1、MIL-P-71053 (AR) 22 June 1994 MILITARY SPECIFICATION PAX-2A EXPLOSIVE COMPOSITION This specification is approved for use by the US Army Armament, Munitions and Chemical Command and is available for use by all Departments and Agencies of the Departments of Defense. 1. SCOPE 1.1 ScoDe. This specificat
2、ion covers the requirements and quality acceptance provisions for manufacture and acceptance of PAX-2A, a high energy pressable explosive composition. 2, APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Snecifications, standards and handbookz. The following specifications, standards and handbook
3、s form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2) SPECIFICATION
4、S FEDERAL TT-E-751 - Ethyl Acetate, Technical MI L I TARY MIL-G-155 - Graphite, Dry (For Use In Ammunition) MIL-H-45444 - HMX MIL-A-48078 - Ammunition, Standard Quality Assurance Provisions, A General Specification For MIL-C-005537 - Cellulose Acetate Butyrate (CAB) Beneficial comments (recommendati
5、ons, additions, deletions) and any pertinent data which may be of use in improving this document, should be addressed to: Commander, U.S. Army ARDEC, ATTN: SMCAR-BAC-S, Picatinny Arsenal, NJ 07806-5000 by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of
6、this document or by letter. AMSC N/A FSC 1376 ON STATEWT 4, Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STANDARDS MILITARY MIL-STD-109 - Quality Assurance Terms and Definitions Examination a
7、nd Testing Testing. Inspection and Testing. MIL-STD-286 - Propellants, Solid: Sampling, MIL-STD-650 - Explosive: Sampling Inspection and MIL-STD-1235 - Single and Multilevel Continuous (Unless otherwise indicated, copies of federal and military specifications, standards and handbooks are available f
8、rom DODSSP - Customer Service, Standardization Documents Order Desk, 700 Robbins Avenue, Bldg. 4D, Philadelphia, PA 19111-5094.) 2.1.2 Other Government documents, drawinss and gublications. The following other Government documents, drawings and publications form a part of this document to the extent
9、 specified herein. Unless otherwise specified, the issues are those cited in the solicitation. DOCUMENTS OD26254 - Density of Casting Powder WS 1141 - Bis (2,2-Dinitropropyl) Acetal-Bis (2,2-Dinitropropyl) Formal, Mixture Of , (BDNPA/F) (Copies of other Government documents, drawings and publication
10、s required by contractors in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting activity.) 2.2 Non-Government Dublications. The following documents forms a part of this document to the extent specified herein. Unless othe
11、rwise specified, the issue of documents which are DoD adopted are those listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2). AMERICAN SOCIETY FOR
12、TESTING AND MATERIALS ASTM E300 - 86 Recommended Practice for Sampling Industrial Chemicals. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-71053 (AR) (Application for copies of ASTM Standards should be addressed to the American Society for
13、Testing and Materials, 1916 Race Street, Philadelphia, Pennsylvania 19103) 2.3 Order of nrecedence. In the event of conflict between the text of this document and the references cited herein, the text of this document shall take precedence. Nothing in this document, however, supersedes applicable la
14、ws and regulations unless a specific exemption has been obtained. (See contract provisions for additional precedence criteria). 3. REQUIREMENTS 3.1 Materials. The explosive composition shall consist of HMX, nitroplasticizer, cellulose acetate butyrate and Titanate Coupling Agent as a processing aid
15、and shall conform to the requirements of this specification. 3.1.1 ComDosition. The explosive composition shall conform to Table I. TABLE I. Chemical ComDosition % Tolerances (% 1 HMX 85.00 - + 2.00 BDNPA/F 9.00 + 1.00 CAB 6.00 - + 1.00 CAB-O-SIL (TS-530) 0.50 Nominal (see note) Graphit e 0.02 0.065
16、 max (see note) NOTE: CAB-O-SIL (TS-530) and Graphite shall be measured on an added basis. 3.1.1.1 m. HMX shall be conform to the requirements of MIL-H-45444. The average particle size distribution for each sample at the 50th percentiles shall be 4.75 L 2.35 microns when tested as specified in 4.5.1
17、. 3.1.1.2 BDNPA/F. The acetal/formal shall be in accordance with WS 1141. 3.1.1.3 m. The cellulose acetate butyrate shall be Type II conforming to the requirements of MIL-C-005537. 3.1.1.4 CAB-O-SIL (TS-530). The CAB-O-SIL shall be a treated fumed silica and hydrophobic. 3 Provided by IHSNot for Res
18、aleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-71053 (AR) 3.1.1.5 CraDhite. The PAX-2A composition shall be graphite coated with Grade III and IV graphite conforming to the requirements of MIL-G-155. 3.1.1.6 Total volatiles. The total residual solvent content of the ex
19、plosive composition shall be 0.02 percent maximum as determined in accordance with 4.5.2. 3.1.1.7 Grain density. The density of the PAX-2A grain shall be 1.724 gram/cc minimum. 3.1.1.8 Phvsical form. The explosive shall be in extruded strands of 0.10 inch diameter, cut to 0.10 .O1 inch on the averag
20、e length. 3.1.1.9 Insoluble Darticles. The composition shall have no insoluble particles retained on a USS Sieve NO. 40, and not more than 5 insoluble particles retained on a USS Sieve NO. 60 when tested as specified in 4.5.5. 3.1.1.10 Ethvl Acetate. Ethyl Acetate process solvent, shall conform to T
21、T-E-751. 3.2 First article insnection. This specification contains provisions for first article inspection. Requirements for the submission of first article samples by the contractor shall be as . specified in the contract. 3.3 Foreian matter. The composition shall be free of metal inclusions, wood
22、and other foreign matter when tested as specified in 4.4.2.1. 3.4 Process controls. The contractor shall submit a Process Control Document to the Government specifying the process variables which are considered critical for the production of the PAX-2A explosive composition. The Process Control Docu
23、ment shall be submitted in accordance with 4.3.4. 4. OUALITY ASSURANCE PROVISIONS 4.1 ResDonsibilitv for insDection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements (examinations and tests) as specified he
24、rein. Except as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the in
25、spections set forth in the specification where such inspections are deemed necessary to ensure supplies and services conform to prescribed requirements. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-7L053 4.1.1 ResDonsibilitv for comDliance
26、. All items shall meet all requirements of Sections 3 and 5. The inspection set forth in this specification shall become a part of the contractor overall inspection system or quality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the resp
27、onsibility of ensuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract. Sampling inspection, as part of manufacturing operations, is an acceptable practice to ascertain conformance to requirements, however, this does not authorize
28、 submission of known defective material, either indicated or actual, nor does it commit the Government to accept defective material. 4.1.2 General nrovisions. Unless otherwise specified herein, the provisions of MIL-A-48078 apply and form a part of this specification. Reference shall be made to MIL-
29、STD-109 to define quality assurance terms used herein. 4.2 Classification of insnectiong. The inspections requirements specified herein are classified as follows: a) First article inspection (See 4.3). b) Quality conformance inspection (See 4.4) 4.3 First article insDection. 4.3.1 Submission. The co
30、ntractor shall submit a first article sample as designated by the Contracting Officer for evaluation in accordance with provisions of 4.3.2. The first article sample shall consist of ten (10) pounds of PAX-2A. 4.3.2 InsDection to be nerformed. As determined by the Government, the first article assem
31、blies, components and test specimens may be subjected to any or all of the examinations and tests specified in this detail specification and be inspected for compliance with any or all requirements of the applicable drawings. 4.3.3 Reiection If test specimen fails to comply with any of the applicabl
32、e requirements, the first article sample shall be rejected. The Government reserves the right to terminate inspection upon any failure of a test specimen to comply with any of the requirements. 4.3.4 Process control. The contractors quality program plan or detailed inspection plan shall include docu
33、mented process controls which detail the specific procedure involved in the manufacture of PAX-2A composition. These documented process Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-71053 controls shall be submitted to the contracting Officer
34、 for review and approval by the technical agency in accordance with the approved data item description (DID) specified on the Contract Data Requirements List in the contract. The process control document shall contain a description of the process, all materials used, process conditions and procedure
35、s, production and inspection equipment used, and all methods used to ensure that the PAX-2A composition meets the requirements of this specification. In addition, whenever there is a change (change in source of materials, process conditioning procedures, etc.) from previously documented process cont
36、rol data, the technical agency shall be notified of the new process control data and the reason for the change. 4.4 Oualitv conformance insDection. 4.4.1 Insnection lot formation. Inspection lots shall comply with lot formation provisions of MIL-A-48078. In addition, a lot shall consist of one or mo
37、re batches of PAX-2A of one composition designation only, produced by one manufacturer, in accordance with the same specification, or same specification revision, under one continuous set of operating conditions. Each batch shall consist of that quantity of PAX-2A that has been subjected to the same
38、 unit chemical or physical mixing process intended to make the final product homogeneous. In addition, each lot shall contain: a. HMX of one type only, from one interfix lot number from one manufacturer only. b. BDNPA/F from one interfix lot number from one manufacturer. c. CAB from one interfix lot
39、 number from one manufacturer. d. CAB-O-SIL (TS-530) from one interfix lot number from one manufacturer. 4.4.2 Examination and tests. a. Classification of characteristics. Quality conformance examinations and tests are specified in the following Classification of Characteristics paragraphs. The cont
40、ractors quality program or detailed inspection system shall provide assurance of compliance of all characteristics with the applicable drawing and specification requirements utilizing as a minimum the conformance criteria specified. When cited herein, sampling inspection shall be conducted in accord
41、ance with paragraph 4.4.2.1. b. Alternative aualitv conformance nrovisions. Unless otherwise specified herein or provided for in the contract, alternative quality conformance procedures, methods, or 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-M
42、IL-P-71053 m 9999906 L985050 935 equipment, such as statistical process control, tool control, other types of sampling procedures, etc., may be used by the contractor when they provide, as a minimum, the level of quality assurance required by the provisions, specified within. Prior to applying such
43、alternative procedures, methods, or equipment, the contractor shall describe them in a written proposal submitted to the Government for evaluation (see 6.5). When required, the contractor shall demonstrate that the effectiveness of each proposed alternative is equal to or better than the specified q
44、uality assurance provision(s) herein. In case of dispute as to whether the contractors proposed alternative(s) provides equivalent assurance, the provisions of this specification shall apply. all approved alternative provisions shall be specifically incorporated into the contractors quality program
45、or detailed inspection system, as applicable. 4.4.2.1 Samnlina for chemical and Dhvsical testinq. Sampling for test 4.5.1 through 4.5.6. Approximately 500 grams of explosive composition shall be selected from each batch to be sampled using ASTM Procedures E300-86 for solids. Samples shall be sampled
46、 for inspection in accordance with MIL-STD-1235, CSP-1 Plan, Inspection Level II. If any sample fails to meet any test requirement the batch represented by the sample shall be rejected. All batches produced between the time that the last batch was tested and accepted and the batch which failed shall
47、 be tested in accordance with the applicable methods given in 4.5. If any of these batches fail to meet any of the test requirements, that batch shall also be rejected. The classification of defects shall be as shown Table II. Table II Chemical and Phvsical Testinq Insnection/Reauirement Composition
48、 (see 3.1.1) Volatiles (see 3.1.1.6) Physical form (see 3 .l. 1.8) Insoluble Particles (see 3.1.1.9) Defect Classification Major Major Major Major 4.4.3 Insoection eauiDment. The Government reserves the right to inspect the contractors equipment and determine that he has available and utilizes corre
49、ctly, measuring and test equipment of the required accuracy and precision and that test instruments are of the proper type and range to make measurements of the required accuracy. Commercial inspection equipment shall be employed, where applicable for all tests and examinations specified. The contractor is responsible for assuring proper calibration procedures are followed. Government approval of all inspection equipment is required prior to its use for acceptance
