ASTM D7935-20
(Test Method)Standard Test Method for Corrosion Test for Non-Aqueous Engine Coolants in Glassware
Standard Test Method for Corrosion Test for Non-Aqueous Engine Coolants in Glassware
SIGNIFICANCE AND USE
4.1 This test method will generally distinguish between non-aqueous coolants that are definitely deleterious from the corrosion standpoint and those that are suitable for further evaluation. However, the results of this test method cannot stand alone as evidence of satisfactory corrosion inhibition. The actual service value of an engine coolant formulation can be determined only by more comprehensive bench, dynamometer, and field tests.
SCOPE
1.1 This test method covers a simple beaker-type procedure for evaluating the effects of non-aqueous engine coolants on metal specimens under controlled laboratory conditions (see Appendix X1).
Note 1: For more information on aqueous and non-aqueous engine coolants, see (Refs 1-9).2
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered 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. Some specific hazards statements are given in 10.1.7.2, 10.1.7.3, and 10.1.7.4.
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
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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: D7935 − 20
Standard Test Method for
Corrosion Test for Non-Aqueous Engine Coolants in
1
Glassware
This standard is issued under the fixed designation D7935; 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 tions of Engine Coolants orAntirusts forTesting Purposes
D1384 Test Method for Corrosion Test for Engine Coolants
1.1 This test method covers a simple beaker-type procedure
in Glassware
for evaluating the effects of non-aqueous engine coolants on
E1 Specification for ASTM Liquid-in-Glass Thermometers
metal specimens under controlled laboratory conditions (see
E178 Practice for Dealing With Outlying Observations
Appendix X1).
E230/E230M Specification for Temperature-Electromotive
NOTE 1—For more information on aqueous and non-aqueous engine
Force (emf) Tables for Standardized Thermocouples
2
coolants, see (Refs 1-9).
4
2.2 ASTM Adjunct:
1.2 The values stated in SI units are to be regarded as
All-glass apparatus for corrosion test (2 drawings)
standard. The values given in parentheses after SI units are
provided for information only and are not considered standard.
3. Summary of Test Method
1.3 This standard does not purport to address all of the
3.1 In this test method, specimens of metals typical of those
safety concerns, if any, associated with its use. It is the
present in engine cooling systems are totally immersed in
responsibility of the user of this standard to establish appro-
aerated engine coolant solutions for 336 h at 96 °C (205 °F).
priate safety, health, and environmental practices and deter-
The corrosion-inhibitive properties of the test solution are
mine the applicability of regulatory limitations prior to use.
evaluated on the basis of the weight changes incurred by the
Some specific hazards statements are given in 10.1.7.2,
specimens.Eachtestisrunintriplicate,andtheaverageweight
10.1.7.3, and 10.1.7.4.
change is determined for each metal. A single test may
1.4 This international standard was developed in accor-
occasionally be completely out of line (see 11.3).
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
4. Significance and Use
Development of International Standards, Guides and Recom-
4.1 This test method will generally distinguish between
mendations issued by the World Trade Organization Technical
non-aqueous coolants that are definitely deleterious from the
Barriers to Trade (TBT) Committee.
corrosion standpoint and those that are suitable for further
evaluation. However, the results of this test method cannot
2. Referenced Documents
stand alone as evidence of satisfactory corrosion inhibition.
3
2.1 ASTM Standards:
The actual service value of an engine coolant formulation can
B32 Specification for Solder Metal
be determined only by more comprehensive bench,
B36/B36M Specification for Brass Plate, Sheet, Strip, And
dynamometer, and field tests.
Rolled Bar
D1176 Practice for Sampling and Preparing Aqueous Solu-
5. Apparatus
5.1 Container, a 1000 mL, tall-form, spoutless beaker, made
1 of heat-resistant glass, for containing the non-aqueous engine
This test method is under the jurisdiction ofASTM Committee D15 on Engine
Coolants and Related Fluids and is the direct responsibility of Subcommittee coolantsolutionandtestspecimens.Thebeakershallbetightly
D15.22 on Non-Aqueous Coolants.
closed with a No. 15 rubber stopper, having drill holes to
Current edition approved June 1, 2020. Published June 2020. Originally
accommodate a water condenser, an aerator tube, and a
approved in 2014. Last previous edition approved in 2014 as D7935/D7935M–14.
temperature measuring instrument as shown in Fig. 1.
DOI: 10.1520/D7935-20
4
2
The boldface numbers in parentheses refer to the list of references at the end of
Optionally, an all-glass apparatus may be used.
this standard.
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
4
Standards volume information, refer to the standard’s Document Summary page on Available from ASTM International Headquarters. Order Adjunct No.
the ASTM website. ADJD1384. Original adjunct produced in 1980.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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D7935 − 20
FIG. 1 Metal Specimens and Equipment for 336
...
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: D7935/D7935M − 14 D7935 − 20
Standard Test Method for
Corrosion Test for Non-Aqueous Engine Coolants in
1
Glassware
This standard is issued under the fixed designation D7935/D7935M;D7935; 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 a simple beaker-type procedure for evaluating the effects of non-aqueous engine coolants on metal
specimens under controlled laboratory conditions (see Appendix X1).
2
NOTE 1—For more information on aqueous and non-aqueous engine coolants, see (Refs 1-9).
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used
independently of the other, and values from the two systems shall not be combined. Some values have only SI units because the
inch-pound equivalents are not used in practice.given in parentheses after SI units are provided for information only and are not
considered 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use. Some specific hazards statements are given in 10.1.7.2, 10.1.7.3, and 10.1.7.4.
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
3
2.1 ASTM Standards:
B32 Specification for Solder Metal
B36/B36M Specification for Brass Plate, Sheet, Strip, And Rolled Bar
D1176 Practice for Sampling and Preparing Aqueous Solutions of Engine Coolants or Antirusts for Testing Purposes
D1384 Test Method for Corrosion Test for Engine Coolants in Glassware
E1 Specification for ASTM Liquid-in-Glass Thermometers
E178 Practice for Dealing With Outlying Observations
E230/E230M Specification for Temperature-Electromotive Force (emf) Tables for Standardized Thermocouples
4
2.2 ASTM Adjunct:
All-glass apparatus for corrosion test (2 drawings)
3. Summary of Test Method
3.1 In this test method, specimens of metals typical of those present in engine cooling systems are totally immersed in aerated
engine coolant solutions for 336 h at 96°C [205°F].96 °C (205 °F). The corrosion-inhibitive properties of the test solution are
evaluated on the basis of the weight changes incurred by the specimens. Each test is run in triplicate, and the average weight change
is determined for each metal. A single test may occasionally be completely out of line (see 11.3).
1
This test method is under the jurisdiction of ASTM Committee D15 on Engine Coolants and Related Fluids and is the direct responsibility of Subcommittee D15.22 on
Non-Aqueous Coolants.
Current edition approved June 1, 2014June 1, 2020. Published August 2014June 2020. Originally approved in 2014. Last previous edition approved in 2014 as
D7935/D7935M–14. DOI: 10.1520/D7935_D7935M–1410.1520/D7935-20
2
The boldface numbers in parentheses refer to the list of references at the end of this standard.
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’sstandard’s Document Summary page on the ASTM website.
4
Available from ASTM International Headquarters. Order Adjunct No. ADJD1384. Original adjunct produced in 1980.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D7935 − 20
4. Significance and Use
4.1 This test method will generally distinguish between non-aqueous coolants that are definitely deleterious from the corrosion
standpoint and those that are suitable for further evaluation. However, the results of this test method cannot stand alone as evidence
of satisfactory corrosion inhibition. The a
...
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