1、MIL-W-8257 hL 77777Oh 0075374 T -. MILIrcARY SPECIFICATION WIRE, COPPER-CADMIUM ACGOY % -6 7- 3 a - m-w-82598( os) This specification has been approved by the Naval Ordnance mstems Command, Department of the Navy 1. SCOPE AND CLASSIFICATION 1.1 Scope. This specification covers solid, round, copper-c
2、admium alloy wire. 1.2 Classification 1.2.1 Temper. The alloy of wire covered by this specification shall be as furnished in the hard temper. 1.2.2 - Size. The wire covered by this specification shall be nominal AWG #23, 0,0226 +0.0002 inch in diameter. 2. APPLICABLE DOClJMEXlTS to the extent specif
3、ied herein. SEWDARDS Federal Federal Standard No. 123 Fed. Test Method Sta. No. l5i Federal Standard No. 185 Military MTL- ma-io5 2.1 The following documents of the issue in effect on date of invita- tion for bids or request for proposals form a part of this specification MIL- STD-I29 Marking for Do
4、mestic Shipment (Civilian Agencies) Metals; Test Methods Identification Markings of Copper and Copper Base Alloy Mill Products sampling Procedures and Tables for Inspection by Attributes Marking for Shipment and Storage FSC 6145 r- I Provided by IHSNot for ResaleNo reproduction or networking permitt
5、ed without license from IHS-,-,- MIL-W-82578 bL = 777770b 0075375 L m-w-82598( OS) (Cupies of specifications, standards, drawings, and publications required by contractors or suppliers in connection with specific procurement functions should be obtained frmthe procuring activity or as directed by th
6、e con- tracting officer. ) 2.2 Other publications. The following documents form a part of this specification to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids or request for proposal shal apply. AMERICAN SoCm FOR “ING AND MATERIALS (Am) B
7、193 Resistivity Test of Electrical Conductor Material E8 Tension Test (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Sreet, Philadelphia, Pennsylvania lgOl3. ) (Technical society and technicd association specifications and standards are gener
8、ally available for reference from libraries. tributed among technical groups and using Federal agencies. ) They are also dis- 3.1 General 3.1.1 Conflicting requirements. In t$e event of conflict between the documents referenced herein and the contents of this specification, the contents of this spec
9、ification shall apply. 3.2 Chemical composition. The material shall conform to the chemical requirements specified in Table I, when tested in accordance with 4.4.2. TABLE I - Chemical Requirements, Percent Camposition 1 Copper Cadmium I Iron I I i 1 I 3.2.1 Analysis. Analysis shall be made regularly
10、 only for the elements specifically mentioned in Table I. If, however, the presence of other elements is suspected, or indicated in the course of routine analysis, further analysis shall be made to determine the total percentage of other 2 Provided by IHSNot for ResaleNo reproduction or networking p
11、ermitted without license from IHS-,-,-MIL-W-82578 bL 9 7777706 0075376 3 W m-w-82598( OS) elements. shall be cause for rejection of the lot from which the sample was taken. A chemical composition other than that specified in Table I 3.3 .Mechanical properties 3.3.1 Tensile properties. The tensile st
12、rength of the wire shall be 85,000 psi minimum, when tested in accordance with 4.4.3. 3.3.2 Dimensions. Wire weight will be specified in the contract, re- quisition or order. +0.0002 inch in diameter. The wire size shall be nominal AWG #23, 0.0226 3.4 Electrical properties 3.4.1 Resistivity. The res
13、istivity shall be 12-96 ohm - circular mil/ft, maximum, when corrected to +20 degrees C (+68 degrees F) and tested in ac- cordance with 4,4.4. 3.5 Processing requirement 3.5.1 Wire twist. No “flyer“ type applicator shall be used zt any stage The wire shall be applied to or removed from a of the wire
14、 fabrication. reel by rotating the reel itself. 3.6 Identification markings. When specified (see 6.2), product identi- fication marking shall be in accordance with Federal Standard No. 185. 3.7 Workmanship. Wterial shall be uniform in quality and temper; clean, sound, smooth, and free from foreign m
15、aterial, pipes, slivers, loops, cracks, seams, scale, burrs, buckles, and the defects which, due to their nature, degree, or extent, detrimentally affect the service- ability for the intended use. 4. QUALITY ASEXJRKNCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the c
16、ontract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. wise specified in the contract or order, the supplier may use his own or any other facilities suitable for the performance of the inspection re- quirements specified herein,
17、 unless disapproved by the Government. Thz Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. 4.2 - Lot. Unless otherwise specified (see 6.2), a
18、 lot shall consist of 10,ooO pounds, or fraction thereof, of material sbjected to inspection at one time. Ekcept as other- 3 o Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-82598 bL W 99999Ob 0095377 5 a m-w-82598( os) 4.3 Sampling. Samples t
19、aken from each lot for the prpose of the tests prescribed in this specification shall be selected in a manner that will represent correctly the material furnished to fulfill a particular contract or order. 4.3.1 For chemical analysis. The nuniber of samples specified in Table II shall be selected fr
20、om a different piece in each lot. not less than 2 ounces of copper alloy material shall be obtained. From each sample, TABLE II - Sampling for Chemical Analysis I Pounds of Material in Lot T Number of Samples* t rrp tq 5000 5001to io,ooo 2 4 *If the number of original bar, billets, or cakes from whi
21、ch the material is processed is less than the number of samples specified, not more than one sample need be taken from each piece. 4.3.2 For mechanical examination 4.3.2.1 Tension test. Two tension test specimens shall be taken from each lot. Each specimen shall be taken from a different piece. 4.3.
22、3 For electrical examination. Each completed length shall be used aC a sample. 4.3.4 For visual and dimensional examination. From each lot of material, a representative sample shall be selected in accordance with MIL-STD-105, Inspection Level II, with an acceptable quality level (A) of 1.5 percent.
23、The samples selected for dimensional examination may be the same as those selected for visual examination, but shall be evaluated separately. 4.4 Examination testing 4.4,i Visual and dimensional. Pieces selected in accordance with 4.3.4 shall be visually examined to determine compliance with the req
24、uirements for identification marking (see 3.6) and workmanship (see 3.7), and shall be measured for compliance with the dimensiinal requirements ( see 3.3.2) using a toolmakers microscop%-or Qptical comparator with sufficient accuracy to ensure compliance with this specification. 4.4.2 Chemical anal
25、ysis, The samples selected in accordance with 4.3.1 shall be analyzed by the wet chemical method in accordance with Method 111 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-U-82598 bL m 7999906 0095378 7 m MTL-W- 598( OS ) of Federal Test Met
26、hod Standard No. i5i or the spectro-chemical method in accordance with Method 112 of Federal Test Method Standard No. i51 to determine conformance to 3.2. be made when emission methods are not used. by the wet method (Method ill) shall be the basis for acceptance. A single analysis of a composite sa
27、mple may In case of dispute, the analysis 4.4.3 Tension tests. Specimens from samples selected in accordance with 4.3.2.1 shall be tested in accordance with ASIM E 8. 4.4.4 Resistivity tests. Specimens selected in accordance with 4.3.3 shall be tested in accordance with ASCM B 193. 4.5 Rejection. An
28、y sample unit having one or more defects shall be re- If the number of nonconforming sample mits in the sample exceeds jected. the acceptance number specified in 4,3.4 for that sample size, the entire lot shall be rejected subject to the provisions of the section on “Accep- tance and Rejection“ of M
29、IL-STD-105. 4.5.1 Test failures. A lot shall be rejected for failure to meet any of the test requirements when-tested in accordance with 4.4, subject to the provisions of the section on “Rejection and Retests“ of Federal Test Method Standard No. 151. 5. PREPARATION FOR DELIVERY * 5.1 Cleaning and pr
30、eservation. Not applicable. 5.2 Unit packaging and packing, The product shall be packaged and packed in accordance with the manufacturers standard practice into con- tainers of a type and size commonly used for the purpose, to insure accep- tance by carrier for transportation at the lowest rate appl
31、icable and to afford maximum protection from normal hazards of transportation. 5.3 Marking (see 6.2) 5.3.1 Civil agencies. In addition to any special marking required by the contract or order, shipping containers shall be marked in accordance with Federal Standard No. 123. 5.3.2 Military agencies. I
32、n addition to any special marking required by the contract or order, shipping containers shall be marked in accor- dance with MIL-STD-129. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-W-82578 bL M 77797Ob 0075377 7 m-w-82598( OS) 6. NOTES 6
33、.1 Intended use, 6.2 Ordering data. Purchasers should select the preferred options per- The wire is intended for use as a portion of the com- mwxtcation circuit between certain ordnance equipments. I mitted herein and include the following information in procurement docu- ment s : t (a) (b) (c) (a)
34、Title, nuniber, and date of this specification. Weight of reel/coil required (see 6,3). Product identification marking in accordance with Federal Stan- dard No. 185 when required. mimum gross weight of container. e) Special marking if required. f) Exceptions to this specification. 6.3 Density. For o
35、rdering information only, the nominal density is approximately 0.321 pound per cubic inch, which converts to approximately 1.545 pound per loo0 feet, Custodian : Navy - OS Preparing Activity Navy - OS Project No. 6145-N217 r U. S. WERNMENT PRINTING WFICL: 1972 -714 163/5643 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
