1、 METRIC MIL-PRF-87257B 22 April 2004 SUPERSEDING MIL-PRF-87257A 8 December 1997 PERFORMANCE SPECIFICATION HYDRAULIC FLUID, FIRE RESISTANT; LOW TEMPERATURE, SYNTHETIC HYDROCARBON BASE, AIRCRAFT AND MISSILE This specification is approved for use by all Departments and Agencies of the Department of Def
2、ense. 1. SCOPE 1.1 Scope This specification describes the characteristics and provides the requirements for a synthetic hydrocarbon base hydraulic fluid for use in the -54C to +200C temperature range in aircraft and missile hydraulic systems. This hydraulic fluid is identified by NATO Code No. H-538
3、 (see 6.5). 2. APPLICABLE DOCUMENTS 2.1 General The documents listed in this section are specified in sections 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 ef
4、fort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements documents cited in sections 3 and 4 of this specification, whether or not they are listed. AMSC N/A FSC 9150 Comments, suggestions, or questions on this document sh
5、ould be addressed to ASC/ENOS, 2530 Loop Road West, Wright-Patterson AFB OH 45433-7101 or e-mailed to Engineering.Standardswpafb.af.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at www.dodssp.daps.mil. DIST
6、RIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-87257B 2.2 Government documents 2.2.1 Specifications and standards The following specifications and standards form a
7、 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. SPECIFICATIONS FEDERAL TT-T-656* - Tricresyl Phosphate MILITARY MIL-PRF-680 - Degreasing Solvent MIL-PRF-5606* - Hydraulic Fluid, Petroleu
8、m Base; Aircraft, Missile, and Ordnance, NATO Code Number H-515 MIL-PRF-6083 - Hydraulic Fluid, Petroleum Base, for Preservation and Operation, NATO Code Number C-635 MIL-PRF-46170 - Hydraulic Fluid, Rust Inhibited, Fire Resistant Synthetic Hydrocarbon Base, NATO Code Number H-544 MIL-PRF-83282 - Hy
9、draulic Fluid, Fire Resistant, Synthetic Hydrocarbon Base, Aircraft, Metric, NATO Code Number H-537 * Indicates document is inactive for new design STANDARDS FEDERAL FED-STD-791 - Lubricants, Liquid Fuels, and Related Products; Methods of Testing (Copies of these documents are available online at ht
10、tp:/assist.daps.dla.mil/quicksearch/ or www.dodssp.daps.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.2.2 Other Government publications The following other Government documents, drawings, and publications form a part of this doc
11、ument to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. PUBLICATIONS U.S. ENVIRONMENTAL PROTECTION AGENCY Public Law 94-580 - Resource Conservation and Recovery Act of 1976 (Application for copies may be ordered
12、 online at http:/bookstore.gpo.gov/ or addressed to the Superintendent of Documents, U.S. Government Printing Office, Washington DC 20402.) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-87257B (Copies of specifications, standards, handboo
13、ks, drawings, and publications required by manufacturers in connection with specific acquisition functions should be obtained from the acquisition activity or as directed by the contracting office.) 2.3 Non-Government publications The following documents form a part of this document to the extent sp
14、ecified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM D 92 - Flash and Fire Points by Cleveland Open Cup (DoD adopted) ASTM D 97 - Pour Point of Petroleum Products (DoD adopted
15、) ASTM D 130 - Detection of Copper Corrosion from Petroleum Products by the Copper Strip Tarnish Test (DoD adopted) ASTM D 287 - API Gravity of Crude Petroleum and Petroleum Products (Hydrometer Method) (DoD adopted) ASTM F 312 Microscopical Sizing and Counting Particles from Aerospace Fluids on Mem
16、brane Filters ASTM D 445 - Kinematic Viscosity of Transparent and Opaque Liquids (the Calculation of Dynamic Viscosity), (DoD adopted) ASTM D 664 - Acid Number of Petroleum Products by Potentiometric Titration (DoD adopted) ASTM D 892 - Foaming Characteristics of Lubricating Oils (DoD adopted) ASTM
17、D 972 - Evaporation Loss of Lubricating Greases and Oils (DoD adopted) ASTM D 1500 - ASTM Color of Petroleum Products (ASTM Color Scale) (DoD adopted) ASTM D 4057 - Manual Sampling of Petroleum and Petroleum Products (DoD adopted) ASTM D 4172 - Wear Preventive Characteristics of Lubricating Fluid (F
18、our-Ball Method) (DoD adopted) ASTM D 4177 - Automatic Sampling of Petroleum and Petroleum Products (DoD adopted) ASTM D 4636 - Corrosiveness and Oxidation Stability of Hydraulic Oils, Aircraft Turbine Engine Lubricants, and Other Highly Refined Oils (DoD adopted) ASTM D 4898 - Insoluble Contaminati
19、on of Hydraulic Fluids by Gravimetric Analysis (DoD adopted) ASTM D 5185 - Determination of Additive Elements, Wear Metals, and Contaminants in Used Lubrication Oils and Determination of Selected Elements in Base Oils by Inductively Coupled Plasma Atomic Spectroscopy (ICP-AES) (DoD adopted) ASTM D 5
20、306 - Linear Flame Propagation Rate of Lubricating Oils and Hydraulic Fluids ASTM D 5864 - Determination of Aerobic Aquatic Biodegradation of Lubricants or Their Components 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-87257B ASTM D 5949
21、- Pour Point of Petroleum Products (Automatic Pressure Pulsing Method) ASTM D 6304 - Determination of Water in Petroleum Products, Lubricating Oils, and Additives by Coulometric Karl Fisher Titration ASTM D 6793 - Determination of Isothermal Secant and Tangent Bulk Modulus (Application for copies sh
22、ould be addressed to ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, Pennsylvania, USA 19428-2959. Order online at www.astm.org.) SOCIETY OF AUTOMOTIVE ENGINEERS (SAE) SAE AMS 3217/2 - Test Slabs, Acrylonitrile Butadiene (NBR-L) Low Acrylonitrile, 65-75 (DoD adopted) (Appl
23、ications for copies should be addressed to SAE, 400 Commonwealth Dr., Warrendale PA 15096-0001. Order online at http:/www.sae.org/technicalcommittees/index.htm.) (Non-Government standards and other publications are normally available from the organizations which prepare or which distribute the docum
24、ents. These documents also may be available in or through libraries or other informational services.) 2.4 Order of precedence In the event of a conflict between the text of this specification and the references cited herein, the text of this specification takes precedence. Nothing in this specificat
25、ion supersedes applicable laws and regulations unless a specific exemption has been obtained. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-87257B 3. REQUIREMENTS 3.1 Qualification The hydraulic fluids furnished under this specification s
26、hall be products which are authorized by the qualifying activity for listing on the applicable Qualified Products List (QPL) at the time of award of contract (see 4.2 and 6.3). Changes shall not be permitted in the formulation of an approved product unless specific, written approval of the qualifyin
27、g activity is obtained. 3.2 Materials The materials used in formulating this hydraulic fluid shall consist of synthetic hydrocarbon base and shall contain additives as specified in 3.2.1. A base oil mixture of 2 cSt and 4 cSt polyalphaolefin is suggested but is not mandatory. The hydraulic fluid sha
28、ll contain no admixture of resins, soaps, gums, fatty oils, or oxidized hydrocarbons. 3.2.1 Additives There shall be no restriction on the types of materials used as additives in the fluid except for those listed and those imposed by technical requirements of this specification. No pour point depres
29、sant materials or viscosity index improvers may be used. 3.2.1.1 Oxidation inhibitors Oxidation inhibitors of the phenolic type shall not exceed a concentration of 2.0 percent by weight. 3.2.1.2 Anti-wear agent Anti-wear agents, such as tricresyl phosphate (TCP) conforming to TT-T-656, shall be blen
30、ded in sufficient quantity, not to exceed 3.0 weight percent, to permit the finished oil to meet four-ball requirements specified in table I. If TCP is used, the finished fluid shall contain less than 0.03 weight percent of the ortho-isomer. 3.2.1.3 Blending fluid Blending fluids, such as diesters,
31、shall be blended in a concentration not to exceed 35 percent by weight of the finished fluid but in sufficient quantity to meet the rubber swell, as specified in table I, and viscosity requirement at -54C as specified in table I. 3.2.1.4 Color The fluid shall contain red dye in concentration not gre
32、ater than 1 part of dye per 10,000 parts of oil by weight. 3.3 Finished fluid The properties of the finished fluid shall be as specified in table I, table II, and 4.4.2. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-87257B TABLE I. Proper
33、ties and test methods. Test Method Property Test Limits FED-STD- 791 ASTM Acid number, mg KOH/g 0.20 max D 664 Aerobic aquatic biodegradation Class I min D 5864 API gravity 15.6C/15.6C (1)(2)D 287 Barium content, parts per million 10 max D 5185 Color (3)(4) D 1500 Compatibility (5)(6) Corrosiveness
34、and oxidation stability (168 hours 135 1C) Change in acid number, mg KOH/g Percent change in viscosity 40C Metal specimen weight change, mg/cm (7)M-50 steel Aluminum Magnesium Cadmium plated steel (8)Copper (9)Separation of insoluble materials or gumming of the fluid 0.20 max 10 max 0.2 max 0.2 max
35、0.2 max 0.2 max 0.6 max None D 4636 Evaporation loss (6.5 hours 135C), weight percent 20 max D 972 Flammability High temperature-high pressure spray ignition Flame propagation cm/sec Flash point, C Fire point, C (10) 0.5 max 160 min 170 min 6052 D 5306 D 92 D 92 Foaming characteristics 24C Foaming t
36、endency, ml (volume at end of five-minute blowing period) Foam stability, ml (volume at end of ten-minute settling period) 65 max Complete collapse (11)D 892 Four-ball, use test condition A, scar diameter, mm 1 kg load 10 kg load 40 kg load 0.21 max 0.30 max 0.65 max D 4172 6 Provided by IHSNot for
37、ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-87257B Test Method Property Test Limits FED-STD- 791 ASTM High temperature stability (12)Percent change in viscosity 40C Change in acid number, mg KOH/g Formation of precipitate or insoluble material 5 max 0.1 max Non
38、e Isothermal secant bulk modulus 40oC and 27.6 MPa (4000 psig), MPa (psi) 1379 min (200,000 min) D 6793 Low temperature stability, 72 hours -54C 1C (13) 3458 Particulate contamination(14)Particle count (15)Gravimetric analysis, mg/100 ml See table II 1.0 max 3012(16)D 4898 Pour point, C -60 max D 97
39、 or D 5949 Rubber swell, standard synthetic rubber, NBR-L, percent (17)19.0 to 30.0 3603 Storage stability (after 12 months) (18) 3465 Viscosity stability -54C, mm/sec 3 hours 72 hours 2500 max 2500 max D 2532 Viscosity, mm/sec 40C 100C -40C 6.7 min 2.0 min 550 max D 445 Water, parts per million 100
40、 max D 6304 Workmanship (19) NOTES: (1) Qualification inspection: Shall be determined, but shall not be limiting. (2) Conformance inspection: Shall be 0.008 the value determined during qualification inspection. (3) See 4.4.6. (4) There shall be no readily discernible difference between the color of
41、the finished fluid and the standard color. (5) See 4.4.3. (6) Compatible in all concentrations with each of the fluids approved under this specification. Shall be miscible with MIL-PRF-5606, MIL-PRF-6083, MIL-PRF-46170, and MIL-PRF-83282 fluids in all proportions from 54C to 200C. No formation of re
42、sinous gums, sludge, or insoluble material shall occur. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-87257B (7) There shall be no pitting, etching, or visible corrosion on the surface of the metals when viewed under magnification of 20 d
43、iameters. (8) A slight discoloration shall be permitted. (9) Any corrosion (discoloration) produced on the surface shall be not greater than a No. 3 of the ASTM D 130 copper corrosion standard. (10) The flame shall not continue to burn when the source of ignition is removed. (11) A ring of small bub
44、bles around the edge of the graduate shall be considered complete collapse. (12) See 4.4.4. (13) No evidence of gelling, clouding, crystallization, solidification, or separation of ingredients. (14) The container shall be thoroughly shaken immediately prior to withdrawing the sample. Two determinati
45、ons per sample are required. Each determination shall be made on 100-ml portions of the sample. (15) Particle count may also be measured by the use of the optical procedure detailed in method ASTM F 312 in lieu of a HIAC counter (Model HIAC Royco 8000A) or equivalent. See 4.4.5. (16) Hexane shall be
46、 used instead of ozone depleting solvents. (17) Use standard synthetic rubber NBR-L (as referenced in AMS 3217/2) within 12 months of date of manufacture. Store under 60F. See 6.4. (18) The fully blended product shall be clear and transparent, with no separation of ingredients or evidence of crystal
47、lization, and shall conform to all requirements of this specification. (19) Homogeneous and free from suspended matter, grit, or other adulteration. TABLE II. Particle count. Particle size range (largest dimension), micrometers Allowable number (max) each determination, automatic count 5-15 15-25 25
48、-50 50-100 Over 100 10,000 1,000 150 20 5 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-87257B 4. VERIFICATION 4.1 Classification of inspection a. Qualification inspection (see 4.2). b. Conformance inspection (see 4.3). 4.2 Qualification
49、inspection 4.2.1 Qualification inspection sample Qualification samples shall consist of a 1-gallon container of hydraulic fluid. The following may also be requested at the option of the qualifying agent: 1 quart of the base stock before addition of additive agents, 1 ounce red dye, 1 quart of blending fluid, 4 ounces anti-wear agent, 1 ounc
