ASTM B103/B103M-09

    Historical Standard: ASTM B103/B103M-09 Standard Specification for Phosphor Bronze Plate, Sheet, Strip, and Rolled Bar

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    ASTM B103 / B103M

    1. Scope

    1.1 This specification establishes copper-tin alloy (phosphor bronze), copper-tin-lead alloy (leaded phosphor bronze), and copper-tin-lead-zinc alloy (bearing bronze), plate, sheet, strip, and rolled bar. The phosphor bronzes commonly are used for deep drawing into bellows and stamping and forming into spring devices and into terminals and connectors for electrical apparatus because they combine high strength with high elongation. The leaded phosphor bronzes are used where strength, corrosion resistance, and machinability are required. The bearing bronze is used in bushings, bearings, and load-bearing thrust washers. The following alloys are covered:

    Copper Alloy UNS   No. Nominal Composition, %Previously Used Designation
    CopperTin ZincLead
    C51000955. . . . . .A1
    C51100964. . . . . .A
    C51180964. . .. . .. . .
    C51900946. . . . . .
    C52100A92 8. . .. . .C
    C52180928. . . . . . . . .
    C524009010 . . . . . .D
    C53400945. . . 1B1
    C5440088444B2
    __________________

    A SAE Specification CA 521 conforms to the requirements of UNS No. C52100.

    Note 1—All of the above alloys contain small amounts of phosphorus, used as a deoxidant in melting, and to enhance the mechanical properties.

    1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.


    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

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

    B248M Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar (Metric)

    B601 Classification for Temper Designations for Copper and Copper Alloys--Wrought and Cast

    B846 Terminology for Copper and Copper Alloys

    E8 Test Methods for Tension Testing of Metallic Materials

    E8M Test Methods for Tension Testing of Metallic Materials [Metric]

    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

    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 30262300(Copper sheets); 72121100(Commercial and office building construction services)


    DOI: 10.1520/B0103_B0103M-09

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