1、PERFORMANCE SPECIFICATIONLUBRICANT, SOLID FILM, EXTREME ENVIRONMENT,NATO CODE NUMBER S-1737This specification is approved for use by all Departments and Agencies of the Department ofDefense.1. SCOPE1.1 Scope . This specification covers the requirements for one grade of a solid film lubricantfor use
2、at temperatures ranging from -185 to 400 C. This solid film lubricant is identified byNATO symbol S-1737.2. APPLICABLE DOCUMENTS2.1 General . The documents listed in this section are specified in sections 3 and 4 of thisspecification. This section does not include documents cited in other sections o
3、f this specificationor recommended for additional information or as examples. While every effort has been made toensure the completeness of this list, document users are cautioned that they must meet allspecified requirements documents cited in sections 3 and 4 of this specification, whether or nott
4、hey are listed.AMSC N/A FSC 9150DISTRIBUTION STATEMENT A . Approved for public release; distribution is unlimited.METRICMIL-PRF-81329D18 September 1998SUPERSEDINGMIL-L-81329C8 August 1984Beneficial comments (recommendations, additions, deletions) and any pertinent data whichmay be of use in improvin
5、g this document should be addressed to : Commander, Naval AirWarfare Center Aircraft Division, Code 414100B120-3, Highway 547, Lakehurst, NJ08733-5100, by using the Standardization Document Improvement Proposal (DD Form1426) appearing at the end of this document or by letter.Provided by IHSNot for R
6、esaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-81329D22.2 Government documents .2.2.1 Specifications . The following specifications form a part of this document to the extentspecified herein. Unless otherwise specified, the issues of these documents are those liste
7、d in theissue of the Department of Defense Index of Specifications and Standards ( DoDISS) andsupplement thereto, cited in the solicitation (see 6.2).SPECIFICATIONSFEDERALQQ-A-250/5 - Aluminum Alloy Alclad 2024, Plate and Sheet.TT-N-95 - Naphtha ; Aliphatic.DEPARTMEN T OF DEFENSEMIL-M-3070 - Mixer,
8、Liquid, Revolving-Shaft and Agitator Types.MIL-A-8625 - Anodic Coatings, for Aluminum and Aluminum Alloys.(Unless otherwise indicated, copies of the above specifications are available from theStandardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia,PA 19111-5094.)2.3 Non-Go
9、vernment publications . The following documents form a part of this documentto the extent specified herein. Unless otherwise specified, the issues of the documents which areDoD adopted are those listed in the issue of the DoDISS cited in the solicitation. Unlessotherwise specified, the issues of doc
10、uments not listed in the DoDISS are the issues of thedocuments cited in the solicitation (see 6.2).AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)ASTM-D2510 - Adhesion of Solid Film Lubricants, Standard Test Methodfor. ( DoD adopted)ASTM-D2511 - Thermal Shock Sensitivity of Solid Film Lubricants,S
11、tandard Test Method for. ( DoD adopted)ASTM-D2625 - Endurance (Wear) Life and Load-Carrying Capacity of SolidFilm Lubricants ( Falex Pin and Vee Method), Standard TestMethod for. ( DoD adopted)ASTM-D4057 - Manual Sampling of Petroleum and Petroleum Products,Standard Practice for. ( DoD adopted)ASTM-
12、D4177 - Automatic Sampling of Petroleum and Petroleum Products,Standard Practice for. ( DoD adopted)Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-81329D3(Application for copies should be addressed to the American Society for Testing andMate
13、rials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.)SOCIETY OF AUTOMOTIVE ENGINEERS, INC. (SAE)SAE-AMS5510 - Steel, Corrosion and Heat Resistant, Sheet, Strip, and Plate18Cr - 10.5Ni-0.40Ti (SAE 30321) Solution Heat Treated.( DoD adopted)(Application for copies should be addressed to the
14、 Society of Automotive Engineers, Inc.400 Commonwealth Drive, Warrendale, PA 15096.)2.4 Order of precedence . In the event of a conflict between the text of this document andthe references cited herein, the text of this document takes precedence. Nothing in this document,however, supersedes applicab
15、le laws and regulations unless a specific exemption has beenobtained.3. REQUIREMENTS3.1. First article . When specified (see 6.2), a sample shall be subjected to first articleinspection in accordance with 4.3.3.2 Materials . Component materials used in the manufacture of this lubricant shall consist
16、 oflubricating solids in a binder, at spraying consistency. Lubricant compositions furnished underthis specification shall contain no organic solvents or binders so as to be compatible with liquidoxygen and radiation.3.3 Physical and chemical properties .3.3.1 Film appearance . Film appearance shall
17、 be uniform in color, smoothness, andthickness; free of cracks, scratches, pinholes, blisters, bubbles, runs, sags, foreign matter, grit,rough particles, separation of ingredients, or any other surface imperfections (see 4.5.2).3.3.2 Film thickness . The film thickness shall be not greater than 0.02
18、5 mm nor less than0.035 mm (see 4.5.3).3.3.3 Film adhesion . The lubricant shall not expose any bare metal surface when tested(see 4.5.4).3.3.4 Thermal stability . The lubricant shall not flake, crack, or soften when tested(see 4.5.5).3.3.5 Endurance life . The lubricant endurance life shall be 60 m
19、inutes when subjected to a454-kg applied load (see 4.5.6).Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-81329D43.3.6 Storage stability . The lubricant shall show no evidence of gelling and shall conform tothe film adhesion requirements of 3
20、.3.3 after 12 months (see 4.5.7).4. VERIFICATION4.1 Classification of inspections . The inspection requirements specified herein are classifiedas follows:a. First article inspection (see 4.3).b. Conformance inspection (see 4.4).4.2 Inspection conditions . Unless otherwise specified, all inspections
21、shall be performed at atemperature of 25 3 C.4.3 First article inspection . First article inspection shall consist of the tests listed in table I.TABLE I. Inspections .TEST PARAGRAPH FIRSTARTICLECONFORMANCEFilm appearanceFilm thicknessFilm adhesionThermal stabilityEndurance lifeStorage stability4.5.
22、24.5.34.5.44.5.54.5.64.5.7XXXXXXXXX-X-4.3.1 First article samples . The first article samples shall consist of three liters selected atrandom from the first lot of lubricant processed under a contract or order.4.4. Conformance inspection . The conformance inspection shall consist of testing thesampl
23、es of 4.4.1 in accordance with table I.4.4.1 Conformance samples . The conformance samples shall consist of one can of lubricanttaken at random from each lot of packaged lubricant, or ; if obtained from a bulk tank, inaccordance with ASTM-D4057 or ASTM-D4177. The lot shall be unacceptable if the sam
24、plesfail to comply with any of the tests specified in table I.4.5 Tests .4.5.1 Preparation of test panels . Samples of the lubricant in sprayable form shall be used toprepare bonded film lubricant specimens on test panels in accordance with the followingapplication procedure for the film appearance,
25、 film thickness, and film adhesion tests:Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-81329D5a. The panels shall be made from:(1 ) Aluminum alloy in accordance with QQ-A-250/5 and anodized in accordance withMIL-A-8625, type I, measuring 0.
26、4 x 76.2 x 152.4 mm.(2 ) Corrosion resistant steel in accordance with SAE-AMS5510, measuring0.9 x 76.2 x 152.4 mm.b. The panels shall be pre-cleaned using aliphatic naphtha in accordance with TT-N-95. Thestainless steel panels shall be sandblasted with 120 grit steel. The surface of the panel shall
27、beheld at a distance of 63.5 mm from the discharge nozzle (orifice opening of 6.35 mm diameter)delivering grit at an air pressure of 550 to 620 kPa. After the panels have been sandblasted, thepanels shall be cleaned with a aliphatic naphtha trichloroethane rinse and dried with a stream ofdry air tha
28、t is free of oil. A spray application shall be used to coat the panels with the lubricant forthe tests of this specification (see 6.3). Two or three coats may be required to reach the desireddry film thickness of 0.025 to 0.035 mm (see 6.4). Air drying, at a temperature of 25 + 3 C forten minutes, s
29、hall be allowed between coats. After the final coat has been applied, the coatedpanels shall be allowed to air dry for 30 to 35 minutes. The coated panels shall then be heated to80 + 1 C for 120 to 125 minutes followed by 120 to 125 minutes at 150 + 3 C. The coatedpanels shall be allowed to cool to
30、room temperature. At least two coated panels shall be used ineach test method requiring test panel specimens.4.5.2 Film appearance test . The bonded solid film lubricant specimens shall be examinedvisually at a magnification of 12X for surface imperfections (see 3.3.1).4.5.3 Film thickness test . Fi
31、lm thickness shall be determined by a magnagauge or by thedifference in thickness as measured between an unlubricated anodized aluminum panel and thesame panel coated with the dry film lubricant. To ensure measurements in the same portion of thepanel, a template shall be made the same size as the pa
32、nel with a total of four 9 .5 mm holes,centered 38 mm in from each 76.2 mm edge and 15.9 mm in from each 152.4 mm edge. Using aprecision micrometer with a 0 .0025 mm graduation, the thickness shall be measured at eachopening in the template with the template in position on the uncoated panel. After
33、the dry filmhas been applied to the panel and cured, the thickness shall be re-measured at the same positions.The difference in the readings represents the film thickness of the lubricant. The film thicknessshall be not greater than 0.025 mm nor less than 0.035 mm.4.5.4 Film adhesion test . Four bon
34、ded anodized aluminum panels (see 4.5.1) shall be testedin accordance with ASTM-D2510. A uniform powdery deposit clinging to the tape shall not beobjectionable.4.5.5 Thermal stability test . The thermal stability test shall be run over a temperature rangeof -185 to 400 C in accordance with ASTM-D251
35、1.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-81329D64.5.6 Endurance life test . The lubricant shall be subjected to an endurance test inaccordance with ASTM-D2625. The cure schedule shall be as follows:a. Air dry for 30 minutes at room t
36、emperature (25 3 C),b. Heat for two hours at 80 1 C, andc. Heat for two hours at 150 3 C.The test pin shall be uncoated and fabricated from a molybdenum alloy (0.5Ti 0.08Zr) having aRockwell hardness B95 to B99 and a surface finish of 8 to 12 root-mean-square ( rms). TheV-blocks may be phosphated or
37、 grit blasted with 120 grit steel to produce a surface roughness of50 to 60 rms.4.5.7 Storage stability test . A full one-liter container shall be stored for 12 months at25 3 C. At the conclusion of the storage period, the container of lubricant shall be subjected tomechanical agitation using an app
38、aratus similar to MIL-M-3070, Type II, size as required, for fiveminutes. The lubricant shall then be applied (see 4.5.2) and tested for film adhesion, thermalstability, and endurance life.5. PACKAGING5.1 Packaging . For acquisition purposes, the packaging requirements shall be as specified inthe co
39、ntract or order (see 6.2). When actual packaging of materiel is to be performed by DoDpersonnel, these personnel need to contact the responsible packaging activity to ascertain requisitepackaging requirements. Packaging requirements are maintained by the Inventory Control Pointspackaging activity wi
40、thin the Military Department or Defense Agency, or within the MilitaryDepartments System Command. Packaging data retrieval is available from the managing MilitaryDepartments or Defense Agencys automated packaging files, CD-ROM products, or bycontacting the responsible packaging activity.6. NOTES(Thi
41、s section contains information of a general or explanatory nature which may be helpful,but is not mandatory.)6.1 Intended use . The lubricant covered by this specification is intended primarily for use inliquid oxygen systems, space vehicles, bearing assemblies, and other equipment where theenvironm
42、ents of extreme temperature and nuclear radiation preclude the use of commerciallubricants and organic solid film lubricant. It is intended to reduce wear and to prevent gallingand seizing of metal surfaces. Do not use the lubricant on materials that may be adverselyaffected by exposure to the speci
43、fic cure temperature of 150 C. The lubricant should not be usedwith oils or greases, unless field use indicates otherwise.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-81329D76.2 Acquisition requirements . Acquisition documents must specify
44、 the following:a. Title, number, and date of the sp ecification.b. Issue of DoDISS to be cited in the solicitation, and if required, the specific issue ofindividual documents referenced (see 2.2.1 and 2.3).c. Whether first article is required (see 3.1).d. Packaging requirements (see 5.1).6.3 Composi
45、tion and application . The composition and application of the lubricant underthis specification should be optional with the manufacturer, but should be restricted by therequirements of this specification.6.4 Film thickness by spray application . Spray application (two coats) produces a filmthickness
46、 in the range of 0.025 to 0.035 mm. This thickness may be reduced by burnishing thecured film. A burnishing technique is as follows:a. Vapor degrease grade 0 steel wool.b. Don clean, wh ite, lint-free cotton gloves, and rub the solid film lubricant surface gentlyand uniformly with the steel wool. A
47、micrometer or other measuring technique should be used todetermine film thickness.c. Remove loose film particles and steel wool with a jet of air which is oil and water-free.d. Continue the burnishing technique until the desired film thickness is achieved.6.5 International standardization agreement
48、. Certain provisions of this specification( see 1.1) are the subject of international standardization agreement AIR-STD-15/1, andSTANAG-1135. When amendment, revision, or cancellation of this specification is proposedwhich will modify the international agreement concerned, the preparing activity wil
49、l takeappropriate action through international standardization channels, including departmentalstandardization offices to change the agreement or make other appropriate accommodations.6.6 Subject term (keyword) list .Liquid oxygen systemsNuclear radiationSpace vehicles6.7 Changes from previous issue . Marginal notations are not used in this revision to identifychanges with respect to the previous issue due to the extent of the changes.Provide
