ASTM D2532-10
(Test Method)Standard Test Method for Viscosity and Viscosity Change After Standing at Low Temperature of Aircraft Turbine Lubricants
Standard Test Method for Viscosity and Viscosity Change After Standing at Low Temperature of Aircraft Turbine Lubricants
SIGNIFICANCE AND USE
Aircraft turbine lubricants, upon standing at low temperatures for prolonged periods of time, may show an increase in kinematic viscosity. This increase may cause lubrication problems in aircraft engines. Thus, this test method is used to ensure that the kinematic viscosity does not exceed the maximum kinematic viscosity in certain specifications for aircraft turbine lubricants.
SCOPE
1.1 This test method covers the determination of the kinematic viscosity of aircraft turbine lubricants at low temperature, and the percent change of viscosity after a 3-h and a 72-h standing period at low temperature.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.2.1 The SI units for Kinematic Viscosity are mm2/s. For user reference, 1 mm2/s = 10-6 m2/s = 1 cSt.
1.3 WARNINGMercury has been designated by many regulatory agencies as a hazardous material that can cause central nervous system, kidney and liver damage. Mercury, or its vapor, may be hazardous to health and corrosive to materials. Caution should be taken when handling mercury and mercury containing products. See the applicable product Material Safety Data Sheet (MSDS) for details and EPA’s websitehttp://www.epa.gov/mercury/faq.htmfor additional information. Users should be aware that selling mercury and/or mercury containing products into your state or country may be prohibited by law.
1.4 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 6.
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Designation: D2532 − 10
StandardTest Method for
Viscosity and Viscosity Change After Standing at Low
1
Temperature of Aircraft Turbine Lubricants
This standard is issued under the fixed designation D2532; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* D445Test Method for Kinematic Viscosity of Transparent
and Opaque Liquids (and Calculation of DynamicViscos-
1.1 This test method covers the determination of the kine-
ity)
matic viscosity of aircraft turbine lubricants at low
E1Specification for ASTM Liquid-in-Glass Thermometers
temperature,andthepercentchangeofviscosityaftera3-hand
a 72-h standing period at low temperature.
3. Summary of Test Method
1.2 The values stated in SI units are to be regarded as
3.1 Kinematic viscosity is measured at low temperature in
standard. No other units of measurement are included in this
accordancewithTestMethodD445andattimeintervalsof3h
standard.
and 72 h.
2
1.2.1 The SI units for Kinematic Viscosity are mm /s. For
2 -6 2
NOTE 1—This test method was developed and the precision established
user reference, 1 mm/s=10 m /s = 1 cSt.
on tests at −53.9°C (−65°F). It is also applied at −40°C (−40°F) and may
1.3 WARNING—Mercury has been designated by many
be used at other temperatures. Viscosities may be measured and reported
at other intervals as agreed by the contracting parties.
regulatory agencies as a hazardous material that can cause
central nervous system, kidney and liver damage. Mercury, or
4. Significance and Use
its vapor, may be hazardous to health and corrosive to
4.1 Aircraft turbine lubricants, upon standing at low tem-
materials.Cautionshouldbetakenwhenhandlingmercuryand
peratures for prolonged periods of time, may show an increase
mercury containing products. See the applicable product Ma-
in kinematic viscosity. This increase may cause lubrication
terial Safety Data Sheet (MSDS) for details and EPA’s
problems in aircraft engines. Thus, this test method is used to
website—http://www.epa.gov/mercury/faq.htm—for addi-
ensure that the kinematic viscosity does not exceed the
tional information. Users should be aware that selling mercury
maximum kinematic viscosity in certain specifications for
and/or mercury containing products into your state or country
aircraft turbine lubricants.
may be prohibited by law.
1.4 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 Viscometers, drying tubes, low-temperature bath,
responsibility of the user of this standard to establish appro-
thermometer, timer, secondary viscosity standard, filter, and
priate safety and health practices and determine the applica-
cleaning supplies are described in detail inTest Method D445.
bility of regulatory limitations prior to use. For specific hazard
statements, see Section 6. 5.2 Viscometer—The viscometer shall meet the require-
ments of Test Method D445 and be of the type in which the
2. Referenced Documents
sample can be rerun without cleaning the viscometer. Suitable
2
holders should be used. For convenience it is recommended
2.1 ASTM Standards:
that the viscometer size be chosen to keep the efflux time
between 200 and 1000 s.
1
This test method is under the jurisdiction of ASTM Committee D02 on
5.3 Drying Tubes—Fit the viscometer openings with drying
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
tubes filled with indicating silica gel, using cotton at top and
Subcommittee D02.07 on Flow Properties.
bottom to hold the loosely packed desiccant in place. Provide
CurrenteditionapprovedJuly1,2010.PublishedJuly2010.Originallyapproved
a cross-connection on the viscometer side of the drying tubes
in 1966. Last previous edition approved in 2003 as D2532–03. DOI: 10.1520/
D2532-10.
(whichcanbeclosedbyapinchclamporstopcockwhileliquid
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
is being drawn into the efflux bulb) so that the restriction to air
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
flow will not cause error. Replace the silica gel when a
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. lavender color is noticeable.
*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
1
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D2532 − 10
5.4 Viscosity Tempe
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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.
Designation:D2532–03 Designation:D2532–10
Standard Test Method for
Viscosity and Viscosity Change After Standing at Low
1
Temperature of Aircraft Turbine Lubricants
This standard is issued under the fixed designation D2532; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope*
1.1 This test method covers the determination of the kinematic viscosity of aircraft turbine lubricants at low temperature, and
the percent change of viscosity after a 3-h and a 72-h standing period at low temperature.
1.2This test method uses the millimetre squared per second (mm
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
2
1.2.1 TheSIunitsforKinematicViscosityaremm/s)astheunitofkinematicviscosity.Forinformation,theequivalentcgsunit,
the centistokes, is shown in parentheses.
1.3The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
2 -6 2
/s. For user reference, 1 mm/s=10 m /s = 1 cSt.
1.3 WARNING—Mercury has been designated by many regulatory agencies as a hazardous material that can cause central
nervous system, kidney and liver damage. Mercury, or its vapor, may be hazardous to health and corrosive to materials. Caution
should be taken when handling mercury and mercury containing products. See the applicable product Material Safety Data Sheet
(MSDS) for details and EPA’s website—http://www.epa.gov/mercury/faq.htm—for additional information. Users should be aware
that selling mercury and/or mercury containing products into your state or country may be prohibited by law.
1.4 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 6.
2. Referenced Documents
2
2.1 ASTM Standards:
D445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)
E1 Specification for ASTM Liquid-in-Glass Thermometers
3. Summary of Test Method
3.1 Kinematic viscosity is measured at low temperature in accordance with Test Method D445 and at time intervals of 3h and
72 h.
NOTE 1—This test method was developed and the precision established on tests at −53.9°C (−65°F). It is also applied at −40°C (−40°F) and may be
used at other temperatures. Viscosities may be measured and reported at other intervals as agreed by the contracting parties.
4. Significance and Use
4.1 Aircraft turbine lubricants, upon standing at low temperatures for prolonged periods of time, may show an increase in
kinematic viscosity.This increase may cause lubrication problems in aircraft engines.Thus, this test method is used to ensure that
the kinematic viscosity does not exceed the maximum kinematic viscosity in certain specifications for aircraft turbine lubricants.
5. Apparatus
5.1 Viscometers, drying tubes, low-temperature bath, thermometer, timer, secondary viscosity standard, filter, and cleaning
1
This test method is under the jurisdiction ofASTM Committee D02 on Petroleum Products and Lubricants and is the direct responsibility of Subcommittee D02.07 on
Flow Properties.
Current edition approved Dec. 1, 2003. Published January 2004. Originally approved in 1966. Last previous edition approved in 1998 as D2532–93 (1998). DOI:
10.1520/D2532-03.
Current edition approved July 1, 2010. Published July 2010. Originally approved in 1966. Last previous edition approved in 2003 as D2532–03. DOI: 10.1520/D2532-10.
2
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatservice@astm.org.For Annual Book ofASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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.
1
---------------------- Page: 1 ----------------------
D2532–10
supplies are described in detail in Test Method D445.
5.2 Viscometer—The viscometer shal
...
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