ASTM B99/B99M-15(2021)

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.
Designation:B99/B99M −15 (Reapproved 2021)
Standard Specification for
Copper-Silicon Alloy Wire for General Applications
This standard is issued under the fixed designation B99/B99M; 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* 3. General Requirements
3.1 The following sections of Specification B250/B250M
1.1 This specification establishes the requirements for
constitute a part of this specification.
round, rectangular, and square wire for general applications
3.1.1 Terminology,
other than for electrical transmission cable. The alloys in-
3.1.2 Materials and Manufacture,
volved are UNS Nos. C65100 and C65500.
3.1.3 Workmanship, Finish, and Appearance,
1.2 Units—The values stated in either inch-pound units or
3.1.4 Sampling,
SI units are to be regarded separately as standard. Within the
3.1.5 Number of Tests and Retests,
text, SI units are shown in brackets. The values stated in each
3.1.6 Specimen Preparation,
system are not necessarily exact equivalents; therefore, to
3.1.7 Test Methods,
ensure conformance with the standard, each system shall be
3.1.8 Significance of Numerical Limits,
used independently of the other, and values from the two
3.1.9 Inspection,
systems shall not be combined.
3.1.10 Rejection and Rehearing,
1.3 This international standard was developed in accor-
3.1.11 Certification,
dance with internationally recognized principles on standard-
3.1.12 Test Report,
ization established in the Decision on Principles for the
3.1.13 Packaging and Package Marking, and
Development of International Standards, Guides and Recom-
3.1.14 Supplementary Requirements.
mendations issued by the World Trade Organization Technical
3.2 In addition, when a section with a title identical to that
Barriers to Trade (TBT) Committee.
referenced in 3.1, above, appears in this specification, it
contains additional requirements that supplement those appear-
2. Referenced Documents
ing in Specification B250/B250M.
2.1 ASTM Standards:
B250/B250M Specification for General Requirements for 4. Ordering Information
Wrought Copper Alloy Wire
4.1 Include the following specified choices when placing
E8/E8M Test Methods for Tension Testing of Metallic Ma-
orders for product under this specification, as applicable:
terials
4.1.1 ASTM designation and year of issue,
E62 Test Methods for Chemical Analysis of Copper and
4.1.2 Copper Alloy UNS No.;
CopperAlloys (Photometric Methods) (Withdrawn 2010)
4.1.3 Temper (Section 6),
E112 Test Methods for Determining Average Grain Size
4.1.4 Dimensions (diameter, distance between parallel
E478 Test Methods for ChemicalAnalysis of CopperAlloys
surfaces, width, and thickness);
4.1.5 How furnished (coil, reel, and so forth);
4.1.6 Total weight of each size; and
ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper
4.1.7 Intended application.
and CopperAlloys and is the direct responsibility of Subcommittee B05.02 on Rod,
Bar, Wire, Shapes and Forgings. 4.2 The following options are available but may not be
Current edition approved July 1, 2021. Published July 2021. Originally approved
included unless specified at the time of placing of the order
in 1935. Last previous edition approved in 2015 as B99/B99M–15. DOI: 10.1520/
when required:
B0099_B0099M-15R21.
2 4.2.1 Heat identification or traceability details (see 4.1.2 of
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Specification B250/B250M),
Standards volume information, refer to the standard’s Document Summary page on
4.2.2 Certification,
the ASTM website.
3 4.2.3 Test reports,
The last approved version of this historical standard is referenced on
www.astm.org. 4.2.4 Special packaging and package markings, and
*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
B99/B99M−15 (2021)
4.2.5 If product is purchased for agencies of the U.S. 8.1.1 Product furnished under this specification shall con-
government (see the Supplementary Requirements section of form to the tensile requirements prescribed in Table 2, when
Specification B250/B250M). tested in accordance with Test Methods E8/E8M.
5. Chemical Composition
9. Performance Requirements
5.1 The product shall conform to the chemical composition
9.1 Bending Requirements:
requirements in Table 1 for the Copper Alloy UNS No.
9.1.1 Wire in sizes up to 0.250 in. [6 mm] inclusive
designation specified in the ordering information.
produced to this specification shall be capable of being bent or
5.1.1 These composition limits do not preclude the presence
wrapped one full turn (360°) around its own diameter, or
ofotherelements.Byagreementbetweenthemanufacturerand
distance between parallel faces, without developing cracks or
the purchaser, limits may be established and analysis required
other flaws visible to the unaided eye on
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