ASTM D6547-16
(Test Method)Standard Test Method for Corrosiveness of Lubricating Fluid to Bimetallic Couple
Standard Test Method for Corrosiveness of Lubricating Fluid to Bimetallic Couple
SIGNIFICANCE AND USE
4.1 Corrosiveness of a fluid to a bimetallic couple is one of the properties used to evaluate hydraulic or lubricating fluids. It is an indicator of the compatibility of a fluid with a brass on steel galvanic couple at ambient temperature and 50 % relative humidity.
SCOPE
1.1 This test method covers the corrosiveness of hydraulic and lubricating fluids to a bimetallic galvanic couple.
Note 1: This test method replicates Fed-Std No. 791, Method 5322.2. It utilizes the same apparatus, test conditions, and evaluation criteria, but it describes test procedures more explicitly.
1.2 The values stated in SI units are to be regarded as standard.
1.2.1 Exception—The values given in parentheses are for information only.
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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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: D6547 − 16
Standard Test Method for
1
Corrosiveness of Lubricating Fluid to Bimetallic Couple
This standard is issued under the fixed designation D6547; 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* 4. Significance and Use
4.1 Corrosiveness of a fluid to a bimetallic couple is one of
1.1 This test method covers the corrosiveness of hydraulic
the properties used to evaluate hydraulic or lubricating fluids.
and lubricating fluids to a bimetallic galvanic couple.
It is an indicator of the compatibility of a fluid with a brass on
NOTE 1—This test method replicates Fed-Std No. 791, Method 5322.2.
steelgalvaniccoupleatambienttemperatureand50%relative
It utilizes the same apparatus, test conditions, and evaluation criteria, but
humidity.
it describes test procedures more explicitly.
1.2 The values stated in SI units are to be regarded as
5. Apparatus
standard.
5.1 Desiccating Jars, two.
1.2.1 Exception—The values given in parentheses are for
5.2 Magnifier, 10× power.
information only.
5.3 Glass Stirring Rod.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
5.4 Abrasive Papers, silicon-carbide or aluminum oxide
responsibility of the user of this standard to establish appro-
(150, 240, 400, 600 grit, one sheet per disk).
priate safety and health practices and determine the applica-
5.5 Cloth, lint-free, clean, dry.
bility of regulatory limitations prior to use.
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5.6 Chromium Alloy Steel Disks,threeforeachtestsample.
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2. Referenced Documents
5.7 Brass Clips, three for each test sample.
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2.1 ASTM Standards:
6. Reagents and Materials
A322Specification for Steel Bars, Alloy, Standard Grades
6.1 Purity of Reagents—Reagent grade chemicals shall be
2.2 Federal Standards:
used in all tests. Unless otherwise indicated, it is intended that
FED-STD-791, Method 5322.2Corrosiveness of Oil on a
3 all reagents conform to the Committee onAnalytical Reagents
Bimetallic Couple
of the American Chemical Society where such specifications
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are available.
3. Summary of Test Method
6.2 Etching Solution, consisting of distilled water, 450 mL;
3.1 This test method consists of fitting a brass clip to the
nitric acid, concentrated, 225 mL; sulfuric acid, concentrated,
fluid-coated surface of a steel disk, storing the assembly at
300 mL; and hydrochloric acid, concentrated, 8 mL.
approximately 50% relative humidity for ten days, and visu-
6.2.1 To avoid hazardous reactions when preparing the
ally inspecting the assembly for evidence of galvanic corro-
etching solution, place the distilled water (450 mL) in a 1.5L,
sion.
or larger, glass beaker set in a container of ice and water. Stir
1 4
This test method is under the jurisdiction of ASTM Committee D02 on The sole source of supply of the apparatus known to the committee at this time
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of is Metaspec, 790 W. Mayfield Rd., San Antonio, TX 78211. If you are aware of
Subcommittee D02.N0 on Hydraulic Fluids. alternative suppliers, please provide this information to ASTM International
Current edition approved Jan. 1, 2016. Published February 2016. Originally Headquarters.Your comments will receive careful consideration at a meeting of the
1
approved in 2000. Last previous edition approved in 2010 as D6547–00 (2010). responsible technical committee, which you may attend.
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DOI: 10.1520/D6547-16. Reagent Chemicals, American Chemical Society Specifications, American
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Chemical Society, Washington, DC. For Suggestions on the testing of reagents not
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM listed by the American Chemical Society, see Annual Standards for Laboratory
Standards volume information, refer to the standard’s Document Summary page on Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeia
the ASTM website. and National Formulary, U.S. Pharmacopeial Convention, Inc. (USPC), Rockville,
3
Available online at ASSIST Quicksearch (http://quicksearch.dla.mil). MD.
*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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...
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: D6547 − 00 (Reapproved 2010) D6547 − 16
Standard Test Method for
1
Corrosiveness of Lubricating Fluid to Bimetallic Couple
This standard is issued under the fixed designation D6547; 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 covers the corrosiveness of hydraulic and lubricating fluids to a bimetallic galvanic couple.
NOTE 1—This test method replicates Fed-Std No. 791, Method 5322.2. It utilizes the same apparatus, test conditions, and evaluation criteria, but it
describes test procedures more explicitly.
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
1.2.1 Exception—The values given in parentheses are for information only.
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
2
2.1 ASTM Standards:
A322 Specification for Steel Bars, Alloy, Standard Grades
2.2 Federal Standards:
3
Fed-Std No. 791, FED-STD-791, Method 5322.2 Corrosiveness of Oil on a Bimetallic Couple
3. Summary of Test Method
3.1 This test method consists of fitting a brass clip to the fluid-coated surface of a steel disk, storing the assembly at
approximately 50 % relative humidity for ten days, and visually inspecting the assembly for evidence of galvanic corrosion.
4. Significance and Use
4.1 Corrosiveness of a fluid to a bimetallic couple is one of the properties used to evaluate hydraulic or lubricating fluids. It is
an indicator of the compatibility of a fluid with a brass on steel galvanic couple at ambient temperature and 50 % relative humidity.
5. Apparatus
5.1 Desiccating Jars, two.
5.2 Magnifier, 10× power.
5.3 Glass Stirring Rod.
5.4 Abrasive Papers, silicon-carbide or aluminum oxide (150, 240, 400, 600 grit, one sheet per disk).
5.5 Cloth, lint-free, clean, dry.
4
5.6 Chromium Alloy Steel Disks, three for each test sample.
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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.N0.02D02.N0 on Industrial ApplicationsHydraulic Fluids.
Current edition approved Oct. 1, 2010Jan. 1, 2016. Published November 2010February 2016. Originally approved in 2000. Last previous edition approved in 20052010
as D6547–00(2005).D6547 – 00 (2010). DOI: 10.1520/D6547-00R10.10.1520/D6547-16.
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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 Standardization Documents Order Desk, Building 4 Section D, 700 Robbins Avenue, Philadelphia, PA 19111–5904, Attn: NPODS.online at ASSIST
Quicksearch (http://quicksearch.dla.mil).
4
The sole source of supply of the apparatus known to the committee at this time is Metaspec, 790 W. Mayfield Rd., San Antonio, TX 78211. If you are aware of alternative
suppliers, please provide this information to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of the responsible technical
1
committee, which you may attend.
*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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D6547 − 16
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5.7 Brass Clips, three for each test sample.
6. Reagents and Materials
6.1 Purity of Reagents—Reagent grade chemicals shall be used in all tests. Unless otherwise indicated, it is intended that all
reagents conform to the Committee on Analytical Reagents of the American Chemical Society where such specifications are
5
available.
6.2 Etching Solution, consisting of distilled water, 450 mL; nitric acid, concentrated, 225 mL; sulfuric acid, concentrated, 300
mL; and hydrochloric acid, concentrated, 8 mL.
6.2.1 To avoid hazardous reactions when preparing the etching solution, place the distilled water (450 mL) in a 1.5-L,1.5 L, or
larger, glass beaker
...
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