1、. MIL-E-BLLLLB L3 77777Ob 035BbbL B m! - - MILITARY SPECIFICATION -37-/ MIL-E-8 1 1 1 1B 23 Qctober 1985 SUPERSEDING 22 February 1973 MIL-E-8 1 1 1 1 A(QS) EXPLOSIVE, PLASTIC-BONDED MOLDING POWDER (PBXN-5) This specification is approved for use by all Departments and Agencies of the Department of De
2、fense. 1. SCOPE 1.1 Scope. This specification covers a dimensionally stable, high strength, explosive composed of cyclotetramethylenetetranitramine (HMX) and a copolymer of vinylidene fluoride and hexafluoropropylene. The plastic-bonded explosive is referred to herein as “PBXN-5”. 1.2 Classificatin.
3、 PBXN-5 covered by this specification shall be of two types and three classes (see tables I and II). 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications and standards. The following specifications and standards form a part of this specifica- tion to the extent specified herein. Un
4、less otherwise specified, the issues 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 solicitation, SPECIFICATIONS Federal P-P-105 RR-S-366 Military MIL-T-339 MIL-H-45444 STANDARDS M
5、ilitary MIL-STD-105 MIL-STD-129 MIL-STD-286 Paper, Abrasive, Flint Sieve, Standard for Testing Purposes Tetryl KMX Sampling Procedures and Tables for Inspection by Attributes Marking for Shipment and Storage Propellants, Solid: Sampling, Examination and Testing Beneficial comments (recommendations,
6、additions , deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commanding Officer, Naval Ordnance Station, Standar- dization Division (524), Indian Head, Maryland 20640-5000, by using the self-addressed Standardization Docu- ment Improvement Prop
7、osal (DD Form 1426) appearing at the end of this document or by letter. FSC 1376 DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited. THIS DOCUI4ENT CONTAINS .I? PAGES Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-E
8、-BLLLLB L3 S 99779Ob 0358bb2 T m I ., MIL-E-81 I1 1B , . MIL-STD-650 : Explosive; Sampling, Inspection and Testing MIL-STD-1167 Ammunition Data Card 2.1.2 Drawings and publications. The following drawings and publications form a part of this specification to the extent specified herein. Unless other
9、wisk specified, the issues shall be those in effect on the date of the solicitation. DRAWINGS Naval Sea Systems Command (Code Ident 53711) LD705 18 . Impact Machine, Parts and Specifications for (Code Ident 10001) 1560935 Copolymer, Vinylidene Fluoride and Hexafluoropropylene Army Munitions Command
10、(Code Ident 19200) 7548644 Box, Packing for High Explosives, Assembly Details, Packing and Marking 7548645 Carton, Packing, Reuseable-Collapsible for High-Explosives, Assembly, Details, Packing and Marking PUBLICATIONS - Code of Federal Regulations 49 CFR 100-177 Transportation 49 CFR 178-199 Transp
11、ortation (Application for copies should be addressed to the Superintendent of Documents, Government Printing Office, Washington, D.C. 20402.) (Copies of specifications, standards, drawings and publications required by manufacturers in connection with specific acquisition functions should be obtained
12、 from the contracting officer). 2.2 Other publications. The following document forms a part of this specification to the extent specified herein. The issues of the documents which are indicated as DoD adopted shall be the issue listed in the current DoDISS and the supplements thereto, if applicable.
13、 American Society for Testing and Materials ASTM E 300 Recommended Practice for Sampling of Industrial Chemicals (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, Pa. 19103.) (Industry association specifications and standar
14、ds are generally available for reference from libraries. They are also distributed among technical groups and using Federal agencies.) 2.3 Order of Precedence. In the event of a conflict .between the text of this specification and the references cited herein, -the text of this specification shall ta
15、ke precedence. Nothing in this specification, however, shall supersede applicable laws and regulations unless a specific exemption has been obtained. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-E-8 1 11 1B 3. REQUIREMENTS 3.1 General materi
16、al requirements. 3.1.1 Materials. Composition of PBXN-5 shall be as shown in table I. TABLE I. Composition. Ingredient Document Percent by weight I Batch / Lot Copolymer (vinylidene fluoride 4.2 to 5.8 4.5 to 5.5 Drawing 1560935 and hexafluoropropylene) from one manufxturer HMX Remainder by differen
17、ce MIL-H-45U2/ 1/ Each batch must meet the requirements of 3.1.2.4. 2/ HMX used for Type I shall be Grade B, Class 5; HMX used for Type II shall be Grade B and consist of 75.0 & 3.0 parts by weight of Class 1 and 25.0 f 3.0 parts by weight of Class 5. 3.1.2 Product characteristics. When tested in ac
18、cordance with section 4 of this specification, PBXN-5 shall meet the following product characteristics. 3.1.2.1 Moisture content. Moisture content of PBXN-5 shall not be more than 0.15 percent by weight. 3.1.2.2 Density. The density of PBXN-5 shall be greater than 96.5 percent of the theoretical max
19、imum densi- ty (TMD). 3.1.2.3 Granulation. Granulation of PBXN-5 shall meet the requirements of table II, TABLE II. Granulation for types I and II. Characteristic Particle size 11 Through No. 4 sieve Through No. 20 sieve Through No. 40 sieve Through No. 50 sieve Class 1 Minimum Maximum Minimum Maxim
20、um Minimum Maximum Percent by weight Percent by weight Percent by weight Class 3 Class 2 98 100 100 100 100 100 O 2 O 5 100 100 50 100 O 5 1/ U.S. Standard sieve in accordance with RR-S-366. 3.1.2.4 Impact sensitivity. The PBXN-5 shall exhibit an impact sensitivity height (50 percent point) equal to
21、, or greater than, the impact sensitivity height of a comparison sample of tetryl, which complies with MIL-T-339. 3.1.2.5 Vacuum thermal stability (VTS) at 120“ Celsius (“C). The volume of gas evolved by 5 grams (g) of PBXN-5 at 120C during 48 hours of test shall not exceed 0.5 milliliter (ml) per g
22、ram. 3.1.2.6 Dry bulk density. The dry bulk density of the PBXN-5 shall be not less than 0.7 g per ml. 3.1.2.7 Autoignition temperature. The autoignition temperature shall be 225C or above. 3.1.2.8 Abrasion resistance. When tested in accordance with 4.4.4.9, the weight loss of PBXN-5 pellets shall n
23、ot exceed 2.0 percent. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-E-BLLLLB L3 W 7794706 0358bbY 3 W I MIL-E-81111B 3.1.2.9 Machinability. The PBXN-5 shall be machinable with water as a coolant and shall not crumble or fracture during such
24、operation and not be defective as determined by 4.4.4.10.1. 3.2 First article. When specified, a sample shall be subjected to first article inspection (see 4.1.2.1 and 6.3). 3.3 Workmanship. The PBXN-5 shall be of zniform quality and shall be manufactured in accordance with accepted industry standar
25、ds for the production of high quality explosive materials. The PBXN-5 shall be free from metal inclusions, wooden particles, and other foreign materials (other than those permitted for HMX in accordance with MIL-H-45444). 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless othe
26、rwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitable for the perfor- ma
27、nce 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 the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements
28、. 4.1.1 Classification of inspections. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.1.2.1). b. Quality conformance inspection (see 4.2). 4.1.2 Special tests and examinations. 4.1.2.1 First article inspection. When specified in the contrac
29、t or purchase order (see 6.3), a first article sam- ple shall be subjected to all the requirements of table III. Failure to meet any of the requirements shall be cause for rejection of the first article sample. 4.1.2.2 Disposition of first article sample. Disposition of the first article sample shal
30、l be as specified in the contract or purchase order (see 6.2.1). TABLE III. First article and quality conformance inspections. Test or examination Composition Moisture Density Granulation Impact VTS at 100C Bulk density Autoignition Abrasion resistance Machinability Workmanship Req. para. 3.1.1 3.1.
31、2.1 3.1.2.2 3.1.2.3 3.1.2.4 3.1.2.5 3.1.2.6 3.1.2.7 3.1.2.8 3.1.2.9 3.3 Test para. 4.4.4.1 4.4.4.2 4.4.4.3 4.4.4.4 4.4.4.5 4.4.4.6 4.4.4.7 4.4.4.8 4.4.4.9 4.4.4.10 4.4.4.11 First article X X X X X X X X X X X Quality conformance Lot Batch X X X X X X X X X X X 4 . .- . Provided by IHSNot for ResaleN
32、o reproduction or networking permitted without license from IHS-,-,-MIL-E-811 11B 4.2 Lot size. A lot shall consist of a blend of one or more batches of molding powder produced by one manufac- turer, in accordance with the same specification or specification revision, under one continuous set of ope
33、rating conditions. The maximum lot size shall be 5,000 pounds. A batch is defined in 6.4.1. Each lot shall be tested in accordance with those tests specified in table III. 4.3 Acceptance sampling. 4.3.1 Sampling by lot. Sampling shall be performed as specified herein and in accordance with ASTM E 30
34、0 for solids, A minimum of 4.5 kilograms (kg) of PBXN-5 shall be sampled from each lot as follows: a. A primary sample shall be taken from three or more locations throughout each container into which the lot is placed. The weight of the material taken from each location shall be at least 1.5 kg. Eac
35、h sample thus taken shall be thoroughly mixed. b. The primary samples shall be mixed together thoroughly, then divided into two equal portions to prepare two composite samples. Each composite sample shall be placed in a clean, dry container. These containers shall be sealed and shall be marked with
36、the identity of the sample, including the material name, suppliers name, contract number and lot number. One of the composite samples shall be stored in a safe place accessible to the testing facility in the event it is needed for testing. The remaining composite samples shall be subjected to all of
37、 the specified chemical and physical tests in accordance with table III. 4.3.2 Sampling by batch. An inspector shall select a sample of not less than 454 g (1 pound), representative of the batch, from each batch, in accordance with ASTM E 300. The sample shall be submitted for the deter- mination of
38、 the tests in accordance with table III. Batches not meeting the requirements defined in 3.1.1 , 3.1.2.4 and 3.3 shall be rejected. 4.3.3 Examination of filled containers. Sampling plans and procedures for the following classifications of defects shall be in accordance with MIL-STD-105. Wooden box o
39、r fiberboard carton, prior to closing (see Drawing 7548644 or 7548645 as applicable). Catagory Defect Method of Inspection Code No. (see 6.5) Critical None defined Major 101 102 103 Critical None defined Major 101 102 103 Minor 201 202 203 Liner pierced or torn Liner improperly closed Foreign matter
40、 AQL 0.65 percent Visual Visual Visual Oloql 01002 01003 Sealed wooden box (see Drawing 7548644). AQL 0.65 percent Box damaged Top improperly assembled Strapping broken or loose Visual Visual VisuaVManual AQL 1.50 percent Nail protruding Marking misleading or unidentifiable Strapping improperly asse
41、mbled 5 Visual Visual VisuaVManual 02001 02002 02003 02m 02005 02006 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-E-BLLLLB L3 W 9977906 0358666 7 m MIL-E411 f1B Sealed fiberboard carton (see Drawing 7548645) Critical None defined Major AQL 0.6
42、5 percent 101 Assembly torn or pierced Visual 03001 102 Lot number misleading or unidentifiable Visual 03002 103 Strapping broken or loose VisuaVManual 03003 Minor 201 Marking misleading or unidentifiable Visual 03004 4.4 Acceptance tests. The test procedures of 4.4.4 shall be used to determine that
43、 the requirements of this specification have been met. Any change in the test procedures employed shall be subject to prior approval of the contracting activity. Unless otherwise specified, all tests shall be performed in triplicate. The average of the three results shall be taken as the test result
44、. 4.4.1 Special test equipment. The following items of special test equipment are required to perform the ac- ceptance tests set forth in this specification. Items of laboratory test equipment in general use will be referenced in the individual test procedures. a. ERL-Bruceton type drop test machine
45、, 220 centimeters (cm) maximum drop height (calibrated in b. Circulating-air oven with an accurate control temperature (k 2C) in the range of 60C to a max- Q c. General Radio Noise Meter, Type 1982-9710 or equal. d. Vacuum stability apparatus (see 4.4.4.6). e. Autoignition temperature apparatus (see
46、 4.4.4.8.1). 0.1 log units), and equipped with “type 12 tools” (see LD70518 and 4.4.4.5). imum of 150C. 4.4.2 Test conditions. Unless otherwise specified herein, the following test conditions shall apply: a. Temperature: Ambient (between 18” and 35C) b. Altitude: Normal ground elevation of test faci
47、lity c. Humidity: Ambient (not exceeding 95 percent relative). 4.4.3 Preparation of test samples. 4.4.3.1 Density, abrasion resistance and machinability. Prepare from one composite sample (selected in ac- cordance with 4.3.1) 35 cylindrical pellets having approximate dimensions of 0.5 inch diameter
48、by 0.85 inch length 20 for density (see 4.4.4.3), 5 for abrasion resistance (see 4.4.4.9), and 10 for machinability (see 4.4.4. lo) as follows: a. Dry the PBXN-5 for a minimum of 24 hours in a desiccator containing a fresh indicating-type desiccant. b. Remove the sample from the desiccator. Weigh ou
49、t 5 g of PBXN-5 (weighed to the nearest 0.05 g) for each test pellet to be pressed. Place the weighed charges in individual containers (small, stainless steel or aluminum beakers). 6 . .- i _. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-E-BLLLLB 13 9777706 0358667 9 MIL-E-8 1 1 11B c. Place the individual charges into a circulating-air oven, previously stabilized at 120“ rt 2C.
