1、I METRIC I DOD-L-85645A 15 October 1988 SUPERSEDING 30 December 1985 DOD-L-85645 MILITARY SPECIFICATION LUBRICANT, DRY THIN FILM, MOLECULAR BONDED This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification establishes t
2、he requirements for two types of dry thin film lubricants to reduce wear and to prevent galling and seizure of metals. 1.2 Classification. The lubricant.shal1 be of the following types, as specified (see 6.2.b): Type I - no binders Type II - bi nders 2. APPLICABLE DOCUMENTS 2.1 Government documents.
3、 o 2.1.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this specification to the extent specified herein. Unless otherwise specified, the issues of these documents shall be those listed in the issue of the Department of Defense Index
4、of Specifications and Standards (DORISS) and supplement thereto, cited in the solicitation. SPECIFICATIONS FEDERAL QQ-A-25015 - Aluminum Alloy, Alclad 2024; Plate and Sheet MILITARY MIL-S-5059 - Steel, Corrosion-Resistant (18-81, Plate, Sheet and Strip MIL-A-8625 - Anodic Coatings, for Aluminum and
5、Aluminum Alloys Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed .to: Systems Engineering and Standardization Department (Code 931, Naval Air Engineering Center Lakehurst, NJ 08733-5100, by using the
6、 self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. MSC NIA FSC 9150 DISTRIBUTION STATEMENT A. Approved for-public release; distribution is unlimited. THIS DOCUMENT CONTAINS /o - PAGES. - -: Provided by IHSNot for ResaleNo
7、reproduction or networking permitted without license from IHS-,-,-DOD-L-85645A STANDARDS FEDERAL FED-STD-313 - Material Safety Data Sheets Preparation and Submission of MILITARY MIL-STD-290 - Packaging of Petroleum and Related Products (Copi es of specifications, standards, drawings and publ i catio
8、ns required by manufacturers in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting off i Cer. 1 2.1.2 Other Government documents, drawings, and publications. The fol lowing other Government documents, drawings, and publ i
9、 cations form a part of this specification to the extent specified herein. Unless otherwise specified, the issues shall be those in effect on the date of the solicitation. PUBLICATIONS CODE OF FEDERAL REGULATIONS 49 CFR - Transportation - Hazardous Materials (Application for copies should be address
10、ed to the Superintendent of Documents, Government Printing Office, Washington, DC 20402.) 2.2 Other publications. The following documents form a part of this specification to the extent specified herein. Unless otherwise specified, the issues of the documents which are DOD adopted shall be those lis
11、ted in the issue of the DODISS specified in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS shall be the issue of the non-government documents which is current on the date of the sol ici tation, AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM D 1
12、186 - Nondestructive Measurement of Dry Film Thickness of Nonmagnetic Coatings Applied to a Ferrous Base ASTM D 2510 - Adhesion of Solid Film Lubricants ASTM D 251 1 - Lubricants, Film, Dry Sol id, Thermal Shock, Sensi tivi ty of ASTM D 2649 - Corrosion Characteristics of Solid Film Lubricants (Appl
13、lcations for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DOD-L-85b45A 71 W 7777706 OLL22L14 L W DOD-L-85645A AMERICAN NA AN
14、SI 2129 TIONAL STANDARDS INSTITUTE (ANSI) .1 - American National Standards for the Precautionary Labeling of Hazardous Industrial Chemicals (Applications for copies should be addressed to the American National Standards Institute, 1430 Broadway, New York, NY 10018.) (Non-government standards and oth
15、er publications are normally available from the organizations which prepare or which distribute the documents. These documents also may be available in or through libraries or other informational servi ces.) 2.3 Order of precedence. In the event of a conflict between the text of this specification a
16、nd the references cited herein, the text of this specification shall take precedence. 3. REQUIREMENTS 3.1 First article. When specified, a sample shall be subjected to first article inspection (see 4.3 and 6.3). 3.2 Materials. The material shall consist of tungsten disulfide (WS2) in a lamellar form
17、, modified as required to meet the requirements of this specification. The material shall have no organic constituents, so as to be compatible in liquid oxygen systems and hard radiation environments. Type I binders, or additives. Type II shall contain a suitable binder as required to meet the requi
18、rements of this specification. The material shall not contain graphite or powdered metal (see 4.5.7). shall bond instantly to the surface of the substrate without the use of heat, 3.3 Film appearance and thickness. The bonded dry film lubricant shall appear uniform in color, smooth, free of cracks,
19、scratches, pinholes, blisters, bubbles, runs, sags, foreign matter, grit, rough particles, . separation of ingredients, or other surface imperfections (see 4.3.1). The film thickness shall be between 0.00038 and 0.00051 mm for type I and not greater than .O025 mm for type II (see 4.5.2). 3.4 Thermal
20、 stability. The bonded dry film lubricant shall not flake, crack, blister nor soften in a temperature environment ranging from -200C to +482“C (see 4.5.3). 3.5 Film adhesion. There shall be no evidence of stripping or lifting of the lubricant coating from the substrate when subjected to the tape tes
21、t (see 4.5.4). 3.6 Coefficient of friction. The coating shall have a coefficient of friction of no more than 0.030 when tested in accordance with 4.5.5. 3.7 Aluminum corrosion resistance. When subjected to heat and high humidity for at least 500 hours, the bonded dry film lubricant on anodized alumi
22、num panels shall not show discoloration, pitting, formation of white deposits, or other evidence of corrosion (see 4.5.6). 3 /“-c Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DOD-L-85645A 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for insp
23、ection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of al 1 inspection requirements as specified herein. Except as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitabl
24、e for the performance of the inspection requirements specified herein, un1 ess di sapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure suppl ies and services conform to pr
25、escribed requirements. of sections 3 and 5. The inspection set forth in this specification shall become a part of the contractors overall inspection system or quality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of as
26、suring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract. Sampling in quality conformance does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to acceptance of defe
27、ctive material. 4.1.1 Responsibility for compliance. All items must meet all requirements 4.2 Classification of inspections. The examination and testing requirements shall be classified as follows: a. First article inspection (see 4.3) b. Quality conformance inspection (see 4.4) 4.3 First article in
28、spection. The first article inspection shall consist of review and approval of the test results (see 4.3.2) and performance of all tests or examinations to determine that the first article sample (see 4.3.1) complies with all the requirements of this specification when tested in accordance with the
29、inspection methods specified. Delivery will be deferred pending completion of the first article inspection. If the results of the first article inspection are in accordance with the requirements of this specification, the consistency of production quality will be thereby verified. Failure of the lub
30、ricant to pass first article inspection shall consti tute fai lure of the entire lot or batch. 4.3.1 First article samples. Samples of the bonded lubricant shall be furnished by the supplier in sufficient quantity to make all of the determinations specified herein. Duplicate specimens shall be requi
31、red for all tests. The test panels and approximate dimensions shall be as specified in 4.4.2. The panels shall be fully coated, except for two of the steel panels which shall have the lubricant applied in a 2.54 cm strip on only one side to enable measurement of film thickness. The first article sam
32、ples shall be forwarded to the Aircraft and Crew Systems. Technology Directorate, Code 60612, Naval Air Development Center, Warminster, PA 18974. The samples shall be plainly identified by securely attached durable tags or labels marked with the fol lowing information: Provided by IHSNot for ResaleN
33、o reproduction or networking permitted without license from IHS-,-,-DOD-L-85645A I Sample for first article inspection LUBRICANT, DRY THIN FILM, MOLECULAR BONDED Specification DOD-L-85645A Name of manufacturer Product code number Date of manufacture Contract or purchase order Batch number 4.3.2 Cert
34、ification and test results. When requested by the procuring activity, certification by the manufacturer, accompanied by test results shall be submjtted to the first-article inspection laboratory (see 4.3.1). The manufacturer shall supply certified test results containing complete test data showing t
35、hat the samples of the bonded lubricant submitted for first article inspection conforms to the requirements of this specification (see 6.2.e). 4.4 Quality conformance inspection. The quality conformance inspection shall consist of tests of samples from 4.4.2 in accordance with Table I. Samples shall
36、 be labeled completely with information specified in 4.3.1. 4.4.1 Lot and batch. A lot shall consist of the material produced by one manufacturer under essentially the same manufacturing conditions. Each batch shall constitute a lot. I 4.4.2 Quality conformance samples. Test panel specimens shall be
37、 made from aluminum alloy conforming to QQ-A-250/5 and anodized to conform to MIL-A-8625, Type I, measuring approximately .O51 x 7.62 x 15.24 cm; and corrosion resistant steel conforming to MIL-S-5059, composition 321, condition-annealed, finish No. 2 dull, measuring approximately .O91 x 7.62 x 15.2
38、4 cm. Only one side of each panel shall be fully coated, except for two of the anodized aluminum panels which shall have the lubricant applied to a 2.54 cm wide strip to enable measurement of film thickness. For application procedure see Appendix. 4.5 Test methods. Unless otherwise specified, all ex
39、amination and tests shall be performed at a temperature of 25 2 3C and at a relative humidity between 45 and 55 percent. 4.5.1 Film appearance. The bonded dry film lubricant specimens shall be examined visually and microscopically at a magnification of 12X for uniformity in color, smoothness and evi
40、dence of cracks, scratche.s, pinholes, blisters, bubbles, runs, sags, foreign matter, grit, rough particles, separation of . ingredients, and any other surface imperfections. 4.5.2 Film thickness. The thickness of the lubricant coating shall be determined in accordance with ASTM D 1186. 4.5.3 Therma
41、l stability. The bonded dry film lubricant shall be tested for thermal stability in accordance with ASTM D-2511, Condensation shall be removed with clean, dry, compressed air. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DOD-L-85645A 4.5.4 Film ad
42、hesion. The bonded dry film lubricant shall be tested for film adhesion in accordance with ASTM D-2510, Procedure B. 4.5,5 Coefficient of friction. The coefficient of friction for the bonded lubricant shall be determined using the inclined plane technique. One surface of a one inch thick stainless s
43、teel metal block having a Rockwell hardness of 58-60 HRC shall be coated. The surface of an adjustable inclined plane with the lubricant shall be coated in accordance with the mar :facturers recommended practice. The roughness of these surfaces cafore coating shall not exceed seven micro inches rms.
44、 The block shall be placed on the inclined plane so that the two coated surfaces are in contact with one another. By varying the angle of repose, O, the angle at which the block begins to slide shall be determined. Using the formula below, the coefficient of friction, f shall be determined. f = tan
45、O (reference, graphite = 0.07) 4,5,6 Aluminum corrosion resistance. The bonded dry film lubricant shall be tested in accordance with ASTM D-2649 to determine aluminum corrosion resistance. 4,5.7 Graphite and powdered metal. The contractor shall submit to the contracting officer (see 4,3.1) a notariz
46、ed certification by a responsible official of its management, attesting that no graphite, powdered metal, or organic material is present in the bonded lubricant. 5. PACKAGING 5,l Packaging requirements. This section is not applicable to this specification. 6. NOTES 6.1 Intended use. The lubricant is
47、 intended for use on aluminum, aluminum alloys, copper and copper alloys, steel and stainless steel, titanium, and chromium and nickel bearing surfaces and over all platings. Test data generated by this specification is specific to aluminum and stainless steel. The user should investigate the integr
48、ity of the lubricant for protecting other metal surfaces. The lubricant is useful under the following conditions: a. Worn surfaces originally coated with lubricant conforming to DOD-L-85645, b. For rotary and sliding motion applications such as ball, roller, sleeve and spheri cal bearings, fasteners
49、, tracks, hinges, threads, cams, gears, shafts, pins, sleeves, bushings, gauges, rails, springs, saws, knives, punches, draw forming dies, cutter and tooling for release of molded plastic. c. With conventional lubricants or where conventional lubricants cannot be used because of anticipated temperature extremes of -200C to +482“C, +1316“C vacuum, or with liquid oxygen, hard radiation or electrical items, or where other lubricants may be easily contaminated with dirt
