ASTM D2070-16
(Test Method)Standard Test Method for Thermal Stability of Hydraulic Oils
Standard Test Method for Thermal Stability of Hydraulic Oils
SIGNIFICANCE AND USE
4.1 Thermal stability characterizes physical and chemical property changes which may adversely affect an oil's lubricating performance. This test method evaluates the thermal stability of a hydraulic oil in the presence of copper and steel at 135 °C. Rod colors are the evaluation criteria. Sludge values are reported for informational purposes. No correlation of the test to field service has been made.
SCOPE
1.1 This test method2 is designed primarily to evaluate the thermal stability of hydrocarbon based hydraulic oils although oxidation may occur during the test.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 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 and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: D2070 − 16
Standard Test Method for
1
Thermal Stability of Hydraulic Oils
This standard is issued under the fixed designation D2070; 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* 4. Significance and Use
2
1.1 This test method is designed primarily to evaluate the 4.1 Thermal stability characterizes physical and chemical
thermal stability of hydrocarbon based hydraulic oils although property changes which may adversely affect an oil’s lubricat-
oxidation may occur during the test.
ing performance. This test method evaluates the thermal
stability of a hydraulic oil in the presence of copper and steel
1.2 The values stated in SI units are to be regarded as
at 135 °C. Rod colors are the evaluation criteria. Sludge values
standard. No other units of measurement are included in this
are reported for informational purposes. No correlation of the
standard.
test to field service has been made.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
5. Apparatus
responsibility of the user of this standard to establish appro-
5.1 An aluminum block with equally spaced holes is used.
priate safety and health practices and determine the applica-
An example is described in Fig. A1.1 of Annex A1.
bility of regulatory limitations prior to use.
5.2 Electric gravity convection oven capable of maintaining
2. Referenced Documents
the aluminum block at a test temperature of 135 °C 6 1 °C.
3
2.1 ASTM Standards:
5.2.1 Calibrated thermocouple and temperature indicator
D4057 Practice for Manual Sampling of Petroleum and
centered in aluminum block.
Petroleum Products
5.3 250 mL Griffin beakers of borosilicate glass.
4
2.2 Copper Development Association Standard
5.4 Copper test specimens are to be UNS C11000, 99.9 %
UNS C11000 Electrolytic Tough Pitch Copper
5
pure electrolytic tough pitch copper, 6.35 mm in diameter by
2.3 American Iron and Steel Institute Standard (AISI)
6,7
7.6 cm in length (0.25 in. by 3.0 in.).
W-1 Carbon Tool Steel
5.5 Steel test specimens are to be AISI W-1 1 % carbon
3. Summary of Test Method
steel, 6.35 mm in diameter 7.6 cm in length (0.25 in. by
6,7
3.1 A beaker containing test oil, copper and iron rods is
3.0 in.).
placed in an aluminum block in an electric gravity convection
5.6 Silicon carbide abrasive 320 grit with cloth backing.
oven for 168 h at a test temperature of 135 °C. At the
5.7 Crocus cloth.
completion of the test, the copper and steel rods are rated
8,7
visually for discoloration and the oil is analyzed for the
5.8 41 Whatman filter paper, 47 mm diameter.
quantity of sludge.
9,7
5.9 Millipore filter, 8 µm Type SC, 47 mm diameter.
5.10 Millipore glass filter holder, 47 mm, Cat #XX10.04700
1
This test method is under the jurisdiction of ASTM Committee D02 on
or equivalent.
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
Subcommittee D02.N0 on Hydraulic Fluids.
Current edition approved Dec. 15, 2016. Published January 2017. Originally
approved in 1991. Last previous edition approved in 2010 as D2070 – 91(2010).
6
DOI: 10.1520/D2070-16. The sole source of supply of the apparatus known to the committee at this time
2
This procedure was adopted from the Fives Cincinnati Thermal Stability Test is Metaspec LLC, 790 W. Mayfield Blvd., San Antonio, TX 78211,
Procedure “A”, Fives Cincinnati Manual 10-SP-89050. metaspec@earthlink.net.
3 7
For referenced ASTM standards, visit the ASTM website, www.astm.org, or If you are aware of alternative suppliers, please provide this information to
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM ASTM International Headquarters. Your comments will receive careful consider-
1
Standards volume information, refer to the standard’s Document Summary page on ation at a meeting of the responsible technical committee, which you may attend.
8
the ASTM website. The sole source of supply of the apparatus known to the committee at this time
4
Available from Copper Development Assoc., Inc., 260 Madison Ave., New is Whatman Ltd., part of GE Healthcare, http://www.whatman.com.
9
York, NY 10016, http://www.copper.org. The sole source of supply of the apparatus known to the committee at this time
5
Available from American Iron and Steel Institute (AISI), 25 Massachusetts is EMD Millipore Corp., 290 Concord Rd., Billerica, MA 01821; http://
Ave., NW, Suite 800, Washington, DC 20001, http://www.steel.org. www.EMDmillipore.com.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Har
...
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.
Designation: D2070 − 91 (Reapproved 2010) D2070 − 16
Standard Test Method for
1
Thermal Stability of Hydraulic Oils
This standard is issued under the fixed designation D2070; 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 Scope*
2
1.1 This test method is designed primarily to evaluate the thermal stability of hydrocarbon based hydraulic oils although
oxidation may occur during the test.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
3
2.1 ASTM Standards:
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
4
2.2 Copper Development Association Standard
UNS C11000 Electrolytic Tough Pitch Copper
5
2.3 American Iron and Steel Institute Standard (AISI)
W-1 Carbon Tool Steel
3. Summary of Test Method
3.1 A beaker containing test oil, copper and iron rods is placed in an aluminum block in an electric gravity convection oven
for 168 h at a test temperature of 135 °C. At the completion of the test, the copper and steel rods are rated visually for discoloration
and the oil is analyzed for the quantity of sludge.
4. Significance and Use
4.1 Thermal stability characterizes physical and chemical property changes which may adversely affect an oil’s lubricating
performance. This test method evaluates the thermal stability of a hydraulic oil in the presence of copper and steel at 135°C.135 °C.
Rod colors are the evaluation criteria. Sludge values are reported for informational purposes. No correlation of the test to field
service has been made.
5. Apparatus
5.1 An aluminum block with equally spaced holes is used. An example is described in Fig. A1.1 of Annex A1.
5.2 Electric gravity convection oven capable of maintaining the aluminum block at a test temperature of 135 °C 6 1 °C.
5.2.1 Calibrated thermocouple and temperature indicator centered in aluminum block.
5.3 250 mL Griffin beakers of borosilicate glass.
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.N0 on Hydraulic Fluids.
Current edition approved Oct. 1, 2010Dec. 15, 2016. Published November 2010January 2017. Originally approved in 1991. Last previous edition approved in 20062010
as D2070–91(2006).D2070 – 91(2010). DOI: 10.1520/D2070-91R10.10.1520/D2070-16.
2
This procedure was adopted from the Fives Cincinnati Milacron Thermal Stability Test, Cincinnati Milacron Test Procedure “A”, Fives Cincinnati Manual 10-SP-89050.
3
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.
4
Available from Copper Development Assoc., 2 Greenwich Office Park, Box 1840, Greenwich, CT 06836.Inc., 260 Madison Ave., New York, NY 10016,
http://www.copper.org.
5
Available from American Iron and Steel Institute (AISI), 1140 Connecticut25 Massachusetts Ave., NW, Suite 705,800, Washington, DC 20036,20001, http://
www.steel.org.
*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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D2070 − 16
5.4 Copper test specimens are to be UNS C11000, 99.9 % pure electrolytic tough pitch copper, 6.35 mm in diameter by 7.6 cm
6,7
in length (0.25 in. by 3.0 in.).
6,7
5.5 Steel test specimens are to be AISI W-1 1 % carbon steel, 6.35 mm in diameter 7.6 cm in length (0.25 in. by 3.0 in.).
5.6 Silicon carbide abrasive 320 grit with cloth backing.
5.7 Crocus cloth.
8,7
5.8 No. 41 Whatman filter paper, 47 mm diameter.
9,7
5.9 Millipore filter, 8 micron 8 μm Type SC, 47 mm 47 mm diameter.
5.10 Millipore glass filter holder, 47 mm, 47 mm, Cat #XX10.04700 or equivalent.
10,7
5.11 Cincinnati Milacron color chart.Fives Cincinnati Lub
...
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