ASTM B249/B249M-20

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

ABSTRACT
This specification establishes the general requirements common to wrought copper and copper alloy rods, bars, shapes, and forgings. Products shall be manufactured by hot working, cold working, or both, and finished by cold working, annealing, or heat treatment and straightening as identified necessary to meet the properties specified. Materials shall be sampled and prepared, then tested accordingly to examine their conformance to dimensional (mass, diameter, length, straightness, and edge contours), mechanical (tensile strength, Rockwell hardness, elongation, and hydrogen embrittlement), electrical resistivity, chemical composition, and grain size requirements. The products shall also meet performance requirements when subjected to residual stress, mercurous nitrate, ammonia vapor, and semiguided bend tests. In the event of conflict between this specification and the individual casting product specifications, the requirements of the casting specification shall take precedence.
SIGNIFICANCE AND USE
12.1 For the purpose of determining compliance with the specified limits for requirements of the properties listed in the following table and for dimensional tolerances, an observed value or a calculated value shall be rounded as indicated in accordance with the rounding method of Practice E29.    
Property  
Rounded Unit for Observed or
Calculated Value  
Chemical composition  
Hardness  
nearest unit in the last right-hand  
Electrical resistivity  
significant digit used in expressing the  
Electrical conductivity  
limiting value  
Tensile strength  
nearest ksi [5 MPa]  
Yield strength  
Elongation:  
nearest 1 %  
Grain size:  
Under 0.060 mm  
nearest multiple of 0.005 mm  
0.060 mm and over  
nearest 0.01 mm
SCOPE
1.1 This specification2 establishes the general requirements common to wrought copper and copper alloy rod, bar, shapes, and forgings which shall apply to Specifications B16/B16M, B21/B21M, B98/B98M, B124/B124M, B138/B138M, B139/B139M, B140/B140M, B150/B150M, B151/B151M, B187/B187M, B196/B196M, B283/B283M, B301/B301M, B371/B371M, B411/B411M, B441, B453/B453M, B455, B570, B870, B927/B927M, B929, B967/B967M, B974/B974M, and B981/B981M to the extent referenced therein.  
1.2 The chemical composition, physical and mechanical properties, and all other requirements not included in this specification are prescribed in the product specification.  
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 are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
1.3.1 Within the text the SI values are given in brackets.  
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.

General Information

• Status: Historical
• Publication Date: 31-Mar-2020
• ICS: 77.150.30 - Copper products
• 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:B249/B249M −20
Standard Specification for
General Requirements for Wrought Copper and Copper-
1
Alloy Rod, Bar, Shapes and Forgings
This standard is issued under the fixed designation B249/B249M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* 2. Referenced Documents
3
2
2.1 ASTM Standards:
1.1 This specification establishes the general requirements
B16/B16M Specification for Free-Cutting Brass Rod, Bar
common to wrought copper and copper alloy rod, bar, shapes,
and Shapes for Use in Screw Machines
and forgings which shall apply to Specifications B16/B16M,
B21/B21M Specification for Naval Brass Rod, Bar, and
B21/B21M, B98/B98M, B124/B124M, B138/B138M, B139/
Shapes
B139M, B140/B140M, B150/B150M, B151/B151M, B187/
B98/B98M Specification for Copper-SiliconAlloy Rod, Bar
B187M, B196/B196M, B283/B283M, B301/B301M, B371/
and Shapes
B371M, B411/B411M, B441, B453/B453M, B455, B570,
B124/B124M Specification for Copper and Copper Alloy
B870, B927/B927M, B929, B967/B967M, B974/B974M, and
Forging Rod, Bar, and Shapes
B981/B981M to the extent referenced therein.
B138/B138M SpecificationforManganeseBronzeRod,Bar,
1.2 The chemical composition, physical and mechanical
and Shapes
properties, and all other requirements not included in this
B139/B139M Specification for Phosphor Bronze Rod, Bar,
specification are prescribed in the product specification.
and Shapes
1.3 Units—The values stated in either SI units or inch-
B140/B140M Specification for Copper-Zinc-Lead (Red
pound units are to be regarded separately as standard. The
Brass or Hardware Bronze) Rod, Bar, and Shapes
values stated in each system are not necessarily exact equiva-
B150/B150M Specification forAluminum Bronze Rod, Bar,
lents; therefore, to ensure conformance with the standard, each
and Shapes
system shall be used independently of the other, and values
B151/B151M Specification for Copper-Nickel-Zinc Alloy
from the two systems shall not be combined.
(Nickel Silver) and Copper-Nickel Rod and Bar
1.3.1 Within the text the SI values are given in brackets. B154 Test Method for Mercurous Nitrate Test for Copper
Alloys
1.4 This standard does not purport to address all of the
B187/B187M Specification for Copper, Bus Bar, Rod, and
safety concerns, if any, associated with its use. It is the
Shapes and General Purpose Rod, Bar, and Shapes
responsibility of the user of this standard to establish appro-
B193 Test Method for Resistivity of Electrical Conductor
priate safety, health, and environmental practices and deter-
Materials
mine the applicability of regulatory limitations prior to use.
B194 Specification for Copper-BerylliumAlloy Plate, Sheet,
1.5 This international standard was developed in accor-
Strip, and Rolled Bar
dance with internationally recognized principles on standard-
B196/B196M SpecificationforCopper-BerylliumAlloyRod
ization established in the Decision on Principles for the
and Bar
Development of International Standards, Guides and Recom-
B283/B283M Specification for Copper and Copper-Alloy
mendations issued by the World Trade Organization Technical
Die Forgings (Hot-Pressed)
Barriers to Trade (TBT) Committee.
B301/B301M Specification for Free-Cutting Copper Rod,
Bar, Wire, and Shapes
B371/B371M Specification for Copper-Zinc-Silicon Alloy
1
ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper
Rod
and CopperAlloysandisthedirectresponsibilityofSubcommittee B05.02 on Rod,
Bar, Wire, Shapes and Forgings.
Current edition approved April 1, 2020. Published April 2020. Originally
3
approved in 1951. Last previous edition approved in 2019 as B249/B249M–19a. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
DOI: 10.1520/B0249_B0249M–20. contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
2
For ASME Boiler and Pressure Vessel Code applications see related Specifi- Standards volume information, refer to the standard’s Document Summary page on
cations SB-249 in Section II of that Code. the ASTM website.
*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

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B249/B249M−20
B411/B411M Specification for Copper-Nickel-SiliconAlloy the Determination of Chemical Composition
Rod and Bar E290 Test Methods for Bend Testing of Material for Ductil-
B441 Specification for Copper-Cobalt-Beryllium, Copper- ity
Nickel-Beryllium, and Copper-Nickel-
...

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: B249/B249M − 19a B249/B249M − 20
Standard Specification for
General Requirements for Wrought Copper and Copper-
1
Alloy Rod, Bar, Shapes and Forgings
This standard is issued under the fixed designation B249/B249M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
2
1.1 This specification establishes the general requirements common to wrought copper and copper alloy rod, bar, shapes, and
forgings which shall apply to Specifications B16/B16M, B21/B21M, B98/B98M, B124/B124M, B138/B138M, B139/B139M,
B140/B140M, B150/B150M, B151/B151M, B187/B187M, B196/B196M, B283/B283M, B301/B301M, B371/B371M, B411/
B411M, B441, B453/B453M, B455, B570, B870, B927/B927M, B929, B967/B967M, B974/B974M, and B981/B981M to the
extent referenced therein.
1.2 The chemical composition, physical and mechanical properties, and all other requirements not included in this specification
are prescribed in the product specification.
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 are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used
independently of the other, and values from the two systems shall not be combined.
1.3.1 Within the text the SI values are given in brackets.
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
3
2.1 ASTM Standards:
B16/B16M Specification for Free-Cutting Brass Rod, Bar and Shapes for Use in Screw Machines
B21/B21M Specification for Naval Brass Rod, Bar, and Shapes
B98/B98M Specification for Copper-Silicon Alloy Rod, Bar and Shapes
B124/B124M Specification for Copper and Copper Alloy Forging Rod, Bar, and Shapes
B138/B138M Specification for Manganese Bronze Rod, Bar, and Shapes
B139/B139M Specification for Phosphor Bronze Rod, Bar, and Shapes
B140/B140M Specification for Copper-Zinc-Lead (Red Brass or Hardware Bronze) Rod, Bar, and Shapes
B150/B150M Specification for Aluminum Bronze Rod, Bar, and Shapes
B151/B151M Specification for Copper-Nickel-Zinc Alloy (Nickel Silver) and Copper-Nickel Rod and Bar
B154 Test Method for Mercurous Nitrate Test for Copper Alloys
B187/B187M Specification for Copper, Bus Bar, Rod, and Shapes and General Purpose Rod, Bar, and Shapes
B193 Test Method for Resistivity of Electrical Conductor Materials
B194 Specification for Copper-Beryllium Alloy Plate, Sheet, Strip, and Rolled Bar
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, 2019April 1, 2020. Published November 2019April 2020. Originally approved in 1951. Last previous edition approved in 2019 as
B249/B249M–19.–19a. DOI: 10.1520/B0249_B0249M–19A.10.1520/B0249_B0249M–20.
2
For ASME Boiler and Pressure Vessel Code applications see related Specifications SB-249 in Section II of that Code.
3
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.
*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 ----------------------
B249/B249M − 20
B196/B196M Specification for Copper-Beryllium Alloy Rod and Bar
B283/B283M Specification for Copper and Copper-Alloy Die Forgings (Hot-Pressed)
B301/B301M Specification for
...