1、JAN-C-677 b8 7777706 OLL4067 h/-S?-O 7 JAN-C-677 30 SEPTEMBER 1948 NATIONAL MILITARY ESTABLISHMENT SPECIFICATION CELLULOSE; REGENERATED, STRIP (For Use in Ammunition) Thin specillcation was approved by the Departmentseof the Amr. the Navy. and the Air Force for use of procurement services of the rea
2、pec- tive Departments. A. APPLICABLE SPECIFICATIONS A-1. The following specifications, of the issue in effect on date of invitation for bids, form a part of this specification. JOINT ARMY-NAVY SPECIFICATION U. S. ARMY SPECIFICATION Contractors, JAN-N-246-Nitroglycerin. 100-2-Standard Specification f
3、or Marking Shipments by B. GRADE B-l. This specification coveh one grade of regenerated cellulose strip furnished in two width classes. C. MATERIAL AND WORKMANSHIP C-l. The material shall be furnished in 4-ply strip cemented or bonded together with a water-insoluble adhesive. The matekial shall be t
4、ransparent, clear, and free from bubbles and other blem- ishes which would render the material unfit for the purpose in- tended. Splicing of the strip shall not be permitted. D. GENERAL REQUIREMENTS D-l. Tensile strength.-Maximum, 17,000 p.8.i. in the long dirw tion. D-2. Neutrality.-When tested as
5、specified in paragraph Fab, the water in which the strip has been immersed shall be neutral to litmus. D-3. Resistance t nitroglycerin.-When tested as specified in paragraph F-c, the material shall mot swell or permit the pas-, sage of nitroglycerin. D-4. Thickness.4.006 f 0.0006 inch. E. DETAIL REQ
6、UIREMENTS El. Widths.- E-la. % f 1/52 inch. Elb. 6/46f1/52 inch. F-l. Size of lot.-The lot size shall be as specified in the con- F. METHODS OF SAMPLING, INSPECTION, AND TESTS tract or order. f- THIS DOCUMENT CONTAINS 3 PAGES, Provided by IHSNot for ResaleNo reproduction or networking permitted with
7、out license from IHS-,-,-2 F-2. Sampling.-Samples shall be selected in sufficient size and number to perform the tests. They shall be representative of the lot. F-3. Zmpection.-Unless otherwise specified in the contract or order, inspection shall be made at the point of delivery. F-4. Tests.- F-4a.
8、Tensile strength.-A minimum of 10 samples, 6 inches in length are necessary for performance of the tensile strength test, The samples shall be conditioned at 73“ f 2F. and 60 f 2 percent relative humidity for 16 hours prior to test. Tensile strength tests shall be made on a Scott tensile tester or e
9、quivalent testing device. The distance between the jaws shall be 4 inches. F4b. Neutrality.-Three samples, 24 inches long, shall be im- mersed in 60 ml. of water, neutral to litmus, for 4 hours at 70“ to 80F. At the end of this period, the water shall be tested for neutrality to litmus. F-4c. Resist
10、ance to nitroglycerin.-Ten samples, 3 inches long, shall be suspended horizontally by gripping the ends with a suit- able holder. Place three drops of hitroglycerin, conforming to Joint Army-Navy Specification JAN-N-246, on the top surface of each sample at intervals of % inch. The drops. shall be 0
11、.06 20.02 ml. in volume. Place the samples in an oven at 60“ f 3C. for 48 hours. At the end of that time, remove the sample, allow to cool, and withdraw the drops of nitroglycerine with the corner of blotting paper. (Immediately destroy the nitroglycerine by immersing the blotting paper in a solutio
12、n of 10 percent KOH in ethyl alcohol.) Remove the sample from the holder and examine the underside to determine whether any nitroglycerine has passed through the strip or has caused swelling. G. PAXAGINO. PACKING, AND MARKING FOR SHIPMENT G-l. The strip shall be packed in flat coils having a maximum
13、 outside diameter of 6 inches and an inside hole diameter of 1% inches, The coils shall be clamped together in such a manner as to eliminate coning of the coils during storage. G-2. Marking.-In addition to any special marking required by the contract or order, shipments for the Army shall be marked
14、in accordance with the requirements of the U. S. Army Specification 100-2. E. NOTES H-1. Regenerated cellulose strip covered by this specification is intended for use in primer vent seals for small arms ammunitipn. H-2. This specification replaces Frankford Arsenal Tentative .Specification FXS-466.
15、. H-3. Copies of this specification (required for Dbpartment of the Army purchases) may be obtained from the Office, Chief of Ordnance, Department of the Army, Washington 26, D. C. JAN44771 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1 JAN-C-b77
16、68 m 9999906 03340b9 B W 3 Notice.-When Government drawinpi, swcifications, or other daa are used for any purpoae other than in connection with a denitely related Government pr+ cutement operation. the United States Government thereby incurs no responsibility nor any obligation whatsoever; and the f
17、act that the Government may hive formulated furnished or in any way supplied the said drawingo, specicntions or other dita is not & be regarded by implication or-otherwise an !u any map& licenaine the holder or any other pemn or corporation, or convemne any nghh or permiasion to maunfacture, uae,ot seli any patented invention that may In any way be related thereto. ARMY: O. JAN-C-677 I o PROBLEM - HARD CPY Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
