1、. INCH-POUND A-A-5 9290 21 July 1998 SUPERSEDING 22 April 1964 MIL-H-5559A COMMERCIAL ITEM DESCRZPTION HYDRAULIC FLUID, ARRESTING GEAR The General Services Administration has authorized the use of this commercial item description for ali federal agencies. 1. SCOPE. This commercial item description (
2、CID) covers a commercially available ethylene glycol that has been modified with corrosion inhibitors. The modified glycol is generally used in aircraft arresting gear systems as a hydraulic fluid and is not interchangeable with any other type or grade of hydraulic fluid. 2. SALIENT CHARACTERISTICS.
3、 2.1 Composition. The hydraulic fluid shall be a mixture of ethylene glycol, water, triethanolamine phosphate, and sodium mercaptobenzothiazole (NaMBT) as specified in table I. The sodium mercaptobenzothiazole shall conform to the requirements in table II. 2.2 Chemical and Physical Properties. The h
4、ydraulic fluid shall conform to the requirements in table III. 3. QUALITY ASSURANCE PROVISIONS. 3.1 Product Conformance. The product provided shall meet the salient characteristics of this CID, conform to the producers own drawings, specifications, standards, and quality assurance practices, and be
5、the same product offered for sale in the commercial market. The Government reserves the right to require proof of such conformance. Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any other data which may improve this document should be sent to: Commander, Naval
6、Air Warfare Center Aircraft Division, Code 414100B120-3, Highway 547, Lakehurst, NJ 08733-5100. FSC 9150 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- A-A-59290 m 9018054 0003199 bbT m Component A-A-5 9290 TABLE I. Composition. Percent by Weight M
7、inimum Maximum Ethylene glycol Water 11 93.95 - 2.50 3.00 Triethanolamine phosphate 21 NaMBT 31 TABLE II. Chemical and uhvsical properties of NaMBT inhibitor. 2.25 2.75 0.20 0.30 Color Specific gravity at 25“C/25“C (77“F/77“F) Suspended matter Solubility at.25“ h5“C (77“ h8“F) in: Water after 24 hou
8、rs 11 Ethylene glycol after 24 hours 21 Water and ethylene glycol after 16 hours 31 Free alkalinity at 25“ I3“C (77“ *5“F), grams of NaOH per 100 mL of sample 41 Not darker than 15 ASTM-D 1544 1.27 k0.03 ASTM-D 1 122 None VlSUal VlSUal Soluble; slight haze, maximum Soluble; no haze or cloudiness Sol
9、uble; slight opalescence, maximum 0.05 to 0.75 ASTM-D 1 12 1 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. Property Phosphate content (calculated as phosphoric acid), percent, minimum pH value of a 50 percent aqueous solution (by volume) at 25“
10、 *3“C (77“ *5“F) A-A-59290 90LB05Y 0003200 LO1 Requirement 0.56 7.2 to 7.8 A-A-5 9290 TABLE III. Chemical and physical properties of hydraulic fluid. Boiling point, minimum Ash content, percent by weight, maximum Specific gravity of undiluted material at 1 5.5“C/ 1 5.5 “C ( 6O0F/60“F) Viscositv at 3
11、7.7“C (1 00F). centistokes. minimum 165C (329F) 0.52 1.111 to 1.123 9.0 Test Method or Paragraph 3.3.1 ASTM-D 1287 ASTM-D 1 120 ASTM-D1119 ASTM-D 1 122 ASTM-D445 3.2 Market Acceptability. The following market acceptability criteria are necessary to document the quality of the product to be provided
12、under this CID. 3.2.1 The company producing the hydraulic fluid must have been producing a product meeting the requirements of this CID for at least 6 months. 3.3 Test Procedures. 3.3.1 Phosphate Content. Dilute 20 gams (g) of hydraulic fluid with 1 O0 milliliters (mL) of distilled water. Add 10 mL
13、of a 50 percent aqueous solution of hydrochloric acid and 30 mL of magnesia mixture (see 3.3.2). Add concentrated aqueous ammonia until the solution is neutral to methyl red indicator. Stir for 5 minutes and, while continuing to stir, add an additional 15 mI, of aqueous ammonia. Allow the solution t
14、o stand for not less than 4 hours. Filter the solution and ignite the precipitate in a weighed platinum crucible at a temperature of 1 O00 to 1050C (1832 to 1922F) to constant weight. Calculate the phosphate content (as H3PO4) from the weight of the magnesium pyro-phosphate (MP207). 3.3.2 Magnesia M
15、ixture. Dissolve 50 g of crystalline magnesium chloride (MgC126H20) and 100 g of ammonium chloride in 500 mL. of water. Add 10 mL of concentrated aqueous ammonia and allow the solution to stand ovemight. Filter the solution if a precipitate is evident. Add hydrochloric acid to make the solution slig
16、htly acidic and dilute to 1 liter. 4. PACKAGING. 4.1 Preservation. Packing. and Marking. Preservation, packing, and marking shall be as specified in the contract or order and 4.1.1. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-5 9290 m 90380
17、54 0003203 048 m A-A-5 9290 4.1.1 Marking;. 4.1.1.1 Warning Markinq. The following warning marking shall appear on each container: WARNING: This product, while undiluted, will freeze at about 0F. For use at lower temperatures, water must be added as required to obtain lower freezing point. 4.1.1.2 I
18、nstruction Marking. The following instruction marking shaii appear on each container: INSTRUCTIONS: Obliterate ail markings when empty. This fluid is not interchangeable with any other type or grade of hydraulic fluid. 5. NOTES. 5.1 National Stock Numbers. 9 1 50-00-224-8729 9150-00-243-1987 5.2 Sou
19、rce of Documents. 5.2.1 ASTM Standards are available from the American Society for Testing and Materiais, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959. 5.3 Ordering Information. The purchaser should select the preferred options permitted herein and include the foliowing information in pro
20、curement documents: a. Title, number, and date of this CID. b. Quantity. c. Preservation, packing, and marking. MILITARY INTERESTS: custodians: Navy - AS Air Force - 11 Army-AR CIVIL AGENCY COORDINATING ACTIVITY: GSA/FSS - IOFTE Preparing Activity: Navy - AS (Project 9 150- 122 i) Review Activities: ArmY-MI DLA - GS 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
