ASTM D6138-23a
(Test Method)Standard Test Method for Determination of Corrosion-Preventive Properties of Lubricating Greases Under Dynamic Wet Conditions (Emcor Test)
Standard Test Method for Determination of Corrosion-Preventive Properties of Lubricating Greases Under Dynamic Wet Conditions (Emcor Test)
SIGNIFICANCE AND USE
5.1 This test method is used to assess the ability of grease to prevent corrosion in rolling bearings operated in the presence of distilled water, sodium chloride solution, or synthetic sea water. It is used for development and specification purposes.
SCOPE
1.1 This test method covers the determination of corrosion-preventive properties of greases using grease-lubricated ball bearings under dynamic wet conditions.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
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.
General Information
Buy Standard
Standards Content (Sample)
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.
Designation: D6138 − 23a
Standard Test Method for
Determination of Corrosion-Preventive Properties of
Lubricating Greases Under Dynamic Wet Conditions (Emcor
1
Test)
This standard is issued under the fixed designation D6138; 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* ISO 3696 Water for analytical laboratory use—
Specifications and test methods
1.1 This test method covers the determination of corrosion-
ISO 7120 Petroleum products and lubricants—Petroleum
preventive properties of greases using grease-lubricated ball
oils and other fluids—Determination of rust-preventing
bearings under dynamic wet conditions.
characteristics in the presence of water
1.2 The values stated in SI units are to be regarded as
4
2.3 EI Standards:
standard. No other units of measurement are included in this
IP 530 Determination of the density of grease—Density cup
standard.
method
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3. Terminology
responsibility of the user of this standard to establish appro-
3.1 Definitions:
priate safety, health, and environmental practices and deter-
3.1.1 For definitions of terms used in this test method, refer
mine the applicability of regulatory limitations prior to use.
to Terminology D4175.
1.4 This international standard was developed in accor-
3.1.2 corrosion, n—the chemical or electrochemical reac-
dance with internationally recognized principles on standard-
tion between a material, usually a metal, and its environment
ization established in the Decision on Principles for the
that produces a deterioration of the material and its properties.
Development of International Standards, Guides and Recom-
3.1.2.1 Discussion—In this test method, corrosion is mani-
mendations issued by the World Trade Organization Technical
fested by red rust or black stains on the bearing race. Stains,
Barriers to Trade (TBT) Committee.
through which the underlying metal surface is still visible, are
not considered corrosion in Test Method D6138 and shall be
2. Referenced Documents
ignored.
2
2.1 ASTM Standards:
3.1.3 lubricating grease, n—a semifluid to solid product of
D665 Test Method for Rust-Preventing Characteristics of
a thickener in a liquid lubricant.
Inhibited Mineral Oil in the Presence of Water
3.1.3.1 Discussion—The dispersion of the thickener forms a
D1193 Specification for Reagent Water
two-phase system and immobilizes the liquid lubricant by
D4175 Terminology Relating to Petroleum Products, Liquid
surface tension and other physical forces. Other ingredients are
Fuels, and Lubricants
commonly included to impart special properties.
3
2.2 ISO Standards:
3.1.4 thickener, n—in lubricating grease, a substance com-
ISO 15 Rolling bearings—Radial bearings—Boundary
posed of finely-divided particles dispersed in a liquid lubricant
dimensions—General plan
to form the product’s structure.
3.1.4.1 Discussion—The thickeners can be fibers (such as
1
This test method is under the jurisdiction of ASTM Committee D02 on various metallic soaps) or plates or spheres (such as certain
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
non-soap thickener), which are insoluble or, at most, only very
Subcommittee D02.G0.06 on Functional Tests - Contamination.
slightly soluble in the liquid lubricant. The general require-
Current edition approved July 1, 2023. Published July 2023. Originally approved
ments are that the solid particles be extremely small, uniformly
in 1997. Last previous edition approved in 2023 as D6138 – 23. DOI: 10.1520/
D6138-23A.
dispersed, and capable of forming a relatively stable, gel-like
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
structure with the liquid lubricant.
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 4
Available from American National Standards Institute (ANSI), 25 W. 43rd St., Available from Energy Institute, 61 New Cavendish St., London, W1G 7AR,
4th Floor, New York, NY 10036, http://www.ansi.org. U.K., http://www.energyinst.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
---------------------- Page: 1 -------------------
...
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: D6138 − 23 D6138 − 23a
Standard Test Method for
Determination of Corrosion-Preventive Properties of
Lubricating Greases Under Dynamic Wet Conditions (Emcor
1
Test)
This standard is issued under the fixed designation D6138; 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*
1.1 This test method covers the determination of corrosion-preventive properties of greases using grease-lubricated ball bearings
under dynamic wet conditions.
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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
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:
D217 Test Methods for Cone Penetration of Lubricating Grease
D665 Test Method for Rust-Preventing Characteristics of Inhibited Mineral Oil in the Presence of Water
D1193 Specification for Reagent Water
D4175 Terminology Relating to Petroleum Products, Liquid Fuels, and Lubricants
3
2.2 ISO Standards:
ISO 15 Rolling bearings—Radial bearings—Boundary dimensions—General plan
ISO 3696 Water for analytical laboratory use—Specifications and test methods
ISO 7120 Petroleum products and lubricants—Petroleum oils and other fluids—Determination of rust-preventing characteristics
in the presence of water
4
2.3 EI Standards:
IP 530 Determination of the density of grease—Density cup method
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.G0.06 on Functional Tests - Contamination.
Current edition approved May 1, 2023July 1, 2023. Published July 2023. Originally approved in 1997. Last previous edition approved in 20192023 as
D6138 – 19.D6138 – 23. DOI: 10.1520/D6138-23.10.1520/D6138-23A.
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 American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
4
Available from Energy Institute, 61 New Cavendish St., London, W1G 7AR, U.K., http://www.energyinst.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
---------------------- Page: 1 ----------------------
D6138 − 23a
3. Terminology
3.1 Definitions:
3.1.1 For definitions of terms used in this test method, refer to Terminology D4175.
3.1.2 corrosion, n—the chemical or electrochemical reaction between a material, usually a metal, and its environment that
produces a deterioration of the material and its properties.
3.1.2.1 Discussion—
In this test method, corrosion is manifested by red rust or black stains on the bearing race. Stains, through which the underlying
metal surface is still visible, are not considered corrosion in Test Method D6138 and shall be ignored.
3.1.3 lubricating grease, n—a semifluid to solid product of a thickener in a liquid lubricant.
3.1.3.1 Discussion—
The dispersion of the thickener forms a two-phase system and immobilizes the liquid lubricant by surface tension and other
physical forces. Other ingredients are commonly included to impart special properties. D217
3.1.4 thickener, n—in lubricating grease, a substance composed of finely-divided particles dispersed in a liquid lubricant to form
the product’s structure.
3.1.4.1 Discussion—
The thickeners can be fibers (such as various metallic soaps) or plates or spheres (such as certain non-soap thickener), which are
insoluble or, at mo
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.