ASTM D6082-22
(Test Method)Standard Test Method for High Temperature Foaming Characteristics of Lubricating Oils
Standard Test Method for High Temperature Foaming Characteristics of Lubricating Oils
SIGNIFICANCE AND USE
5.1 The tendency of oils to foam at high temperature can be a serious problem in systems such as high-speed gearing, high volume pumping, and splash lubrication. Foaming can cause inadequate lubrication, cavitation, and loss of lubricant due to overflow, and these events can lead to mechanical failure.
5.2 Correlation between the amount of foam created or the time for foam to collapse, or both, and actual lubrication failure has not been established. Such relations should be empirically determined for foam sensitive applications.
SCOPE
1.1 This test method covers the procedure for determining the foaming characteristics of lubricating oils (specifically transmission fluid and motor oil) at 150 °C.
1.2 Foaming characteristics of lubricating oils at temperatures up to 93.5 °C are determined by Test Method D892 or IP 146.
1.3 The values stated in SI units are to be regarded as standard.
1.3.1 Exception—The values given in parentheses are provided for information only.
1.4 WARNING—Mercury has been designated by many regulatory agencies as a hazardous substance that can cause serious medical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Use caution when handling mercury and mercury-containing products. See the applicable product Safety Data Sheet (SDS) for additional information. The potential exists that selling mercury or mercury-containing products, or both, is prohibited by local or national law. Users must determine legality of sales in their location.
1.5 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.
1.6 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: D6082 − 22
Standard Test Method for
High Temperature Foaming Characteristics of Lubricating
1
Oils
This standard is issued under the fixed designation D6082; 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
2.1 ASTM Standards:
1.1 This test method covers the procedure for determining
D892 Test Method for Foaming Characteristics of Lubricat-
the foaming characteristics of lubricating oils (specifically
ing Oils
transmission fluid and motor oil) at 150 °C.
E128 Test Method for Maximum Pore Diameter and Perme-
1.2 Foaming characteristics of lubricating oils at tempera-
ability of Rigid Porous Filters for Laboratory Use
tures up to 93.5 °C are determined by Test Method D892 or IP
E1272 Specification for Laboratory Glass Graduated Cylin-
146.
ders
3
2.2 Energy Institute Standards:
1.3 The values stated in SI units are to be regarded as
IP 146 Standard Method of Test for Foaming Characteristics
standard.
of Lubricating Oils
1.3.1 Exception—The values given in parentheses are pro-
vided for information only.
3. Terminology
3.1 Definitions:
1.4 WARNING—Mercury has been designated by many
3.1.1 diffuser, n—for gas, a device for dispersing gas into a
regulatory agencies as a hazardous substance that can cause
liquid (Test Method D892).
serious medical issues. Mercury, or its vapor, has been dem-
3.1.1.1 Discussion—Although diffusers can be made of
onstrated to be hazardous to health and corrosive to materials.
either metallic or non-metallic materials, in this test method the
Use caution when handling mercury and mercury-containing
diffuser is sintered stainless steel.
products. See the applicable product Safety Data Sheet (SDS)
for additional information. The potential exists that selling 3.1.2 entrained air (or gas), n—in liquids, a two-phase
mercury or mercury-containing products, or both, is prohibited mixture of air (or gas) dispersed in a liquid in which the liquid
by local or national law. Users must determine legality of sales is the major component on a volumetric basis.
3.1.2.1 Discussion—The air (or gas) is in the form of
in their location.
discrete bubbles of about 10 µm to 1000 µm in diameter. The
1.5 This standard does not purport to address all of the
bubbles are not uniformly dispersed. In time, they rise to the
safety concerns, if any, associated with its use. It is the
surface to coalesce to form larger bubbles which break or form
responsibility of the user of this standard to establish appro-
foam. Subsurface coalescence can also occur, in which case,
priate safety, health, and environmental practices and deter-
the bubbles will rise more rapidly.
mine the applicability of regulatory limitations prior to use.
3.1.3 foam, n—in liquids, a collection of bubbles formed in
1.6 This international standard was developed in accor-
or on the surface of a liquid in which the air or gas is the major
dance with internationally recognized principles on standard-
component on a volumetric basis.
ization established in the Decision on Principles for the
3.1.4 gas, n—a fluid (such as air) that has neither indepen-
Development of International Standards, Guides and Recom-
dent shape nor volume but tends to expand indefinitely.
mendations issued by the World Trade Organization Technical
3.1.5 lubricant, n—any material interposed between two
Barriers to Trade (TBT) Committee.
surfaces that reduces friction or wear between them.
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 D02.06 on Analysis of Liquid Fuels and Lubricants. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Nov. 1, 2022. Published November 2022. Originally the ASTM website.
3
approved in 1997. Last previous edition approved in 2017 as D6082 – 12 (2017). Available from Energy Institute, 61 New Cavendish St., London, WIG 7AR,
DOI: 10.1520/D6082-22. U.K., http://www.energyinst.org.uk.
*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 ----------------------
D6082 − 22
FIG. 1 Terminology Diagram
3.1.5.1 Discussion—In this test method, the lubricant is an 3.2.4.1 five-second foam stability, n—the amount of static
oil
...
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: D6082 − 12 (Reapproved 2017) D6082 − 22
Standard Test Method for
High Temperature Foaming Characteristics of Lubricating
1
Oils
This standard is issued under the fixed designation D6082; 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*
1.1 This test method describescovers the procedure for determining the foaming characteristics of lubricating oils (specifically
transmission fluid and motor oil) at 150 °C.
1.2 Foaming characteristics of lubricating oils at temperatures up to 93.5 °C are determined by Test Method D892 or IP 146.
1.3 The values stated in SI units are to be regarded as standard.
1.3.1 Exception—The values given in parentheses are provided for information only.
1.4 WARNING—Mercury has been designated by many regulatory agencies as a hazardous materialsubstance that can cause
central nervous system, kidney and liver damage. serious medical issues. Mercury, or its vapor, may has been demonstrated to be
hazardous to health and corrosive to materials. Caution should be taken Use caution when handling mercury and mercury
containing 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 (SDS) for additional informa-
tion. The potential exists that selling mercury and/or mercury containing products into your state or country may be prohibited by
law.or mercury-containing products, or both, is prohibited by local or national law. Users must determine legality of sales in their
location.
1.5 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.
1.6 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:
D892 Test Method for Foaming Characteristics of Lubricating Oils
E128 Test Method for Maximum Pore Diameter and Permeability of Rigid Porous Filters for Laboratory Use
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
D02.06 on Analysis of Liquid Fuels and Lubricants.
Current edition approved July 1, 2017Nov. 1, 2022. Published July 2017November 2022. Originally approved in 1997. Last previous edition approved in 20122017 as
D6082 – 12.D6082 – 12 (2017). DOI: 10.1520/D6082-12R17.10.1520/D6082-22.
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.
*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 ----------------------
D6082 − 22
E1272 Specification for Laboratory Glass Graduated Cylinders
3
2.2 Energy Institute Standards:
IP 146 Standard Method of Test for Foaming Characteristics of Lubricating Oils
3. Terminology
3.1 Definitions:
3.1.1 diffuser, n—for gas, a device for dispersing gas into a liquid (Test Method D892).
3.1.1.1 Discussion—
Although diffusers can be made of either metallic or non-metallic materials, in this test method the diffuser is sintered stainless
steel.
3.1.2 entrained air (or gas), n—in liquids, a two-phase mixture of air (or gas) dispersed in a liquid in which the liquid is the major
component on a volumetric basis.
3.1.2.1 Discussion—
The air (or gas) is in the form of discrete bubbles of about 10 μm to 1000 μm in diameter. The bubbles are not uniformly dispersed.
In time, they rise to the surface to coalesce to form larger bubbles which break or form foam. Subsurface coalescence can also
occur, in w
...
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