ASTM D2511-20

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Designation: D2511 − 93 (Reapproved 2019) D2511 − 20
Standard Test Method for
Thermal Shock Sensitivity of Solid Film Lubricants
This standard is issued under the fixed designation D2511; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope Scope*
1.1 This test method covers the measurement of the resistance of dry solid film lubricants to deterioration when subjected to
temperature extremes.
1.2 The values stated in SI units are to be regarded as the standard. The inch-pound units 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, 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
2.1 ASTM Standards:
A167 Specification for Stainless and Heat-Resisting Chromium-Nickel Steel Plate, Sheet, and Strip (Withdrawn 2014)
D2510 Test Method for Adhesion of Solid Film Lubricants
D4175 Terminology Relating to Petroleum Products, Liquid Fuels, and Lubricants
2.2 U.S. Federal Specification:
P-D-680 Dry Cleaning Solvent
3. Terminology
3.1 Definitions:
3.1.1 lubricant, n—any material interposed between two surfaces that reduces the friction or wear between them (see Terminology
wear, or both, between them.D4175).
3.2 Definitions of Terms Specific to This Standard:
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.L0.05 on Solid Lubricants.
Current edition approved May 1, 2019Dec. 1, 2020. Published June 2019December 2020. Originally approved in 1966. Last previous edition approved in 20142019 as
D2511 – 93 (2014).(2019). DOI: 10.1520/D2511-93R19.10.1520/D2511-20.
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*A Summary of Changes section appears at the end of this standard
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D2511 − 20
3.2.1 dry solid film lubricant, n—on a steel surface, one consisting of friction-reducing powders bonded in tight matrix to the
surface of the metal.
4. Summary of Test Method
4.1 A steel panel having the solid film lubricant deposited on one surface is subjected to 260 °C (500 °F) heat followed by
immediate exposure to −54 °C (−65 °F). The solid film is then examined for cracking, flaking, blistering, or other evidence of
thermal instability.
5. Significance and Use
5.1 Solid lubricant coatings are applied to surfaces that are exposed to heat and cold to such a degree that in many cases liquid
lubricants are not practical. Adherence under these conditions is mandatory to preserve the bearing surfaces during sliding motion.
6. Apparatus
6.1 Oven, capable of maintaining a temperature at 260 °C 6 5.5 °C (500 °F 6 10 °F) and 149 °C 6 5.5 °C (300 °F 6 10 °F)
(forced circulation).
6.2 Sub-Zero Cabinet, capable of maintaining a constant
...