1、INCH-POUNDMIL-DTL-32096A(OS)29 October 2002 SUPERSEDING MIL-DTL-32096(OS)6 May 2002 DETAIL SPECIFICATION CARTRIDGE CASE, STEEL, 5-INCH, MK 9 MOD 3 (54 OR 62 CALIBER) This specification is approved for use by the Naval Sea Systems Command, Department of the Navy, andis available for use by all Depart
2、ments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the requirements for the 5-inch, 54- or 62-caliber steel cartridgecase, herein referred to as the “cartridge case.“ 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified i
3、n sections 3 and 4 of this specification.This section does not include documents cited in other sections of this specification or recommended foradditional information or as examples. While every effort has been made to ensure the completeness ofthis list, document users are cautioned that they must
4、 meet all specified requirements documents specifiedin Sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications and standards. The following specifications and standards form a part of thisdocument to the extent specified herein. Unless o
5、therwise specified, the issues of these documents arethose 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). SPECIFICATIONS FEDERAL A-A-1684 Tape, Pressure-Sensitive Adhesive (Plastic Film) Bene
6、ficial comments (recommendations, additions, deletions) and any pertinent data which may be of usein improving this document should be addressed to: Commander, Indian Head Division, Naval SurfaceWarfare Center, Documentation Branch (Code 4230), Indian Head, MD 20640-5035 by using theStandardization
7、Document Improvement Proposal (DD Form 1426) appearing at the end of this documentor sending a letter.AMSC N/A FSC 1320 DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
8、MIL-DTL-32096A(OS)2DEPARTMENT OF DEFENSE MIL-DTL-117 Bags, Heat SealableMIL-S-3289 Steel, Plate and Disk, Carbon, Forging QualityMIL-D-3464 Desiccants Activated, Bagged, Packaging Use and Static DehumidificationSTANDARDS DEPARTMENT OF DEFENSE MIL-STD-129 Marking for Shipment and StorageDOD-STD-2101
9、Classification of Characteristics(Unless otherwise indicated, copies of federal and military specifications and standards are available from:Standardization Documents Order Desk, Bldg. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.)2.2.2 Other Government documents, drawings and publications. T
10、he following other Governmentdocuments, drawings, and publications form a part of this document to the extent specified herein. Unlessotherwise specified, the issues are those cited in the solicitation. DRAWINGS NAVAL SEA SYSTEMS COMMAND (CAGE Codes 10001 and 53711) 444048 5in/54 Caliber Case Body G
11、age Assembly, Receiver 3208375 Charge, Propelling, 5in/54 Caliber, Mk 67 Mod 3 7263988 Case, Cartridge, MK 9 Mod 3 (Application for copies of NAVSEA drawings should be addressed to: Commander, Naval SurfaceWarfare Center, Crane Division (Attn: Code 4021), Crane, IN 47522-5001.) PUBLICATIONS NAVAL SE
12、A SYSTEMS COMMAND OD 47471 Method for Rating the Effects of Salt Spray Testing on Zinc ElectroplatedCartridge Cases (Application for copies should be addressed to: Commander, Indian Head Division, Naval Surface WarfareCenter, Guns Branch (Code 4210K), Indian Head, MD 20640-5035.) 2.3 Non-Government
13、publications. The following documents form a part of this document to theextent specified herein. Unless otherwise specified, the issues of the documents which are DOD adoptedProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32096A(OS)3are thos
14、e listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issuesof documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2).AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM B 117 Standard Practice for Operating
15、Salt Spray (Fog) Apparatus (DoD adopted) ASTM B 499 Standard Test Method for Measurement of Coating Thicknesses by theMagnetic Method: Nonmagnetic Coatings on Magnetic Basis Metals (DoDadopted) ASTM B 633 Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel(DoD adopted) AST
16、M D 5486 Standard Specification for Pressure-Sensitive Tape for Packaging, Box Closure,and Sealing (DoD adopted) ASTM E 8 Standard Test Methods for Tension Testing of Metallic Materials (DoDadopted) ASTM E 18 Standard Test Methods for Rockwell Hardness and Rockwell SuperficialHardness of Metallic Ma
17、terials, (DoD adopted) (Application for copies should be addressed to the American Society for Testing and Materials, 100 BarrHarbor Drive, West Conshohocken, PA 19428-2959.) AMERICAN SOCIETY FOR QUALITY (ASQ) ASQ Z1.4 Sampling Procedures and Tables for Inspection by Attributes (DoD adopted) (Applic
18、ation for copies should be addressed to the American Society for Quality, P.O. Box 3005, 611 EWisconsin Ave, Milwaukee, WI 53201-3005.) (Non-Government standards and other publications are normally available from the organizations thatprepare or distribute the documents. These documents also may be
19、available in or through libraries orother informational services.) 2.4 Order of precedenceIn the event of a conflict between the text of this document and the references cited herein, the text ofthis document takes precedence. Nothing in this document, however, supersedes applicable laws andregulati
20、ons unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article sample. When specified (see 6.2), a sample shall be subjected to first articleinspection (see 6.3) in accordance with 4.3. 3.2 Characteristics. Unless otherwise specified in the contract or purchase order, the cartr
21、idge caseshall conform to the requirements specified herein and on Drawing 7263988 (see 4.5.1). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32096A(OS)43.3 High stress expansion (M101). The cartridge case shall show no evidence of cracks i
22、n any portionof the case when subjected to the high stress expansion test of 4.5.2. 3.4 Hardness (M102). The cartridge cases shall conform to the hardness value for region D of figure 1shall be as specified in table I. Values for regions A1, A2, B, and C, as shown in figure 1, are advisory(see 4.5.3
23、). 3.5 Tensile strength and elongation (M103). The yield strength and elongation values for thecartridge case shall be as specified in table I in the regions shown in figure 1 (see 4.5.4 and 4.5.5). TABLE I. Hardness and tensile strength. Hardness1RegionMax2MinYield Strengthat 2% offset, (psi)Elonga
24、tion(1“ gage length)A1 C42B75 - -A2 C42 B90 -BC42C34135,000 Min 5% MinC C42 B95 90,000 Min 6% MinDB85-1Rockwell “C“ or “B“ scale. 2Stress relief and hydrogen embrittlement of ASTM B 633 do not apply. 3.6 Protective coating (M104). The case shall be zinc plated in accordance with ASTM B 633, Type IIe
25、xcept that the exterior thickness of the protective coating shall be between 0.0003 inch and 0.0008 inchand the interior plating thickness shall be 0.00015 inch minimum. This requirement does not apply withinone inch of the head. Thinner plating at the inert standoff contact points is acceptable pro
26、vided there areno more than nine. The protective coating shall show no corrosion of basis metal. The size and frequencyof the black corrosion products of zinc shall not exceed that of the established standard of 0.2400 (see4.5.6). After testing, white corrosion products of zinc that do not interfere
27、 with chambering of thecartridge case are acceptable. 3.7 Chamber gage (M105). Each cartridge case shall fully chamber in a Navy-approved chamber gage(see 4.5.7). 3.8 Ballistics (M106). Each cartridge case shall load, eject, show no splits, and otherwise performsatisfactorily when ballistically test
28、ed (see 4.5.8). 3.8.1 Case extraction (M107). Cartridge cases tested under automatic and semiautomatic action shallbe ejected and shall in no way cause the weapon to cease firing. When fired in the single shot mode, thecartridge case shall be capable of being extracted by manual operation of the ext
29、raction system. Note: The term “ejected“ means that the cartridge case is thrown clear of the breech, permitting loadingof the subsequent round. The term “extract“ means that the cartridge case is loosened and pulled to therear, by the normal operation of the extraction system, sufficiently to permi
30、t ready removal. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32096A(OS)5FIGURE 1. Tensile and hardness specimen locations.1.750Region Dg37 1.000g38 .000.875 MaxRegion A1.6A4.512.5Tensile specimenscircumferential ringlocations whenballisti
31、c testing is tobe done. ANote: Dimensions are in inches. Region C9.250 .125Region BRegion BRC 34-42.278 MaxRegion A175 RB MinRegion A290 RB Min.06 Min45 Max45Max2 Max2 MaxSection A-ARegion A175 RB MinRegion A(.875)Provided by IHSNot for ResaleNo reproduction or networking permitted without license f
32、rom IHS-,-,-MIL-DTL-32096A(OS)63.9 Item identification. Item identification marking of all cartridge cases shall be in accordance withthe contract or purchase order (see 6.2). 3.10 Workmanship (M108). The cartridge case shall be produced in such a manner as to ensurecompliance with all the requireme
33、nts of this specification and the applicable associated specifications. There shall be no burrs, cracks, tears or other imperfections of manufacture, which in the opinion of theGovernment inspector, may adversely affect either the assembly, functioning, or handling of the product. (Flutes, draw mark
34、s, loopers, slug marks, and pits shall not exceed 10 percent of the calculated wallthickness in the affected area nor be of sufficient magnitude to cause minimum or maximum dimensions tobe exceeded. Note: Grain orientation directionality is produced by rolling. A looper is a visible pattern of this
35、grainorientation extended by drawing. There shall be no flutes, pitting, draw marks or loopers in the region between the base and a circum-ferential line 3 inches from the base of the cartridge case.) The only acceptable surface defects on theinterior base-to-wall radius are those exemplified by the
36、 sample board approved by the contracting activity(see 4.5.1). 4. VERIFICATION 4.1 Classification of inspections. The inspection requirements specified herein are classified asfollows: a. First article inspection (see 4.3) b. Quality conformance inspection (see 4.4) 4.2 Classification of characteris
37、tics. The characteristics verified by the tests and examinationsspecified herein and in the detail inspection are classified as critical, major or minor in accordance withDOD-STD-2101. Requirements for critical characteristics are identified by the symbol (C), and majorcharacteristics by the symbol
38、(M). The number following the classification symbol indicates the serialnumber of the characteristic. Requirements which are not annotated with a classification code areclassified as minor.4.3 First article inspection. The first article sample shall consist of 158 cartridge cases and shall beexamine
39、d and tested in accordance with table II. The cartridge cases shall be the same as for regularproduction and manufactured under the same conditions as the production lot. Further production ofcartridge cases by the contractor, prior to the approval of the first article, shall be at the contractors r
40、isk.4.3.1 First article sample acceptance/rejection. Acceptance or rejection of the first article sampleshall be in accordance with table II. For those where the acceptance criteria is not shown, any failure tomeet the requirements shall be cause for rejection of the sample. 4.4 Quality conformance
41、inspection. Quality conformance inspection shall consist of all theexaminations and tests as specified in table II.4.4.1 Lot size. Unless otherwise specified in the contract or purchase order (see 6.2), the production lotshall consist of 10,000 cartridge cases plus those required for test purposes.
42、Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32096A(OS)7TABLE II. First article sample and quality conformance inspection and sampling. Quality ConformanceInspectionTest OrExaminationRequirementParagraphMethodParagraphFirst ArticleSample S
43、ize Test UnitsPer LotConsequencesOf FailuresDimensional 3.2 4.5.1 158 56 Reject lotHigh stressexpansion3.3 4.5.2 158 100%Rejectdefective unitsHardness 3.4 4.5.3 5 51Reject lotTensile strengthand elongation3.54.5.4 and4.5.55 51Reject lotProtective coatinga. Thicknessb. Corrosion3.6 4.5.633312Reject l
44、otReject lot2Chamber gage 3.7 4.5.7 158 100%Rejectdefective unitsBallistic 3.834.5.8 150 50 Reject lotItem identification 3.9 4.5.1 158 100%Rejectdefective unitsWorkmanship 3.10 4.5.1 158 100%Rejectdefective unitsPackaging andmarkingSection 5 4.6 158 100%Rejectdefective units1 Unless otherwise speci
45、fied in the applicable associated specification. 2 Nonconformance of one sample to meet the corrosion code requirements shall require testing of anadditional 3 samples. Failure of any of the additional samples to meet the corrosion code requirement shall because for rejection of the lot. 3Nonconform
46、ance of one sample to meet the case ejection requirement of 3.8.1 shall require testing of anadditional 100 samples. Failure of any of the additional samples to meet the ejection requirement shall because for rejection of the lot. 4.5 Methods of inspection. 4.5.1 Visual and dimensional examination.
47、The charges shall be visually and dimensionallyexamined for conformance to requirements of 3.2, 3.9 and 3.10. Four-power (4X) magnification may beused for examination of defects. 4.5.2 High stress expansion test. Each cartridge case in the lot (see 4.4.1), after heat treatment butprior to tapering,
48、shall be subjected to a high stress expansion test. The cartridge case shall be expandeddiametrically 0.050-inch minimum while under pressure, in a zone extending from 1.5 inches above theProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32096A
49、(OS)8flange to 9 inches above the flange. Expansion will decrease as the flange is approached with expansion atthe flange to be zero. 4.5.3 Hardness. Cartridge cases shall be prepared and tested in accordance with ASTM E 18 todetermine conformance to 3.7. The hardness shall be checked at the locations shown in Figure 1. Hardness readings shall be taken on each of two sections cut longitudinally from diametrically opposite
