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ASTM D2625-94(1998)

(Test Method)

Standard Test Method for Endurance (Wear) Life and Load-Carrying Capacity of Solid Film Lubricants (Falex Pin and Vee Method)

Standard Test Method for Endurance (Wear) Life and Load-Carrying Capacity of Solid Film Lubricants (Falex Pin and Vee Method)

SCOPE
1.1 This test method  covers the determination of the endurance (wear) life and load-carrying capacity of dry solid film lubricants in sliding steel-on-steel applications.  
1.2 The values stated in SI units are to be regarded as the standard except where equipment is supplied using inch-pound units and would then be regarded as standard. The metric equivalents of inch-pound units given in such cases in the body of the standard may be approximate.  
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.

General Information

Status
Historical
Publication Date
09-Nov-1998
ICS
75.100 - Lubricants, industrial oils and related products
Technical Committee
D02 - Petroleum Products, Liquid Fuels, and Lubricants
Drafting Committee
D02.L0.05 - Solid Lubricants
Current Stage
Ref Project

Relations

Replaced By
ASTM D2625-94(2003) - Standard Test Method for Endurance (Wear) Life and Load-Carrying Capacity of Solid Film Lubricants (Falex Pin and Vee Method)
Effective Date
01-Nov-2003

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ASTM D2625-94(1998) - Standard Test Method for Endurance (Wear) Life and Load-Carrying Capacity of Solid Film Lubricants (Falex Pin and Vee Method)ASTM D2625-94(1998) - Standard Test Method for Endurance (Wear) Life and Load-Carrying Capacity of Solid Film Lubricants (Falex Pin and Vee Method)
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ASTM D2625-94(1998) - Standard Test Method for Endurance (Wear) Life and Load-Carrying Capacity of Solid Film Lubricants (Falex Pin and Vee Method)
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact
ASTM International (www.astm.org) for the latest information.
Designation: D 2625 – 94 (Reapproved 1998) An American National Standard
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Method for
Endurance (Wear) Life and Load-Carrying Capacity of Solid
1
Film Lubricants (Falex Pin and Vee Method)
This standard is issued under the fixed designation D 2625; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 3. Terminology
2
1.1 This test method covers the determination of the 3.1 Definition:
endurance (wear) life and load-carrying capacity of dry solid 3.1.1 dry solid film lubricants—dry coatings consisting of
film lubricants in sliding steel-on-steel applications. lubricating powders in a solid matrix bonded to one or both
1.2 The values stated in SI units are to be regarded as the surfaces to be lubricated.
standard except where equipment is supplied using inch-pound 3.2 Definitions of Terms Specific to This Standard:
units and would then be regarded as standard. The metric 3.2.1 endurance (wear) life—the length of test time before
equivalents of inch-pound units given in such cases in the body failure under a constant loaded condition, in minutes, in which
of the standard may be approximate. the applied test lubricant performs its function.
1.3 This standard does not purport to address all of the 3.2.2 load carrying capacity—the highest indicated load
safety concerns, if any, associated with its use. It is the sustained for a minimum of 1 min.
responsibility of the user of this standard to establish appro- 3.2.3 gage load, n—the value obtained from the gage while
priate safety and health practices and determine the applica- running the test after being corrected to the standard curve
bility of regulatory limitations prior to use. using the calibration procedure for the 4500-lbf (20 000-N)
reference gage.
2. Referenced Documents
3.2.3.1 Discussion—The gage reading is irrespective of the
2.1 ASTM Standards:
particular gage used, and corrections are made by comparison
B 16 Specification for Free-Cutting Brass Rod, Bar, and to the Brinell ball impression diameters on a standard reference
3
Shapes for Use in Screw Machines
copper test coupon with a Rockwell hardness range of HB 37
7
F 22 Test Method for Hydrophobic Surface Films by the to HB 39. An electronic calibration instrument is available
4
Water-Break Test
which can be used in place of the copper coupon.
5
2.2 U.S. Military Specifications: 3.2.4 direct load, n—the load that is applied linearly,
MIL-P-16232F Phosphate Coatings, Heavy, Manganese or
bisecting the angle of the vee block corrected to either the
Zinc Base (for Ferrous Metals) 800-lbf (3550-N) gage reference or the 3000-lbf (13 300-N)
MIL-L-8937
gage reference.
6
2.3 Other Standards: 3.2.4.1 Discussion—This load is equivalent to the true load
42USC7671a Clean Air Act Ammendments of 1990 times the cos 42°.
Federal Test Methods 791a, Methods 3807 and 3812.
4. Summary of Test Method
4.1 The endurance test (Procedure A) consists of running
two stationary steel vee block specimens loaded to a predeter-
1
This test method is under the jurisdiction of ASTM Committee D-2 on
mined value against a rotating steel pin specimen. The endur-
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
D02.L0.05 on Solid Lubricants.
ance (wear) life is determined when the torque increases by 10
Current edition approved July 15, 1994. Published September 1994. Originally
in·lbf (1.13 N·m).
published as D2625 – 67 T. Last previous edition D2625 – 90.
2
4.2 The load-carrying capacity test (Procedure B) consists
Reference may be made to Coordinating Research Council, Inc. (CRC) Report
No. 419, “Development of Research Technique for Measuring Wear Life of Bonded of running two stationary steel vee block specimens against a
Solid Lubricant Coatings for Airframes, Using the Falex Tester.” Also to Military
rotating steel pin, increasing the load on the pin until a sharp
Specification MIL-L-8937 (ASG), Jan. 22, 1963, and Methods 3807 and 3812 of
Federal Test Method Standard No. 791a.
3
Annual Book of ASTM Standards, Vol 02.01.
4 7
Annual Book of ASTM Standards, Vol 15.03. The Falex Pin and Vee Block Test machine available from Falex Corp., 1020
5
Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700 Airpark Dr., Sugar Grove, IL 60554 has been found satisfactory for this purpose. A
Robbins Ave., Philadelphia, PA 19111-5094, Attn
...

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5.1 The low-temperature, low-shear-rate viscosity of automatic transmission fluids, gear oils, torque and tractor fluids, and industrial and automotive hydraulic oils (see Appendix X4) are of considerable importance to the proper operation of many mechanical devices. Measurement of the viscometric properties of these oils and fluids at low temperatures is often used to specify their acceptance for service. This test method is used in a number of specifications.  
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1.4.2 The viscosity data used for Procedure D precision study was from 6400 mPa·s to 256 000 mPa·s at test temperatures of –26 °C and –40 °C.  
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement ar...

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5.1 Periodic sampling and analysis of lubricants have long been used as a means to determine overall machinery health. Atomic emission (AE) and atomic absorption (AA) spectroscopy are often employed for wear metal analysis (for example, Test Method D5185). A number of physical property tests complement wear metal analysis and are used to provide information on lubricant condition (for example, Test Methods D445, D2896, and D6304). Molecular analysis of lubricants and hydraulic fluids by FT-IR spectroscopy produces direct information on molecular species of interest, including additives, fluid breakdown products and external contaminants, and thus complements wear metal and other analyses used in a condition monitoring program (1, 2-6).
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1.2 This practice is based on trending and distribution response analysis from mid-infrared absorption measurements. While calibration to generate physical concentration units may be possible, it is unnecessary or impractical in many cases. Warning or alarm limits (the point where maintenance action on a machine being monitored is recommended or required) can be determined through statistical analysis, history of the same or similar equipment, round robin tests or other methods in conjunction with correlation to equipment performance. These warning or alarm limits can be a fixed maximum or minimum value for comparison to a single measurement or can also be based on a rate of change of the response measured (1) .2 This practice describes distributions but does not preclude using rate-of-change warnings and alarms.
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1.3 Spectra and distribution profiles presented herein are for illustrative purposes only and are not to be construed as representing or establishing lubricant or machinery guidelines.  
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1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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1.3 This test method provides a preliminary or first order evaluation of oil/elastomer compatibility only. Because seals might be subjected to static or dynamic loads, or both, and they can operate over a range of conditions, a complete evaluation of the potential sealing performance of any elastomer-oil combination in any service condition usually requires tests additional to those described in this test method.  
1.4 The several reference elastomer formulations specified in this test method were chosen to be representative of those used in both heavy-duty diesel engines (detailed in Annex A1) and passenger-car spark-ignition engines (the latter are covered in Annex A2). The procedures described in this test method can, however, also be used to evaluate the compatibility of automotive engine oils with different elastomer types/formulations or different test durations and temperatures to those employed in this test method.
Note 2: In such cases, the precision and bias statement in Section 12 does not apply. In addition to agreeing acceptable limits of precision, where relevant, the user and supplier should also agree:  (1) test temperatures and immersion times to be used; (2) the formulations and typical properties of the elastomers; and (3) the sourcing and quality control of the elastomer sheets.
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1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
1.3.1 Exception—The exception to this will be where units of references were developed by the developers of the test equipment and necessary to report the results of the test.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 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.

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ASTM
ASTM D7922-23(Test Method)
Standard Test Method for Determination of Glycol for In-Service Engine Oils by Gas Chromatography

SIGNIFICANCE AND USE
5.1 Some glycol/antifreeze dilution of in-service engine oil is normal under typical operating conditions. However, excessive glycol dilution can lead to decreased performance, premature wear, or sudden engine failure. This test method provides a means of quantifying the level of glycol based antifreeze dilution, allowing the user to take necessary action.
SCOPE
1.1 This test method covers the determination of glycol based antifreeze for in-service engine oil by derivative headspace/gas chromatography.  
1.2 Sample is derivatized in-situ directly in a headspace sampling vial prior to vapor phase extraction and injection into a gas chromatograph.  
1.3 The chemistry of the derivatization is unique to the detection of the molecules of ethylene glycol and 1,2-propylene glycol. 1,3-propylene glycol could also be detected but is not used in any known anti-freeze at this time. Other coolant analyses are beyond the scope of this test method.  
1.4 The derivatization process does not affect glycol breakdown products such as glycolate and formate and hence the presence of these compounds in the oil will not be quantified.  
1.5 The test method concentration range is from 50 µg/g to 1000 µg/g. Lower levels are possible by method modifications. Higher levels are possible through sample dilution.  
1.6 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.7 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.  
1.8 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.

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