1、 JAN-M-454 21 FEBRUARY 1947 , JOINT ARMY-NAVY SPECIFICATION MAGNESIUM-ALUMINUM ALLOY, POWDERED This specification was ap roved by the War Department and the Navy Department for u8e of procurement- services of the Army and the Navy. A. APPLICABLB SPECIFICATIONS AND OTEER PUBLICATIONS A-1, Speoificati
2、ons.-The following specifications, of th? issue in effect on date of *invitation for bids, form a part of this specifi- cation : . U. s. ARMY SPECIFICATIONS 604-1-General Specification for Ammunition except Smsll 100-2-Standard Specification for Marking Shipments by Arms Ammunition. Contractrs. NAVY
3、 DEPARTMENT SPECIFICATION General Specifications for Inspection of Material? RRSk661Sieves; Standard, Testing. TEDERAL SPECIFICATION . - . A-2, Other publcaton+-The following publications, of the issue in effect on date of invitation for bids, form a part of this BUREAU OF SUPPLIES AND ACCOUNTS PUBL
4、ICATION . INTERSTATE COMMERCE COMMISSION REGULATIONS , I i specification. ! . Navy Shipment Marking Handbook.P Regulations for the Transportation of Explosives and -Other . Dangerous Articles, etc. i B.TYPES i B-1. This specification covers the following types of magnesium- (See - aluminum alloy pow
5、der as specified in the contract or order. par. I-2.) The A-60160 . Type B-66/36 C. IKATEIRIAL AND WORKMANSHIP C-1. Primary aluminum shall be used in the manufacture of Primary or secondary aluminum may be type A alloy powder. used in the manufacture of type B. alloy powder. Xl. GENERAL REQUIREMENTS
6、 D-1. See section E. . - CJAN-M-464 1 -, GPO-%Army (OW) 601 o% .- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Magnesium . Aluminum Tota! magnesium and aluminum .I .* 5 2 E. DETAIL REQUIREiifENTS El. Composition,-Magnesium-aluminum alloy powder sh
7、all conform to the compositions shown in table I. TABLE I.-Composition. 1- Type A I TypeB Pcrcetit 60.0 f 2.0 60.0 f 2.0 Pcrcent 66.0 f 2.0 36.0 f 2.0 98.0 2.0 0.76 0.6 0.6 0.1 0.01 0.05 0.1 98.0 2.0 0.76 0.6 O. 6 . 0.1 0.01 0.05 0.1 (min.) i :. . Orieti as AIdh (inax.). . Iron as Fe .(mar.). . Sili
8、con as SI max.) . Other metals (max.) i,. . Zinc ns %n (rnnx.) . Grense and fats (max,). Moisture (mar.) Grit (mar.) I E-2. Granulat.ion.-Magnesiunpaluminum alloy powder shall i- conform to the requirements shown in table II using U. S. Stan- dard sieves conforming to the requirements of Federal Spe
9、cifica- I tion RR-S-366. -. TABLE II.-Granutation. Type A Type B I -Through sieve No. Iiinimum minimum maximum I I SZ 100 120 230 E l I I F. METHDS OF SAMPLING, INSPECTION, AND TESTS I 3-1. Size of lots.-Maximum, 10,000 pounds. F-2a. Primary sample bms.-The inspector shall designate the number of co
10、ntainers, the location of the individual containers, and the method of sampling whieh shall be representative of the lot. In any case, not less than 10 containers shall be selected to repre- sent the lot. The supplier shall be given no prior information to indicate. which particular containers will
11、be selected. A representa- tive primary sample shall be taken from each batch. (See par. Ha.) Blend the contents of each selected container as thorough1 f as practicable and by means of 4 thief, remove portions from eaci ! container. Insert the thief. vertically to remove material from top i to bott
12、om and from at least three positions across the diameter of i the container. Each primary sample shall be mixed thoroughly, f divided into two portions, and transferred to approved sample con- i tainers so.labeled that the shipping containers ?rom which these samples were taken can be identified rea
13、dily. One portion shall 5 F-2. Sampling.- $ . I JAN-M-I641 - I . ,- Y Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-P 1 i f i. I i i I 3 . - f -. /. .- I be taken for laboratory examination and the other portion sha!l be retained for possible check
14、 analysis. Spot check samples shall be taken from time to tiine, from any portion of the lot, by the inspector. F-2b. Co2;cpositc snwiylc basis.-When acceptance on basis of primary sample aiilysis is not feasible or advisable in the opinion of the Chief of the bureau or agency coiicerned, the accept
15、ance tests shall be made on a coinposite sample prepared by blending equal portions takeii from each of the primary samples and reduc- ing the blend to outain a composite sample weighing approximately 1 pound. The remaining portions of the primary samples shall be held by the inspector for possible
16、future examination should the composite sample fail to meet the requirements. F-2c. Markhg of sample coiitainers.-Each sample container shall be labeled to show the name of the material, manufacturer, plan, contract or order number, number of pounds in the lot, lot number and, when applicable, the b
17、atch or container number, F-3. Zmpection!- F-3a. Ari)ig.-Iiispection shall be made in accordance with U. S. Ariiiy Specification 50-0-1 and unless otherwise specified in the contract or order shall be made at the point of delivery. F-3b. Navy.-Inspection shall be made at, the point of delivery unles
18、s otherwise specified in the contract or order. F3c. Lot accc!iJf(L?icc.-.4cceptance of the lot shall be based on the analysis of primary samples and spot check samples, or the composite sample, selected to represent the lot. Primary samples and spot check samples shall be examined and tested as com
19、pletely as necessary to provide reasonable assurance to the inspector that al1 portions of he lot comply with cach oiic of the specification re- quirements. No lot shall be accepted when the analysis of any primary sample or spot check sample or composite sample shows non-compliance with any require
20、ment of this specification. Each batch shall comply with the rcquirenicnts specified in section E. The contractors record of batch analyses shall be available at all times for examination by the inspector. F-4. Tests.-Tests to determine compliance with the require- ments of this specification shall
21、be made iii accordance with the following paragraphs as applicable. For Navy purchases, the testa shall be mads at a Governmciit laboratory unless otherwise specified in the contract or order. F-4a. Moistitre.-Transfer a portion of approximately 6 gm. of the sample to a tared shallow weighing contai
22、ner provided with a cover. Weigh the dish and sample. Remove the cover and place in a sulfuric acid vacuum desiccator for 24 hours. Cover and weigh. Calculate the loss in weight as percent moisture. F-4b. Gwase aiid fats.-Extract a weighed portion of approxi- mately 20 gm. of the sample with ether i
23、n a Soxhlet or similar ex- tractor using a tared flask. When extraction is coihplete, evapo- rate the ether and dry the flask and contents at 90“ C. to constant weight. Cool in a desiccator and weigh. Calculate the weight of residue as percent grease and fats. t JAN-M-4643 Provided by IHSNot for Res
24、aleNo reproduction or networking permitted without license from IHS-,-,-JAN-M-454 23 = 7999706 029LL85 b -. F-4c. Aluminum,- F-4c (1). Preparation of solutions.- F-4c (i) a. 8-Hydroxyquhzoline solution.-Dissolve 6 gm. of 8- hydroxyquinoline in 10 ml. of glacial acetic acid. Dilute to 100 ml. th wate
25、r and filter if necessary. F-4c (1) b. Bromphenol blue indicator.-Dissolve 0.100 gm. of bromphenol blue powder in 20 ml. of 95-percent ethyl alcohol and dilute to 100 ml. with water. . FAc(2). Procedure.-Transfer an accurately weighed sample of 1.000 -t 0.0500 gm. of type A alloy or 0.7700 -i- 0.030
26、0 gm. of type B alloy to a 260 ml. beaker. Add 10 ml. of water, cover the beaker with a watch glass and add, dropwise, 20 ml. of concen- trated HCI through the opening at the lip o the beaker. After the reaction subsides, heat to boiling to assure complete solution. Wash the watch glass thoroughly a
27、nd drain the washings back to the beaker. Filter through a No. 41 Whatman or equivalent filter paper and catch the filtrate in an accurately calibrated, 1-liter - volumetricflask. Wash the filter paper thoroughly with hot water and make up to volume with water. Transfer a 100-ml. aliquot to a 260-ml
28、. beaker using an accurately calibrated buret or pipet. Add three drops of bromphenol blue indicator and neutralize the solution by adding dropwise and with constant stirrin a filtered 1:l “,OH solution until the yellow color changes to %he. Then add two drops of “,OH solution in excess Heat to boil
29、ing and add 18 ml. of the 8-hydroxyquinoline solution in small portions stir- ring after each addition to dissolve the precipitate that forms. Disregard any precipitate remaining after the completion of the addition of reagent. Heat to boiling and add 40 mi. of 2M i- ammonium acetate solution (164 g
30、m. er liter) dropwise with -with suction through a tared, fine-porosity, f ritted-glass bottom crucible. Wash the precipitate eight times with 154. portions of water releasing the suction before each addition and allowing the precipitate to remain in contact with the wash water for at least minute p
31、rior to the application of suction. Dry for 3 hours in an oven at 120“ to 14OoC., cool in a desiccator and weigh as ! i i L i I vigorous stirring, Place on a steam bag for 30 minutes. Filter . I (A-0.0874BW) 6.87 Al (ON) 8 o 0 for the Navy in accordance with the requirements of the Navy shipment Mar
32、king Handbook. H71. Use.-P?wdered magnesium-aluminum alloy is intended for H-2. Requests, requisitions, schedules, and contracts or orders i. NOTES use in ammunition. should contain the following features: (a) Title, number, and date of the specification. (b) Type rquired. (See par. B-1.) H3. A batc
33、h is defined as that quantity of material which has been subjected to some unit chemical or physical mixing process intended tu make the final product substantially uniform. . H+. This specification replaces Picatinny Arsenal Tentative Specification PXS-886. H-6. Copies of Joint Army-Navy specificat
34、ions and Federal specifications. (required for Army purchases) and U. S. Army . specifications may be obtained as indicated in the “Index of United States Army, Joint Army-Navy, and Federal Specifications Used by the War Department. Copies of this Index may be obpipd from the Superintendent -of Docu
35、ments, Government Printing Office, Washington-25, D. C. Agencies within the War Department will obtain copies of Joint Army-Navy, U. S. Army, and Federal specifications throu h established War De artment channels. Both the title and identifying symbol number. sgould be stipulated when requesting cop
36、ies of specifications. H-6. Copies of Joint Army-Navy specifications and Federal specifications (required for Navy purchases), Navy Department s ecifications and the Navy Shipment Marking Handbook may be ogtained upon application to the Bureau of Supplies and Accounts, Navy Department, Washington 25
37、, D. C., except that Naval activi- ties should make application to the Supply Officer in Command, Naval Supply Depot, Bayonne, N. J. Both the title and identify- ing symbol number should be stipulated when requesting copies of specifications H-7. Copies of this Joint Army-Navy specification (require
38、d for Army purchases) may be obtained from the Office, Chief of Ord- nance, War Department, Washington 26, D. C. Not1ce.-When Government drawines. oeciflcations. or other data are used for any purpose other than-in connection with a deflnitely related Government procurement openation the United States Gov- ernment thereby incurs no responsibility ndr any obligation whatso- ever; and the fact r Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
