1、.“. .-.=.-1INCH-POUND IMIL-C-”24679(SH)6 -v 1988SUPERSEDINGKIL-C-15726E(SHIPS)(IN PART)20 August 1965(See 6.3)MILITARY SPECIFICATIONCOPPER-NICKEL ALXJ3Y FORGINGS AND FORGING STOCKThis specification is approved for use within the Naval Sea SystemsDepartment of the Navy, and is available for use by al
2、l DepartmentsAgencies of the Department of Defense.1. SCOPECommand,and1.1 Scopg. This specification covers copper-nickel alloy forgings (includ-ing bar and rod) and forging stock for use in applications involving seawaterexposure.1*2 * Copper-nickel alloy shall be furnished in thefollowing alloys, a
3、s specified (see 6.2.1):Alloy C70600 (formerly 9O-10)Alloy C71500 (formerly 70-30)2. APPLICABLE DOCUMENTS2.1 oveent documents .2.1=1 * The following specification andstandards form a part of this specification to the extent specified herein.Unless othemise specified, the issues of these documents sh
4、all be those listedin the issue of the Department of Defense Index of Specifications and Standards(DoDISS) and supplement thereto, citedSPECIFICATIONMILITARYMIL-C-3993 - Copper andPackagingin the solicitation.Copper-Base Alloy Mill Products;of.Beneficial comments (recommendations, additions, deletio
5、ns) and any pertinentdata which may be of use in improving this document should be addressed to:Commander, Naval Sea Systems Command, SEA 55Z3, Department of the Navy,Washington, DC 20362-5101 by using the self-addressed Standardization DocumentImprovement Proposal (DD Form 1426) appearing at the en
6、d of this documentor by letter.AMSC N/A AREA FORGON STT 4 Approved for publlc release; distribution unlimited-_-.- a-a=- Test Methods.Sampling Procedures and Tables for Inspection byAttributes.Requirements for Nondestructive Testing Methods.Identification Marking Requirements for SpecialPurpose Comp
7、onents.(Copies of specifications and standards required by contractors in connec-tion with specific acquisition functions should be obtained from the contractingactivity or as directed by the contracting activity.)2.2 Other Dubcations. The following documents form a part of thisspecification to the
8、extent specified herein. Unless otherwise specified, theissues of the documents which are DoD adopted shall be those listed in the issueof the DoDISS specified in the solicitation. Unless otherwise specified, theissues of documents not listed in the DoDISS shall be the issue of the nongovern-ment do
9、cuments which is current on the date of the solicitation.AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM).E8- Standard Test Methods of Tension Testing of MetallicMaterials. (DoD adopted)E75- Standard Methods for Chemical Analysis of Copper-Nickeland Copper-Nickel-Zinc Alloys.E 478 - Standard Method
10、s for Chemical Analysis of Copper Alloys.(Application for copies should be addressed to the American Society forTesting and Materials, 1916 Race Street, Philadelphia, PA 19103.)(Nongovernment standards and other publications are normally available fromthe organizations which prepare or which distrib
11、ute the documents. Thesedocuments also may be available in or through libraries or other informationalseiceso)2.3 . In the event of a conflict between the text ofthis specification and the references cited herein (except for associated detailspecifications, specification sheets or MS standards), the
12、 text of this specifi-cation shall take precedence. Nothing in this specification, however, shallsupersede applicable laws and regulations unless a specific exemption has beenobtained.2.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-.-,MIL-C-24679(S
13、H)II3. REQUIREMENTS3.1 * The materials shall be of such quality andpurity that the finished product shall have the properties and characteristicsprescribed herein. The materials shall be produced by hot compressive formingand shall be sufficiently worked to produce material conforming to this specif
14、i-cation. Unless othe=ise specified (see 6.2.1), forgings shall be furnished inthe hot forged condition.3.1.1 covered . Unless otherwise specified herein, all equip-ment and material used in the products covered by this specification shall be newand may be processed using recovered materials to the
15、maximum extent practicablewithout jeopardizing the specified requirements. The term “recovered materials”means materials which have been collected or recovered from solid waste andreprocessed to become a source of raw materials, as opposed to virgin rawmaterials.3*2 - The material shall conform to t
16、he requirementsof table I.TABLE I. .Copper alloy numberComposition C71500 C70600Copper plus sum ofnamed elements (minimum) 99.50 99.50Copper and silver (minimum) 65.0 86.5Nickel and cobalt 29.0-33.0 9.0-11.0Zinc (maximum) 0.50 0.50Iron 0.40-1.0 1.00-1.8Lead (maximum) 0.02 0.02Manganese (maximum) 1.0
17、 1.0Phosphorous (maximum) 0.02 0.02Sulfur (maximum) 0.02 0.02Carbon (maximum) 0.05 0.05!3.3 Hechanic 1 or _onerti s. Forgings shall conform to the mechanicalproperty requiremets shown i: table II. Mechanical properties are not requiredfor forging stock, but the stock shall meet the requirements afte
18、r proper workingand heat treatment.3Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Size of heaviest forgedsection (inches)Minimum tensile strength(kilopounds per squareinch (ksi)Minimum yield strength(0.5 percent extensionunder load (ksi)Minimum elo
19、ngation in2 inches or four timesdiameter (percent)MIL-C-24679(SH)C71500Hot finishedUp to 6,inclusive502030Hot finishedover 6and annealed,all sizes451830C70600Hot finishedUp to 6,inclusive4518303.4 oret. When specified in the contract or order,sketch shall be prepared (see 6.2.2).Hot finishedover 6an
20、d annealed,all sizes401530a forging .3.5 Rim nsie ons . The shape and dimensions of the finished forging shall beas specified (see 6.2.1) and shall be in the form of a drawing which shallinclude dimensional tolerances (see 6.2.2). Forging stock dimensions shall be asspecified (see 6.2.1).3.6 oundnes
21、s . Material shall be of uniform quality and condition and freeof defects harmful to its intended use, such as seams, pipe, cracks, laps,excessive scale, fins, porosity, and segregation as determined by the specifiedexamination and nondestructive tests (see 4.4 and 4.5). When specified (see6.2.1), f
22、orgings shall be ultrasonically and liquid penetrant inspected todemonstrate their soundness. Surface imperfections such as handling marks,straightening marks, and light mandrel and die marks will not be consideredinjurious defects.3.7 *3.7.1 Individual forgings and forging stock shall be marked wit
23、h thefollowing:(a) Producers name or trademark.(b) This specification number.(c) Heat number or heat treat lot number.4Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-If!II,-MIL-C-24679(SH)3.7.2 The method and location of marking shall be in accordan
24、ce withMIL-STD-792. Forging stock shall be marked with low stress die stamps orvibroetching.3.7.3 Where individual forgings cannot be marked in accordance with 3.7.1and 3.7.2, they may be bundled or boxed, and each bundle or box shall be markedwith a metal or oil-proof tag containing the information
25、 specified in 3.7.1.3.8.1 mAwmMms* Contaminants such as sulfur or sulfur-bearing com-pounds from lubricants used in forming, machining, or other processing, or frommarking materials used for in-process identification, shall be removed prior toany heat treatment of the material.3.8.2 rcury. During th
26、e manufacturing processes, examinations, andtests, the material shall not come into direct contact with mercury or any of itscompounds, nor with any mercury-containing device employing a single boundary ofcontainment.4. QUALITY ASSURANCE PROVISIONS4.1 for insDection. Unless othe=ise specified in the
27、contract or purchase order, the contractor is responsible for the performance ofall inspection requirements as specified herein. Except as otherwise specifiedin the contract or purchase order, the contractor may use his own or any otherfacilities suitable for the performance of the inspection requir
28、ements specifiedherein, unless disapproved by the Government. The Government resemes the rightto perform any of the inspections set forth in the specification where suchinspections are deemed necessary to assure supplies and senices conform toprescribed requirements.4*1*1 * All items must meet all r
29、equirementsof sections 3 and 5. The inspection set forth in this specification shall becomea part of the contractors overall inspection system or quality program. Theabsence of any inspection requirements in the specification shall not relieve thecontractor of the responsibility of assuring that all
30、 products or suppliessubmitted to the Government for acceptance comply with all requirements of thecontract. Sampling in quality conformance does not authorize submission of knowndefective material, either indicated or actual, nor does it coit the Gove-entto acceptance of defective material.4.1-2 *
31、men sPecified n he contractor order, a certificate of quality conformance shall be prepared for each lot ofmaterial offered for acceptance (see 6.2.2).4.2.1 Fmg.imuueigh.ing 250 DO nds and 1u ess . as shD ed. A lot shallconsist of all forgings forged from the same heat (or from a lot in which theche
32、mical analysis for each heat can be reported), heat treated at the same time,of the same design, and not exceeding 2000 pounds in as-shipped weight.5Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-IMIL-C-24679(SH)4.2.2 wo er packed to level A, B, or
33、C, as specified (see 6.2.1); and markedaccordance with MIL-C-3993.in6. NOTES6.1 hmMMASQ. Copper-nickel forgings are intended for use in mechani-cal systems and piping systems exposed to seawater and other corrosive environ-ments where a low strength material will suffice.6.2=1 . Acquisition document
34、s should specify thefollowing:(a) Title, number, and date of this specification.(b) Alloy required (see 1.2).(c) Whether forgings are to be in the hot forged condition (see 3.1).(d) Shape and dimensions of forgings (see 3.5).(e) Shape and dimensions of finished forging and dimensions of forgingstock
35、 (see 3.5).(f) If forgings are to be ultrasonically and liquid penetrantinspected (see 3.6).9Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-HIL-C-24679(SH)(g) Sampling for mechanical property tests, if other than as specified(see 4.3.2.1).(h) Level
36、of packaging and packing (see 5.1).6.2.2 ts. When this specification is used in an acquisitionand data are required to be delivered, the data requirements identified belowshall be developed as specified by an approved Data Item Description (DD Form1664) and delivered in accordance with the approved
37、Contract Data RequirementsList (CDR.L), incorporated into the contract. When the provisions of DoD FARSupplement, Part 27, Sub-Part 27.475-1 (DD Form 1423) are invoked and the DD Form1423 is not used, the data specified below shall be delivered by the contractorin accordance with the contract or pur
38、chase order requirements. Deliverable datarequired by this specification is cited in the following paragraphs.ranh no. Data ret title ADDlicable DID no. 3.4, 3.5 Manufacturers forging sketch DI-FORG-80412 -4.1.2 Certification data/report UDI-A-23264 -4.3.1.2 Certification data for UDI-T-23191 -level
39、 I material(Data item descriptions related to this specification, and identified insection 6 will be approved and listed as such in DoD 5010.12-L. , AMSDL. Copiesof data item descriptions required by the contractors in connection with specifacquisition functions should be obtained from the Naval Pub
40、lications and FormsCenter or as directed by the contracting officer.)6.2.2.1 The data requirements of 6.2.2 and any task in sections 3, 4, or 5of this specification required to be performed to meet a data requirement may bewaived by the contracting/acquisition activity upon certification by the offe
41、rorchat identical data were submitted by the offeror and accepted by the Governmentunder a previous contract for identical item acquired to this specification.This does not apply to specific data which may be required for each contractregardless of whether an identical item has been supplied previou
42、sly (forexample , test reports).6.3 sunrs Ssie on data. This specification supersedes that portion ofMIL-C-15726E(SiiIPS) which pertains to the acquisition of copper-nickel forgings.Cu-Ni sheet, plate, strip, bar and rod should be acquired to MIL-C-15726F(SH).Liquid penetrant inspectionUltrasonic in
43、spectionPreparing activity:Navy - SH(Project FORG-N143)Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-, . . (!. .NSIRUCTlfflS:Ina71 continuinga71ffortubmhtiag comnmtts sad ns forrm xw form msy be detached.Oonddemd.NOZ%: XhUformmay not be u-I to requ
44、est copies of documents, nor to request wakers, deviations, or cbrificatim ofspecification requirements on currentcontmctmCommentssubmitted on this form do not constitute or imply a71utborizstionto wdve aay portion of tha refuenced document($)or to amend coatractudr0qr8nma-(FOid dotu this hc)a71(Fol
45、d alone this line)DEPARTMENT OF THE NAVYCOMMANDERNAVAL SEA SYSTEMS COMMAND (SEA 5523)DEPARTMENT OF THE NAVY 111111pj!qWASHINGTON , DC 20362-5101 UNITED STATESOFFICIAL WStNE%a71ENALTY FOR a71RIVATE USE S300 I BUSINESS REPLY MAIL IFIRST CLASS PERMIT NO. 12503 WASHINGTON D CPOSTAGE WILL BE PAID BY THE
46、DEPARTMENT OF THE NAVYCOMMANDERNAVAL SEA SYSTEMS COMMAND (SEA 5523)DEPARTMENT OF THE NAVYWASHINGTON , DC 20362-510IProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-II IIIIIIIIIIIIIIIIIII1II1IIIIiIIfor macemwluodmiorl:.L REMARKSk NAMQ OP SUOMITTER b. WORK 78 UPHONC NUM08R (Indd8 AIU-) - Oo8hnda71a15 MAILING ADDE8S (Strutg City, S*. ZIP C-) - O,ntond 1S. DATt OF a71UDMO-10N WYMHDD) -DD 8?!M?R 1426mn, .a. . . . . . . . -Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
