ASTM B974/B974M-12 - 1.4.2012
 
1. Scope

1.1 This specification establishes the requirements for free-cutting bismuth brass rod, bar and wire of UNS Alloy No. C49250, C49260 and C49340 suitable for high-speed screw machine work, or for general applications.

1.2 Typically, product made to this specification is furnished as straight lengths, or coils when requested.

1.3 Units—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.

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

E8/E8M-25

Standard Test Methods for Tension Testing of Metallic Materials

B846-24

Standard Terminology for Copper and Copper Alloys

B250/B250M-26

Standard Specification for General Requirements for Wrought Copper Alloy Wire

B249/B249M-23

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

Copper and copper alloys determination of bismuth content Diethyldithiocarbamate spectrometric method Available from International Organization for Standardization (ISO), ISO Central Secretariat, BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier, Geneva, Switzerland, http://www.iso.org.

E527-23

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

E478-24

Standard Test Methods for Chemical Analysis of Copper Alloys

E92-26

Standard Test Methods for Vickers Hardness and Knoop Hardness of Metallic Materials

E62-89(1996)

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

E54-80(1996)

Standard Test Methods for Chemical Analysis of Special Brasses and Bronzes (Withdrawn 2002)

JIS H 1068:2005

Method for Determination of Bismuth in Copper and Copper Alloys Available from Japanese Standards Association (JSA), Mita MT Bldg., 3-13-12 Mita, Minato-ku, Tokyo 108-0073, Japan, http://www.jsa.or.jp.

E53-07

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