ASTM B21/B21M-18 - 1.10.2018
 
1. Scope

1.1 This specification establishes the requirements for naval brass rod, bar, and shapes produced from Copper Alloy UNS Nos. C46200, C46400, C46750, C47940, C48200, C48500, or C48640.

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 B124/B124M.

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 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 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.5 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

E62-89(1996)

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

E478-08(2017)

Standard Test Methods for Chemical Analysis of Copper Alloys

B154-16(2022)

Standard Test Method for Mercurous Nitrate Test for Copper Alloys

B249/B249M-23

Standard Specification for General Requirements for Wrought Copper and Copper-Alloy Rod, Bar, Shapes and Forgings

E18-22

Standard Test Methods for Rockwell Hardness of Metallic Materials

B601-18a

Standard Classification for Temper Designations for Copper and Copper Alloys´Wrought and Cast (Includes all amendments and changes 10/24/2018).

B858-06(2018)

Standard Test Method for Ammonia Vapor Test for Determining Susceptibility to Stress Corrosion Cracking in Copper Alloys

E8/E8M-24

Standard Test Methods for Tension Testing of Metallic Materials

B124/B124M-20

Standard Specification for Copper and Copper Alloy Forging Rod, Bar, and Shapes