1、 METRIC MIL-PRF-81322G 24 January 2005 SUPERSEDING MIL-PRF-81322F 21 July 1998 PERFORMANCE SPECIFICATION GREASE, AIRCRAFT, GENERAL PURPOSE, WIDE TEMPERATURE RANGE, NATO CODE G-395 This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope.
2、 This specification covers one grade of general purpose, aircraft grease, NATO Code G-395, formulated to withstand operations at high speeds and a wide temperature range of -54 to 177 C (-65 to 350 F). 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in section
3、s 3 and 4 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet
4、all specified requirements of documents cited in sections 3 and 4 of this specification, whether or not they are listed. Comments, suggestions, or questions on this document should be addressed to: Commander, Naval Air Warfare Center Aircraft Division, Code 491000B120-3, Highway 547, Lakehurst, NJ 0
5、8733-5100 or emailed to thomas.omaranavy.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at http:/assist.daps.dla.mil. AMSC N/A FSC 9150 Provided by IHSNot for ResaleNo reproduction or networking permitted wi
6、thout license from IHS-,-,-MIL-PRF-81322G 2.2 Government documents. 2.2.1 Specifications and standards. The following specification forms a part of this document to the extent specified herein. Unless otherwise specified, the issue of this document is that cited in the solicitation or contract. FEDE
7、RAL SPECIFICATIONS FED-STD-791 - Lubricants, Liquid Fuels, and Related Products; Methods of Testing (Copies of this document are available on line at http:/assist.daps.dla.mil/quicksearch/ or http:/assist.daps.dla.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D,
8、Philadelphia, PA 19111-5094.) 2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. AMERICAN SOCIETY FOR TESTING AND MATERIALS (A
9、STM) INTERNATIONAL ASTM-B150M - Aluminum Bronze Rod, Bar, and Shapes Metric, Standard Specification for. (DoD adopted) ASTM-D130 - Detection of Copper Corrosion from Petroleum Products by the Copper Strip Tarnish Test, Standard Test Method for. (DoD adopted) ASTM-D217 - Cone Penetration of Lubricati
10、ng Grease, Standard Test Methods for. (DoD adopted) ASTM-D942 - Oxidation Stability of Lubricating Greases by the Oxygen Bomb Method, Standard Test Method for. (DoD adopted) ASTM-D1264 - Determining the Water Washout Characteristics of Lubricating Greases, Standard Test Method for. (DoD adopted) AST
11、M-D1478 - Low-Temperature Torque of Ball Bearing Grease, Standard Test Method for. (DoD adopted) ASTM-D1743 - Determining Corrosion Preventive Properties of Lubricating Greases, Standard Test Method for. (DoD adopted) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without lic
12、ense from IHS-,-,-MIL-PRF-81322G ASTM-D2265 - Dropping Point of Lubricating Grease Over Wide Temperature Range, Standard Test Method for. (DoD adopted) ASTM-D2266 - Wear Preventive Characteristics of Lubricating Grease (Four-Ball Method), Standard Test Method for. (DoD adopted) ASTM-D2595 - Evaporat
13、ion Loss of Lubricating Greases Over Wide Temperature Range, Standard Test Method for. (DoD adopted) ASTM-D2596 - Measurement of Extreme Pressure Properties of Lubricating Grease (Four-Ball Method), Standard Test Method for. (DoD adopted) ASTM-D3336 - Life of Lubricating Greases in Ball Bearings at
14、Elevated Temperatures, Standard Test Method for. (DoD adopted) ASTM-D3704 - Wear Preventive Properties of Lubricating Greases Using the (Falex) Block On Ring Test Machine in Oscillating Motion, Standard Test Method for. (DoD adopted) ASTM-D4048 - Detection of Copper Corrosion from Lubricating Grease
15、, Standard Test Method for (DoD adopted) ASTM-D4057 - Manual Sampling of Petroleum and Petroleum Products, Standard Practice for. (DoD adopted) ASTM-D4289 - Elastomer Compatibility of Lubricating Greases and Fluids, , Standard Test Method for. (DoD adopted) (Copies of these documents are available f
16、rom www.astm.org or ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) 2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supe
17、rsedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Qualification. The grease furnished under this specification shall be a product that is authorized by the qualifying activity for listing on the applicable qualified products list before contrac
18、t award (see 4.3 and 6.3). 3.2 Materials. The grease shall consist of a liquid lubricant and a jelling agent that when formulated results in a compound meeting the wide temperature range of this specification. There shall be no change in the formulation of a qualified product (see 6.3) 3 Provided by
19、 IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-81322G 3.3 Physical properties. Physical properties of the grease shall conform to table I when tested in accordance with table II. TABLE I. Physical properties. Property Requirement Corrosiveness (copper
20、strip) 1-b, max. The grease shall show no green color in that portion contacting the copper strip. Any corrosion produced on the surface of the copper shall be no more than 1-b when compared with ASTM-D130 (see 6.8) Dirt 25 to74 m 75 m or larger 1000 particles per milliliter of grease, max. None Dro
21、pping point 232 C, min. Evaporation, after 22 hours at 177 3 C 10.0 percent weight loss, max. High temperature performance, at 177 3 C 400 hours, min. (average of four test runs) Load carrying capacity (Load wear index) 30.0 min. Low temperature torque, at -54 C Starting Running, after 60 minutes 0.
22、98 Newton-meter (Nm), max. 0.098 Nm, max. Odor No odor of rancidity, perfume, or free alcohol Oil separation, after 30 hours at 177 3 C 2.0 - 8.0 percent weight loss Oscillation Friction and wear after 35,000 cycles 6.35 mm width of wear scar, max. Oxidation stability, at 99 C In 100 hours In 500 ho
23、urs 83 kilopascals (kP) pressure drop, max. 172 kP pressure drop, max. Rust preventive properties, ASTM-D1743 rating Pass Based on the pass or fail rating of at least two of three bearings. Steel on steel wear 0.8 millimeter (mm), max. Based on the average wear scar diameter on the three balls. Stor
24、age stability, penetration: Unworked Separation of crystalline material Worked 200, min. None 30, max. Swelling of synthetic rubber, NBR-L (see 6.6), after 168 0.5 hours at 70 1 C 10.0 percent, max. Water washout, at 41 1 C 20 percent loss, max. Worked penetration 265-320 Worked stability, penetrati
25、on, after 100,000 double strokes 350, max. 3.4 Workmanship. The grease, when examined visually, shall be a smooth and homogeneous mixture, free from lumps and extraneous materials. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-81322G 3.5
26、Compatibility. The grease shall be compatible with all previously qualified greases when tested in accordance with 4.5.3. Immediately after mixing, and after undisturbed storage for seven days, the mixture shall not form resinous gums, sludge, or insoluble solid materials and shall comply with the w
27、orked penetration and worked stability requirements (see table I). In the event of failure, the previously qualified grease (unmixed with other greases) shall be tested to verify that it meets the worked penetration and worked stability requirements under the conditions specified in 4.5.3. If the pr
28、eviously qualified sample fails to meet the worked penetration or worked stability requirement, a fresh sample shall be obtained and the compatibility test repeated. Additional mix ratios of 90 percent previously qualified and 10 percent new and vice versa may be used during qualification testing (s
29、ee 4.3.1). 3.6 Toxicity. The grease furnished under this specification shall have no adverse effect on the health of personnel when used for its intended purpose. The grease shall not cause any environmental problems during waste disposal (see 4.5.5). 4. VERIFICATION 4.1 Classification of inspection
30、s. The inspection requirements specified herein are classified as follows: a. Qualification inspection (see 4.3). b. Conformance inspection (see 4.4). 4.2 Inspection conditions. Unless otherwise specified, all inspections shall be performed in accordance with the conditions specified in tables I and
31、 II on unworked grease. The physical values specified in table I apply to the average of determinations made on the sample. 4.3 Qualification inspection. Qualification inspection shall consist of all the tests specified in table II. 4.3.1 Sampling. Qualification test samples shall consist of a minim
32、um of 6.81 kg (15.0 lb.) of grease. 4.4 Conformance inspection. The conformance inspection shall consist of the following tests specified in table II: worked penetration, worked stability, steel on steel wear, oil separation, odor, low temperature torque, load carrying capacity, evaporation, droppin
33、g point, dirt, corrosiveness (copper strip), and workmanship. The inspection shall be conducted on samples taken in accordance with 4.4.1. 4.4.1 Sampling for tests. Select two 2.95 kg (6.5 lb.) containers of grease, taken at random from each filled lot (see 6.4). For users who obtain grease in large
34、 containers, samples shall be selected in accordance with ASTM-D4057. One sample shall be used for tests and the other shall be retained. If any test result does not comply with the stated requirement, the test in question shall be repeated on the retained sample: if the sample fails again, the lot
35、shall be rejected. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-81322G 4.5 Test methods. The properties of the grease shall be tested in accordance with the test methods and paragraphs specified in table II. TABLE II. Examinations and te
36、st methods. PROPERTIES TEST METHOD OR PARAGRAPH Corrosiveness (copper strip) ASTM-D4048 Dirt FED-STD-791, method 3005 Dropping point ASTM-D2265 Evaporation ASTM-D2595 High temperature performance ASTM-D3336Load carrying capacity ASTM-D2596 Low temperature torque 1/ ASTM-D1478Oil separation FED-STD-7
37、91, method 321 Oscillation Friction and wear 4.5.1 Oxidation stability ASTM-D942 Rust preventive properties ASTM-D1743 Steel on steel wear ASTM-D2266 Storage stability 4.5.2 Swelling of synthetic rubber, NBR-L ASTM-D4289 Water washout ASTM-D1264 Worked penetration ASTM-D217 Worked stability FED-STD-
38、791, method 313 Workmanship Visual Compatibility 4.5.3Odor 4.5.41/ Observation for skidding or ball sliding shall be made during test run. 4.5.1 Oscillation - friction and wear. Oscillation - friction and wear shall be determined in accordance with ASTM-D3704 and the following: Time: 35,000 cycles A
39、ngle of oscillation: 90 Test ring: Type S-10 The test block shall be an ASTM-B150M, alloy C64200 having a Rockwell B hardness of HRB 88 3 with dimensions and surface finish the same as those specified for H-30 or H-60 blocks. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted wit
40、hout license from IHS-,-,-MIL-PRF-81322G 4.5.2 Storage stability. The storage stability shall be in accordance with FED-STD-791, Method 3467, and the following: Temperature of 38 3 C (100 5 F) to be maintained for 6 months. After determination of unworked penetration, the unworked penetration sample
41、 shall be stored at 38 3 C (100 5 F) for an additional 6 months. The sample shall be covered in such fashion to provide an air space above the grease and to prevent the surface of the grease from being disturbed. The sample shall then be examined for presence of crystalline material. 4.5.3 Compatibi
42、lity. Fill standard grease cups with equal volumes of the grease being tested and previously qualified greases. The cup shall be filled by alternately adding 60 grams of each of the two greases being tested, until the cup is full (approximately 454 grams). Mix the two greases by working the sample f
43、or 60 double strokes in accordance with the worked penetration procedure of ASTM-D217 and then let the mixture stand undisturbed for seven days at 18.0 to 29.5 C (65 to 85 F) and 50 10 percent relative humidity. Examine the worked penetration and then the worked stability in accordance with table II
44、, using the same sample of grease mixture for both tests. Small amounts of fresh grease may be added to the worker cup just prior to the worked stability test, as needed to maintain a full cup for testing. 4.5.4 Odor. The odor of the grease shall be observed immediately upon opening the test contain
45、er for conformance to table I. 4.5.5 Toxicity. To determine conformance to 3.6, the grease shall be evaluated via a Health Hazard Risk Assessment (HHRA) which will be performed by the Navy Environmental Health Center (NEHC) (see 6.2 and 6.9). 5. PACKAGING 5.1 Packaging. For acquisition purposes, the
46、 packaging requirements shall be as specified in the contract or order (see 6.2). When packaging of materiel is to be performed by DoD or in-house contractor personnel, these personnel need to contact the responsible packaging activity to ascertain packaging requirements. Packaging requirements are
47、maintained by the Inventory Control Points packaging activity within the Military Service or Defense Agency, or within the military services system commands. Packaging data retrieval is available from the managing Military Departments or Defense Agencys automated packaging files, CD-ROM products, or
48、 by contacting the responsible packaging activity. 6. NOTES (This section contains information of a general or explanatory nature which may be helpful, but is not mandatory.) 6.1 Intended use. The grease covered by this specification is military unique because it is intended to lubricate military ai
49、rcraft equipment subject to extreme marine conditions and 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-81322G operate in a wide temperature range. Commercial equipment is not exposed to these extreme conditions. The grease is intended for use in applications where the temperature range is -54 to 177 C (-65 to 350
