ASTM D2570-96
(Test Method)Standard Test Method for Simulated Service Corrosion Testing of Engine Coolants
Standard Test Method for Simulated Service Corrosion Testing of Engine Coolants
SCOPE
1.1 This test method evaluates the effect of a circulating engine coolant on metal test specimens and automotive cooling system components under controlled, essentially isothermal laboratory conditions.
1.2 This test method specifies test material, cooling system components, type of coolant, and coolant flow conditions that are considered typical of current automotive use.
1.3 The values stated in either SI or inch-pound units are to be regarded as the standard. The values given in parentheses are approximate equivalents for information only.
1.4 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. Specific precautionary statements are given in Section 6.
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Designation: D 2570 – 96 An American National Standard
Standard Test Method for
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Simulated Service Corrosion Testing of Engine Coolants
This standard is issued under the fixed designation D 2570; 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 (e) indicates an editorial change since the last revision or reapproval.
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1. Scope Coolant for Automobile and Light Duty Service
D 4985 Specification for Low Silicate Ethylene Glycol
1.1 This test method evaluates the effect of a circulating
Base Engine Coolant for Heavy Duty Engines Requiring
engine coolant on metal test specimens and automotive cooling
an Initial Charge of Supplemental Coolant Additive
system components under controlled, essentially isothermal
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(SCA)
laboratory conditions.
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2.2 SAE Standard:
1.2 This test method specifies test material, cooling system
SAE J20e Standard for Coolant System Hoses
components, type of coolant, and coolant flow conditions that
are considered typical of current automotive use.
3. Summary of Test Method
1.3 The values stated in either SI or inch-pound units are to
3.1 An engine coolant is circulated for 1064 h at 190°F
be regarded as the standard. The values given in parentheses
(88°C) in a flow loop consisting of a metal reservoir, an
are approximate equivalents for information only.
automotive coolant pump, an automotive radiator, and connect-
1.4 This standard does not purport to address all of the
ing rubber hoses. Test specimens representative of engine
safety concerns, if any, associated with its use. It is the
cooling system metals are mounted inside the reservoir, which
responsibility of the user of this standard to establish appro-
simulates an engine cylinder block. At the end of the test
priate safety and health practices and determine the applica-
period, the corrosion-inhibiting properties of the coolant are
bility of regulatory limitations prior to use. Specific precau-
determined by measuring the mass losses of the test specimens
tionary statements are given in Section 6.
and by visual examination of the interior surfaces of the
2. Referenced Documents components.
2.1 ASTM Standards:
4. Significance and Use
D 1121 Test Method for Reserve Alkalinity of Engine
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4.1 This test method, by a closer approach to engine cooling
Coolants and Antirusts
system conditions, provides better evaluation and selective
D 1176 Test Method for Sampling and Preparing Aqueous
screening of engine coolants than is possible from glassware
Solutions of Engine Coolants or Antirusts for Testing
2 testing (Test Method D 1384). The improvement is achieved by
Purposes
controlled circulation of the coolant, by the use of automotive
D 1177 Test Method for Freezing Point of Aqueous Engine
2 cooling system components, and by a greater ratio of metal
Coolants
3 surface area to coolant volume.
D 1193 Specification for Reagent Water
4.2 Although this test method provides improved discrimi-
D 1287 Test Method for pH of Engine Coolants and Anti-
2 nation, it cannot conclusively predict satisfactory corrosion
rusts
inhibition and service life. If greater assurance of satisfactory
D 1384 Test Method for Corrosion Test for Engine Coolants
2 performance is desired, it should be obtained from full-scale
in Glassware
engine tests (Test Method D 2758) and from field testing in
D 2758 Test Method for Engine Coolants by Engine Dyna-
2 actual service (Practice D 2847).
mometer
4.3 Significance and interpretation of the test and its limi-
D 2847 Practice for Testing Engine Coolants in Car and
2 tations are discussed further in Appendix X1.
Light Truck Service
4.4 If this test method is used as a qualification test for
D 3306 Specification for Ethylene Glycol Base Engine
Specification D 3306 and Specification D 4985, the recom-
mended components listed in Section 5 shall be used. If it is not
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This test method is under the jurisdiction of ASTM Committee D-15 on Engine
being used for such qualification purposes, then suitable
Coolants and is the direct responsibility of Subcommittee D15.09 on Simulated
substitution components may be used, if agreed upon between
Service Tests.
Current edition approved April 10, 1996. Published June 1996. Originally
published as D 2570 – 66 T. Last previous edition D 2570 – 94.
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Annual Book of ASTM Standards, Vol 15.05. Available from Society of Automotive Engineers, 400 Commonwealth Dr.,
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Annual Book of ASTM Standards, Vol 11.01. Warrendale, PA 15096.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
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D 2570
the contracting parties. with coolant recovery tank. An aluminum radiator, GM part
No. 3
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