ASTM B427 - 09

    Standard Specification for Gear Bronze Alloy Castings

    Active Standard ASTM B427 | Developed by Subcommittee: B05.05

    Book of Standards Volume: 02.01


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    Abstract

    This specification establishes requirements for gear bronze alloy castings with Copper Alloy No. C90800, C91700, C90700, C91600, and C92900. The castings may be furnished as one of three types: static chill, centrifugal chill, or sand cast. The alloys shall be subject to tensile strength, yield strength, elongation, and Brinell hardness tests. The Brinell readings shall be taken on the grip end of the tension test bar as described in the specification.

    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.

    1. Scope

    1.1 This specification establishes requirements for alloys whose copper alloy numbers and nominal compositions are shown in Table 1. The castings may be furnished as one of three types: static chill, centrifugal chill, or sand cast.

    1.2 The values stated in inch-pound units are to be regarded as the standard. SI values given in parentheses are for information purposes only.

    TABLE 1 Nominal Composition

    Copper
    Alloy
    UNS No.
    Previously
    Used
    Designation
    Composition, %
    CopperTinNickelLeadPhos-
    phorus
    C90800A87.812.0...00.2
    C91700B86.312.01.500.2
    C90700...87.811.0...00.2
    C91600C88.010.31.500.2
    C92900D83.510.03.52.80.2


    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

    B208 Practice for Preparing Tension Test Specimens for Copper Alloy Sand, Permanent Mold, Centrifugal, and Continuous Castings

    B824 Specification for General Requirements for Copper Alloy Castings

    B846 Terminology for Copper and Copper Alloys

    B950 Guide for Editorial Procedures and Form of Product Specifications for Copper and Copper Alloys

    E8 Test Methods for Tension Testing of Metallic Materials

    E10 Test Method for Brinell Hardness of Metallic Materials

    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 31100000(Castings and casting assemblies); 31171700(Gears)


    DOI: 10.1520/B0427-09

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