1、MIL-DTL-4bLLBE 999990b 20b9073 T8L I NOT MEASUREMENT SENSITIVE I 26 August 1998 SUPERSEDING MIL-A- 4 6 11 8 D (MR) 3 May 1989 DETAIL SPECIFICATION ALUMINUM ALLOY ARMOR, 2219, ROLLED PLATE AND DIE FORGED SHAPES This specification is approved for use by all Departments and Agencies of the Department o
2、f Defense. 1. SCOPE 1.1 Scope. This specification covers aluminum alloy 2219 armor rolled plate and die forged shapes from 314 inch up to and including 4 inches in thickness. 1.2 Weldability. Alloy 2219 is weldable to itself and other alloys of the 2000 series, but not to alloys of 5083 type materia
3、ls and aluminum-zinc- magnesium series by present welding techniques. 1.3 Classification. Material furnished under this specification should be one of the following types and tempers: Rolled plate - T851 Die forged shapes - T852 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this secti
4、on are specified 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 been made to ensure the completeness of this list, document users are cautioned
5、 that they must meet all specified requirements documents cited in sections 3 and 4 of this specification, whether or not they are listed. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Directo
6、r, US Army Research Laboratory, Weapons and Materials Research Directorate, ATTN: AMSRL-WM-M, Aberdeen 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 FSC 9535 Licensed by Information
7、 Handling ServicesMIL-DTL-4bLLBE W 9999906 2069074 9LB MIL-DTL-46118E (MR) 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the iss
8、ues 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). STANDARDS DEPARTMENT OF DEFENSE MIL-STD-662 - VW Ballistic Test for Armor (Unless otherwise indicated, copies
9、of federal and military specifications, standards, and handbooks are available from the Defense Automated Printing Service (DAPS), Bldg. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094). 2.2 Non-Government publications. The following documents form a part of this specification to the extent spec
10、ified 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 solicitation. Unless otherwise specified, the issues of documents not listed in the DoDISS are the issues of the documents cited in the solicitation (s
11、ee 6.2). SOCIETY OF AUTOMOTIVE ENGINEERS, Inc. (SAE) AMs 2750 - Pyrometry (DoD adopted) AMs 2772 - Heat Treatment of Aluminum Alloy Raw Materials (Application for copies should be addressed to the Society of Automotive Engineers, Inc., 400 Commonwealth Drive, Warrendale, PA 15096-0001). AMERICAN NAT
12、IONAL STANDARDS INSTITUTE (ANSI) ANSI H35.2 - Dimensional Tolerances for Aluminum Mill Products (DoD adopted) (Application for copies should be addressed to the American National Standards Institute, ATTN: Customer Service, 11 West 42nd Street, New York, NY 10036). AMERICAN SOCIETY FOR TESTING AND M
13、ATERIALS (ASTM) ASTM B557 - ASTM E34 - ASTM E227 - ASTM E607 - ASTM E716 - ASTM E1251 - Tension Testing Wrought and Cast Aluminum and Magnesium-Alloy Products (DoD adopted) Chemical Analysis of Aluminum and Aluminum-Base Alloys (DoD adopted) Optical Emission Spectrometric Analysis of Aluminum and Al
14、uminum Alloys by the Point-to Plane-Technique (DoD adopted) Optical Emission Spectrometric Analysis of Aluminum and Aluminum Alloys by the Point-to-Plane Technique, Nitrogen Atmosphere (DoD adopted) Sampling Aluminum and Aluminum Alloys for Spectrochemical Analysis Optical Emission Spectrometric Ana
15、lysis of Aluminum and Aluminum Alloys by the Argon Atmosphere, Point-to-Plane, Unipolar Self-Initiating Capacitor Discharge (DoD adopted) 2 Licensed by Information Handling ServicesflIL-DTL-4bLLAE 9999906 2069075 854 m MIL-DTL-46118E (MR) ASTM 647 - Determining Susceptibility to Stress-Corrosion Cra
16、cking of High Strength Aluminum Alloy Products ( DoD adopted) (Application for copies should be addressed to the American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959). 2.3 Order of precedence. In the event of a conflict between the text of this document
17、 and the references cited herein, the text of this document takes precedence. Nothing in this document, 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
18、 before production has commenced, samples of the specified item shall be made available to the contracting officer or his authorized representative for approval in accordance with 4.3.1. The approval of the first article samples authorizes the commencement of production but does not relieve the supp
19、lier of responsibility for compliance with all applicable provisions of this specification. The first article samples and test forgings shall be manufactured by the process proposed for use on production. 3.2- Chemical composition. Chemical composition of material furnished under this specification
20、shall be within the limits specified in table I. .L/ TABLE I. Chemical composition, percent (ladle analysis).- El emen t Min. Max. 0.20 Silicon - Iron Copper Manganese Magnesium Zinc Titanium Zirconium Vanadium Others, each Others, total Aluminum, by difference - 5.8 0.20 o. 02 o. 10 0.05 0.30 6.8 0
21、.40 0.02 0.10 0.10 0.25 0.15 0.05 0.15 Rema i nde r namely, forging thickness, impact area and projectile type. The number of forgings, or forging sections needed for first article ballistic acceptance testing will be determined. Modifications, cutting, welding and bracketing will be determined as n
22、eeded for test mounting. 4.5.2 For acceDtance tests. 4.5.2.1 (a) 4.5.2.2 (a) Chemical composition. For ladle analysis. from the molten metal representing one group of ingots poured as a unit from the same source of molten metal. Complete ingot analysis records shall be available to the Government at
23、 the ingot producers facility. For check analysis. When sampling has not been made in accordance with 4.5.2.1(a), one sample shall be taken for each 4,QOO pounds or less in each lot in accordance with applicable methods specified in ASTM E34 or ASTM 716. At least one sample shall be taken Mechanical
24、 properties. Rolled plate. From each lot samples for tension tests shall be selected in accordance with table IV. selected from a different plate in the lot. Should a lot consist of only one plate, only one tension test sample shall be taken. One tension test specimen shall be made from each sample.
25、 Each sample shall be 7 Licensed by Information Handling ServicesMIL-DTL-4bLLBE 999990b 20b9080 11% * MIL-DTL-46118E (MR) . (b) Forged shapes. One forging for tension test shall be selected from each lot. One longitudinal and one transverse tension test specimen shall be removed from the forging. If
26、 size permits, this may be the same forging that is used for ballistic testing. TABLE IV. Number of tension test samples. Minimum number Lot size, pounds of samples To 8,000, incl. 8,001-12,000, incl. 12,001-20,000, incl. Over 20,000, incl. Stress corrosion tests (for surveillance testing only). Rol
27、led plate. One plate, approximately 12 inches by 12 inches by the thickness (in inches) representing the lot, shall be selected for stress corrosion tests. At the discretion of the procuring activity, reduced sampling may be instituted (not every lot need be sampled). Forged shapes. One or more forg
28、ed shapes (enough to provide the prescribed number of specimens) shall be selected for stress corrosion tests. Reduced sampling shall be at the discretion of the procuring activity. Ballistic testing. Rolled plate. the thickness representing the lot shall be selected for ballistic testing. The orien
29、tation of this plate with respect to the rolling direction shall be at the option of the manufacturer. Forged shapes. From each lot, one forging shall be submitted for ballistic testing. (See 4.5.1.4b for minimal area requirements.) One plate approximately 12 inches by 36 inches by 4.6 Test specimen
30、s. 4.6.1 Chemical analysis. Samples for chemical analysis shall be prepared in accordance with the applicable methods specified in ASTM E34 or ASTM 716. 4.6.2 Mechanical properties. (a) Rolled plate. Tension test specimens shall conform to the dimensions of the 0.500 inch diameter round specimen of
31、ASTM B557. be taken in the long transverse direction. From plate in nominal thickness 0.75 to 1.50 inches inclusive, tension test specimens shall be taken with the axis midway between the two plate surfaces; from plate in nominal thickness greater than 1.50 inches, the axis of the tension test speci
32、men shall be three-fourths of the distance from one surface to the other (see 6.2). (b) Forged shapes. Tension test specimens shall conform to the They shall dimensions of the 0.500 inch diameter round specimen of ASTM B557. forging dimensions prevent the use of the 0.500 inch diameter specimen, the
33、 If the 8 Licensed by Information Handling Services flIL-DTL-46338E 9999906 2069083 058 MIL-DTL-46118E (MR) largest of the round subsize proportional specimens shown in ASTM B557 which can be obtained shall be used. Longitudinal tension test specimens shall be taken with the long axis parallel to th
34、e Transverse specimens shall be taken with direction of maximum metal flow. Actual drawing or in the contract or order (see 4.6.3 Stress corrosion. The stress at 75% of the specified yield strength. direction of maximum metal flow. the long axis perpendicular to the location shall be as specified on
35、 the 6.2). corrosion specimens shall be stressed 4.7 Test procedures. 4.7.1 Chemical analysis. Chemical analysis shall be conducted in accordance with the applicable methods specified in ASTM E34 or E227, E607, or E1251 of ASTM E716. The analysis shall comply with the declared composition establishe
36、d in accordance with the requirements of table I (see 3.2). 4.7.2 Mechanical properties. The mechanical properties shall be determined in accordance with ASTM B557. 4.7.3 Capability requirements for resistance to stress corrosion. When stress corrosion testing is specified, the test shall be conduct
37、ed in accordance with ASTM 647. forgings shall be specified in the forging drawing. The location of the specimens taken from die 4.7.4 Ballistic tests. (al Rolled plate. Prior to testing, the plates shall be temperature conditioned (see Appendix A, A.4.2). Plates shall be tested using projectiles ch
38、osen in accordance with the thickness ranges shown in table V. Plate thickness as determined by the ballistic test agency shall be used to determine the required ballistic limit for that plate. Individual thickness measurements are to be read from a deep throat micrometer or by means of an ultrasoni
39、c device to the nearest 0.001 inch and the average of these readings reported to the nearest 0.005 inch. Measurements shall be made on the intended impact area. TABLE V. Acceptance ballistic test plates or forgings. Ordered or nominal design thickness specified on Projectile drawings, inches to be u
40、sed O. 700-0.950 O. 951-1.550 1.551-3.000 3.001-4.000 Cal. -50 FS 20 mm FS Cal. .50 AP, M2 14.5 mm API, BS41 (b) Forged shapes. Prior to testing, the forgings shall be temperature conditioned (see Appendix A, A.4.2). Ballistic test forgings shall be tested at locations specified (see 6.2). Forgings
41、shall be tested using projectiles chosen in accordance with thickness ranges shown in table A-IV. Unless otherwise stated, required minimum ballistic limit protection shall be the measured thickness of the forging. 4.7.5 Forging thickness measurements. The average thickness of the forging shall be t
42、he mean of at least 4 thickness measurements read to the 9 Licensed by Information Handling ServicesMIL-DTL-46118E (MR) nearest 0.01 inch. These measurements shall be made in regions of uniform thickness as close as possible to the intended point of impact of projectiles within the area required to
43、provide ballistic protection as shown on the drawing. 4.8 Examination. 4.8.1 Dimensions. 4.8.1.1 Rolled plate. Plates within the lot shall be measured to determine compliance with the requirements for dimensions and tolerances (see 3.7) in accordance with sampling procedures approved by the procurin
44、g activity. 4.8.1.2 Forged shapes. From each acceptance lot, representative forgings shall be selected in accordance with table VI and examined to determine compliance with the requirements of 3.7. TABLE VI. Sampling for dimensional examination. Number of forgings in the lot Number of sample forging
45、s Up to 50, incl. 51 to 130, incl. 131 to 300, incl. 5 10 15 4.8.2 Visual. Each plate or forging shall be examined to determine compliance with the identification marking (see 3.8) and workmanship (see 3.10) requirements. 4.8.3 Preparation for shipment. Prior to shipment, examination shall be made t
46、o determine compliance with section 5. 4.9 Rejection and retest. 4.9.1 Rejection. Unless otherwise specified in the contract or order (see 6.21, failure of the first article test plates or forgings to meet the requirements of 4.3.1 shall be cause for rejection of the process, failure of the acceptan
47、ce samples to meet the requirements of 4.8 shall be cause for rejection of the lot (see 4.9.2). 4.9.2 Retest. Unless specific retest procedure is specified in the contract or order (see 6.21, samples shall be submitted for each failed sample in accordance with paragraphs 4.10.1, 4.10.2 or 4.10.3. Fa
48、ilure of either of the retest samples (plates) shall be cause for rejection of the material. First article retests shall not be permitted until the supplier has made the necessary corrections in the processing of the material to the satisfaction of the procuring activity. Samples submitted for retes
49、t shall be marked R1, R2 and R3, if applicable, in addition to the requirements of 3.8. 4.10 AcceDtance. 4.10.1 Stress corrosion (first article) testing only. If the manufacturer so desires, a retest shall be performed using three additional specimens. No cracking shall occur in 10 days. If the retest also fails, the manufacturer may elect to resubmit the lot after retreatment of the entire lot. After retreatment, the lot must conform to the requirements outlined in 4.7.3. 10 Licensed by Information Handling ServicesMIL-DTL-4bLLBE = 9999906 2069083 920 m MIL-DTL-46118E (MR) 4.10.2 Bal
