1、Designation: B250/B250M 12B250/B250M 13Standard Specification forGeneral Requirements for Wrought Copper Alloy Wire1This standard is issued under the fixed designation B250/B250M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the
2、 year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope*1.1 This specification establis
3、hes requirements common to wrought copper and copper alloy wire and shall apply toSpecifications B16/B16M, B99/B99M, B134/B134M, B159/B159M, B197/B197M, B206/B206M, B272, B301/B301M, B453/B453M, B967/B967M, and B974/B974M to the extent referenced therein.1.2 The chemical composition, physical and me
4、chanical properties, and all other requirements not included in this specificationshall be prescribed in the product specification.1.3 UnitsValues stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, SI unitsare shown in brackets. The values state
5、d in each system may not be exact equivalents; therefore, each system shall be usedindependently of the other. Combining values from the two systems may result in non-conformance with the standard.1.4 The following safety hazard caveat pertains only to the test methods described in this specificatio
6、n. This standard does notpurport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard toestablish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use.2. Referenced D
7、ocuments2.1 ASTM Standards:2B16/B16M Specification for Free-Cutting Brass Rod, Bar and Shapes for Use in Screw MachinesB99/B99M Specification for Copper-Silicon Alloy Wire for General ApplicationsB134/B134M Specification for Brass WireB159/B159M Specification for Phosphor Bronze WireB193 Test Method
8、 for Resistivity of Electrical Conductor MaterialsB194 Specification for Copper-Beryllium Alloy Plate, Sheet, Strip, and Rolled BarB197/B197M Specification for Copper-Beryllium Alloy WireB206/B206M Specification for Copper-Nickel-Zinc (Nickel Silver) Wire and Copper-Nickel Alloy WireB272 Specificati
9、on for Copper Flat Products with Finished (Rolled or Drawn) Edges (Flat Wire and Strip)B301/B301M Specification for Free-Cutting Copper Rod, Bar, Wire, and ShapesB453/B453M Specification for Copper-Zinc-Lead Alloy (Leaded-Brass) Rod, Bar, and ShapesB846 Terminology for Copper and Copper AlloysB900 P
10、ractice for Packaging of Copper and Copper Alloy Mill Products for U.S. Government AgenciesB967/B967M Specification for Copper-Zinc-Tin-Bismuth Alloy Rod, Bar and WireB974/B974M Specification for Free-Cutting Bismuth Brass Rod, Bar and WireE3 Guide for Preparation of Metallographic SpecimensE8/E8M T
11、est Methods for Tension Testing of Metallic MaterialsE18 Test Methods for Rockwell Hardness of Metallic MaterialsE29 Practice for Using Significant Digits in Test Data to Determine Conformance with SpecificationsE54 Test Methods for Chemical Analysis of Special Brasses and Bronzes (Withdrawn 2002)31
12、 This specification is under the jurisdiction ofASTM Committee B05 on Copper and CopperAlloys and is the direct responsibility of Subcommittee B05.02 on Rod, Bar,Wire, Shapes and Forgings.Current edition approved Oct. 1, 2012April 1, 2013. Published November 2012April 2013. Originally approved in 19
13、51. Last previous edition approved in 20072012 asB250 07.B250 12. DOI: 10.1520/B0250_B0250M-12.10.1520/B0250_B0250M-13.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer t
14、o the standards Document Summary page on the ASTM website.3 The last approved version of this historical standard is referenced on www.astm.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previ
15、ous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Chan
16、ges section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1E62 Test Methods for Chemical Analysis of Copper and Copper Alloys (Photometric Methods) (Withdrawn 2010)3E75 Test Methods for Chemical Ana
17、lysis of Copper-Nickel and Copper-Nickel-Zinc Alloys (Withdrawn 2010)3E112 Test Methods for Determining Average Grain SizeE118 Test Methods for Chemical Analysis of Copper-Chromium Alloys (Withdrawn 2010)3E121 Test Methods for Chemical Analysis of Copper-Tellurium Alloys (Withdrawn 2010)3E255 Practi
18、ce for Sampling Copper and Copper Alloys for the Determination of Chemical CompositionE478 Test Methods for Chemical Analysis of Copper AlloysE581 Test Methods for Chemical Analysis of Manganese-Copper Alloys3. Terminology3.1 For definitions of terms related to copper and copper alloys, refer to Ter
19、minology B846.4. Materials and Manufacture4.1 Materials:4.1.1 The materials of manufacture shall be a form (cast bar, billet, rod, etc.) of the copper or copper alloy covered by theproduct specification, of such purity and soundness as to be suitable for processing into the products required.4.1.2 W
20、hen specified in the contract or purchase order, that heat identification or traceability is required, the purchaser shallspecify the details desired.NOTE 1Due to the discontinuous nature of the processing of castings into wrought products, it is not always practical to identify specific castinganal
21、ysis with a specific quantity of finished material.4.2 Manufacture:4.2.1 The material shall be manufactured by such hot working, cold working, and annealing processes as to produce a uniformwrought structure in the finished product.4.2.2 The product shall be hot or cold worked to the finished size,
22、and subsequently annealed when required, to meet the temperproperties specified in the product specification.4.2.3 EdgesThe edges shall be drawn or rolled: refer to Dimensions and Permissible Variations section.5. Chemical Composition5.1 The material of manufacture shall conform to the chemical comp
23、osition requirements prescribed in the productspecification.5.1.1 Results of analysis on a product (check) sample shall conform to the composition requirements within the permittedanalytical variance specified in the product specification.5.2 The composition limits established for the Copper Alloy U
24、NS No. designation specified in the product specification do notpreclude the presence of other elements. By agreement between the manufacturer and the purchaser, limits may be established andanalysis required for unnamed elements.5.3 When chemical composition has been determined during the course of
25、 manufacture, analysis of the finished product by themanufacturer is not required unless specifically stipulated in the contract or purchase order.6. Dimensions and Permissible Variations6.1 GeneralFor the purpose of determining conformance with the dimensional requirements prescribed in this specif
26、ication,any measured value outside the specified limiting value for any dimension may be cause for rejection.6.1.1 The dimensions and tolerances for products referenced to this specification, shall be as noted in the following paragraphsand tables, where the product specification is noted in the tab
27、le heading.NOTE 2Blank spaces in the tolerance tables indicate either that the product is not generally available or that no tolerances have been established.6.2 Diameter or Distance Between Parallel SurfacesThe method of specifying wire diameter or distances between parallelsurfaces shall be in dec
28、imal fractions of an inch or in millimeters.Tables 1 and 2List the tolerances for diameter or distances between parallel surfaces of wire in round, hexagonal and octagonalcross sections.6.3 ThicknessThe method of specifying thickness of wire shall be in decimal fractions of an inch or in millimeters
29、.Tables 3 and 4List the thickness tolerances for flat wire in rectangular and square cross sections.6.4 WidthThe method of specifying width shall be in decimal fractions of an inch or in millimeter.Tables 5 and 6List the width tolerances for flat wire in rectangular and square cross sections.6.5 Len
30、gth:6.5.1 Round, hexagonal, and octagonal wire shall be furnished in coils or reels, consisting of a single length as may be agreedupon between the manufacturer and the purchaser.B250/B250M 1326.5.2 Flat (rectangular and square) wire when furnished in straight, specific, or stock lengths shall not e
31、xceed the lengthtolerances in Table 7.6.5.3 Stock lengths with short lengths included as specified in Table 8 shall be furnished, unless the contract or purchase orderspecifically states stock or specific lengths are required.TABLE 1 Tolerances for Diameter or Distance Between ParallelSurfaces of Wi
32、re(Applicable to Specifications B16/B16M, B99/B99M Copper Alloy UNSNo. C65100, B134/B134M, B301/B301M, B453/B453M, B967/B967M,and B974/B974M.)Diameter or DistanceBetween ParallelSurfaces,in. mmTolerances, Plus and MinusARound,in. mmHexagonal,Octagonal,in. mmUp to 0.010 0.25, incl 0.0001 0.003 . . .
33、. . .Over 0.0100.020 0.250.50,incl0.0002 0.005 . . . . . .Over 0.0200.030 0.500.75,incl0.0003 0.008 . . . . . .Over 0.0300.040 0.751.0, incl 0.0004 0.010 0.0008 0.020Over 0.0400.050 1.01.2, incl 0.0005 0.013 0.0010 0.025Over 0.0500.060 1.21.5, incl 0.0006 0.015 0.0012 0.030Over 0.0600.080 1.52.0, in
34、cl 0.0008 0.020 0.0016 0.040Over 0.0800.150 2.03.8, incl 0.0010 0.025 0.002 0.050Over 0.1500.500 3.812, incl 0.0015 0.040 0.003 0.075Over 0.5000.750 1220, incl 0.002 0.050 0.004 0.10AIf tolerances are specified as all plus or all minus, double the values given.TABLE 2 Tolerances for Diameter or Dist
35、ance Between ParallelSurfaces of Wire(Applicable to Specifications B99/B99M Copper Alloy UNS No.C65500, B159/B159M, B197/B197M, and B206/B206M.)Diameter or DistanceBetween ParallelSurfaces,in. mmTolerances, Plus and MinusARound,in. mmHexagonal,Octagonal,in. mmUp to 0.010 0.25, incl 0.0002 0.005 . .
36、. . . .Over 0.0100.020 0.250.50,incl0.0003 0.008 . . . . . .Over 0.0200.030 0.500.75,incl0.0005 0.013 . . . . . .Over 0.0300.040 0.751.0, incl 0.0007 0.018 0.002 0.050Over 0.0400.050 1.01.2, incl 0.0008 0.020 0.003 0.075Over 0.0500.060 1.21.5, incl 0.0010 0.025 0.003 0.075Over 0.0600.080 1.52.0, inc
37、l 0.0015 0.040 0.004 0.10Over 0.0800.150 2.03.8, incl 0.002 0.050 0.004 0.10Over 0.1500.500 3.812, incl 0.002 0.050 0.004 0.10Over 0.5000.750 1220, incl 0.003 0.075 0.005 0.13AIf tolerances are specified as all plus or all minus, double the values given.TABLE 3 Thickness Tolerances for Flat (Rectang
38、ular and Square)Wire(Applicable to Specification B134/B134M.) and Specification B99/B99M(Copper Alloy No. C65100).)Thickness, in. mmThickness Tolerances, Plus andMinus,A in. mm for Widths Given inInches mmUp to 12 12, incl Over 12 12 to 11432, inclUp to 0.013 0.33, incl 0.0010 0.025 0.0013 0.033Over
39、 0.0130.050 0.331.25, incl 0.0013 0.033 0.0015 0.040Over 0.0500.090 1.252.30, incl 0.0015 0.040 0.002 0.050Over 0.0900.130 2.303.30, incl 0.002 0.050 0.0025 0.065Over 0.1300.188 3.304.80, incl 0.003 0.075 0.0035 0.090AIf tolerances are specified as all plus or all minus, double the values given.B250
40、/B250M 133Table 8Lists the schedule of lengths, specific or stock, with ends, for flat (rectangular or square) wire furnished in straightlengths.6.6 StraightnessFor flat (rectangular and square) wire furnished in straight lengths in applicable specifications the deviationfrom straightness shall not
41、exceed the limitations specified in Table 9.TABLE 4 Thickness Tolerances for Flat (Rectangular and Square)Wire(Applicable to Specifications B159/B159M, B197/B197M, andB206/B206M and B206/B206MB99/B99M.)(Copper Alloy No. C65500).)Thickness, in. mmThickness Tolerances, Plus andMinus,A in. mm for Width
42、s Given inInches mmUp to 12 12, incl Over 12 to 114 12to 32, inclUp to 0.050 1.2, incl 0.0015 0.040 0.002 0.050Over 0.0500.090 1.22.3, incl 0.002 0.050 0.003 0.075Over 0.0900.130 2.33.3, incl 0.003 0.075 0.004 0.10Over 0.1300.188 3.34.8, incl 0.004 0.10 0.0045 0.11AIf tolerances are specified as all
43、 plus or all minus, double the values given.TABLE 5 Width Tolerances for Flat (Rectangular) Wire(Applicable to Specification B134/B134M.) and B99/B99M(Copper Al-loy No. C65100).)(For Square Wire Use Thickness Tolerances in Table 3.)Width, in. mm Tolerances, Plus andMinus,A in. mmUp to 0.050 1.25, in
44、cl 0.0013 0.025Over 0.0500.090 1.252.30, incl 0.0015 0.040Over 0.0900.130 2.303.30, incl 0.002 0.050Over 0.1300.188 3.304.80, incl 0.003 0.075Over 0.1880.500 4.8012.5, incl 0.0035 0.090Over 0.5001.25 12.532.0, incl 0.005 0.125AIf tolerances are specified as all plus or all minus, double the values g
45、iven.TABLE 6 Width Tolerances for Flat (Rectangular) Wire(Applicable to Specifications B159/B159M, B197/B197M, andB206/B206M and B206/B206MB99/B99M.)(Copper Alloy No. C65500).)(For Square Wire Use Thickness Tolerances in Table 4.)Width, in. mm Tolerances, Plus andMinus,A in. mmUp to 0.050 1.2, incl
46、0.0015 0.040Over 0.0500.090 1.22.3, incl 0.002 0.050Over 0.0900.130 2.33.3, incl 0.003 0.075Over 0.1300.188 3.34.8, incl 0.004 0.10Over 0.1880.500 4.812, incl 0.005 0.13Over 0.5001.25 1232, incl 0.007 0.18AIf tolerances are specified as all plus or all minus, double the values given.TABLE 7 Length T
47、olerances for Straight Lengths (Specific andStock) of Flat (Rectangular and Square) Wire(Applicable to Specifications B134/B134M, B159/B159M, B197/B197M, and B206/B206M.)Lengths Length Tolerances Applicable Only toFull Length PiecesA in. mmSpecific lengths 38 10Specific lengths with ends 1 25Stock l
48、engths with or without ends 1 25BATolerances are all plus; if all minus tolerances are desired, use the same values;if tolerances plus and minus are desired, halve the values given.BAs stock lengths are cut and placed in stock in advance of orders, departure fromthis tolerance is not practicable.B250/B250M 1346.6.1 To determine compliance with this tolerance, the lengths shall, in case of disagreement, be checked by placing the lengthson a level table so that the arc or departure from straightness is horizontal. Measure the d
