1、MIL-DTL-4544qC m 9999906 2029245 286 m I INCH-POUND 1 MIL-DTL-45444C 26 November 1996 SUPERSEDING MIL-H-45444B (AR) 27 February 1974 DETAIL SPECIFICATION HMX (CYCLOTETRAMETHYLENETETRANITRAMINE) This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SC
2、OPE 1.1 Scope. This specification covers requirements, examinations and tests for two grades of HMX for use in explosive compositions as follows: Grade A - 93 percent minimum purity with the remainder being RDX Grade B - 98 percent minimum purity with the remainder being RDX 2. APPLICABLE DOCUMENTS
3、2.1 General. The documents listed in this section are needed to meet the requirements specified in sections 3, 4, and 5 of this specification. This section does not include documents in other sections of this specification or recommended for additional information or as examples. While every effort
4、has been made to ensure the completeness of this list, document users are cautioned that they must meet all requirements documents cited in sections 3, 4, and 5 of this specification, whether or not they are listed. I Beneficial comments (recommendations, additions, deletions) and any pertinent data
5、 which may be of use in improving this document, should be addressed to: Commander, U.S. Army ARDEC, ATTN: AMSTA-AR-EDE-S, Picatinny Arsenal, NJ 07806-5000 by i using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSMC N/A FSC 13
6、76 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-45444C m 9999906 2029246 112 W MIL-DTL-45444C e 2.2 Government documents. 2.2.1 Specifications, standards and
7、 handbooks. The following specifications, standards and handbooks 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 suppl
8、ement thereto, cited in the solicitation (see 6.2). SPECIFICATIONS FEDERAL RR-S-366 - Sieves, Standard for Testing Purposes STANDARDS DEPARTMENT OF DEFENSE MIL-STD-1168 - Lot Numbering of Ammunition MIL-STD-1235 - Single and Multilevel Continuous Sampling Procedures and Tables for Inspection by Attr
9、ibutes Qualification of Explosives MIL-STD-1751 - Safety and Performance Tests for DOD-STD-2101 - Classification of Characteristics (Unless otherwise indicated, copies of above specifications, standards, and handbooks are available from DODSSP - Customer Service, the Standardization Document Order D
10、esk, 700 Robbins Avenue, Bldg. 4D, Philadelphia, PA 19111-5094.) 2.2.2 Other Government documents, drawinus and publications. The following other Government documents, drawings and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues are th
11、ose cited in the solicitation. DRAWINGS Holston Army Ammunition Plant/Holston Defense Corp. Engineering Drawing No. 7651-1028.48, 7651-1028.49 icle sample as designated by the Cmtracting Officer for evaluation in accordance with provisions of 4.4.2, (see 6.2). The first article shall consist of five
12、 kilograms (11 pounds) of the composition obtained by sampling as described in 4.6.1. The samples shall be obtained from a production batch which has been produced by the contractor using the same production process, procedures and equipment as will be used in fulfilling the contract. All materials
13、shall be obtained from the same sources of supply as will be used in regular production. All samples submitted shall have been produced by the contractor using the same production process, procedures, equipment as will be used in regular production, and shall be accompanied by certificates of analys
14、is. Frior to submission, the contractor shall inspect the sample to the degree necessary to assure that it conforms to the requirements of the contract and submit a record of this inspection with the sample. A sample containing known defects will not be submitted unless specifically authorized by th
15、e Contracting Officer, (see 6.2). 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-45444C 777990b 2027252 4Lb m MIL-DTL-45444C 4.4.2 Inspections to be performed. The sample may be subjected by the Government to any or all of the examinations
16、 or tests specified-in 4.5.2.1 of this specification and any or all of the applicable drawings. (See DOD-STD-2101 for definitions of critical, major and minor classification of characteristics.) 4.4.3 Reiection. If any sample fails to comply with any of the applicable requirements (see 3.), the firs
17、t article quantity shall be rejected. The Government reserves the right to terminate its inspection upon any failure of a sample to comply with any of the requirements. 4.5 Conformance inspection. 4.5.1 Inspection lot formation. A lot shall consist of one or more batches of HMX produced by one manuf
18、acturer, 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 HMX that has been subjected to the same unit chemical or physical process intended to make the final product homogeneous
19、(homogeneity criteria). Units of product selected for inspection shall represent only the inspection lot from which they are drawn and shall not be construed to represent any prior or subsequent quantities presented for inspection. All material submitted for inspection in accordance with this specif
20、ication shall comply with the homogeneity criteria specified herein, regardless of the type of inspection procedure which is being applied to determine conformance with requirements. The lot shall be submitted for inspection in accordance with MIL-STD-1235 when applicable. The criteria and procedure
21、s for the assignment of lot numbers shall be in accordance with MIL-STD-1168. 4.5.2 Examinations and tests. a. Classification characteristics. Conformance examinations and tests are specified in the following classification of characteristics paragraphs. The contractors quality program or detailed i
22、nspection 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 in the specification (4.7.9.1 to 4.7.9.5), attributes sample inspection shall be conducted in
23、 accordance with Table III below, using the inspection levels stated in the classification of characteristics paragraphs. (See DOD-STD-2101 for definitions of critical, major and minor classification of characteristics.) 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without
24、license from IHS-,-,-MIL-DTL-4544YC m qqqqqOb 2029253 352 m MIL-DTL-45444C Table III Attributes sample inspection Inspection Levels Lot Size 2 to 8 9 to 15 16 to 25 26 to 50 51 to 90 91 to 150 151 to 280 281 to 500 501 to 1200 1201 to 3200 3201 to 10000 10001 to 35000 35001 to 150000 150001 to 50000
25、0 500001 and over I II III * * * * 1250 1250 1250 1250 1250 * * * * * 125 125 125 125 125 125 315 315 500 500 * * * 32 32 32 32 32 80 80 125 125 125 200 200 Numbers under inspection levels indicate sample size; asterisks (*) indicate one hundred percent inspection. If sample size exceeds lot size, p
26、erform one hundred percent inspection. Accept on zero and reject on one or more for all inspection levels. b. Alternative conformance inspection provisinm. Unless otherwise specified herein or provided for in the contract, alternative conformance procedures, methods or equipment, such as statistical
27、 process control, tool control, variables sampling or other types of sampling plans, etc., may be used by the contractor when they provide, as a minimum, the level of verification required by the provisions herein. Prior to applying such alternative procedures, methods or equipment, the contractor s
28、hall describe them in a written proposal submitted to the Government for evaluation (see 6.11). When required, the contractor shall demonstrate that the effectiveness of each proposed alternative is equal to or better than the specified conformance inspection provision(s) herein. In case of dispute
29、as to whether the contractors proposed alternative(s) provides equivalent assurance, the provisions of this specification shall apply. All approved alternative conformance inspection provisions shall be specifically incorporated into the contractors quality program or inspection system, as applicabl
30、e. 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-45444C m 9999906 2029254 299 m MIL-DTL-45444C 4.5.2.1 Classification of characteristics - HMX Classif- Examination/test Conformance Requirement Inspection ication criteria paragraph method
31、ref. Critical None defined Major 101 102 103 104 105 106 107 108 109 110 111 Alpha HMX content HMX content RDX content Melting point Insoluble particle Acetone insoluble material Inorganic insoluble Acidity Impact sensitivity Granulation Workmanship 4.6 4.6 4.6 4.6 4.6 4.6 4.6 4.6 4.6 4.6 4.6 3.2 3.
32、2 3.2 3.2 3.2 3.2 3.2 3.2 3.2 3.2.1 3.4 4.7.1 4.7.1 4.7.1 4.7.2 4.7.3 4.7.4 4.7.5 4.7.6 4.7.7 4.7.8 4.7.9 Minor None defined 4.6 Samplina and inspection equipment. Hazard Notice The materials described herein are flammable or explosive or both. Consequently, they present hazards in manufacture, hand
33、ling, storage and shipment. The contractor should recognize these hazards and take appropriate measures to guard and protect against fire, explosion, adverse environment, corrosive atmosphere, rough handling and electrically-induced incidents. 4.6.1 Samplinq. A representative sample of approximately
34、 300 grams shall be taken from each batch of HMX in accordance with ASTM Procedure E300 for solids. Samples shall be chosen in accordance with MIL-STD-1235, CSP-1 Plan, Inspection Level II, AQL 4.0%. (AQL are provided as indices to simplify the use of the table i-n MIL-STD-1235, but have no other me
35、aning relative to the sampling plan.) The samples shall be tested for compliance with requirements of 3.2, Table I of this specification. 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
36、 was tested and accepted and the batch which failed shall be tested in accordance with the applicable methods given in paragraph 4.7, If any of these batches fail to meet any of the test requirements, that batch shall also be rejected. In addition, after any failure of a batch the contractor will re
37、turn to 100 % inspection until “i“ successive batches are accepted as required by MIL-STD-1235. 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-DTL-45444C m 9999906 2029255 L25 m MIL-DTL-45444C 4.6.2 Inspection eauipment. Commercially availabl
38、e inspection equipment shall be used for all examinations and tests specified in 4.5 and 4.7. The contractor is responsible to have the necessary equipment available, use it correctly and to assure that proper calibration procedures are followed. The designation of an instrument of a particular make
39、 or model number is not intended to preclude the use of an equivalent make or model which is capable of performing the required test. Government approval of all inspection equipment is required prior to its use for acceptance purposes. Inspection equipment designs shall be submitted to the Technical
40、 Agency (see 6.9). 4.7 Methods of inspection. The following tests shall be performed using prescribed analytical procedures for replicate determination given in standard and analytical textbooks. Also, unless otherwise specified herein, all chemicals and reagents shall be ACS Grade or reagent grade
41、chemicals (see 6.10 for use of equivalent test methods). 4.7.1 Purity of HMX. The alpha HMX, beta HMX and RDX content of HMX shall be determined by x-ray diffraction as follows: A Philip Electronic Instrument x-ray diffractometer (or equivalent) equipped with voltage and current stabilizer, scintill
42、ation detector and copper target tube (1) shall be used for the determination of alpha HMX, beta HMX and the RDX content of HMX. The energy source tube of the instrument should be capable of an excitation of 40kV and a filament current of 20 ma. A pulse height analyzer capable of passing copper Ka (
43、alpha) radiation should be used. A nickel filter may be used to remove copper Kb (beta) radiation. Tube voltage and filament current can be selected by analyzing five of the calibration standards at two different settings. The x-ray diffraction patterns for alpha HMX, RDX, and beta HMX indicate char
44、acteristic diffractions at 17.81 degrees and 25.10 degrees two theta respectively for RDX and alpha HMX in the presence of beta HMX. (These angles may vary slightly according to the alignment of the instrument). Background intensities for RDX and alpha HMX can be measured at 16.90 degrees and 24.10
45、degrees two theta, respectively. Beta HMX, the major component, is determined by difference. Note 1: The x-ray equipment shall be operated in accordance with the manufacturers instructions. 4.7.1.1 Beta HMX. alpha HMX and RDX, for use as calibration standards. 4.7.1.1.1 HMX (betal and RDX calibratio
46、n standards. High purity HMX (beta) and high purity RDX suitable to be used as calibration standards are obtainable from Holston AAP/HDC; ARDEC, Picatinny Arsenal and the Naval Surface Warfare Center. (See 6.8). The HMX and RDX used for high purity standards shall have a minimum purity of 99.90%. 11
47、 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-45444C 9999906 2029256 061 9 MIL-DTL-45444C 4.7.1.1.2 Preparation of alpha HMX calibration standard. Add 4 grams of the purified beta HMX to 80 ml of (70% byweight) nitric acid. Heat until the
48、HMX dissolves. Filter the solution with filter paper and cool slowly to 30 degrees C. After one hour, filter the slurry using a medium porosity crucible. Wash the precipitate thoroughly with distilled water. Dry in a vacuum oven at 60 degrees C for two hours. Alpha morphology shall be verified by mi
49、croscopy or infrared spectroscopy before the alpha HMX is used as a calibration standard. 4.7.1.2 Purity analysis of RDX standard. Prepare RDX solvent by stirring 1,2 dichloroethane at room temperature for four hours in contact with HMX crystals. Solubility of HMX in 1,2 dichloroethane at room temperature (24 degrees C) is 0.02 gram per 100 ml. Accurately weigh approximately 0.2 gram of the RDX calibration standard to the nearest 0.1 milligram into a tared 125 ml
