1、MIL-P-70q56C 13 W 9997906 0354673 L W MIL-P-70456C (AR) 28 April i989 SUPERSEDING MIL-P-70456B (AR) 18 November 1985 MILITARY SPECIFICATION PROPELLANT, STICK, M31AlE1 FOR USE IN CHARGE PROPELLING M203A1 This Specification is approved for use within the U.S. Army Armament Munitions and Chemical Comma
2、nd, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers M31AlE1 stick propellant for use in the 155MM propelling charge, M203A1 (zone 8) for the 155MM Howitzer, M198. 1.2 Classification. The propellant shall be Type II,
3、 cy 1 indr i cal, slotted , s ingle -per for ated stick . 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 sp ecifications, standards and handbooks. The following specifications, standards and handbooks form a part of this specification to the extentspecified herein. Unless otherwise specifie
4、d, the issue of these documents shall be those listed in the issue of the Department of Defense Index of Specifications and Standards (DoDISS) and supplement thereto, cited in the sol ic it at ion. SPECIFICATIONS MILITARY MIL-P-116 - Preservation, Methods of MIL-P-193 - Potassium Sulfate (For Ordnan
5、ce Use) MIL-D-218 - Dibutylphthalate (For Use In Explosives) MIL-N-244 - Nitrocellulose . MIL-N-246 - Nitroglycerin Bencciai commcnts (recommendations, additions, deletions) and any pcrinent data which may be of use in improving this document should be addrd to: Commander, U.S. hy Annament, Munition
6、s, and Chemical Commaad, Ath. AMSMCQA, Picatinny Amenai, New Jerscy 07806-5000 by using the self-addressed Standardization Document Improvement Proposai (DD Fom 1426) appeariag at the end of this document or by letter. AMSC NIA 1376 Provided by IHSNot for ResaleNo reproduction or networking permitte
7、d without license from IHS-,-,-MIL-P-70456C (AR) MIL-E-255 - Ethyl centralite (carbamite) MIL-C-306 - Carbon black, powder, dry MIL-N-494 - Nitroguanidine (Picrite) MIL-Q-9858 - Quality Program Requirements MIL-A-48078 - Ammunition, Standard Quality Assurance Provisions, General Specification for MI
8、L-C-70462 - Charge Propelling, 155MM, M203A1 Loading, Assembling and Packing STANDARDS MILITARY MIL-STD-105 - Sampling Procedures and Tables for MIL-STD-286 - Propellants, Solid: Sampling, MIL-STD-1235 - Single and Multi-Level Continuous Inspection by Attributes Examination and Testing Sampling Proc
9、edures and Tables for Inspection and Attributes (Unless otherwise indicated, copies of federal and military specifications, standards, and handbooks are available from the Naval Publications and Forms Center, (ATTN: NPODS), 5801 Tabor Avenue, Philadelphia, PA 19120-5099.) 2.1.2 Other Government docu
10、ments, drawinqs, and publications. The following other Government documents, drawings, and publica- tions form a part of this specification to the extent specified herein. Unless otherwise specified, the issues shall be those in effect on the date of the solicitation. DRAWINGS U.S. ARMY ARMAMENT RES
11、EARCH DEVELOPMENT AND ENGINEERING CENTER (ARDEC) 9345104 - Propellant and Liner Assembly 9390418 - Packing and Marking for Box, Wood, Nailed for Box, Fiberboard, for Propellant, Stick, for Charge, Propelling, 155MM M203A1 9390472 - Barrier bag 9390474 - Packing and Marking for Box, Fiberboard for Pr
12、opellant Stick M31AlE1 (Copies of specifications, standards, drawings, publications and other Government documents required by contractors in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) the text of this spe
13、cification and the references cited herein, (except for associated detail specifications, specification sheets or MS standards), the text of this specification shall take 2.1.3 Order.of precedence. In the event of a conflict between 2 Provided by IHSNot for ResaleNo reproduction or networking permit
14、ted without license from IHS-,-,-MIL-P-7045hC 13 b 0354b75 5 M MIL-P-70456C (AR) precedence. Nothing in this specification, however, shall supersede applicable laws and regulations unless a specific exempt ion has been ob ta ined. 3. REQUIREMENTS O 3.1 Constituent material. The constituent materials
15、 of the stick propellant shall comply with the requirements of the applicable specification as follows: . Constituent Mater ia1 Dibutylphthalate Nitroce llu lose Nitroglycerin Nitr oguanid ine Potassium Sulfate Ethyl centralite Carbon Black Conform to Specification MIL-D-218 MIL-N-244, Type I, Grade
16、 A MIL-N-246, Type I MIL-N-494, Class I, MIL-P-193, Type I Type II MIL-E-25 5 MIL-C-306 3.2 Propellant compositions and chemical properties. The compositions and chemical properties of M31AlE1 stick propellant shall conform to the requirements of Table I when tested in accordance with the applicable
17、 test methods in 4.5.1.4. Table I I Propellant compositions and chemical properties* Properties Percent Nit roce llu lo se 21.50 - + 1.30 Type I, Grade A Cotton Linters only Nitroglycerin 18.00 - + 1.00 Ni troguan id ine 54.70 - + 1.00 Potassium Sulfate 1.25 - + 0.25 Di bu ty lphtha la te 3.0 - + 0.
18、30 Ethyl Centralite 1.50 - + 0.10 Carbon Black Grade A 0.05 + 0.05 Total Volatiles 0.40 Maximum *The composition shall be calculated on total volatiles free basis. a Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-70956C 13 9999906 0354696 7 I
19、MIL-P-70456C (AR) 3.3 Form and dimension. The form and dimension of the stick I propellant shall conform to the requirements below when tested in accordance with test method in 4.5.1.2. 3,3,1. Form. The stick propellant shall be cylindrical, slotted, straight and single-perforated 3.3.2 Dimension. T
20、he following requirements regarding stick propellant dimensions shall govern unless authorization for departure is given by the procuring activity concerned prior to manufacture of the propellant. 3.3.2.1 Len th. The stick propellant shall be with length 3.3.2.2 Diameter-. The diameter of stick prop
21、ellant shall specified 28 74- 7 8 inch to 29 1/8 inch. comply with either the mean variation or the standard deviation uniformity requirements shown in Table II. TABLE II Mean variation and standard deviation of individual dimensions expressed as a percentage of the mean dimension. Percent Percent D
22、 imens ian Mean Variation Standard Deviation Max irnum Maximum Di ame ter 3.125 4.75 I 3.3.2.3 Perforation -. diameter ratio. The average stick diameter fD) shall be approximately three times the average diameter of the perforation (a). 3.3.2.4 Web measurement. The standard deviation of the web meas
23、urements, expressed as a percent of the average web measure- ment, shall not Be greater than 10 percent. 3-.4 Weiqhts 3.4.1 Averaqe stick weiqht anfi weiqht standard deviation. I_- The average stick weight and weiqht standard deviation of the propel- lant shall be determined in accordance with 4.5.1
24、.1. 3.4.2 Stick propellant bundle weiqht. The weight of a bundle of one hundred (loa) stick propellants shall be determined in accordance with 4 . 4.2 2. 4 . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.4.3 Charge weight loadability. The charge
25、weight required to meet the ballistic performance as specified in paragraph 3.9 shall be capable of being loaded in the combustible cartridge case with an additive liner with propellant weight not more than 29.0 lb. In addition, the contractor responsible for manufacturing of stick propellant shall
26、perform the trial loading in accordance with 4.5.1.5 and the 29-lb stick propellant bundle with an additive liner shall be loaded into the combustible cartridge case or an inert cartridge case without any difficulty. O 3.5 Stability. For heat test conducted at 120 degrees centi- grade, the propellan
27、t shall not change the color of the methyl violet test paper to a salmon pink color in less than 40 minutes when tested in accordance with 4.5.1.4. 3.6 Heat of explosion. Heat of explosion of the stick propel- lant shall be 850.0 - + 30.0 cal/gm when determined in accordance with 4.5.1.4. 3.7 Densit
28、y. The density of stick shall be 1.63 gm/cc minimum 3.8 Closed bomb. Relative quickness and relative force at when determined in accordance with 4.5.1.4. 90F, 1450F and -4OOF shall be defermined in accordance with 4.5.2. 3.9 Proving ground 3.9.1 Proving ground assessments. The propellant when fired
29、in a M198 Howitzer with a M199 cannon with 80% (minimum) remaining life and with the Projectile PXR-6325 (preferred to M549 inert or M549A1 if HE projectile is to be fired) with a 96.0 + 0.1 pounds (lbs) as fired projectile weight, and charges manufactured in accordance with MIL-C-70462 (see 6.9) sh
30、all comply with the following requirements when tested as specified in 4.5.3. To meet requirements of lot formation of MIL-A-48078, the calibration lot charges will be loaded at the same time by the contractor responsi- ble or charge manufacture. lant at recommended charge weight shall not produce a
31、 chamber pressure greater than 57,950 psi at any operating temperature (-65OF to +1450F) when fired in a standard weapon (see 6.7) . 3.9.1.1 Permissible individual maximum pressure. The propel- 3.9.1.2 1450F pressure. At standard weapon conditions and recommended ckarge weight, the average pressure
32、plus 2.2 times the standard deviation shall not exceed 57,950 pounds per square inch (psi) at 145OF. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_- MIL-P-70956C 13 m 7799906 0359698 O m MIL-P-70456C (AR) I 3.9.1.3 Charge establishment phase. At
33、 70 degrees Fahrenheit (OF) and standard weapon conditions, the propellant shall be capable of assessment to a velocity of 2710 feet per second (fps). I 3.9.1.4 Uniformity phase ,3.9.1.4.1 Uniformity of velocity. The standard deviation of velocity for the lot at 700F shall not exceed 7.0 fps. 3.10 P
34、ressure/temperature coefficient. The pressure/tempera- ture coefficients between 700F and 1450F and between 700F and -650F shall be determined in accordance with 4.5.3.4. 3.11 Blending process control. A propellant lot shall be a minimum of 75,000 lbs. The contractor shall assure that each lot has b
35、een sufficiently blended to meet the ballistic uniformity requirements (see 3.9). The contractor shall submit a blending process control document to the government specifying the blending process control steps which are considered critical for meeting the ballistic uniformity requirements. The blend
36、ing process control document shall be submitted in accordance with 4.1.2. 3.12 Contract data requirements (see 6.2) 3.13 Preproduction sample inspection and first article test This specification contains technical provisions for (see 4.3). preproduction sample inspection and first article test. Requ
37、irements for submission of preproduction samples and first article test samples by the contractor .shall be as specified in the contract. 3.14 Workmanship. The best commercial practices shall be used in the formulation of propellant furnished under this specifica- tion, and al1 other applicable docu
38、ments. The propellant and its standard ingredients shall be protected from the action of direct sunlight and acid fumes. Unless otherwise specified, no reground propellant or nitrocellulose shall be used in the manufacture of propellant procured under this specification. 4. QUALITY ASSURANCE PROVISI
39、ONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements as specified herein. or purchase order, the contractor may use his own or any other facilities suitable for the perfor
40、mance of the inspection requirements specified herein, unless disapproved by the Exce# as otherwise specified in the contract 6- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-70Ll56C 13 W 9999906 035LI699 2 = MIL-P-70456C (AR) Government. The
41、 Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. 4.1.2 Responsibility for compliance. All items must meet all requirements of sections 3 and
42、5. The inspection set forth in this specification shall become a part of the contractor Is overall inspection system or quality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of assuring that all products or supplies su
43、bmitted to the Government for acceptance comply with all requirements of the contract . Sampling in quality conformance does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to acceptance of any defective material. 4.1.2 Submission o
44、f blendinq process control document. The contractor shall prepare a process control document which details all of the specific procedures involved in propellant blending processing operations. As a minimum, the document shall detail the procedures of accumulation of sublots prior to initiating final
45、 blending. This document shall be part of the contractors quality program requirement in accordance with MIL-Q-9858. It shall be submitted to the contracting officer for review by the technical agency. The contractor shall not initiate production without written approval of the blending procedures f
46、rom the contracting officer. Once approved the contractor shall not change the process without written approval from the contracting officer (6.13) . O 4.2 Classification of inspectiez. The following inspections shall be conducted on this material: a. Preproduction sample inspection and first articl
47、e test b. Quality conformance inspection (see 4.4) . (see 4.3). 4.3 Preproduction sample inspection and first article test. 4.3.1 Preproduction sample (pilot lots)_. The preproduction sample is intended to provide the necessary information to estab- lish the propellant granulation needed to meet the
48、 required ballistic parameters. granulations for approval by Government Engineering and Product Assurance, which, from experience, are expected to bracket the requirements of this specification. The contractor shall submit a 4.3.1.1 Submission: _.- The contractor shall select propellant Provided by
49、IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-P-7045bC 13 7777706 0354700 5 E MIL-P-70456C (AR) preproduction sample as designated by the Contracting Officer for evaluation in accordance with 4.3.1.2, usually consisting of up to three pilot lots of approximately 2500 lbs each, representing each of the candidate granulations. 4.3.1.2 Inspections to be performed. Each of the pilot
