Active Standard ASTM B974 / B974M | Developed by Subcommittee: B05.02
Book of Standards Volume: 02.01
Historical (view previous versions of standard)
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.
1.3 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
B249/B249M Specification for General Requirements for Wrought Copper and Copper-Alloy Rod, Bar, Shapes and Forgings
B250/B250M Specification for General Requirements for Wrought Copper Alloy Wire
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]
E53 Test Method for Determination of Copper in Unalloyed Copper by Gravimetry
E54 Test Methods for Chemical Analysis of Special Brasses and Bronzes
E62 Test Methods for Chemical Analysis of Copper and Copper Alloys (Photometric Methods)
E92 Test Method for Vickers Hardness of Metallic Materials
E478 Test Methods for Chemical Analysis of Copper Alloys
Other StandardsISO5959-1984 Copper and copper alloys - determination of bismuth content - Diethyldithiocarbamate spectrometric method Available from International Organization of Standards, http://www.ISO/ISO/store.htm.
ICS Number Code 77.120.99 (Other non-ferrous metals and their alloys)