1、 INCH-POUND MIL-DTL-32332 (MR) 24 July 2009 _ DETAIL SPECIFICATION ARMOR PLATE, STEEL, WROUGHT, ULTRA-HIGH-HARDNESS 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 spec
2、ification covers quenched or quenched and tempered ultra-high-hardness (UHA) wrought steel armor plate for lightweight armor applications for ordered thicknesses from 0.118 inches (3 mm) up to an ordered thickness of 0.630 inches (16 mm), inclusive (see 6.1, 6.2, and 6.3). Although the major intent
3、of UHA is an armor appliqu, UHA could be utilized as a welded structural plate if welded by special techniques. 1.2 Classification. Wrought armor should be of the following classes as specified (see 6.2). 1.2.1 Class 1. Wrought armor plate with an ordered thickness of 0.118 (3 mm) to 0.630 inches (1
4、6 mm) which is designed for better resistance to penetration than MIL-DTL-46100 (see 6.1.1). 1.2.2 Class 2. Wrought armor plate with an ordered thickness of 0.118 (3 mm) to 0.630 inches (16 mm) which is designed for better resistance to penetration than Class 1 (see 6.1.2). Comments, suggestions, or
5、 questions on this document should be addressed to: Director, U.S. Army Research Laboratory, Weapons and Materials Research Directorate, Materials Applications Branch, Attn: RDRL-WMM-C, Aberdeen Proving Ground, MD 21005-5069 or emailed to rsquillaarl.army.mil. Since contact information can change, y
6、ou 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 9515 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted with
7、out license from IHS-,-,-MIL-DTL-32332 (MR) 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 inform
8、ation 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. 2.2 Government documents. 2.2.1
9、 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), the issues of these documents are those cited in the solicitation or contract. DEPARTMENT OF DEFENSE ST
10、ANDARDS 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 the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.2.
11、2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified (see 6.2), the issues of these documents are those cited in the solicitation or contr
12、act. USADTC TOP 2-2-710 - Ballistic Tests of Armor Materials ITOP 2-2-713 - Ballistic Testing of Armor (Application for copies is available online at http:/www.dtic.mil/ or from the Defense Technical Information Center, 8725 John J. Kingman Road, Suite 0944, Fort Belvoir, VA 22060-6218.) 2.3 Non-Gov
13、ernment publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified (see 6.2), the issues of these documents are those cited in the solicitation or contract. AMERICAN SOCIETY OF NONDESTRUCTIVE TESTING ANSI/ASNT CP-189-2006 - ASNT Stan
14、dard for Qualification and Certification of Nondestructive Testing Personnel (Copies of ANSI/ASNT publications are available from http:/ www.asnt.org/shop/ or from the American Society for Nondestructive Testing, P.O. Box 28518, 1711 Arlingate Lane, Columbus, OH 43228-0518) 2 Provided by IHSNot for
15、ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32332 (MR) ASTM INTERNATIONAL ASTM A6/A6M - Standard Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes and Sheet Piling (DoD adopted) ASTM A370 - Standard Test Methods and Definit
16、ions for Mechanical Testing of Steel Products (DoD adopted) ASTM A578/ A578M - Standard Specification for Straight-Beam Ultrasonic Examination of Rolled Steel Plates for Special Applications (DoD adopted) ASTM A751 - Standard Test Methods, Practices, and Terminology for Chemical Analysis of Steel Pr
17、oducts (DoD adopted) ASTM E10 - Standard Test Method for Brinell Hardness of Metallic Materials (DoD adopted) ASTM E23 - Standard Test Methods for Notched Bar ImpactTesting of Metallic Materials (DoD adopted) ASTM E110 - Standard Test Method for Indentation Hardness of Metallic Materials by Portable
18、 Hardness Testers (DoD adopted) (Copies of these documents are available from www.astm.org or ASTM International, 100 Barr Harbor Drive, P.O. 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
19、 text of this document and the references cited herein (except for related specification sheets), 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
20、. When specified in the contract or purchase order (see 6.2, 6.4, and 6.9), a sample or samples of the specified item shall be made available to the contracting officer or his authorized representative for approval in accordance with 4.4. The contractor shall comply with this requirement at the time
21、 of his first order or contract and at any time that the supplier has not furnished the same class of ultra high hard armor in the applicable thickness range under this specification within a period of 37 months. The approval of the first article samples authorizes the commencement of shipment but d
22、oes not relieve the supplier of responsibility for compliance with all applicable provisions of this specification, namely conformance or production acceptance. The first article samples and test plates shall be manufactured by the process proposed for use on production armor. The manufacturers decl
23、ared chemical analysis shall be submitted to the contracting agency (or purchasing activity) and to the ballistic test agency. The ballistic test agency shall record the first article ballistic test plates submitted, 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without lice
24、nse from IHS-,-,-MIL-DTL-32332 (MR) showing the dates tested. Requests from the procuring activity to the ballistic test agency as to prior conformance with first article tests shall be accompanied by copies of the first article test firing records. Any deviation(s) noticed by the ballistic agency s
25、hall be brought to the attention of the contracting activity and to the manufacturer. 3.1.1 First time producer. First time producers wishing to qualify to this specification shall follow the instructions of 6.7. 3.2 Production acceptance. 3.2.1 Chemical composition. A declared chemistry shall be su
26、bmitted to the contracting agency or its authorized representative and to the ballistic test agency. The chemical composition of the declared chemistry shall conform to the requirements of Table I, column A, unless otherwise specified in the contract or purchase order (see 6.2). The chemical composi
27、tion shall be determined by a product analysis (values shall be listed as weight percent) in accordance with 4.6.1.1 and 4.8.1. The first article samples and the production test plates shall utilize the same declared chemistry within the allowable ranges proposed for use in production. A statement s
28、howing the heat analysis of each melt and one product analysis of each lot and complete details of the heat treatment of each lot shall be furnished for the files of the purchaser at no cost. All elements of the chemical composition specified in Table I shall be shown in the statement. This statemen
29、t shall be attached to the completed Ultra High Hard Armor Test Data Form (see Figure 1). 3.2.2 Carbon equivalence. Carbon equivalence (CE) shall be calculated for each heat per ASTM A6/A6M, i.e. CE = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15 where the elements are expressed in wt%. There is no limi
30、t to CE for steels in this specification, but it shall be reported on the completed Ultra High Hard Armor Test Data Form (see Figure 1). 3.2.3 Heat treatment. All plates in each lot, including samples, shall receive the same heat treatment except for such variations in tempering temperature as shall
31、 be necessary to produce the prescribed hardness. Unless otherwise specified in the contract or purchase order (see 6.2), local or general heating shall not be performed after the final heat treating operation. This does not include preheating for welding or flame cutting, as long as the tempering t
32、emperature is not exceeded (see 6.6 and 6.11). Tempering temperature shall be reported on Figure 1. 3.2.3.1 Thermal processing. The material shall be able to withstand thermal processing for preheating, stress relieving or similar operations at a maximum temperature of 350 degrees F without affectin
33、g mechanical or ballistic properties. 3.2.4 Condition. Unless otherwise specified in the contract or purchase order (see 6.2), plates shall be in the as-heat treated condition; surfaces shall not be pickled. 3.2.5 Mechanical properties. 4 Provided by IHSNot for ResaleNo reproduction or networking pe
34、rmitted without license from IHS-,-,-MIL-DTL-32332 (MR) 3.2.5.1 Hardness. The surface hardness of each plate, including first article samples, shall be a minimum of HBW 570. The diameters of Brinell hardness impressions on any individual plate shall not vary by more than 0.10 mm (see 4.8.2). TABLE I
35、. Chemical composition and precision (product analysis). 4/ELEMENT COLUMN A MAXIMUM LIMIT for FIRST ARTICLE whichever is less, from any quenched edge as well as outside the heat affected zone of any thermally-cut edge. The largest attainable subsize Charpy V-notch impact specimens shown in Figure 7
36、of ASTM E23 shall be used. There are no Charpy V-notch impact test requirements for plates less than 0.140 inches thick. 4.8.4 Ballistic tests. Ballistic testing of armor plate shall be conducted at a Government approved test facility specified in 4.2.1, unless otherwise specified in the contract or
37、 purchase order (see 6.2). Testing shall be conducted in accordance with the requirements of Appendix A of this specification. 4.8.5 Ultrasonic examination. 12 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32332 (MR) 4.8.5.1 Inspection equi
38、pment. The ultrasonic soundness inspection equipment shall conform to ASTM A578/A578M. 4.8.5.2 Procedure. Unless otherwise specified in the contract or purchase order (see 6.2), the ultrasonic examination shall be carried out in accordance with ASTM A578/A578M (see 3.2.9.2) with the following except
39、ions. (a) Scanning shall be continuous over 100% of the plate surface. (b) Scanning rate shall be at a speed where recordable discontinuities can be detected. (c) The testing frequency shall be a minimum of 2 megahertz (MHz). (d) Any area within a plate where a discontinuity produces a continuous to
40、tal loss of back reflection accompanied by continuous indications on the same plane that cannot be encompassed within a circle whose diameter is 1 inch shall be cause for rejection of that plate. 4.8.5.3 Certification of inspection personnel. Unless otherwise specified in the contract or purchase or
41、der (see 6.2), personnel performing ultrasonic inspection shall comply with the qualification requirements of ANSI/ASNT CP-189-2006. 4.9 Reduced testing. At the discretion of the procuring activity, the amount of testing shall be reduced provided the results on consecutive lots indicate that a satis
42、factory uniform product meeting the testing requirements is being produced and shall be specified in the contract or purchase order (see 6.2). Reduced testing shall be in accordance with a system previously approved or established by the procuring activity involved. 4.10 Rejection and retest for non
43、-ballistic requirements. 4.10.1 Rejection. Unless otherwise specified in the contract or order (see 6.2), failure of the first article samples to meet the requirements of this specification shall be cause for rejection of the process, failure of the acceptance sample to meet the requirements of this
44、 specification shall be cause for rejection of the lot (see 4.10.2). For ballistic rejection procedures, see A.4.1.2. 4.10.2 Retest. Unless specific retest procedure is specified in the contract or order (see 6.2), two retest samples shall be submitted for each failed sample. Failure of either of th
45、e 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. For ballistic retest procedures, see A.4.1.2. 5.
46、 PACKAGING 5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or order (see 6.2). When packaging of materiel is to be performed by DoD or in-house contractor personnel, these personnel need to contact the responsible packaging activity to ascert
47、ain packaging requirements. Packaging requirements are maintained by the Inventory Control Points packaging activities within the Military Service or Defense Agency, or within 13 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32332 (MR) the
48、military services system command. Packaging data retrieval is available from the managing Military Departments or Defense Agencys automated packaging files, CD-ROM products, or by contacting the responsible packaging activity. 6. NOTES (This section contains information of a general or explanatory n
49、ature that may be helpful, but is not mandatory.) 6.1 Intended use. The steel armor covered by this specification is intended for lightweight applications where resistance to ball and armor piercing types of ammunition and multiple hit capabilities are required. Although the major intent of UHA is an armor appliqu, UHA could be utilized as a welded structural plate if welded by s
