1、MIL-P-17447 13 E 777770b 0277258 3 9 . *- .- -_ MIL-?- i7449 (Nord) SUPERSEDING NAVY-$P14( Ord) 25 October, i946 29 October 1953 MILITARY SPEC iF ICAT ION POWDER, PROPELLAN!, CORDITE N 1, SCOPE .- 1.1 Scope. - This specification covers propellant powder 1-2 Classification. - The powder shall be of t
2、he following for Naval guns. types, as specified in the contract or order (see 6.1): Type I - Cylindrical rnult i-perforated grains. Type II- Cylindrical single-perforated grains. 2. APPLIGABLE SPECIFICATIONS, STANDARDS, DRAWINGS AIID 2.1 The following speolficationa, standa-ms and drauinge, . PmLI
3、CAT I O NS of the issue in effect on date of invitation for bids, form a part of this specification: SPECIFICATIONS MILITARY JAN-A-463 - Alcohol, Ethyl (For Ordnance Use). JAN-A-489 - Acetone (For Ordnance Use). - Ethyl Centralite (Carbatnite): ? - Vitroce1lulose (For Use in Explosives). JAN-N-246 -
4、 Nitroglycerine . JAN-N-494 - Nitroguanidirie (Picrite) JAN-P-193 - Potassium Sulphate (For Ordnance Use) . JAN-P-270 - Towder, Propellent, Cannon. JAN-II-323 - Powder, Propellent, Cannon, M2 and 15. JAN-P-381 - Powder, Propellent , 4.2“ Chemical Mortar Provided by IHSNot for ResaleNo reproduction o
5、r networking permitted without license from IHS-,-,-MIL-P-17449 (Nord) NAVY DEPARTMENT General Specifications for Inspection of Material BUREAU OF ORDNANCE OS 1666 - Powder, Propellent, US Navy Guns - Ballistic Appendix, Navy STANDARDS MILITARY MIL-STD-129 - Narking of Shipments DRAWINGS BUREAU OF O
6、RDNANCE Packing Box MK 7 and Mods, except Nod 1. ( Copies of specifications, standards, drawings and publica- tions required by contractors in connection with specific procurement functions should be obtained fronr the procuring agency or as directed by the contracting officer.) issue in effect on d
7、ate of invitation for bids, forms a part of this specification, 2.2 Other publications. - The following publication, of the CODE OF FEDERAL REGULATIONS 49 CFR 71.1 - Transportation, Interstate Corrmerce Commission, Explosives and Other Dangerous Articles, (Copies of the regulations cited are obtaina
8、ble from the 3. REQUIREMENTS Superintendent of Documents, Government Printing Office. ) 3.1 Materials, - The raw materials used in the manufacture of the powder shall conform to the applicable specifications listed in 2.1. grades shall be as indicated: For the following materials, the types and 2 I
9、Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-17 diameter of botton! 40 mm., inside of neck tapered from-15 mm. to i3 mm. diameter). Place the glass stopper horizontally on the mouth of the bottle and heat for 2 hours in an oven at looo k 2OC
10、 with all vents closed. Replace the stopper, cool in a desiccator, and weigh. % Total volatiles LOSS in weight X 100 Weight of sample 4.2.2.2 Nitrocellulose. - Transfer the residue from the 1025gm, sample extraction in 4.2.1to a 4.00 ml beaker, cover with a 100 ml of acetone, stir and allow to stand
11、 overnight - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-l_ll I_ - _- MIL-P-17447 13 m 799970b 0299265 O U under a bell. jar. material at the bottom of the beaker is dispersed throughout the solution. Add 25 ml of distilled water containing 2-3 d
12、rops of concentrated hydrochloric acid dropwise with constan stirring. If the solution is not acid to litmus make just acid with dilute hydrochloric acid. After the addition of the acid solution allow the mixture to stand for a few minutes until the nitrocellulose all coagulates, then add 100 161 of
13、 water. Heat the mixture on a steam bath until all of the acetone has boiled off. The nitrocellulose precipitate thus obtained i5 coarsely granular and easy to filter. Filter the hot mixture through a tared sintered glass filtering crucible in a vacuum bell jar, catching the filtrate in a 4-00 ml be
14、aker. Wash the residue of nitrocellulose in the crucible a few times with hot water until free of chlorides. Reserve the filtrate and washings for the determination of potassium sulfate (see 4.2.2.7). . at 95-1000C., cool in a desiccator and weigh. Calculate the weight of residue to percentage of ni
15、trocellulose in the sample. Stir the mixture again until all the Dry the crucible and contents to constant weight 4.2.243 Nitroglycerin. - 4.2.2.3.1 Reagents. - Reagent determination shall be prepared TAN-P-323 solutions for the nitroglycerin as described in Specification 4.2.2.3.2 Procedure, - Diss
16、olve the dried extract from the extraction of the two 1.25 gm. samples or of the 5gm. sample in l+.2.l(b) with 50 to 100 m1 of glacial acetic acid, transfer to a 250 ml volumetric flask, make up to volune with glacial acetic acid and mix thoroughly. Avoid temperature changes between the time of maki
17、ng up to volume and taking the aliquot for analysis. Using carbon dioxide, displace the air in a 500 ml titration flask equipped with a ground glass neck and a side arm carrying a Yo. 2 one-hole rubber stopper. A glass tube through this stopper is connected to a carbon dioxide tank. (A special titra
18、tion flask suitable for this determination is described in JAN-P-323). Transfer a 50 ml aliquot to the titration flask. Continue to pass carbon dioxide through the flask until the titration is completed. After carbon dioxide has passed through the flask for about five minutes, add i5 ml of 1:l hydro
19、chloric acid and pipette in exactly 25 ml of approximately 0.7 normal ferrous chloride solution. Connect a reflux condenser to the flask and reflux gently for about i5 minutes. Completion of the reaction i5 indicated by the color of the mixture, which has darkened upon heating, changing to a light r
20、eddish brown. After the reduction, increase the rate of flow of the carbon dioxide to prevent Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-17449 (Nord) air being sucked back as the flask is cooled. by immersing in a vesselaf water, add 3 ml
21、of 20-percent ammonium thiocyanate solution and titrate with approximately 0.2 normal titanous chloride solution until the red color disappears. Run a blank on the ferrous chloride solution using the same quantities of reagents as in the titration of nitroglycerin, Calculate the percentage of nitrog
22、lycerin in the sample as follows: Cool the flask 20.523 (V-3)N VJ Percent nieroglycerin 1 where V = m1 titanous chloride solution used in titration of sample B ml titanous chloride solution used in blank N = normality of titanous chloride solution W = weight of sample represented by the aliquot port
23、ion corrected for total volatiles and flash eliminating salt, 1!+,2.2.4 Ethyl centralite. - i+.2.2.4.l Reagents. - Reagents for this determination shall be prepared as described in Specification JAN-P-323. The use of acetic acid as a solvent is satisfactory. 4.2.2,4,2 .Procedure. - Dissolve the drie
24、d extract frorti the extraction of the5gm.sample of 4.2.1 with 50 ml of alcohol, transfer to a 100-ml volumetric flask, make up to volume with alcohol and mix thoroughly. aliquot to a 500 ml glass-stoppered Erlenmeyer flask by means of a pipette. Add 20 ml of 0.2 normal potassium bromide-potassium b
25、romate solution from a pipette, the mixture to 15-200C. of KI solution, add 10 ml of 1:l hydrochloric acid and quickly stopper the flask, then shake thoroughly for 45 seconds. Immediately add 20 ml of 15 percent potassium iodide solution and titrate without delay the liberated iodine with 0,l Normal
26、 sodium thiosulfate solution to a colorless endpoint, using 5 ml of starch indicator. Run a blank exactly as in the ethyl centralite determination, using 25 ml of alcohol instead of the alcoholic solution of the extract. lite in the sample as follows: Transfer a 25-nil Cool Moisten the stopper with
27、a drop Calculate the percentage of ethyl centra- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-6.71 (B-V)N Percent ethyl centralite z W where B = ml Na2S203 used in,blank V = ml Na 3203 used in titration of sample W = weight of sample in the aliquo
28、t corrected for total volatiles and flash eliminating salt . N = norma P ity of Na2S203 4.2.2.5 Nitroguanidine. - The nitroguanidine is determined by difference. The percentage of nitroguanidine equals 100 minus the sum of the percentages of nitrocellulose, calcium carbonate, ethyl centralite and ni
29、troglycerin determined in the sample, 4.2,2.6 Alkalinity as CaC03. - 4.2.2.6.1 Reagents. - Bromphenol blue indicator. - AddO.1gmof bromphenol blue to i5 ml of 0.1 normal soium hydroxide in a small beaker and stir until dissolved. Dilute this solution to 100 ml. of concentrated hydrochloric acid, sp.
30、 gr. 1.18 in a 1000 ml volumetric flask and make up to volume with distilled water free of carbon dioxide. Hydrochloric acid, approximately 0.1 normal. - Place 10 ml Sodium hydroxide, 0.1 normal. - Dissolve50gmof sodium hydroxide in 5Oml of distilled water, transfer Lo a 100 ml test tube and avoid w
31、etting the top. Stopper tightly with a cork covered with tin foil and let stand in a vertical position until the supernatant liquid is clear. Carefully withdraw the required amount (sufficient liquid to give 4gm. XaOH per liter of solution), dilute quickly with recently boiled distilled water and pr
32、eserve in a paraffined bottle with a two-hole stopper carrying a glass siphone tube with stopcock, and a soda-lime guard tube. To standardize the NaOH solution, accurately weigh about lgjr.of reagent grade potassium acid phthalate dried at 100C and transfer to a 300 ml flask. Add 50 ml of distilled
33、water, free from carbon dioxide, stopper the flask, and shake gently until the sample is dissolved. When the sample is in solution, add 3 drops of Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-a 1-percent solution of phenolphthalein and titrate wit
34、h the approximately 0.1 normal solution of sodium hydroxide. Calculate the normality of the solution as follows: Normality of sodium hydroxide = w 0.2042 v where W = weight of potassium acid phthalate V = ml of sodium hydroxide solution used. 4.2.2,6.2 Procedure. - Transfer a5gmportion of the ground
35、 sample to a 500 ml glass-stoppered Erlenmeyer flask, add 100 ml of acetone and, after shaking for a few minutes allow the mixture to stand for a few hours or overnight. shaking to precipitate the nitrocellulose and then add 10 ml of 0,l normal hydrochloric acid from a pipette. Add 1.5 ml of bromphe
36、nol blue indicator and titrate the solution with 0.1 normal sodium hydroxide solution until the appearance of a permanent blue-violet color, Run a blank determination on the reagents. Calculate the per- centage alkalinity in the sample as follows: W Add 25 ml of water dropwise with constant Percent
37、alkalinity as CaC03 = .5 (B-V)N where B I ml NaOH solution for blank V = ml NaOH solution for sample N I normality of NaOH solution W weight of sample corrected for total, volatiles and flash eliminating salt 4.2.2.7 Potassium sulfate. - To the filtrate from the nitrocellulose determination (see 4.2
38、.2.2) add 1 or 2 drops of concentrated hydrochloric acid, adjust the volume to about 100 ml and heat to boiling. Add slowly, with vigorous stirring, 10 ml of 10 percent barium chloride solution, cover the beaker and warm on a steam bath for a few hours or over- night, Filter while warm through a tar
39、ed filtering crucible, transferring the precipitate with the aid of a policeman, and wash with warm water until free of chlorides. the solution to cool enough to cause precipitation of nitro- guanidine. Do not allow Dry and ignite for 10 minutes at 800 to 900C, Provided by IHSNot for ResaleNo reprod
40、uction or networking permitted without license from IHS-,-,-MIL-P-l7449(YOrd) cool in a desiccator and weigh. potassium sulfate in the sample as follows: Percent 2004 = 7Zts. - Ballistic tests shall be conducted 4.2.7 Grain form and dimensions. - Determinations of grain form and dimensions shall: be
41、 as specified in Specification JAN-P-270. the caliber of gun. Upon acceptance, marking shall be added to show the “index number“ of that powder lot. “index number“ shall consist of the letters ltSPCGtr followed by the number assigned by the Bureau of Ordnance for that powder lot, For each caliber, t
42、he number used in theIrlot designation“ for a contractor shall begin with lot 1 for the first lot made by each contractor and continue consecu- tively for all subsequent lots made by that contractor for the same caliber. The 6, NOTES 6,l Procurement documents should specify the following: Title, num
43、ber and date of specification. Type of grain (see 1.2). Percent of potassium sulfate or other flash eliminating salt to be added (see 3.2.3). Process approval (3.3.1). Information concerning government material furnished. Information on inspection and acceptance conditions. In case the powder fails
44、to pass the ballistic tests in the weapon for which it was intended, the Bureau of Ordnance may, if deemed to its interest, accept the powder, upon its meeting the specifications for any other weapon. Notice. - When Governrent drawings, specifications, or other data are used for any purpose other th
45、an in connection with a definitely related Government procurement operation the United States Government thereby incurs no responsibility nor any obligation whatsoever; and the fact that the Govern- ment may have formulated, furnished, or in any way supplied Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
