ARMY MIL-DTL-32333 A-2009 ARMOR PLATE MAGNESIUM ALLOY AZ31B APPLIQUE《AZ31B型镁合金贴花船甲板》.pdf

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1、 INCH-POUNDMIL-DTL-32333 (MR) 29 July 2009 DETAIL SPECIFICATION ARMOR PLATE, MAGNESIUM ALLOY, AZ31B, APPLIQUE This specification is approved for use by the Department of the Army and is available for use by all Departments and Agencies of the Department of Defense 1. SCOPE 1.1 Scope. This specificat

2、ion covers wrought magnesium alloy armor plate in nominal thicknesses from 0.250 to 3.000 inch, inclusive (see 6.2). 1.2 Classification. The wrought magnesium alloy armor should be of the following class as specified (see 6.2). 1.2.1 Class 1. Wrought magnesium AZ31B alloy armor that has been cold ro

3、lled and partially annealed (H24 condition). 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional infor

4、mation or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of this specification, whether or not they are listed. Comments, suggestions, or ques

5、tions on this document should be addressed to: Director, U.S. Army Research Laboratory, Weapons and Materials Research Directorate, Materials Application Branch, Specifications and Standards Office, Attn: RDRL-WMM-C, Aberdeen Proving Ground, MD 21005-5069 or emailed to rsquillaarl.army.mil. Since co

6、ntact information can change, you may want to verify the currency of this address information using the ASSIST Online database at http:/assist.daps.dla.mil/. AMSC N/A FSC 9535 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproducti

7、on or networking permitted without license from IHS-,-,-MIL-DTL-32333 (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 (see 6.2

8、), the issues of these documents are those cited in the solicitation or contract. DEPARTMENT OF DEFENSE STANDARDS MIL-STD-129 - Military Marking for Shipment and Storage (Copies of these documents are available online at http:/assist.daps.dla.mil/quicksearch/ or http:/assist.daps.dla.mil/ or from th

9、e Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, 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 indicated (see 6.2), the issue in effect on the date of in

10、vitation for bids or request for proposal should apply. ASTM INTERNATIONAL ASTM B90/B90M - Standard Specification for Magnesium-Alloy Sheet and Plate (DoD Adopted) ASTM B117 - Standard Practice for Operating Salt Spray (Fog) Apparatus (DoD Adopted) ASTM B557 - Standard Test Method of Tension Testing

11、 Wrought and Cast Aluminum- and Magnesium-Alloy Products (DoD Adopted) ASTM B954 - Standard Test Method for Analysis of Magnesium and Magnesium Alloys by Atomic Emission Spectrometry ASTM G97 - Standard Test Method for Laboratory Evaluation of Magnesium Sacrificial Anode Test Specimens for Undergrou

12、nd Applications. (Copies of these documents are available from www.astm.org or ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959.) 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this doc

13、ument 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

14、), first article testing shall be required and all test samples required by this specification shall be made available to the contracting officer or his authorized representative for approval in 2Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DT

15、L-32333 (MR) accordance with 4.3. The contractor shall comply with this requirement at the time of his first order or contract and at any time that the supplier has not furnished the same class of magnesium armor in the applicable thickness range under this specification within a period of 18 months

16、. First article testing shall be completed before production material is submitted for acceptance testing. The approval of the first article samples authorizes commencement of production but does not relieve the supplier of the responsibility to comply with all the applicable provisions of this spec

17、ification. The first article samples and acceptance test plates shall be manufactured by the process proposed for use on production items. 3.2 Chemical composition. The chemical composition (product analysis) of the plates shall be determined in accordance with ASTM B954 and shall be within the limi

18、ts specified in Table I. A certification of conformance of the chemical composition of the alloy shall be furnished with the ballistic test plates. TABLE I. Chemical composition (product analysis), weight percent. 1/ AZ31B ALLOY 2/ELEMENTS Maximum Minimum Aluminum (Al) 3.5 2.5 Zinc (Zn) 1.3 0.7 Mang

19、anese (Mn) 1.0 0.20 Silicon (Si) 0.05 - Copper (Cu) 0.002 - Calcium (Ca) 0.04 - Iron (Fe) 0.004 - Nickel (Ni) 0.002 - Other, max. Each 3/0.10 - Other, max. Total 3/ 0.30 - Magnesium (Mg) Remainder 1/Except for “Magnesium” and “others”, analysis normally is made for elements for which specific limits

20、 are shown. 2/Where single units are shown, these indicate the maximum amounts permitted. 3/The sum of those “other” metallic elements which are not listed in the Table, but are intentionally added, shall be reported and expressed to the second decimal before determining the sum. 3.3 Corrosion resis

21、tance. Magnesium tested as specified in accordance with 4.7.2 shall suffer not more than 7.5 mpy. 3.4 Mechanical properties. Unless otherwise specified in the contract or order (see 6.2), the mechanical properties of the test specimen shall meet the minimum mechanical properties listed in Table II a

22、s determined in accordance with ASTM B90/B90M and ASTM B557. 3.4.1 Tensile specimens. Tensile specimens shall be taken parallel to the direction of rolling. 3Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32333 (MR) 3.5 Compressive propertie

23、s. If specified in the contract or order (see 6.2), compressive properties shall meet the minimum requirements specified in Table III (see 4.7.4). TABLE II. Minimum mechanical properties.Thickness, inches Ultimate Tensile Strength, Ksi Total Yield Strength, 0.2% Offset, Ksi Elongation in 2 Inches or

24、 4D, percent 0.250 to 0.374, incl. 38.0 26.0 8 0.375 to 0.500, incl. 37.0 24.0 8 0.501 to 1.000, incl. 36.0 22.0 8 1.001 to 2.000, incl. 34.0 20.0 8 2.001 to 3.000, incl. 34.0 18.0 8 TABLE III. Minimum compressive properties.Thickness, inches Compressive Yield Strength at 0.2% Offset, Ksi, minimum 0

25、.250 to 0.374, incl. 20.0 0.375 to 0.500, incl. 16.0 0.501 to 1.000, incl. 13.0 1.001 to 2.000, incl. 10.0 2.001 to 3.000, incl. 9.0 3.6 Ballistic limit. The protection ballistic limit, BL(P), shall be as specified in Appendix A. 3.7 Dimensions. Unless otherwise specified in the contract or order (s

26、ee 6.2), dimensional tolerances shall be as specified by ASTM B90/B90M. 3.7.1 Tolerances. Unless otherwise specified in the contract or order (see 6.2), delivered plates shall meet all the dimensional tolerances as specified by ASTM B90/B90M. 3.8 Marking for identification. Unless otherwise specifie

27、d in the contract or purchase order (see 6.2), each plate shall be marked in accordance with MIL-STD-129. 3.8.1 Ballistic test plates. In addition to the markings in 3.8, each ballistic test plate shall be marked with the letters PRE for First Article test plates and ACC for Acceptance test plates.

28、This marking shall be impression stamped on the edge in letters 3/8 inch high or greater. Ballistic retest plates shall be marked “R1“ and “R2“ respectively (see A.5.2). 3.9 Ballistic test plate information. For each lot of magnesium alloy armor a properly completed Magnesium Armor Test Data Form (S

29、ee Figure 1) shall be submitted with each ballistic test plate that represents that particular processing lot. 4Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32333 (MR) REQUEST FOR BALLISTIC TEST OF MAGNESIUM ARMOR FIRING RECORD: DATE: Plat

30、e MANUFACTURER / PRODUCER: PRIME CONTRACTOR: Name: Name: Address: Address: POC: POC: Phone No: Phone No: Fax No: Fax No: SPECIFICATION: MIL-DTL-XXXX (MR) REVISION: AMENDMENT: CONTRACT NO: TECOM PROJECT NO: DCAS REGION: BALLISTIC TEST CONTRACT NO: TEST ITEM IDENTIFICATION: Lot No. Plate No. Ordered T

31、hickness Alloy and Temper AZ31B H24 PURPOSE: _ Acceptance _ First Article _ Development SAMPLE: _ Primary _ Retest (Firing Record No. of Failed Sample_) CHEMICAL ANALYSIS: Al Zn Mn Si Cu Ca Fe Ni Other Elements Mg (Rem)MECHANICAL PROPERTIES: UTS (ksi): 0.2% YS (ksi): Elongation (%): BALLISTIC TEST R

32、ESULTS: Test Projectile Notes Obl. (deg) Actual Thickness (in)RequiredV50 (fps)Actual V50 (fps)Pass/ Fail LOTS REPRESENTED BY: Reduced Testing Audit Testing Lot met failed to meet the ballistic requirements of specification MIL-DTL-32333 (MR). Government Representative Date Supplier Representative D

33、ate FIGURE 1. Magnesium Armor Test Data Form 5Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32333 (MR) 3.10 Workmanship. Plate produced under this specification shall be uniform in quality and clean, smooth and sufficiently free from buckle

34、s, blisters, hard spots, damaged ends, laminations and other defects which may affect its use. 4. VERIFICATION 4.1 Classification of inspection. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.3). b. Conformance inspection (see 4.4). 4.2 Lot

35、. A lot shall consist of all plate of the same alloy and ordered thickness which has been processed together by the same mill practice. Unless otherwise specified in the contract or purchase order (see 6.2), the weight of the finished plates in a lot shall not exceed 30,000 pounds and shall be submi

36、tted for inspection as a unit. 4.3 First article inspection. First article inspection, except as otherwise indicated in this specification, shall utilize the same requirements and test methods as the production acceptance inspection shown in 4.4. 4.4 Conformance inspection. Conformance inspection or

37、 production acceptance inspection shall include the examination of 4.6 and the tests of 4.7. 4.5 Sampling. 4.5.1 First article inspection. 4.5.1.1 Chemical composition. One (1) sample for chemical analysis shall be removed from each plate selected for ballistic testing and shall meet the requirement

38、s of 3.2 when tested as specified in 4.7.1. 4.5.1.2 Corrosion. Three (3) test coupons shall be machined to nominal dimensions of 2.0” X 3.0” X 0.25”. All flat surfaces shall be sanded to a uniform 600 grit surface finish. 4.5.1.3 Mechanical properties. One tension test specimen shall be removed from

39、 each plate that has been selected for ballistic testing and shall meet the requirements when tested as specified in 4.7.3. 4.5.1.4 Compressive properties. One compressive test specimen shall be removed according to 3.4 from each plate that has been selected for ballistic testing and shall meet the

40、requirements when tested as specified in 4.7.4. 4.5.1.5 Ballistic tests. Two plates, one from the tail and one from the nose, 12 inches by 36 inches of each thickness to be supplied on the contract, shall be submitted for ballistic testing in accordance with Appendix A. The orientation of these plat

41、es with respect to the rolling direction shall be noted on the plate. 6Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32333 (MR) 4.5.2 Conformance inspection. 4.5.2.1 Chemical composition. One (1) sample for chemical analysis shall be remove

42、d from each plate selected for ballistic testing and shall meet the requirements of 3.2 when tested as specified in 4.7.1. 4.5.2.2 Mechanical properties. Samples for tension tests shall be selected in accordance with ASTM B90/B90M. 4.5.2.3 Compressive properties. There is no requirement for compress

43、ive testing for conformance inspection (production acceptance). 4.5.2.4 Ballistic testing. One plate, 12 inches by 36 inches, shall be randomly selected from each lot for ballistic testing. The orientation of the plate with respect to the rolling direction shall be at the option of the producer (see

44、 6.2). The sample shall meet the requirements when tested as specified in 4.7.4. 4.6 Examination. 4.6.1 Visual. Each plate shall be examined for compliance with the identification marking (see 3.7) and workmanship (see 3.9) requirements. 4.6.2 Dimensions. Plates within a lot shall be measured to det

45、ermine compliance with requirements of paragraph 3.6 in accordance with the sampling procedures approved by the procuring activity (see 6.2). 4.7 Test specimens. 4.7.1 Chemical composition. Samples for chemical analysis shall be prepared and tested in accordance with ASTM B954. 4.7.2 Corrosion testi

46、ng. Coupons as specified in 4.5.1.2 shall be weighed and exposed to 168 hours of salt fog per ASTM B 117. Coupons shall be cleaned using the solution and procedure contained in ASTM G 97. Coupons shall be reweighed. Mass loss shall be calculated using the formula below and the average of the three c

47、oupons shall meet the requirements of 3.3. mpy = K*(mi-mf)/(A*T*d) where K=constant (546,000 for mpy) mi=initial mass (g) mf=finial mass (g) A=area (in2) T=time (hours) d=density (g/cm2) 7Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32333

48、(MR) 4.7.3 Mechanical properties. Tension test specimens shall be prepared and tested in accordance with ASTM B557. 4.7.4 Compressive properties. Compressive test specimens shall be prepared and tested in accordance with the instructions specified in the contract or purchase order (see 6.2). Specime

49、ns shall be taken in the short transverse direction (through the thickness) (see 3.5). 4.7.5 Ballistic testing. The ordered thickness specified in the contract shall be used to determine the test projectile in accordance with Table IV. Ballistic testing shall be in accordance with Appendix A. Test plate thickness