1、Designation: B272 12Standard Specification forCopper Flat Products with Finished (Rolled or Drawn)Edges (Flat Wire and Strip)1This standard is issued under the fixed designation B272; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision,
2、 the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript 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 esta
3、blishes the requirements for cop-per products, flat wire and strip, with rolled or drawn finishededges produced for general application.1.1.1 The product is produced in UNS Copper Nos.C10100, C10200, C10300, C10500, C10700, C10800, C11000,C11040, C12200, and C14200 unless otherwise established byagr
4、eement between manufacturer and purchaser.1.2 UnitsValues stated in inch-pound units are to beregarded as standard. The values given in parentheses aremathematical conversions to SI units, which are provided forinformation only and are not considered standard.NOTE 1When a copper other than that list
5、ed in 1.1.1 is designated bythe purchaser, the resulting product shall conform to the physical,mechanical, performance, dimensional, and tolerance requirements peragreement between the manufacturer and purchaser.2. Referenced Documents2.1 ASTM Standards:2B49 Specification for Copper Rod Drawing Stoc
6、k for Elec-trical PurposesB170 Specification for Oxygen-Free Electrolytic CopperRefinery ShapesB193 Test Method for Resistivity of Electrical ConductorMaterialsB248 Specification for General Requirements for WroughtCopper and Copper-Alloy Plate, Sheet, Strip, and RolledBarB250/B250M Specification fo
7、r General Requirements forWrought Copper Alloy WireB577 Test Methods for Detection of Cuprous Oxide (Hydro-gen Embrittlement Susceptibility) in CopperB846 Terminology for Copper and Copper AlloysB950 Guide for Editorial Procedures and Form of ProductSpecifications for Copper and Copper AlloysE8/E8M
8、Test Methods for Tension Testing of Metallic Ma-terialsE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE53 Test Method for Determination of Copper in UnalloyedCopper by GravimetryE62 Test Methods for Chemical Analysis of Copper andCopperAlloys (Photometric Methods) (Withdrawn 2010)3E290
9、 Test Methods for Bend Testing of Material for Ductil-ityE478 Test Methods for Chemical Analysis of Copper Alloys3. General Requirements3.1 The following sections of Specification B248 constitutea part of this specification for strip products and of Specifica-tion B250/B250M for flat wire products:3
10、.1.1 Terminology,3.1.2 Materials and Manufacture,3.1.3 Workmanship, Finish, and Appearance,3.1.4 Sampling,3.1.5 Number of Tests and Retests,3.1.6 Specimen Preparation,3.1.7 Test Methods,3.1.8 Significance of Numerical Limits,3.1.9 Inspection,3.1.10 Rejection and Rehearing,3.1.11 Certification,3.1.12
11、 Test Reports,3.1.13 Packaging and Package Marking, and3.1.14 Supplementary Requirements.3.2 In addition, when a section with a title identical to thatreferenced in 3.1 appears in this specification, it containsadditional requirements that supplement those appearing inSpecifications B248 or B250/B25
12、0M, or both.1This specification is under the jurisdiction ofASTM Committee B05 on Copperand Copper Alloys and is the direct responsibility of Subcommittee B05.02 on Rod,Bar, Wire, Shapes and Forgings.Current edition approved Oct. 1, 2012. Published November 2012. Originallyapproved in 1952. Last pre
13、vious edition approved in 2007 as B272 07. DOI:10.1520/B0272-12.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM websi
14、te.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 C700, West Conshohocken, PA 19428-2959. United States14. Terminology4.1 For definitions
15、of terms related to copper and copperalloys, refer to Terminology B846.5. Ordering Information5.1 Include the following specified choices when placingorders for product under this specification, as applicable:5.1.1 ASTM designation and year of issue,5.1.2 Copper UNS No. designation (Section 1),5.1.3
16、 TemperO61 (annealed), H00 (eight hard), H01(quarter hard), H02 (half hard), H03 (three-quarter hard), H04(hard), H06 (extra hard), H08 (spring) (Section 8),5.1.4 DimensionsWidth and thickness (Section 13),5.1.5 QuantityTotal weight, footage, or number of pieces,5.1.6 How FurnishedLengths, coils, sp
17、ools, and so forth,(see sections 13.4.1 and 13.4.3 for clarification),5.1.7 Intended application, and5.1.8 Edge contours required, (see 13.6).5.2 The following options are available but may not beincluded unless specified at the time of placing of the orderwhen required:5.2.1 Electrical resistivity
18、(Section 9),5.2.2 Hydrogen embrittlement susceptibility test (Section11),5.2.3 Bend test (Section 11),5.2.4 Certification (Specification B248 or SpecificationB250/B250M, or both),5.2.5 Mill test reports (Specification B248 or SpecificationB250/B250M, or both).5.2.6 If product is purchased for agenci
19、es of the U.S.government (Section 12).5.2.7 Heat identification or traceability details.6. Material and Manufacture6.1 Materials:6.1.1 The material of manufacture shall be a copper billet,cake, wire bar or rod of such purity and soundness as to besuitable for processing into the products to the prod
20、uct speci-fication listed in Section 1.6.1.2 Copper other than that listed in 1.1.1 is permitted onlyupon agreement between the manufacturer and the purchaser(see Note 1).6.1.3 When specified in the contract or purchase order, thatheat identification or traceability is required, the purchasershall s
21、pecify the details desired.6.2 Manufacture:6.2.1 The product shall be manufactured by such hot-working, cold-working, and annealing processes as to producea uniform wrought structure in the finished product.6.3 EdgesThe edges shall be finished by rolling or draw-ing per 13.6.7. Chemical Composition7
22、.1 The material shall conform to the chemical compositionrequirements in Table 1 for the copper UNS No. designationspecified in the ordering information.7.1.1 These composition limits do not preclude the presenceof other elements. When required, limits shall be establishedand analysis required for u
23、nnamed elements by agreementbetween the manufacturer and the purchaser.8. Temper8.1 The standard tempers for products described in thisspecification are given in Table 2.8.1.1 Annealed temper O61.8.1.2 Cold-worked tempers H00, H01, H02, H03, H04,H06, and H08.9. Physical Property Requirement9.1 Elect
24、rical Resistivity Requirement:9.1.1 When specified in contract or purchase order (seesection 5) Copper UNS No. C10100, C10200, C10300,C11000, C11040, C10500, and C10700 shall conform to theelectrical mass resisitivity requirements in Table 2, when testedin accordance with Test Method B193. When Elec
25、trical Resis-tivity testing is specified for other copper alloys the acceptancerequirements shall be established by agreement between themanufacturer and the purchaser.NOTE 2The International Annealed Copper Standard electrical con-ductivity equivalents are as follows:TABLE 1 Chemical RequirementsCo
26、mposition, %Copper UNS No.Element C10100AC10200BC10300 C10500 C10700 C10800 C11000 C11040CC12200 C14200Copper (incl silver), min 99.99D99.95 99.95E99.95 99.95 99.95E99.90 99.90 99.9 99.4Phosphorus . . . . . . 0.0010.005 . . . . . . 0.0050.012 . . . . . . 0.0150.040 0.0150.040Arsenic . . . . . . . .
27、. . . . . . . . . . . . .C. . . 0.150.50Silver,min . . . 0.034 0.085 . .C. .Oxygen, max 0.0005 0.0010 . . . 0.0010 0.0010 . . . . . .C. .ARefer to Table 1, Chemical Requirements, Grade 1 of Specification B170 for impurity limits for Copper UNS No. C10100.BRefer to Table 1, Chemical Requirements, Gra
28、de 2 of Specification B170 for impurity limits for Copper UNS No. C10200.CThe following additional maximum limits shall apply: Se, 2 ppm (0.0002 %); Bi, 1.0 ppm (0.00010 %); Te, 2 ppm (0.0002 %); Group Total, Te + Se + Bi,3 ppm (0.0003 %). Sn, 5 ppm (0.0005 %); Pb, 5 ppm (0.0005 %); Fe, 10 ppm (0.00
29、10 %); Ni, 10 ppm (0.0010 %); S, 15 ppm (0.0015 %); Ag, 25 ppm (0.0025 %);Sb, 4 ppm (0.0004 %); As, 5 ppm (0.0005 %); Oxygen 100-650 ppm (0.010-0.065 %). The total maximum allowable of 65 ppm (0.065 %) does not include oxygen.DThe copper value is determined by the difference between the impurity tot
30、al and 100 %. The copper value is exclusive of Ag.EIncludes P.B272 122Electrical Resistivity,g/m2Conductivity,%0.151 76 101.000.153 28 100.000.156 14 98.160.157 75 97.160.159 40 96.1610. Mechanical Property Requirements10.1 Tensile Requirements:10.1.1 Product 0.035 in. (0.90 mm) and under in thickne
31、ssshall conform to the tensile strength and elongation require-ments prescribed in Table 2, when tested in accordance withTest Methods E8/E8M.10.1.1.1 Tensile strength test results shall be the basis foracceptance or rejection for mechanical properties for product0.035 in. (0.90 mm) and under in thi
32、ckness.10.1.2 Product over 0.035 in. (0.90 mm) in thickness shallconform to the requirements prescribed in Table 2 when testedin accordance with Test Methods E8/E8M.10.2 Rockwell Hardness:10.2.1 Product over 0.035 in. (0.90 mm) in thickness shallconform to the hardness requirements prescribed in Tab
33、le 2when tested in accordance with Test Methods E18.10.2.1.1 Rockwell hardness test results shall be the basis foracceptance or rejection for mechanical properties for productover 0.035 in. (0.90 mm) in thickness.11. Performance Requirements11.1 Hydrogen Embrittlement Susceptibility:11.1.1 Samples o
34、f finished flat wire and strip of CopperUNS Nos. C10100, C10200, C10300, C10500, C10700,C10800, C12200, and C14200 shall be capable of passing theembrittlement test of Procedure B of Test Methods B577. Theactual performance of this test is not mandatory under theterms of this specification unless de
35、finitely specified in theordering information (see 5).11.1.2 In case of dispute, Test Method C of Test MethodsB577 shall be used.11.2 Bend Test Requirement:11.2.1 When specified in contract or purchase order andtested in accordance with Test Method E290, the specimenshall withstand being bent cold (
36、room temperature) on a radiusequal to the minimum cross sectional dimension to the angleprescribed in Table 2. The bend shall be radial to this minimumdimension and after bending, no fracture shall be visible to theunaided eye on the outside bent surface.12. Purchases for U.S. Government12.1 When sp
37、ecified in the contract or purchase order,product purchased for an agency of the U.S. government shallconform to the special government requirements specified inthe Supplementary Requirements section of SpecificationB248 or B250/B250M, as appropriate.13. Dimensions and Permissible Variations13.1 Gen
38、eralFor the purpose of determining conformancewith the dimensional requirements prescribed in thisspecification, any measured value outside the specified limitingvalues for any dimension may be cause for rejection.NOTE 3Blank spaces in the tolerance tables indicate either that thematerial is not gen
39、erally available or that no tolerances have beenestablished.13.2 ThicknessThe standard method of specifying thick-ness shall be in decimal fractions of an inch. The tolerancesshall be as shown in Table 3.13.3 WidthThe standard method of specifying width shallbe in decimal fractions of an inch. The t
40、olerances shall be asshown in Table 4.TABLE 2 Mechanical (All Alloys) and Electrical Requirements (Conductor Alloys Only)Temper Thickness, in. (mm)Rockwell Tensile Elongation Bend Electrical Resistivity, max,F Scale ksi (MPa) Min in 2in %Angle,degreeg/m2at 20C (68F)Standard Name Min Max C10100C10300
41、 C10200, C11000,C11040, C10500,C10700O61 annealed up to 0.010 (0.254), inclover 0.010 (0.0254) to 0.035 (0.900), inclover 0.035 (0.900) to 0.050 (1.25), inclover 0.050 (1.25) to 0.188 (4.80), incl.65 max65 max.40 (275)38 (260)37 (255)202525251801801801800.151 760.151 760.151 760.151 760.156 140.156
42、140.156 140.156 140.153 280.153 280.153 280.153 28H0018-hard up to 0.035 (0.900), inclover 0.035 (0.900) to 0.188 (4.80), incl.548232 (220)32 (220)40 (275)40 (275)18201201200.156 140.156 140.159 400.159 400.157 750.157 75H0114-hard up to 0.035 (0.900), inclover 0.035 (0.900) to 0.188 (4.80), incl.60
43、8634 (235)34 (235)42 (290)42 (290)15151201200.156 140.156 140.159 400.159 400.157 750.157 75H0212-hard up to 0.035 (0.900), inclover 0.035 (3.20) to 0.188 (4.80), incl.779137 (255)37 (255)46 (315)46 (315)10101201200.156 140.156 140.159 400.159 400.157 750.157 75H0334-hard up to 0.035 (0.900), inclov
44、er 0.035 (3.20) to 0.188 (4.80), incl.829441 (280)41 (280)50 (345)50 (345)661201200.156 140.156 140.159 400.159 400.157 750.157 75H04 hard up to 0.035 (0.900), inclover 0.035 (0.900) to 0.125 (3.20), inclover 0.125 (3.20) to 0.188 (4.80), incl.8597809543 (295)43 (295)43 (295)58 (400).4441201201200.1
45、56 140.156 140.156 140.159 400.159 400.159 400.157 750.157 750.157 75H06 extrahardup to 0.035 (0.900), inclover 0.035 (3.20) to 0.188 (4.80), incl.889747 (325)47 (325)56 (385)56 (385).0.156 140.156 140.159 400.159 400.157 750.157 75H08 spring up to 0.035 (0.900), inclover 0.035 (3.20) to 0.188 (4.80
46、), incl.919850 (345)50 (345)58 (400)58 (400).0.156 140.156 140.159 400.159 400.157 750.157 75B272 12313.4 LengthsHard temper flat wire and strip, unless oth-erwise specified, (see 5.1.6) shall be furnished in straightlengths.13.4.1 Straight lengths shall be furnished in stock lengthswith ends includ
47、ed, in accordance with the schedule shown inTable 5, unless the order specifies stock lengths only, specificlengths, or specific lengths with ends.13.4.2 The length tolerance for full length pieces shall be asshown in Table 6.13.4.3 Soft temper flat wire and strip, unless otherwisespecified (see 5.1
48、.6), shall be furnished, at the manufacturersoption, in rolls, bucks, or reels.13.5 StraightnessThe deviation from straightness shallnot exceed the limits shown in Table 7.13.5.1 To determine compliance with this tolerance thelength shall, in case of disagreement, be checked by thefollowing method:1
49、3.5.1.1 Place the lengths on a level table so that the arc ofdeparture from straightness is horizontal. Measure the depth ofarc to the nearest132 in. (0.79 mm) using a metal scale and astraightedge.13.6 Edge Contours:13.6.1 Square CornersUnless otherwise specified, thematerial shall be finished with commercially square cornerswith the maximum permissible radius as shown in Table 8.13.6.2 Rounded CornersWhen specified, the material maybe furnished with corners rounded as shown in Fig. 1 to aquarter circle of a radius as shown in
