ASTM B21/B21M-01e1

    Historical Standard: ASTM B21/B21M-01e1 Standard Specification for Naval Brass Rod, Bar, and Shapes

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    ASTM B21 / B21M

    1. Scope

    1.1 This specification establishes the requirements for naval brass rod, bar, and shapes produced from Copper Alloys UNS No. C46200, C46400, C47940, C48200, or C48500.

    1.1.1 For piston-finish rod or shafting refer to the Other Requirements Section.

    1.1.2 For hot forging material, refer to Specification B 124/B 124M.

    1.2 Units—The values stated in inch-pound units or SI units are to be regarded separately as standard. Within the text, SI units are shown in brackets. The values in each system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.

    1.3 Warning—Mercury is a definite health hazard in use and disposal (see Performance Requirements).

    1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


    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

    B124/B124M Specification for Copper and Copper Alloy Forging Rod, Bar, and Shapes

    B154 Test Method for Mercurous Nitrate Test for Copper Alloys

    B249/B249M Specification for General Requirements for Wrought Copper and Copper-Alloy Rod, Bar, Shapes and Forgings

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

    B858 Test Method for Ammonia Vapor Test for Determining Susceptibility to Stress Corrosion Cracking in 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

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

    E18 Test Methods for Rockwell Hardness of Metallic Materials

    E478 Test Methods for Chemical Analysis of Copper Alloys


    ICS Code

    ICS Number Code 77.150.30 (Copper products)

    UNSPSC Code

    UNSPSC Code 30102410(Brass rods); 30261500(Brass bars)


    DOI: 10.1520/B0021_B0021M-01E01

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