1、Designation: B248 17Standard Specification forGeneral Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar1This standard is issued under the fixed designation B248; the number immediately following the designation indicates the year oforiginal adoption or, in the case
2、 of revision, 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 U.S. Department of Defense.1. Scope*1.1 This
3、specification establishes the general requirementscommon to several wrought product specifications. Unlessotherwise specified in the purchase order or in an individualspecification, these general requirements shall apply to copperand copper-alloy plate, sheet, strip, and rolled bar suppliedunder eac
4、h of the following product specifications issued byASTM: B19, B36/B36M, B96/B96M, B103/B103M, B121/B121M, B122/B122M, B130, B152/B152M, B169/B169M,B194, B422/B422M, B465, B534, B591, B592, B694, B740,B747, B768, B888/B888M, and B936.21.2 UnitsThis specification is the companion specificationto SI Sp
5、ecification B248M; therefore, no SI equivalents areshown in this specification.1.3 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides a
6、nd Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 The following documents of the issue in effect on dateof material purchase form a part of this specification to theextent referenced herein:2.2 ASTM Standards:3B19 Specifi
7、cation for Cartridge Brass Sheet, Strip, Plate,Bar, and DisksB36/B36M Specification for Brass Plate, Sheet, Strip, AndRolled BarB96/B96M Specification for Copper-Silicon Alloy Plate,Sheet, Strip, and Rolled Bar for General Purposes andPressure VesselsB103/B103M Specification for Phosphor Bronze Plat
8、e,Sheet, Strip, and Rolled BarB121/B121M Specification for Leaded Brass Plate, Sheet,Strip, and Rolled BarB122/B122M Specification for Copper-Nickel-Tin Alloy,Copper-Nickel-Zinc Alloy (Nickel Silver), and Copper-Nickel Alloy Plate, Sheet, Strip, and Rolled BarB130 Specification for Commercial Bronze
9、 Strip for BulletJacketsB152/B152M Specification for Copper Sheet, Strip, Plate,and Rolled BarB169/B169M Specification for Aluminum Bronze Sheet,Strip, and Rolled BarB193 Test Method for Resistivity of Electrical ConductorMaterialsB194 Specification for Copper-BerylliumAlloy Plate, Sheet,Strip, and
10、Rolled BarB248M Specification for General Requirements for WroughtCopper and Copper-Alloy Plate, Sheet, Strip, and RolledBar (Metric)B422/B422M Specification for Copper-Aluminum-Silicon-Cobalt Alloy, Copper-Nickel-Silicon-Magnesium Alloy,Copper-Nickel-Silicon Alloy, Copper-Nickel-Aluminum-Magnesium
11、Alloy, and Copper-Nickel-Tin Alloy Sheetand StripB465 Specification for Copper-IronAlloy Plate, Sheet, Strip,and Rolled BarB534 Specification for Copper-Cobalt-Beryllium Alloy andCopper-Nickel-Beryllium Alloy Plate, Sheet, Strip, andRolled BarB591 Specification for Copper-Zinc-Tin and Copper-Zinc-Ti
12、n-Iron-Nickel Alloys Plate, Sheet, Strip, and Rolled BarB592 Specification for Copper-Zinc-Aluminum-CobaltAlloy, Copper-Zinc-Tin-Iron Alloy Plate, Sheet, Strip, andRolled Bar1This specification is under the jurisdiction of the ASTM Committee B05 onCopper and Copper Alloys and is the direct responsib
13、ility of Subcommittee B05.01on Plate, Sheet, and Strip.Current edition approved Oct. 1, 2017. Published November 2017. Originallyapproved in 1951. Last previous edition approved in 2012 as B248 12. DOI:10.1520/B0248-17.2The UNS system for copper and copper alloys (see Practice E527) is a simpleexpan
14、sion of the former standard designation system accomplished by the additionof a prefix “C” and a suffix “00.” The suffix can be used to accommodatecomposition variations of the base alloy.3For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at service
15、astm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.*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 S
16、tatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to
17、Trade (TBT) Committee.1B694 Specification for Copper, Copper-Alloy, Copper-CladBronze (CCB), Copper-Clad Stainless Steel (CCS), andCopper-Clad Alloy Steel (CAS) Sheet and Strip forElectrical Cable ShieldingB740 Specification for Copper-Nickel-Tin Spinodal AlloyStripB747 Specification for Copper-Zirc
18、onium Alloy Sheet andStripB768 Specification for Copper-Cobalt-Beryllium Alloy andCopper-Nickel-Beryllium Alloy Strip and SheetB846 Terminology for Copper and Copper AlloysB888/B888M Specification for Copper Alloy Strip for Usein Manufacture of Electrical Connectors or Spring Con-tactsB936 Specifica
19、tion for Copper-Chromium-Iron-TitaniumAlloy Plate, Sheet, Strip and Rolled BarE8/E8M Test Methods for Tension Testing of Metallic Ma-terialsE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE
20、50 Practices for Apparatus, Reagents, and Safety Consid-erations for Chemical Analysis of Metals, Ores, andRelated MaterialsE53 Test Method for Determination of Copper in UnalloyedCopper by GravimetryE54 Test Methods for Chemical Analysis of Special Brassesand Bronzes (Withdrawn 2002)4E62 Test Metho
21、ds for Chemical Analysis of Copper andCopperAlloys (Photometric Methods) (Withdrawn 2010)4E75 Test Methods for Chemical Analysis of Copper-Nickeland Copper-Nickel-Zinc Alloys (Withdrawn 2010)4E106 Test Methods for Chemical Analysis of Copper-Beryllium Alloys (Withdrawn 2011)4E112 Test Methods for De
22、termining Average Grain SizeE118 Test Methods for Chemical Analysis of Copper-Chromium Alloys (Withdrawn 2010)4E121 Test Methods for Chemical Analysis of Copper-Tellurium Alloys (Withdrawn 2010)4E255 Practice for Sampling Copper and Copper Alloys forthe Determination of Chemical CompositionE478 Test
23、 Methods for Chemical Analysis of Copper AlloysE527 Practice for Numbering Metals and Alloys in theUnified Numbering System (UNS)3. Terminology3.1 For definitions of terms related to copper and copperalloys, see Terminology B846.3.2 Definitions of Terms Specific to This Standard:3.2.1 lengths, mill,
24、 nstraight lengths, including ends, thatcan be conveniently manufactured in the mills. Full-lengthpieces are usually 8, 10, or 12 ft and subject to establishedlength tolerances.3.2.2 lengths, stock, nstraight lengths that are mill cut andstored in advance of orders. They are usually 8, 10, or 12 ft
25、andsubject to established length tolerances.3.2.3 rolled bar, na rolled flat product over 0.188 in. thickand up to and including 12 in. wide, with sheared, sawed, ormachined edges, in straight lengths or coils (rolls).4. Materials and Manufacture4.1 Materials:4.1.1 The material of manufacture shall
26、be a cast bar, cake,or slab of such purity and soundness as to be suitable forprocessing into the products to the product specification listedin Section 1.4.1.2 When specified in the contract or purchase order thatheat identification or traceability is required, the purchasershall specify the detail
27、s desired.4.2 Manufacture:4.2.1 The product shall be manufactured by such hot-working, cold-working and annealing processes as to producea uniform wrought structure in the finished product.4.2.2 The product shall be hot- or cold-worked to thefinished size and subsequently annealed, when required, to
28、meet the temper properties specified.4.3 EdgesThe edges shall be slit, sheared, sawed, or rollededges, as specified. Slit edges shall be furnished unlessotherwise specified in the contract or purchase order. See 5.6for edge descriptions and corresponding tables for tolerances.5. Dimensions, Weights,
29、 and Permissible Variations5.1 GeneralFor 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 1Blank spaces in the tolerance tables indicate
30、either that thematerial is not available or that no tolerances have been established.5.2 ThicknessThe standard method of specifying thick-ness shall be in decimal fractions of an inch. For material0.021 in. and under in thickness, it is recommended that thenominal thicknesses be stated not closer th
31、an the nearesthalf-thousandth. (For example, specify 0.006 or 0.0065 in., butnot 0.0063 in.) For material over 0.021 in. in thickness, it isrecommended that the nominal thicknesses be stated not closerthan the nearest thousandth. (For example, specify 0.128 or0.129 in., but not 0.1285 in.) A list of
32、 preferred thicknesses isshown in Appendix X1. The thickness tolerances shall be thoseshown in Tables 1-3 for the product specification indicated:5.2.1 Table 1Thickness tolerances applicable to Specifi-cations B36/B36M, B103/B103M, B121/B121M, B152/B152M, B465, B591, B592, B747, and B888/B888M.5.2.2
33、 Table 2Thickness tolerances applicable to Specifi-cations B96/B96M, B122/B122M, B169/B169M, B194, B422/B422M, B534, B740, and B768.5.2.3 Table 3Special thickness tolerances applicable toCopper Alloy UNS No. C72500 when ordered to SpecificationB122/B122M, and to Specifications B194, B534, B740, andB
34、768 as noted in the table.4The last approved version of this historical standard is referenced onwww.astm.org.B248 1725.3 WidthThe width tolerances shall be those shown inTables 4-6, depending on the type of edge required (see 5.3.1,5.3.2, and 5.3.3):5.3.1 Table 4Width tolerances for slit metal and
35、slit metalwith rolled edges.5.3.2 Table 5Width tolerances for square-sheared metal.5.3.3 Table 6Width tolerances for sawed metal.5.4 LengthThe material shall be furnished in coils orstraight lengths of plate, sheet, strip, or rolled bar as specified.The length tolerances for straight lengths shall b
36、e those shownin Tables 7-10, depending on the method of cutting required(see 5.4.1 5.4.4). When ends are permitted, the length andquantity of the ends shall be in accordance with the schedule inTable 8.5.4.1 Table 7Length tolerances, for straight lengths.5.4.2 Table 8Schedule of minimum length and m
37、aximumweight of ends for mill lengths specific lengths with ends, andstock lengths with ends.5.4.3 Table 9Length tolerances for square-sheared metalin all widths 120 in. and under.5.4.4 Table 10Length tolerances for sawed metal.5.5 StraightnessThe straightness tolerances, which are themaximum edgewi
38、se curvature (depth of arc) in any 72-in.portion of the total length, shall be those shown in Tables11-13, depending on the type of edge required.5.5.1 Table 11Straightness tolerances for metal as slit, oras slit and straightened, or as slit and edge-rolled, or metal withdrawn edges.5.5.2 Table 12St
39、raightness tolerances for square-shearedmetal.5.5.3 Table 13Straightness tolerances for sawed metal.5.6 EdgesWhen rolled edges are required, they may beproduced by either rolling or drawing to one of the followingspecified edge contours:5.6.1 Square Edges (Square Corners)Edges shall havecommercially
40、 squared corners and with a maximum cornerradius as prescribed in Table 14.5.6.2 Rounded CornersEdges shall have rounded cornersas shown in Fig. 1 with a radius as prescribed in Table 15.5.6.3 Rounded EdgesEdges shall be rounded as shown inFig. 2 with a radius as prescribed in Table 16.5.6.4 Full-Ro
41、unded EdgesEdges shall be full rounded asshown in Fig. 3 with a radius as prescribed in Table 17.5.7 Weight Tolerances for Hot-Rolled Material:5.7.1 Table 18Lot weight tolerances for hot-rolled sheetand plate applicable to Specifications B36/B36M, B96/B96M(Copper Alloy UNS No. C65500), B103/B103M, B
42、122/B122M, B152/B152M, and B591.5.7.2 The weight of each lot of five or more plates or sheetsof the same type and the same specified dimensions whenordered to thickness, shall not vary from the theoretical bymore than the amount prescribed in Table 18 for the productspecification indicated. The weig
43、ht of any individual plate orsheet may vary from the nominal by not more than one third inexcess of the tolerances prescribed in Table 18 for the productspecification indicated. The tolerances for lots of less than fiveplates or sheets shall be governed by the tolerances forindividual plates or shee
44、ts.5.7.3 For the purpose of calculation, the densities of thematerials covered by these specifications are listed in AppendixX2.TABLE 1 Thickness Tolerances(Applicable to Specifications B36/B36M, B103/B103M, B121/B121M, B152/B152M, B465, B591, B592, B747, B888/B888M, and B936)Thickness, in.Thickness
45、 Tolerances, plus and minus,Ain.Strip Sheet8 in. andUnder in WidthOver 8 to12 in.,incl, inWidthOver 12 to14 in.,incl, inWidthOver 14 to20 in.,incl, inWidthOver 20 to24 in.,incl, in WidthOver 24 to28 in.,incl, inWidthOver 28 to36 in.,incl, in WidthOver 36 to48 in.,incl, in WidthOver 48 to60 in.,incl,
46、 in Width0.004 and under 0.0003 0.0006 0.0006 . . . . . . . . . . . . . . . . . .Over 0.004 to 0.006, incl 0.0004 0.0008 0.0008 0.0013 . . . . . . . . . . . . . . .Over 0.006 to 0.009, incl 0.0006 0.0010 0.0010 0.0015 . . . . . . . . . . . . . . .Over 0.009 to 0.013, incl 0.0008 0.0013 0.0013 0.0018
47、 0.0025 0.0025 0.003 0.0035 0.004Over 0.013 to 0.017, incl 0.0010 0.0015 0.0015 0.002 0.0025 0.0025 0.003 0.0035 0.0045Over 0.017 to 0.021, incl 0.0013 0.0018 0.0018 0.002 0.003 0.003 0.0035 0.004 0.005Over 0.021 to 0.026, incl 0.0015 0.002 0.002 0.0025 0.003 0.003 0.0035 0.004 0.005Over 0.026 to 0.
48、037, incl 0.002 0.002 0.002 0.0025 0.0035 0.0035 0.004 0.005 0.006Over 0.037 to 0.050, incl 0.002 0.0025 0.0025 0.003 0.004 0.004 0.005 0.006 0.007Over 0.050 to 0.073, incl 0.0025 0.003 0.003 0.0035 0.005 0.005 0.006 0.007 0.008Over 0.073 to 0.130, incl 0.003 0.0035 0.0035 0.004 0.006 0.006 0.007 0.
49、008 0.010Over 0.130 to 0.188, incl 0.0035 0.004 0.004 0.0045 0.007 0.007 0.008 0.010 0.012Rolled Bar PlateOver 0.188 to 0.205, incl 0.0035 0.004 0.004 0.0045 0.007 0.007 0.008 0.010 0.012Over 0.205 to 0.300, incl 0.004 0.0045 0.0045 0.005 0.009 0.009 0.010 0.012 0.014Over 0.300 to 0.500, incl 0.0045 0.005 0.005 0.006 0.012 0.012 0.013 0.015 0.018Over 0.500 to 0.750, incl 0.0055 0.007 0.007 0.009 0.015 0.015 0.017 0.019 0.023Over 0.750 to 1.00, incl 0.007 0.009 0.009 0.011 0.018 0.018 0.021 0.024 0.029Over 1.00 to 1.50, incl 0.022 0.022 0.022 0.022 0.0
