative effects are minimized.
5.2 This test method is used for quality control purposes by manufacturers of polymeric lubricant additives and their customers.
5.3 This test method is not intended to predict viscosity loss in field service in different field equipment under widely varying operating conditions, which may cause lubricant viscosity to change due to thermal and oxidative changes as well as by the mechanical shearing of polymer. However, when the field service conditions, primarily or exclusively, result in the degradation of polymer by mechanical shearing, there may be a correlation between the results from this test method and results from the field.
SCOPE
1.1 This test method covers the evaluation of the shear stability of polymer-containing fluids. The test method measures the percent viscosity loss at 100 °C of polymer-containing fluids when evaluated by a diesel injector apparatus procedure that uses European diesel injector test equipment. The viscosity loss reflects polymer degradation due to shear at the nozzle.
Note 1: Test Method D2603 has been used for similar evaluation of shear stability; limitations are as indicated in the significance statement. No detailed attempt has been undertaken to correlate the results of this test method with those of the sonic shear test method.
Note 2: This test method uses test apparatus as defined in CEC L-14-A-93. This test method differs from CEC-L-14-A-93 in the period of time required for calibration.
Note 3: Test Method D5275 also shears oils in a diesel injector apparatus but may give different results.
Note 4: This test method has different calibration and operational requirements than withdrawn Test Method D3945.
Note 5: Test Method D7109 is a similar procedure that measures shear stability at both 30 and 90 injection cycles. This test method uses 30 injection cycles only.
1.2 The values stated in SI units are to be regarded as the standard.
1.2.1 Exception—Non-SI units are provided in parentheses.
1.3 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. Specific precautionary statements are given in Section 8.
1.4 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.
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Designation: D6278 − 20
Standard Test Method for
Shear Stability of Polymer Containing Fluids Using a
1
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
2
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
3
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.
1 2
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
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 194
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation: D6278 − 17 D6278 − 20
Standard Test Method for
Shear Stability of Polymer Containing Fluids Using a
1
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
ε NOTE—Subsection 11.1.14 was corrected editorially in March 2017.
1. Scope*
1.1 This test method covers the evaluation of the shear stability of polymer-containing fluids. The test method measures the
percent viscosity loss at 100 °C of polymer-containing fluids when evaluated by a diesel injector apparatus procedure that uses
European diesel injector test equipment. The viscosity loss reflects polymer degradation due to shear at the nozzle.
NOTE 1—Test Method D2603 has been used for similar evaluation of shear stability; limitations are as indicated in the significance statement. No
detailed attempt has been undertaken to correlate the results of this test method with those of the sonic shear test method.
NOTE 2—This test method uses test apparatus as defined in CEC L-14-A-93. This test method differs from CEC-L-14-A-93 in the period of time
required for calibration.
NOTE 3—Test Method D5275 also shears oils in a diesel injector apparatus but may give different results.
NOTE 4—This test method has different calibration and operational requirements than withdrawn Test Method D3945.
NOTE 5—Test Method D7109 is a similar procedure that measures shear stability at both 30 and 90 injection cycles. This test method uses 30 injection
cycles only.
1.2 The values stated in SI units are to be regarded as the standard.
1.2.1 Exception—Non-SI units are provided in parentheses.
1.3 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use. Specific precautionary statements are given in Section 8.
1.4 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)
D2603 Test Method for Sonic Shear Stability of Polymer-Containing Oils
D5275 Test Method for Fuel Injector Shear Stability Test (FISST) for Polymer Containing Fluids
D6299 Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measure-
ment System Performance
D7042 Test Method for Dynamic Viscosity and Density of Liquids by Stabinger Viscometer (and the Calculation of Kinematic
Viscosity)
D7109 Test Method for Shear Stability of Polymer-Containing Fluids Using a European Diesel Injector Apparatus at 30 Cycles
and 90 Cycles
3
2.2 Coordination European Council (CEC) Standard:
CEC L-14-A-93 Evaluation of the Mechanical Shear Stability of Lubricating Oils Containing Polymers
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.07 on Flow Properties.
Current edition approved Jan. 1, 2017May 1, 2020. Published February 2017May 2020. Originally approved in 1998. Last previous edition approved in 20122017 as
ɛ1
D6278 – 12D6278 – 17 . DOI: 10.1520/D6278-17E01.10.1520/D6278-20.
2
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 Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from CEC Secretariat, Interlynk Administrative Services, Ltd., Lynk House, 17 Peckleton Lane, Desford, Leicestershire, LE9 9JU, United Kingdom.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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