1、Designation: B250/B250M 16Standard 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 year of last
2、 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 U.S. Department of Defense.1. Scope*1.1 This specification establishes requ
3、irements common towrought 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 extentreferenced therein.1.2 The chemical composition, physical and mechanicalpro
4、perties, and all other requirements not included in thisspecification shall be prescribed in the product specification.1.3 UnitsValues stated in either SI units or inch-poundunits are to be regarded separately as standard. Within the text,SI units are shown in brackets. The values stated in eachsyst
5、em may not be exact equivalents; therefore, each systemshall be used independently of the other. Combining valuesfrom the two systems may result in non-conformance with thestandard.1.4 The following safety hazard caveat pertains only to thetest methods described in this specification. This standard
6、doesnot purport to address all of the safety concerns, if any,associated with its use. It is the responsibility of the user of thisstandard to establish appropriate safety and health practicesand to determine the applicability of regulatory limitationsprior to use.2. Referenced Documents2.1 ASTM Sta
7、ndards:2B16/B16M Specification for Free-Cutting Brass Rod, Barand Shapes for Use in Screw MachinesB99/B99M Specification for Copper-Silicon Alloy Wire forGeneral ApplicationsB134/B134M Specification for Brass WireB159/B159M Specification for Phosphor Bronze WireB193 Test Method for Resistivity of El
8、ectrical ConductorMaterialsB194 Specification for Copper-BerylliumAlloy Plate, Sheet,Strip, and Rolled BarB197/B197M Specification for Copper-Beryllium AlloyWireB206/B206M Specification for Copper-Nickel-Zinc (NickelSilver) Wire and Copper-Nickel Alloy WireB272 Specification for Copper Flat Products
9、 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 Practice for Packaging of Coppe
10、r and Copper AlloyMill Products for U.S. Government AgenciesB967/B967M Specification for Copper-Zinc-Tin-BismuthAlloy Rod, Bar and WireB974/B974M Specification for Free-Cutting Bismuth BrassRod, Bar and WireE3 Guide for Preparation of Metallographic SpecimensE8/E8M Test Methods for Tension Testing o
11、f Metallic Ma-terialsE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE54 Test Methods for Chemical Analysis of Special Brassesand Bronzes (Withdrawn 2002)3E62 Test Methods for Chemical Anal
12、ysis of Copper andCopperAlloys (Photometric Methods) (Withdrawn 2010)3E75 Test Methods for Chemical Analysis of Copper-Nickeland Copper-Nickel-Zinc Alloys (Withdrawn 2010)3E112 Test Methods for Determining Average Grain SizeE118 Test Methods for Chemical Analysis of Copper-Chromium Alloys (Withdrawn
13、 2010)3E121 Test Methods for Chemical Analysis of Copper-Tellurium Alloys (Withdrawn 2010)31This specification is under the jurisdiction ofASTM Committee B05 on Copperand CopperAlloys and is the direct responsibility of Subcommittee B05.02 on Rod,Bar, Wire, Shapes and Forgings.Current edition approv
14、ed Oct. 1, 2016. Published October 2016. Originallyapproved in 1951. Last previous edition approved in 2013 as B250/B250M13.DOI: 10.1520/B0250_B0250M-16.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMSt
15、andards volume information, refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box
16、 C700, West Conshohocken, PA 19428-2959. United States1E255 Practice for Sampling Copper and Copper Alloys forthe Determination of Chemical CompositionE478 Test Methods for Chemical Analysis of Copper AlloysE581 Test Methods for Chemical Analysis of Manganese-Copper Alloys3. Terminology3.1 For defin
17、itions of terms related to copper and copperalloys, refer to Terminology 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 t
18、o besuitable for processing into the products required.4.1.2 When specified in the contract or purchase order, thatheat identification or traceability is required, the purchasershall specify the details desired.NOTE 1Due to the discontinuous nature of the processing of castingsinto wrought products,
19、 it is not always practical to identify specific castinganalysis with a specific quantity of finished material.4.2 Manufacture:4.2.1 The material shall be manufactured by such hotworking, cold working, and annealing processes as to producea uniform wrought structure in the finished product.4.2.2 The
20、 product shall be hot or cold worked to the finishedsize, and subsequently annealed when required, to meet thetemper properties specified in the product specification.4.2.3 EdgesThe edges shall be drawn or rolled: refer toDimensions and Permissible Variations section.5. Chemical Composition5.1 The m
21、aterial of manufacture shall conform to thechemical composition requirements prescribed in the productspecification.5.1.1 Results of analysis on a product (check) sample shallconform to the composition requirements within the permittedanalytical variance specified in the product specification.5.2 Th
22、e composition limits established for the CopperAlloyUNS No. designation specified in the product specification donot preclude the presence of other elements. By agreementbetween the manufacturer and the purchaser, limits may beestablished and analysis required for unnamed elements.5.3 When chemical
23、composition has been determined dur-ing the course of manufacture, analysis of the finished productby the manufacturer is not required unless specifically stipu-lated in the contract or purchase order.6. Dimensions and Permissible Variations6.1 GeneralFor the purpose of determining conformancewith t
24、he dimensional requirements prescribed in thisspecification, any measured value outside the specified limitingvalue for any dimension may be cause for rejection.6.1.1 The dimensions and tolerances for products refer-enced to this specification, shall be as noted in the followingparagraphs and tables
25、, where the product specification is notedin the table heading.NOTE 2Blank spaces in the tolerance tables indicate either that theproduct is not generally available or that no tolerances have beenestablished.6.2 Diameter or Distance Between Parallel SurfacesThemethod of specifying wire diameter or d
26、istances betweenparallel surfaces shall be in decimal fractions of an inch or inmillimeters.Tables 1 and 2List the tolerances for diameter or distancesbetween parallel surfaces of wire in round, hexagonal andoctagonal cross sections.6.3 ThicknessThe method of specifying thickness of wireshall be in
27、decimal fractions of an inch or in millimeters.Tables 3 and 4List the thickness tolerances for flat wire inrectangular and square cross sections.6.4 WidthThe method of specifying width shall be indecimal fractions of an inch or in millimeter.Tables 5 and 6List the width tolerances for flat wire inre
28、ctangular and square cross sections.6.5 Length:6.5.1 Round, hexagonal, and octagonal wire shall be fur-nished in coils or reels, consisting of a single length as may beagreed upon between the manufacturer and the purchaser.6.5.2 Flat (rectangular and square) wire when furnished instraight, specific,
29、 or stock lengths shall not exceed the lengthtolerances in Table 7.6.5.3 Stock lengths with short lengths included as specifiedin Table 8 shall be furnished, unless the contract or purchaseorder specifically states stock or specific lengths are required.Table 8Lists the schedule of lengths, specific
30、 or stock,with ends, for flat (rectangular or square) wire furnished instraight lengths.6.6 StraightnessFor flat (rectangular and square) wirefurnished in straight lengths in applicable specifications thedeviation from straightness shall not exceed the limitationsspecified in Table 9.6.6.1 To determ
31、ine compliance with this tolerance, thelengths shall, in case of disagreement, be checked by placingthe lengths on a level table so that the arc or departure fromTABLE 1 Tolerances for Diameter or Distance BetweenParallel Surfaces of Wire(Applicable to Specifications B16/B16M, B99/B99M Copper Alloy
32、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 . . . . . .Over 0.0100.020 0.250.50, incl 0.0002 0.005 . . . . . .Over
33、0.0200.030 0.500.75, incl 0.0003 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, incl 0.0008 0.020 0.0016 0.040Over 0.0800.150 2.03.8, incl 0.00
34、10 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.B250/B250M 162straightness is horizontal. Measure the depth of the arc to thenearest132 in. 1 mm usi
35、ng a straight-edge.6.7 Edge ContoursFlat (rectangular and square) wireapplicable to listed specifications shall, unless otherwise speci-fied in the contract or purchase order, be finished withcommercially square corners with a maximum permissibleradius of1100 in. 0.3 mm for wire132 to116 in. 1 to 1.
36、5 mminclusive in thickness, and of164 in. 0.4 mm for wire over116to316 in. 1.5 to 5 mm inclusive in thickness.6.7.1 Sharp CornersWhen specified in the contract orpurchaser order, the corner radius shall be 0.003 in.0.080 mm maximum on all sizes of flat wire up to andincluding 0.188 in. 5 mm between
37、flats.6.7.2 Rounded CornersWhen specified in the contract orpurchase order, flat wire over18 to316 in. 3 to 5 mm,inclusive in thickness may be finished with corners rounded asshown in Fig. 1 to a quarter of a radius of132 in. 1 mm. Thetolerance on the radius shall be 625 %. Wire up to18 in.3 mm incl
38、usive in thickness, may be finished with a fullrounded edge as described in 6.7.4.TABLE 2 Tolerances for Diameter or Distance BetweenParallel Surfaces of Wire(Applicable to Specifications B99/B99M Copper Alloy UNS No.C65500, B159/B159M, B197/B197M, and B206/B206M)Diameter or DistanceBetween Parallel
39、Surfaces,in. mmTolerances, Plus and MinusARound,in. mmHexagonal,Octagonal,in. mmUp to 0.010 0.25, incl 0.0002 0.005 . . . . . .Over 0.0100.020 0.250.50, incl 0.0003 0.008 . . . . . .Over 0.0200.030 0.500.75, incl 0.0005 0.013 . . . . . .Over 0.0300.040 0.751.0, incl 0.0007 0.018 0.002 0.050Over 0.04
40、00.050 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, incl 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 0.13A
41、If tolerances are specified as all plus or all minus, double the values given.TABLE 3 Thickness Tolerances for Flat (Rectangular and Square)Wire(Applicable to Specification B134/B134M and Specification B99/B99M(Copper Alloy No. C65100)Thickness, in. mmThickness Tolerances, Plus andMinus,Ain. mm for
42、Widths Given inInches mmUp to12 12, inclOver12 12 to 11432, inclUp to 0.013 0.33, incl 0.0010 0.025 0.0013 0.033Over 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.
43、80, incl 0.003 0.075 0.0035 0.090AIf tolerances are specified as all plus or all minus, double the values given.TABLE 4 Thickness Tolerances for Flat (Rectangular and Square)Wire(Applicable to Specifications B159/B159M, B197/B197M, B206/B206M and B99/B99M (Copper Alloy No. C65500)Thickness, in. mmTh
44、ickness Tolerances, Plus andMinus,Ain. mm for Widths Given inInches mmUp to12 12, inclOver12 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 0.1
45、0 0.0045 0.11AIf tolerances are specified as all plus or all minus, double the values given.TABLE 5 Width Tolerances for Flat (Rectangular) Wire(Applicable to Specification B134/B134M and B99/B99M (CopperAlloy No. C65100)(For Square Wire Use Thickness Tolerances in Table 3)Width, in. mmTolerances, P
46、lus andMinus,Ain. mmUp to 0.050 1.25, incl 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 al
47、l plus or all minus, double the values given.TABLE 6 Width Tolerances for Flat (Rectangular) Wire(Applicable to Specifications B159/B159M, B197/B197M, B206/B206M and B99/B99M (Copper Alloy No. C65500)(For Square Wire Use Thickness Tolerances in Table 4)Width, in. mmTolerances, Plus andMinus,Ain. mmU
48、p to 0.050 1.2, incl 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 Tolerances for Straight Lengths (Specific andStock) of Flat (Rectangular and Square) Wire(Applicable to Specifications B134/B134M, B159/B159M, B197/B197M, and B206/B206M)LengthsLength Toleran
