1、Designation: B248 12B248 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 t
2、he case 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.
3、1 This specification establishes the general requirements common to several wrought product specifications. Unless otherwisespecified in the purchase order or in an individual specification, these general requirements shall apply to copper and copper-alloyplate, sheet, strip, and rolled bar supplied
4、 under each of the following product specifications issued by ASTM: B19, B36/B36M,B96/B96M, B103/B103M, B121/B121M, B122/B122M, B130, B152/B152M, B169/B169M, B194, B422B422/B422M, B465,B534, B591, B592, B694, B740, B747, B768, B888/B888M, and B888B936.21.2 UnitsThis specification is the companion sp
5、ecification to SI Specification B248M; therefore, no SI equivalents are shownin this specification.1.3 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International S
6、tandards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 The following documents of the issue in effect on date of material purchase form a part of this specification to the extentreferenced herein:2.2 ASTM Stan
7、dards:3B19 Specification for Cartridge Brass Sheet, Strip, Plate, Bar, and DisksB36/B36M Specification for Brass Plate, Sheet, Strip, And Rolled BarB96/B96M Specification for Copper-SiliconAlloy Plate, Sheet, Strip, and Rolled Bar for General Purposes and Pressure VesselsB103/B103M Specification for
8、 Phosphor Bronze Plate, 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 AlloyPlate, Sheet, Strip, and Rolled BarB130 Specificatio
9、n for Commercial Bronze Strip for Bullet JacketsB152/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 Conductor MaterialsB194 Specification for Copper-Beryllium Al
10、loy Plate, Sheet, Strip, and Rolled BarB248M Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar(Metric)B422B422/B422M Specification for Copper-Aluminum-Silicon-Cobalt Alloy, Copper-Nickel-Silicon-Magnesium Alloy,Copper-Nickel-Silicon Alloy,
11、 Copper-Nickel-Aluminum-Magnesium Alloy, and Copper-Nickel-Tin Alloy Sheet and StripB465 Specification for Copper-Iron Alloy Plate, Sheet, Strip, and Rolled Bar1 This specification is under the jurisdiction of theASTM Committee B05 on Copper and CopperAlloys and is the direct responsibility of Subco
12、mmittee B05.01 on Plate,Sheet, and Strip.Current edition approved April 1, 2012Oct. 1, 2017. Published May 2012November 2017. Originally approved in 1951. Last previous edition approved in 20072012 asB248 07.B248 12. DOI: 10.1520/B0248-12.10.1520/B0248-17.2 The UNS system for copper and copper alloy
13、s (see Practice E527) is a simple expansion of the former standard designation system accomplished by the addition of aprefix “C” and a suffix “00.” The suffix can be used to accommodate composition variations of the base alloy.3 For referencedASTM standards, visit theASTM website, www.astm.org, or
14、contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standardsstandards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what cha
15、nges have been made to the previous 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 offi
16、cial document.*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 States1B534 Specification for Copper-Cobalt-Beryllium Alloy and Copper-Nickel-Beryllium Alloy Plate, Sheet, Strip,
17、 and Rolled BarB591 Specification for Copper-Zinc-Tin and Copper-Zinc-Tin-Iron-Nickel Alloys Plate, Sheet, Strip, and Rolled BarB592 Specification for Copper-Zinc-Aluminum-Cobalt Alloy, Copper-Zinc-Tin-Iron Alloy Plate, Sheet, Strip, and Rolled BarB694 Specification for Copper, Copper-Alloy, Copper-
18、Clad Bronze (CCB), Copper-Clad Stainless Steel (CCS), and Copper-Clad Alloy Steel (CAS) Sheet and Strip for Electrical Cable ShieldingB740 Specification for Copper-Nickel-Tin Spinodal Alloy StripB747 Specification for Copper-Zirconium Alloy Sheet and StripB768 Specification for Copper-Cobalt-Berylli
19、um Alloy and Copper-Nickel-Beryllium Alloy Strip and SheetB846 Terminology for Copper and Copper AlloysB888B888/B888M Specification for Copper Alloy Strip for Use in Manufacture of Electrical Connectors or Spring ContactsB936 Specification for Copper-Chromium-Iron-Titanium Alloy Plate, Sheet, Strip
20、and Rolled BarE8/E8M Test 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 SpecificationsE50 Practices forApparatus, Reagents, and Safety Considerations fo
21、r ChemicalAnalysis of Metals, Ores, and Related MaterialsE53 Test Method for Determination of Copper in Unalloyed Copper by GravimetryE54 Test Methods for Chemical Analysis of Special Brasses and Bronzes (Withdrawn 2002)4E62 Test Methods for Chemical Analysis of Copper and Copper Alloys (Photometric
22、 Methods) (Withdrawn 2010)4E75 Test Methods for Chemical Analysis of Copper-Nickel and Copper-Nickel-Zinc Alloys (Withdrawn 2010)4E106 Test Methods for Chemical Analysis of Copper-Beryllium Alloys (Withdrawn 2011)4E112 Test Methods for Determining Average Grain SizeE118 Test Methods for Chemical Ana
23、lysis 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 for the Determination of Chemical CompositionE478 Test Methods for Chemical Analysis of Copper AlloysE527 Practice
24、for Numbering Metals and Alloys in the Unified Numbering System (UNS)3. Terminology3.1 For definitions of terms related to copper and copper alloys, see Terminology B846.3.2 Definitions of Terms Specific to This Standard:3.2.1 coil, na length of the product wound into a series of connected turns. Th
25、e unqualified term “coil” as applied to “flatproduct” usually refers to a coil in which the product is spirally wound, with the successive layers on top of one another.(Sometimes called a “roll.”)3.2.1 lengths, mill, nstraight lengths, including ends, that can be conveniently manufactured in the mil
26、ls. Full-length piecesare usually 8, 10, or 12 ft and subject to established length tolerances.3.2.2 lengths, stock, nstraight lengths that are mill cut and stored in advance of orders. They are usually 8, 10, or 12 ft andsubject to established length tolerances.3.2.3 rolled bar, na rolled flat prod
27、uct over 0.188 in. thick and 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 be a cast bar, cake, or slab of such purity and soundness as to be suitable for
28、processinginto the products to the product specification listed in Section 1.4.1.2 When specified in the contract or purchase order that heat identification or traceability is required, the purchaser shallspecify the details desired.4.2 Manufacture:4.2.1 The product shall be manufactured by such hot
29、-working, cold-working and annealing processes as to produce a uniformwrought structure in the finished product.4.2.2 The product shall be hothot- or cold-worked to the finished size and subsequently annealed, when required, to meet thetemper properties specified.4.3 EdgesThe edges shall be slit, sh
30、eared, sawed, or rolled edges, as specified. Slit edges shall be furnished unless otherwisespecified in the contract or purchase order. See 5.6 for edge descriptions and corresponding tables for tolerances.4 The last approved version of this historical standard is referenced on www.astm.org.B248 172
31、5. Dimensions, Weights, and Permissible Variations5.1 GeneralFor the purpose of determining conformance with the dimensional requirements prescribed in this specification,any measured value outside the specified limiting values for any dimension may be cause for rejection.NOTE 1Blank spaces in the t
32、olerance tables indicate either that the material is not available or that no tolerances have been established.5.2 ThicknessThe standard method of specifying thickness shall be in decimal fractions of an inch. For material 0.021 in.0.021 in. and under in thickness, it is recommended that the nominal
33、 thicknesses be stated not closer than the nearesthalf-thousandth. (For example, specify 0.006 or 0.0065 in., but not 0.0063 in.) For material over 0.021 in. in thickness, it isrecommended that the nominal thicknesses be stated not closer than the nearest thousandth. (For example, specify 0.128 or 0
34、.129in., but not 0.1285 in.) A list of preferred thicknesses is shown in Appendix X1. The thickness tolerances shall be those shown inTables 1-3 for the product specification indicated:5.2.1 Table 1Thickness tolerances applicable to Specifications B36/B36M, B103/B103M, B121/B121M, B152/B152M,B465, B
35、591, B592, B747, and B888B888/B888M.5.2.2 Table 2Thickness tolerances applicable to Specifications B96/B96M, B122/B122M, B169/B169M, B194, B422B422/B422M, B534, B740, and B768.5.2.3 Table 3Special thickness tolerances applicable to Copper Alloy UNS No. C72500 when ordered to SpecificationB122/B122M,
36、 and to Specifications B194, B534, B740, and B768 as noted in the table.5.3 WidthThe width tolerances shall be those shown in Tables 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 slit metal with rolled edges.5.3.2 Table 5Wid
37、th tolerances for square-sheared metal.5.3.3 Table 6Width tolerances for sawed metal.5.4 LengthThe material shall be furnished in coils or straight lengths of plate, sheet, strip, or rolled bar as specified.The lengthtolerances for straight lengths shall be those shown in Tables 7-10, depending on t
38、he method of cutting required (see 5.4.1 5.4.4).When ends are permitted, the length and quantity of the ends shall be in accordance with the schedule in Table 8.5.4.1 Table 7Length tolerances, for straight lengths.5.4.2 Table 8Schedule of minimum length and maximum weight of ends for mill lengths sp
39、ecific lengths with ends, and stocklengths with ends.5.4.3 Table 9Length tolerances for square-sheared metal in all widths 120 in. and under.5.4.4 Table 10Length tolerances for sawed metal.5.5 StraightnessThe straightness tolerances, which are the maximum edgewise curvature (depth of arc) in any 72-
40、in. portionof the total length, shall be those shown in Tables 11-13, depending on the type of edge required.TABLE 1 Thickness Tolerances(Applicable to Specifications B36/B36M, B103/B103M, B121/B121M, B152/B152M, B465, B591, B592, B747, B888/B888M, and B888B936)Thickness, in.Thickness Tolerances, pl
41、us and minus,A in.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, in Width0.004
42、 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 0.0025 0.0025
43、 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 0.037, incl 0.00
44、2 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 0.008 0.010Over
45、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
46、.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 0.022 0.022 0.025 0.029 0.036Over 1.50 to 2.00, incl 0.026 0
47、.026 0.026 0.026 0.026 0.026 0.030 0.036 0.044A When tolerances are specified as all plus or all minus, double the values given.B248 1735.5.1 Table 11Straightness tolerances for metal as slit, or as slit and straightened, or as slit and edge-rolled, or metal withdrawn edges.TABLE 2 Thickness Toleran
48、ces(Applicable to Specifications B96/B96M, B122/B122M, B169/B169M, B194, B422B422/B422M, B534, B740, and B768)Thickness, in.Thickness Tolerances, Plus and Minus,A in.Strip Sheet8 in. and Underin WidthOver 8 to 12in., incl, inWidthOver 12 to 14in., incl, inWidthOver 14 to 20in., incl, inWidthOver 20
49、to 24in., incl, inWidthOver 24 to 28in., incl, inWidthOver 28 to 36in., incl, inWidthOver 36 to 48in., incl, inWidthOver 48 to 60in., incl, inWidth0.004 and un-der0.0004 0.0008 0.0008 . . . . . . . . . . . . . . . . . .Over 0.004 to0.006, incl0.0006 0.0010 0.0010 0.0015 . . . . . . . . . . . . . . .Over 0.006 to0.009, incl0.0008 0.0013 0.0013 0.002 . . . . . . . . . . . . . . .Over 0.009 to0.013, incl0.0010 0.0015 0.0015 0.0025 . . . . . . . . . . . . . . .Over 0.013 to0.017, incl0.0013 0.002 0.002 0.0025 . . . . . . . . . . . . . . .Over 0.017 to0.02
