ASTM B974/B974M-16

Standard Specification for Free-Cutting Bismuth Brass Rod, Bar and Wire

ABSTRACT
This specification establishes the requirements for free-cutting a bismuth brass rod, bar and wire of UNS Alloy No.C49250 and C49260 suitable for high-speed screw machine work or for general applications. Typically, products made to this specification are furnished as straight lengths or coils when requested. The material shall conform to the chemical composition requirements, tensile strength requirements, and elongation requirements stated in this specification.
SCOPE
1.1 This specification establishes the requirements for free-cutting bismuth brass rod, bar and wire of UNS Alloy No. C49250, C49260, C49265, C49340, and C49345 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.

General Information

• Status: Historical
• Publication Date: 30-Sep-2016
• ICS: 77.120.99 - Other non-ferrous metals and their alloys
• Technical Committee: B05 - Copper and Copper Alloys
• Drafting Committee: B05.02 - Rod, Bar, Wire, Shapes and Forgings

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:B974/B974M −16
Standard Specification for
1
Free-Cutting Bismuth Brass Rod, Bar and Wire
This standard is issued under the fixed designation B974/B974M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
3
1. Scope* and Bronzes (Withdrawn 2002)
E62 Test Methods for Chemical Analysis of Copper and
1.1 This specification establishes the requirements for free-
3
CopperAlloys(PhotometricMethods)(Withdrawn2010)
cutting bismuth brass rod, bar and wire of UNS Alloy No.
E92 Test Methods for Vickers Hardness and Knoop Hard-
C49250, C49260, C49265, C49340, and C49345 suitable for
ness of Metallic Materials
high-speed screw machine work, or for general applications.
E478 Test Methods for ChemicalAnalysis of CopperAlloys
1.2 Typically,productmadetothisspecificationisfurnished
E527 Practice for Numbering Metals and Alloys in the
as straight lengths, or coils when requested.
Unified Numbering System (UNS)
2.2 Other Standards:
1.3 Units—The values stated in either SI units or inch-
JIS H 1068:2005 Method for Determination of Bismuth in
pound units are to be regarded separately as standard. The
4
Copper and Copper Alloys
values stated in each system may not be exact equivalents;
ISO5959-1984 Copperandcopperalloys–determinationof
therefore,eachsystemshallbeusedindependentlyoftheother.
bismuth content – Diethyldithiocarbamate spectrometric
Combining values from the two systems may result in non-
5
method
conformance with the standard.
1.4 This standard does not purport to address all of the
3. General Requirements
safety concerns, if any, associated with its use. It is the
3.1 The following sections of Specification B249/B249M
responsibility of the user of this standard to establish appro-
for rod and bar, and B250/B250M for wire constitute a part of
priate safety and health practices and determine the applica-
this specification:
bility of regulatory limitations prior to use.
3.1.1 Terminology,
3.1.2 Materials and Manufacture,
2. Referenced Documents
3.1.3 Sampling,
2
2.1 ASTM Standards:
3.1.4 Number of Tests and Retests,
B249/B249M Specification for General Requirements for
3.1.5 Specimen Preparation,
Wrought Copper and Copper-Alloy Rod, Bar, Shapes and
3.1.6 Test Methods,
Forgings
3.1.7 Inspection,
B250/B250M Specification for General Requirements for
3.1.8 Certification, and
Wrought Copper Alloy Wire
3.1.9 Test Reports.
B846 Terminology for Copper and Copper Alloys
3.2 In addition, when a section with a title identical to that
E8/E8M Test Methods for Tension Testing of Metallic Ma-
referenced in 3.1 appears in this specification, it contains
terials
additional requirements which supplement those appearing in
E53 Test Method for Determination of Copper in Unalloyed
Specification B249/B249M for rod and bar and B250/B250M
Copper by Gravimetry
for wire.
E54 Test Methods for ChemicalAnalysis of Special Brasses
4. Terminology
4.1 For definitions of terms related to copper and copper
1
ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper
alloys, refer to Terminology B846.
and CopperAlloys and is the direct responsibility of Subcommittee B05.02 on Rod,
Bar, Wire, Shapes and Forgings.
3
Current edition approved Oct. 1, 2016. Published November 2016. Originally The last approved version of this historical standard is referenced on
approved in 2010. Last previous edition approved in 2012 as B974/B974M – 12a. www.astm.org.
4
DOI: 10.1520/B0974_B0974M-16. Available from Japanese StandardsAssociation (JSA), Mita MTBldg., 3-13-12
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Mita, Minato-ku, Tokyo 108-0073, Japan, http://www.jsa.or.jp.
5
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Available from International Organization for Standardization (ISO), ISO
Standards volume information, refer to the standard’s Document Summary page on Central Secretariat, BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier,
the ASTM website. Geneva, Switzerland, http://www.iso.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
B974/B974M−16
5. Ordering Information 6.2.2 Theproductshallbehotorcoldworkedtothefinished
size, and subsequently annealed, when required, to meet the
5.1 Include the following information in orders for prod-
temper properties specified.
ucts:
5.1.1 ASTM designation and year of issue;
7. Chemical Composition
5.1.2 Copper UNS No. designation;
7.1 The material shall con
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: B974/B974M − 12a B974/B974M − 16
Standard Specification for
1
Free-Cutting Bismuth Brass Rod, Bar and Wire
This standard is issued under the fixed designation B974/B974M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
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 C49340C49260, C49265, C49340, and C49345 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
2
2.1 ASTM Standards:
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
E8E8/E8M Test Methods for Tension Testing of Metallic Materials
3
E8M Test Methods for Tension Testing of Metallic Materials [Metric] (Withdrawn 2008)
E53 Test Method for Determination of Copper in Unalloyed Copper by Gravimetry
3
E54 Test Methods for Chemical Analysis of Special Brasses and Bronzes (Withdrawn 2002)
3
E62 Test Methods for Chemical Analysis of Copper and Copper Alloys (Photometric Methods) (Withdrawn 2010)
E92 Test Methods for Vickers Hardness and Knoop Hardness of Metallic Materials
E478 Test Methods for Chemical Analysis of Copper Alloys
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
2.2 Other Standards:
4
JIS H 1068:2005 Method for Determination of Bismuth in Copper and Copper Alloys
5
ISO 5959-1984 Copper and copper alloys – determination of bismuth content – Diethyldithiocarbamate spectrometric method
3. General Requirements
3.1 The following sections of Specification B249/B249M for rod and bar, and B250/B250M for wire constitute a part of this
specification:
3.1.1 Terminology,
1
This specification is under the jurisdiction of ASTM Committee B05 on Copper and Copper Alloys and is the direct responsibility of Subcommittee B05.02 on Rod, Bar,
Wire, Shapes and Forgings.
Current edition approved Oct. 1, 2012Oct. 1, 2016. Published January 2013November 2016. Originally approved in 2010. Last previous edition approved in 2012 as
B974/B974M – 12.B974/B974M – 12a. DOI: 10.1520/B0974_B0974M-12A.10.1520/B0974_B0974M-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
The last approved version of this historical standard is referenced on www.astm.org.
4
Available from Japanese Industrial Standards through http://www.JIS.or.jp, or www.webstore.jsa.or.jp/webstore/JIS/Flowcontrol.JSP.Standards Association (JSA), Mita
MT Bldg., 3-13-12 Mita, Minato-ku, Tokyo 108-0073, Japan, http://www.jsa.or.jp.
5
Available from International Organization of Standards, http://www.ISO/ISO/store.htm. for Standardization (ISO), ISO Central Secretariat, BIBC II, Chemin de
Blandonnet 8, CP 401, 1214 Vernier, Geneva, Switzerland, http://www.iso.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
B974/B974M − 16
3.1.2 Materials and Manufacture,
3.1.3 Sampling,
3.1.4 Number of Tests and Retests,
3.1.5 Specimen Preparation,
3.1.6 Test Methods,
3.1.7 Inspection,
3.1.8 Certification, and
3.1.9 Test Reports.
3.2 In addition, when a section with a title identica
...