ASTM B248M - 17

    Standard Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar (Metric)

    Active Standard ASTM B248M | Developed by Subcommittee: B05.01

    Book of Standards Volume: 02.01


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    Abstract

    This specification establishes the general requirements common to several wrought products including copper and copper-alloy plates, sheets, strips, and rolled bars. The numerical values in this specification are not presented in inch-pound units, but rather, in metric or SI units only. The material for manufacture shall be a cast bar, cake, or slab of such purity and soundness as to be suitable for processing by hot- or cold-working, and annealing to produce a uniform wrought structure in the finished product. The edges shall be slit, sheared, sawed, or rolled, as specified. When rolled edges are required, they may be produced by either rolling or drawing to one of the following specified edge contours: square edges (square corners), rounded corners, rounded edges, and full-rounded edges. Products shall be sampled and prepared, then tested accordingly to examine their conformance to dimensional (thickness, length, width, weight, and straightness), mechanical (tensile and yield strength, Rockwell hardness, and elongation), electrical (resistivity and conductivity), chemical composition, and grain size requirements.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    Significance and Use

    11.1 For the purposes of determining compliance with the specified limits for requirements of the properties listed in the following table and for dimensional tolerances, an observed value or a calculated value shall be rounded as indicated in accordance with the rounding method of Practice E29:

    Property

    Rounded Unit for Observed or
    Calculated Value

     

      Chemical composition

      nearest unit in the last

      Hardness

       right-hand significant digit

      Electrical resistivity

       used in expressing

      Electrical conductivity

       the limiting value

     

      Tensile strength

      nearest 5 MPa

      Yield strength

      nearest 5 MPa

     

      Elongation:

      nearest 1 %

     

      Grain size:

     

       Under 0.060 mm

      nearest multiple of 0.005 mm

       0.060 mm and over

      nearest 0.01 mm

    1. Scope

    1.1 This specification establishes the general requirements common to several wrought product specifications. Unless otherwise specified in the purchase order or in an individual specification, these general requirements shall apply to copper and copper-alloy plate, sheet, strip, and rolled bar supplied 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, B422/B422M, B465, B534, B591, B592, B694, B740, B747, B768, B888/B888M, and B936.2

    1.2 Units—This specification is the companion specification to inch-pound Specification B248.

    1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    B19 Specification for Cartridge Brass Sheet, Strip, Plate, Bar, and Disks

    B36/B36M Specification for Brass Plate, Sheet, Strip, And Rolled Bar

    B96/B96M Specification for Copper-Silicon Alloy Plate, Sheet, Strip, and Rolled Bar for General Purposes and Pressure Vessels

    B103/B103M Specification for Phosphor Bronze Plate, Sheet, Strip, and Rolled Bar

    B121/B121M Specification for Leaded Brass Plate, Sheet, Strip, and Rolled Bar

    B122/B122M Specification for Copper-Nickel-Tin Alloy, Copper-Nickel-Zinc Alloy (Nickel Silver), and Copper-Nickel Alloy Plate, Sheet, Strip, and Rolled Bar

    B130 Specification for Commercial Bronze Strip for Bullet Jackets

    B152/B152M Specification for Copper Sheet, Strip, Plate, and Rolled Bar

    B169/B169M Specification for Aluminum Bronze Sheet, Strip, and Rolled Bar

    B193 Test Method for Resistivity of Electrical Conductor Materials

    B194 Specification for Copper-Beryllium Alloy Plate, Sheet, Strip, and Rolled Bar

    B248 Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar

    B422/B422M Specification for Copper-Aluminum-Silicon-Cobalt Alloy, Copper-Nickel-Silicon-Magnesium Alloy, Copper-Nickel-Silicon Alloy, Copper-Nickel-Aluminum-Magnesium Alloy, and Copper-Nickel-Tin Alloy Sheet and Strip

    B465 Specification for Copper-Iron Alloy Plate, Sheet, Strip, and Rolled Bar

    B534 Specification for Copper-Cobalt-Beryllium Alloy and Copper-Nickel-Beryllium Alloy Plate, Sheet, Strip, and Rolled Bar

    B591 Specification for Copper-Zinc-Tin and Copper-Zinc-Tin-Iron-Nickel Alloys Plate, Sheet, Strip, and Rolled Bar

    B592 Specification for Copper-Zinc-Aluminum-Cobalt Alloy, Copper-Zinc-Tin-Iron Alloy Plate, Sheet, Strip, and Rolled Bar

    B694 Specification for Copper, Copper-Alloy, Copper-Clad Bronze (CCB), Copper-Clad Stainless Steel (CCS), and Copper-Clad Alloy Steel (CAS) Sheet and Strip for Electrical Cable Shielding

    B740 Specification for Copper-Nickel-Tin Spinodal Alloy Strip

    B747 Specification for Copper-Zirconium Alloy Sheet and Strip

    B768 Specification for Copper-Cobalt-Beryllium Alloy and Copper-Nickel-Beryllium Alloy Strip and Sheet

    B846 Terminology for Copper and Copper Alloys

    B888/B888M Specification for Copper Alloy Strip for Use in Manufacture of Electrical Connectors or Spring Contacts

    B936 Specification for Copper-Chromium-Iron-Titanium Alloy Plate, Sheet, Strip and Rolled Bar

    E8/E8M Test Methods for Tension Testing of Metallic Materials

    E18 Test Methods for Rockwell Hardness of Metallic Materials

    E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

    E50 Practices for Apparatus, Reagents, and Safety Considerations for Chemical Analysis of Metals, Ores, and Related Materials

    E53 Test Method for Determination of Copper in Unalloyed Copper by Gravimetry

    E54 Test Methods for Chemical Analysis of Special Brasses and Bronzes

    E62 Test Methods for Chemical Analysis of Copper and Copper Alloys (Photometric Methods)

    E75 Test Methods for Chemical Analysis of Copper-Nickel and Copper-Nickel-Zinc Alloys

    E106 Test Methods for Chemical Analysis of Copper-Beryllium Alloys

    E112 Test Methods for Determining Average Grain Size

    E118 Test Methods for Chemical Analysis of Copper-Chromium Alloys

    E121 Test Methods for Chemical Analysis of Copper-Tellurium Alloys

    E255 Practice for Sampling Copper and Copper Alloys for the Determination of Chemical Composition

    E478 Test Methods for Chemical Analysis of Copper Alloys

    E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)


    ICS Code

    ICS Number Code 77.150.30 (Copper products)

    UNSPSC Code

    UNSPSC Code 30262200(Copper bars); 30262300(Copper sheets)


    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/B0248M-17

    Citation Format

    ASTM B248M-17, Standard Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar (Metric), ASTM International, West Conshohocken, PA, 2017, www.astm.org

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