1、flIL-DTL-4bO3D H 0b 2074373 2T3 I INCH-POUND I MIL-DTL-4 60 8 3D (MR) 30 September 1998 SUPERSEDING MI L-A- 4 60 8 3C (MR) 29 July 1988 DETAIL SPEC1 FI CATI ON ALUMINUM ALLOY ARMOR, EXTRUDED, WELDABLE This specification is approved for use by all Departments and Agencies of the Department of Defense
2、. 1. SCOPE 1.1 Scope. This specification covers extruded aluminum alloy armor shapes up to and including 2 inches in thickness (see 3.3 and 6.2). 1.2 Classification. Material furnished under this specification should be one of the following classes (see 6.2): Class I - 5083 and 5456 Class II - 7039
3、and 2219 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specigied in sections 3 and 4 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 has
4、 been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements documents cited in sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The fol
5、lowing specifications, standards, and handbooks form a part of this specification 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
6、, cited in the solicitation (see 6.2). Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Director, U.S. Army Research Laboratory, Weapons and Materials Research Directorate, ATTN: AMSRL-WM-M, Aber
7、deen Proving Ground, MD 21005-5069 by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC N/A AREA FORG Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-46083D = 99999
8、0b 2074372 b3T MIL-DTL- 4 6 O 83D (MR) STANDARDS DEPARTMENT OF DEFENSE MIL-STD-662 - V50 Ballistic Test for Armor (Unless otherwise indicated, copies of the above specifications, standards, .and handbooks are available from the Defense Automated Printing Service (DAPS), Building 4D, 700 Robbins Aven
9、ue, Philadelphia, PA 19111-5094.) 2.3 Non-Government publications. The following documents form a part of this specification to the extent specified herein. Unless otherwise specified, the issues of the documents which are DoD adopted are those listed in the issue of the DoDISS cited in the solicita
10、tion. 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 NATIONAL STANDARDS INSTITUTE (ANSI) ANSI H35.2 Dimensional Tolerances for Aluminum Mill Products (DoD adopted) (Application for copies shou
11、ld be addressed to the American National Standards Institute, 11 West 42nd Street, New York, NY 10036.) AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM B557 Tension Testing Wrought and Cast Aluminum and Magnesium- Alloy Products (DoD adopted) ASTM E34 Chemical Analysis of Aluminum and Aluminu
12、m-Base Alloys (DoD adopted) ASTM E227 Optical Emission Spectrometric Analysis of Aluminum and Aluminum Alloys by the Point-to-Plane Technique (DoD adopted) ASTM E607 Optical Emission Spectrometric Analysis of Aluminum and Aluminum Alloys by the Point-to-Plane Technique, Nitrogen Atmosphere (DOD adop
13、ted) ASTM E716 Sampling Aluminum and Aluminum Alloys for Spectrochemical Analysis ASTM E1251 Optical Emission Spectrometric Analysis of Aluminum and Aluminum Alloys by the Argon Atmosphere, Point-to-Plane, Unipolar Self-Initiating Capacitor Discharge (DoD adopted) (Application for copies should be a
14、ddressed to the American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) 2.4 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 doc
15、ument, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specified in the contract or purchase order (see 6.2) and before production has commenced, samples of the specified item shall be made available to the co
16、ntracting officer or his authorized representative for approval 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-4bO83D m 0b 2074373 076 W MIL-DTL-46083D (MR) * in accordance with 4.3.1. The approval of the first article samples authorizes t
17、he commencement of production but does not relieve the supplier of responsibility for compliance with all applicable provisions of this specification. The first article samples shall be manufactured by the process proposed for use on production. 3.1.1 Change in mill processing. After an armor materi
18、al has successfully complied with the requirements of this specification, any deliberate chanae in the-mill processing by the manufacturer Chal1 be drawn ti the attention of the procuring activity and the contractor. If the material processing is changed, the first article tests of this specificatio
19、n may be again called upon to assure compliance with the requirements of this specification. 3.2 Chemical composition. The chemical composition limits for class I and class II materials shall be within the limits shown in table I (see 6.2). TABLE I. Chemical composition limits, (weight percent). Sil
20、i- max. max. Each Total Class Alloy con Iron Copper Manganese Magnesium Chromium Zinc Titanium Others, rnax. Aluminum I 5083 0.40 0.40 O.los/ 0.40-1.0 4.0-4.9 0.05-0.25 0.252/ 0.15g/ 0.05 0.15 Rem. 5456 0.25 0.40 O.log/ 0.50-1.0 4.7-5.5 0.05-0.20 0.25g/ 0.20g/ 0.05 0.15 Rem. II 7039 0.30 0.40 O.log/
21、 0.10-0.40 2.3-3.3 0.15-0.25 3.5-4.5 O.log/ 0.05 0.15 Rem. 2219 0.20 0.30 5.8-6.8 0.20-0.40 O.O2g/ - o.log/ 0.02-0.10 y 0.15 Rem. - a /Maximum - b/ Zirconium O. 1010.25 Vanadium O. 05-0.15 Others each 0.05 max. 3.3 Mechanical properties. Unless otherwise specified (see 6.21, the mechanical propertie
22、s of class I and class II extrusions shall meet the requirements of table II, when tested in accordance with 4.6.2. a/ TABLE 11. Mechanical properties .- Yield Tensile strength Direction of Thickness, strength 0.2% offset Elongation Class specimen inches min. psi min. psi min. percent I Longitudinal
23、 Up to 2.000, incl 45,000 35,000 9 II Longitudinal Up to 2.000, incl 57,000 48,000 8 - a/ See 6.5 and 6.6 3.4 Ballistic requirements. Each ballistic test extrusion shall be proof fired for resistance to penetration by determining a protection ballistic limit, BL(P), at O“ obliquity. The minimum requ
24、ired ballistic limit for class I materials shall be determined from the values shown in tables A-I, A-II and A-III. The minimum required ballistic limit for class II materials shall be determined from the values shown in tables A-IV, A-V, A-VI and A-VII. 3 Provided by IHSNot for ResaleNo reproductio
25、n or networking permitted without license from IHS-,-,-MIL-DTL-4b083D 999990b 2074374 TO2 D MIL-DTL-46083D (M) 3.5 Thermal processing (class 1 only). After acceptance testing, any thermal processing exceeding 250F (121OC) performed on the extrusion excluding fabrication by welding, will necessitate
26、revivification for conformance to 3.3 and 3.4. Deviation from this requirement shall be subject to review and approval by the procuring activity. 3.6 Dimensions. Dimensions shall be as shown in the drawing specified in the invitation for bids, contract or order (see 6.2). 3.6.1 Tolerances. Unless ot
27、herwise specified in the contract or order (see 6.2), the extrusions submitted for acceptance shall not vary from the specified dimensions shown in ANSI H35.2. 3.7 Marking for identification. Each extrusion shall be marked in at least one location in characters not less than 3/8 inch high with the f
28、ollowing information. Impression stamping shall not be used, except in areas designated by the drawing (see 6.2). a. Manufacturers name, trademark or both. b. Number of this specification. c. Class and alloy designation. d. Part or drawing number. e. Lot number. 3.7.1 Ballistic test extrusions. Ball
29、istic test extrusions for first article and acceptance plates shall be marked with the information in 3.7. In addition, first article extrusions shall be marked “PRE“ and acceptance test extrusions marked “ACC“. This marking shall be impression stamped in at least two opposing locations in letters n
30、ot less than 1/2-inch high. 3.8 Ballistic test extrusion information. A properly executed armor data report shall be submitted containing the information as specified in MIL-STD-662. 3.9 Workmanship. Extruded shapes shall be clean, smooth, uniform in quality as well as free from buckles, blisters, h
31、ard spots, damaged ends, laminations and other defects which may affect their use in fabrication within the limits of good commercial practices. 3.9.1 Surface and edge condition. Surface cracks, edge cracks or edge laminations shall be cause for rejection. 4. VERIFICATION 4.1 Clarification of inspec
32、tions. The inspection requirements specified herein are classified as conformance inspection (see 4.2) 4.2 Conformance inspection. Test for acceptance of individual lots consist of testing all requirements specified in section 3. Verification conformance inspection is in accordance with the provisio
33、ns herein. Ballistic tests shall be performed at a government test activity selected by the procuring activity (see 6.2). 4.3 Classification of inspection. Inspection shall be classified as follows: a. First article inspection (see 4.3.1). b. Conformance (acceptance) inspection (see 4.3.2). 4 Provid
34、ed by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIt-DTL-4b083D 999990b 207V375 949 m MIL-DTL-4 6083D (MR) 4.3.1 First article inspection. First article inspection shall consist of the following: a. b. d. e. f. 4.3.2 cons ist C. a. b. d. e. f. g- C. Chemica
35、l analysis (see 3.2 and 4.7.1). Mechanical properties (see 3.3 and 4.7.2). Ballistic tests (see 3.4 and 4.7.3). Dimensions (see 3.6 and 4.6.2). Identification marking (see 3.7, 3.7.1 and 4.6.1). Workmanship (see 3.9 and 4.6.1). Conformance (acceptance) inspection. Lot acceptance inspection shall of
36、the following: Chemical analysis (see 3.2 and 4.7.1). Mechanical properties (see 3.3 and 4.7.2). Ballistic tests (see 3.4 and 4.7.3). Dimensions (see 3.6 and 4.6.2). Identification marking (see 3.7, 3.7.1 and 4.6.1) Workmanship (see 3.9 and 4.6.1). Preparation for shipment (see section 5). 4.4 - Lot
37、. A lot shall consist of finished extrusions, of the same class, shape, dimensions, alloy and temper, which are submitted for inspection as a unit, at essentially the same time and have a total weight of 25,000 pounds or less. 4.5 Samplinq. 4.5.1 First article testing. a. Chemical composition. Sampl
38、es for chemical analyses shall be removed from each extrusion selected for ballistic test. A certification of the chemical composition of the alloy shall be furnished with the t-est extrusions. b. Mechanical properties. One tension test specimen for first article shall be removed from each extrusion
39、 that has been selected for ballistic test. Location and type of specimen shall be as specified in 4.7.2. c. for performance of the ballistic test shall be submitted for each designated thickness and extruded shape shown on the drawing and which the manufacturer has under contract. Because of the va
40、riety of possible shapes and sizes, the manufacturer must contact the ballistic test agency to determine the minimum number needed to satisfactorily conduct the ballistic tests. Ballistic tests. At least two extruded samples having sufficient area 4.5.2 AcceDtance lots. a. Chemical composition, ingo
41、t analysis. At least one sample shall be taken from the molten metal representing the ingots poured from the same source of molten metal. Complete ingot analysis records shall be available to the Government at the producers facility. b. Chemical composition, finished product analysis. When sampling
42、has not been made in accordance with 4.5.2 a., one sample shall be randomly taken for each 4,000 pounds (or less) of every lot in accordance with ASTM E716 or ASTM E34. c. Mechanical properties. Unless otherwise specified (see 6.2) from material having a nominal weight of less than one pound per lin
43、eal foot, one tension test sample shall be selected from each inspection lot weighing 1,000 pounds or less; from inspection lots weighing moxe than 1,000 pounds, one 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-46083D 9999906 2074376 885
44、 D MIL-DTL-4 60830 (MR) additional sample shall be taken for each 1,000 pounds or fraction tereof in excess of the first 1,000 pounds. From material having a nominal weight of one pound or more per lineal foot, one tension-test sample shall be taken from each inspection lot consisting of 1,000 feet,
45、 or less; from inspection lots consisting of more that 1,000 feet, one additional sample shall be taken from each 1,000 feet or fraction thereof in excess of the first 1,000 feet. Only one tension-test specimen shall be taken from any one piece when more that one piece is available. d. Ballistic tes
46、ts. Because of the variety of possible shapes and sizes the manufacturer must contact the ballistic test agency to determine the minimum number of extrusions per lot which are needed to conduct the ballistic test (s) . 4.6 Examination. 4.6.1 Visual. Each extrusion shall be examined to determine comp
47、liance with the identification marking (see 3.7) and workmanship (see 3.9) requirements. 4.6.2 Dimensional. One extrusion from each lot (see 4.4) shall be measured to determine compliance with the requirements for dimensions and tolerances (see 3.6 and 3.6.1). 4.6.3 Preparation for shipment. Prior t
48、o shipment, examination shall be made to determine compliance with section 5. 4.7 Tests. 4.7.1 Chemical composition. Chemical analysis shall be conducted in accordance with ASTM methods E34, E227, E607, or E1251. 4.7.2 Mechanical properties. Tension test specimens shall be prepared and tested in acc
49、ordance with ASTM B557. The specimens shall be taken from the extruded shape in the longitudinal direction. From shapes of nominal thickness of 0.75 to 1.50 inches, inclusive, tension test specimens shall be taken with the axis midway between the extruded surfaces; from shapes of nominal thickness greater than 1.50 inches, the axis of the test specimen shall be three-fourths of the distance from one surface to the other. 4.7.3 Ballistic testing. Ballistic testing shall be in
