1、. f MIL-E-82756 W 9999906 1976438 T50 I INCH-POUND I MILE82756(OS) 4 Amil 1994 SUPERSEDING WS 128L 25 November 1991 MILITARY SPECIFICATION EXPLOSIVE, PLASTIC-BONDED, CAST PBXN-103 is specification is approved for use by the Naval Sea Systems Command, Department of the Navy, and is available for use
2、by all departments and agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification establishes the minimum requirements for procurement of one type of plastic-bonded explosive, cast PBXN-103, for use in ordnance. 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specification
3、s and standards. The following specifications and standards 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
4、thereto, cited in the solicitation (see 6.2). SPECIFICATIONS MILITARY MIL-A-192 Ammonium Perchlorate, Technical MIL-E-255 Ethyl Centralite (Carbamite) MIL-R-2257 8 Resorcinol Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this docu
5、ment should be addressed to: Commander, Indian Head Division, Naval Surface Warfare Center, Standardization Branch (Code 8420), 101 Strauss Avenue, Indian Head, MD 20640-5035 by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or sending a
6、letter. AMSC NIA FSC 1376 DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited. O Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MILE82756(OS) MIL-A-8272 8 Aluminum Powder, Atomized (For Use In Explosives) STANDARDS MILIT
7、ARY MIL-STD-105 Sampling Procedures and Tables for Inspection by Attributes MIL-STD-129 Marking for Shipment and Storage MIL-STD-286 Propellants, Solid: Sampling, Examination and Testing (Unless otherwise indicated, copies of military specifications, standards, and handbooks are available from: Stan
8、dardization Documents Order Desk, Bldg. 4D, 700 Robbins Avenue, Philadelphia, PA 191 11-5094.) 2.1.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherw
9、ise specified, the issues are those cited in the solicitation (see 6.2). WEAPON SPECIFICATIONS NAVAL SEA SYSTEMS COMMAND (CAGE Code 5371 1) WS 12236 Ammonium Perchlorate (For Use In Rocket Motors) WS 12794 Ammonium Perchlorate WS 12797 Triethylene Glycol Dinitrate WS 12798 Metriol Trinitrate WS 1279
10、9 Pelletized Nitrocellulose WS 18485 Ammonium Perchlorate (For Use in PBX Explosives) (Application for copies should be addressed to the Commander, Naval Service Warfare Center, Indian Head Division (Code 8410P), 101 Strauss Avenue, Indian Head, MD 20640-5035.) PUBLICATIONS CODE OF FEDERAL REGULATIO
11、NS (CFR) 49 CFR Parts 100 to 199 Transportation (Application for copies of CFRs should be addressed to the Superintendent of Documents, U.S. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-E-82756 I 7777906 1776440 b09 - MILE82756(OS) Governmen
12、t Printing Office, Washington, D.C. 20402.) 2.2 Non-Government publications. The following document forms a part of this O document to the extent specified herein. Unless otherwise specified, the issue of the document which is DOD adopted is that listed in the issue of the DODISS cited in the solici
13、tation. 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). CHEMICAL PROPULSION INFORMATION AGENCY CPIA Publication No. 21 Solid Propellant Mechanical Behavior Manual (Copies may be obtained from the Chemic
14、al Propulsion Information Agency, Applied Physics Laboratory, Johns Hopkins University, 862 1 Georgia Avenue, Silver Spring, Maryland 209 10.) (Non-Government standards and other publications are normally available from the organizations that prepare or distribute the documents, These documents also
15、 may be available in or through libraries or other informational services.) 2.3 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws
16、 and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. Unless otherwise specified in the contract or order (see 6.2), a sample shall be subjected to first article inspection (see 6.3) in accordance with 4.4. This first article sample shall be manufactured
17、in accordance with the formulation of table I using the procedures, techniques, and facilities proposed for production. 3.2 Formulation. The formulation of PBXN-103 shall comply with the requirements of table I and 3.2.1 when tested in accordance with 4.6.1, 4.6.2, or 4.6.3 as applicable. The raw ma
18、terials for the explosive shall conform to the specifications listed in table I. 3.2.1 Mixed plasticizer. The mixed plasticizer, which may be supplied as a single ingredient, shall consist of triethylene glycol dinitrate (TEGDN), metriol trinitrate (MTN), ethyl centralite (EC), and resorcinol. The m
19、ixed plasticizer shall provide the chemical analysis listed in table I when determined in accordance with 4.6.1, 4.6.2, or 4.6.3 as applicable. The total moisture content of the mixed plasticizer shall be no greater than 0.2 percent when determined as specified in 4.5.1 and 4.6.4. 3.3 Product charac
20、teristics. PBXN-103 shall meet the requirements of 3.3.1 through 3.4 when tested in accordance with section 4. 3.3.1 Moisture content. The total moisture content of the explosive material shall be no greater than O. 15 percent when determined as specified in 4.6.4. 3 Provided by IHSNot for ResaleNo
21、reproduction or networking permitted without license from IHS-,-,-MILE82756(OS) Percent by Weight Theoretical Minimum Maximum TABLE I. PBXN-103 formulation. Specification Ingredient 7.5 42.0 Pelletized nitrocellulose (PNC) (percentage as nitrocellulose) WS 12799, Grade A, Type I or II, Classes 2 or
22、3, 1-30 second viscosity WS 18485, WS Grade C, Class 4, or WS 12236. Class 1 12794, MIL-A- 192, Ammonium perchlorate (AP) Resorcinol 0.2 0.2 0.4 MTN 23 .O 21.0 25 .O TEGDN 2.5 2.0 3.0 EC 1.3 1.3 1.7 Aluminum MIL-R-22578 WS 12798 WS 12797 MIL-E-255, Class 3 6.0 40.0 6.0 38.0 27.0 I 25.0 I 29.0 1 MIL-
23、A-82728 II Mixed Plasticizer WS 12799, Pelletized Nitrocellulose will contain EC. The amount of PNC used must account for the fact that part of it is EC. The composition limits are a minimum of 6.0 and a maximum of 7.5 percent nitrocellulose. The EC percentage in the mixed plasticizer must be adjust
24、ed (reduced) by the amount added with the PNC. 3.3.2 Tensile strength. Tensile strength shall be determined using either a cut or cast sample of PBXN-103. Tensile strength of a cut sample of PBXN-103 shall be greater than 60 pounds per square inch (psi) when determined as specified in 4.6.5.1. Tensi
25、le strength of a cast sample of PBXN-103 shall be greater-than 90 psi when determined as specified in 4.6.5.2. Strain at maximum stress for cut and cast samples shall not be less than 9 percent. 3.3.3 Vacuum stability. The PBXN-103 vacuum stability shall not exceed 1.00 mL/g in 40 hours at 100C when
26、 tested in accordance with 4.6.6. 3.4 Workmanship. The PBXN-103 explosive shall be free from foreign materials and shall be manufactured in a manner to assure compliance with all the requirements of this specification. The workmanship exhibited in the first article sample shall be evaluated to deter
27、mine acceptability. The approved standards of workmanship will thereby become a minimum requirement for all material offered for acceptance. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-E-2756 9999906 1976442 481 MIGE82756(OS) 4. QUALITY ASS
28、URANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order (see 6.2), the contractor is responsible for the performance of all inspection requirements (examinations and tests) as specified herein. Except as otherwise specified in the contract or
29、 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 inspections set forth in this specification where such i
30、nspections are deemed necessary to ensure supplies and services conform to prescribed requirements. 4.1.1 Responsibility for compliance. All items shall meet all requirements of sections 3 and 5. The inspection set forth in this specification shall become a part of the contractors overall inspection
31、 system or quality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of ensuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract. Sampling inspection, a
32、s part of manufacturing operations, is an acceptable practice to ascertain conformance to requirements, however, this does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to accept defective material. 4.2 Classification of inspectio
33、ns. The inspection requirements specified herein are classified as fol lows : a. First article inspection (see 4.4) b. Quality conformance inspection (see 4.5) c. Periodic in-process quality conformance inspection (see 4.5.1) 4.3 Test conditions. Unless otherwise specified herein, the following test
34、 conditions shall apply: a. Temperature between 70 and 80F b. Humidity: Ambient (but not exceeding 95 percent, relative) c. Altitude: Ground elevation of the test facility 4.4 First article inspection. A representative sample of 500 pounds of material, or any amount equivalent to the weight required
35、 to fill ten units of the ordnance items to be loaded, shall be manufactured in accordance with 3.1. First article inspection shall consist of subjecting the sample taken according to 4.5.2 and 4.5.3 to all of the examinations and tests specified in 4.6. Failure of the first article sample to pass a
36、ny inspection or to meet the requirements of this specification shall be cause for rejection of the first article sample. Prior to approval of the sample, acquisition of materials or the initiation of production will be at the sole risk of the contractor. 4.5 Quality conformance inspection. The qual
37、ity conformance inspection shall consist of subjecting the samples taken according to 4.5.2 and 4.5.3 to all of the tests and examinations 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-E-82756 9999906 1976443 318 specified in 4.6. Lot definit
38、ion, formation, and size shall be in accordance with MIL-STD-105 and shall consist of a single batch. A batch shall be defined as in 6.4.1. Failure of any test result or examination to meet any requirement of this specification shall be cause for rejection of the lot. 4.5.1 Periodic in-process produ
39、ction inspection. Unless otherwise specified in the contract or purchase order (see 6.2), a sample of mixed plasticizer shall be taken once per month and subjected to the test given in 4.6.4. Failure to meet the requirements of that test shall be cause for rejection of the batch and shall require re
40、peating the periodic in-process tests on the next batch. 4.5.2 Sampling for cured explosive. After addition of all ingredients, thorough mixing, and removal of the mixing agent, a sample shall be taken from each lot and ladled into a CAPLUG number 1120, or equivalent container, until the container i
41、s full. This sample shall be cured under the same temperature and cure conditions as the explosive-loaded ordnance item. The sample shall be prepared for testing as follows: a. The test specimens for the tensile test of 4.6.5.1 shall be cut from the center of the cured sample. The tests specified in
42、 4.6.1 (or 4.6.2), 4.6.6, and 4.6.7 shall be run on the remaining two pieces. b. The test specimens for 4.6.5.2 shall be cast into an appropriate mold, and the tests specified in 4.6.1 (or 4.6.2), 4.6.6, and 4.6.7 shall be run on the casting after the test specified in 4.6.5.2 has been performed. 4.
43、5.3 Sampling for uncured explosive. After addition of all ingredients, thorough mixing, and removal of the mixing agent, a sample shall be taken from each lot and placed into a non-porous container. The sample shall be subjected to testing in accordance with 4.6.3 and 4.6.4. 4.6 Test procedures. The
44、 subsequent procedures shall be used to determine that the requirements of this document have been met. Any proposed change in test procedures or equipment shall necessitate, before adoption, prior approval of the contracting activity. In case of dispute between the results from any proposed method
45、or equipment and what is cited herein, the results using the methods and the equipment specified in this specification shall prevail. Unless otherwise specified, all tests shall be run in duplicate. The average of the two results shall be taken as the test result. 4.6.1 Cured PBXN-103 ingredient ana
46、lysis. The chemical composition of the cured PBXN-103 shall meet the requirements of table I when tested by the methods described in 4.6.1.1 through 4.6.1.7 or in 4.6.2. 4.6.1.1 Sample preparation. Cut the sample from 4.5.2 into thin slices with a knife. Accurately weigh a 5-gram sample to methylene
47、 chloride in a soxhlet extraction apparatus for 16 hours. Transfer the methylene chloride extract to a 500-mL separatory funnel, and extract with two successive 50-mL portions of 5 percent sodium carbonate solution. 1 mg, place in an extraction thimble, and extract with 4.6.1.2 Resorcinol. Determine
48、 the resorcinol content by measuring the absorbance of the 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-E-82756 9999906 3976444 254 MILE82756(OS) sodium carbonate solution at 288 millimicrons (A) with a Beckman DK-2 Spectrophotometer, or an
49、equivalent instrument, using the following procedure: a. b. C. d. e. f. g. h. Prepare a standard curve (see step e) as follows: Weigh 25.0 f 0.2 mg of pure resorcinol and dissolve in 100 mL of 5 percent sodium carbonate solution. Dilute with water to exactly 250 mL and use as a stock solution to make the dilutions for the standard curve. Place 4, 6, 8, and 10 mL of the stock solution in 100 mL volumetric flasks and dilute to the mark with water. These standard
