ASTM B206/B206M-12(2017)

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: B206/B206M −12 (Reapproved 2017)
Standard Specification for
Copper-Nickel-Zinc (Nickel Silver) Wire and Copper-Nickel
Alloy Wire
This standard is issued under the fixed designation B206/B206M; 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
2.1 ASTM Standards:
1.1 This specification establishes the requirements for wire
B250/B250M Specification for General Requirements for
inround,hexagonal,octagonal,rectangular,andsquareformof
Wrought Copper Alloy Wire
UNSAlloy Nos. C71000, C74500, C75200, C75700, C76400,
B601 Classification forTemper Designations for Copper and
C77000, and C79200.
Copper Alloys—Wrought and Cast
1.2 Thisspecificationisgeneralinthattheproductisusedin
B846 Terminology for Copper and Copper Alloys
many applications where the requirements are too particular to
B950 Guide for Editorial Procedures and Form of Product
be specified by standard test results.
Specifications for Copper and Copper Alloys
1.2.1 For particular or critical applications it is advisable for
E8/E8M Test Methods for Tension Testing of Metallic Ma-
the purchaser to submit samples or drawings to the manufac-
terials
turer to secure an adjustment of anneal or temper to suit the
E62 Test Methods for Chemical Analysis of Copper and
application for which the product is intended. 3
CopperAlloys (Photometric Methods) (Withdrawn 2010)
1.3 The following information is intended to assist the E112 Test Methods for Determining Average Grain Size
purchaser in the application of this specification:
E478 Test Methods for ChemicalAnalysis of CopperAlloys
1.3.1 For most general applications—UNS Alloy Nos.
3. General Requirements
C71000, C74500, C75200, and C75700.
3.1 The following sections of Specification B250/B250M
1.3.2 For hard or spring tempers—UNSAlloy Nos. C76400
constitute a part of this specification:
and C77000.
3.1.1 Terminology,
1.3.3 For ease of machining—UNS Alloy No. C79200.
3.1.2 Materials and Manufacture,
1.4 Units—Values stated in either inch-pound units or SI
3.1.3 Workmanship, Finish, and Appearance,
units are to be regarded separately as standard. Within the text,
3.1.4 Sampling
SI units are shown in brackets. The values stated in each
3.1.5 Number of Tests and Retests,
system may not be exact equivalents; therefore, each system
3.1.6 Specimen Preparation,
shall be used independently of the other. Combining values
3.1.7 Test Methods,
from the two systems may result in nonconformance with the
3.1.8 Significance of Numerical Limits,
standard.
3.1.9 Inspection,
3.1.10 Rejection and Rehearing,
1.5 This international standard was developed in accor-
dance with internationally recognized principles on standard- 3.1.11 Certification,
3.1.12 Test Reports (Mill),
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom- 3.1.13 Packaging and Package Marking, and
3.1.14 Supplemental Requirements.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
3.2 In addition, when a section with a title identical to one
of those referenced in 3.1 appears in this specification, it
1 2
ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper For referenced ASTM standards, visit the ASTM website, www.astm.org, or
and CopperAlloys and is the direct responsibility of Subcommittee B05.02 on Rod, contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Bar, Wire, Shapes and Forgings. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved April 1, 2017. Published April 2017. Originally the ASTM website.
approvedin1946.Lastpreviouseditionapprovedin2012asB206/B206M-12.DOI: The last approved version of this historical standard is referenced on
10.1520/B0206_B0206M-12R17. www.astm.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
B206/B206M − 12 (2017)
contains additional requirements that supplement those which specified in the ordering information:
appear in Specification B250/B250M. 7.1.1 These composition limits do not preclude the presence
of other elements. When required, limits may be established
4. Terminology
and analysis required for unnamed elements by agreement
between the supplier and the purchaser.
4.1 For the definition of general terms related to copper and
copper alloys, refer to Terminology B846.
7.2 For UNS No. C71000, in which copper is listed as the
remainder, the copper content may be determined as the
5. Ordering Information
difference between the sum of results for all elements analyzed
5.1 Include the following specified choices when placing
and 100 %.
orders for products under this specification, as applicable:
7.3 For those copper alloys in which zinc is specified as the
5.1.1 ASTM designation and year of issue,
remainder, either copper or zinc may be taken as the difference
5.1.2 Copper Alloy UNS No. (Section 1),
between the sum of all elements analyzed and 100 %. When
5.1.3 Temper designation (Section 8),
copper is so determined, that difference value shall conform to
5.1.4 Quantity—Total weight or length or number of pieces
the requirements given in Table 1.
of each temper, form, or alloy.
7.4 WhenallelementslistedinTable1fortheCopperAlloy
5.1.5 Dimensions—Diameter, distance between parallel
UNS No. prescribed in the ordering information are
surfaces,
determined, the sum of results shall be 99.5 % minimum.
5.1.6 How furnished—specific lengths, coils, reels, and so
forth, and
8. Temper
5.1.7 Intended application.
8.1 Tempers, as defined in Classification B601, available to
5.2 The following options are available but may not be
this specification are as prescribed in Table 2, Table 3, and
included unless specified at the time of placing of the order,
Table 4 in the various alloys and sizes listed.
when required:
5.2.1 Heat identification or traceability details, 8.2 Hexagonal, octagonal, rectangular, and square wire are
5.2.2 Certification (Specification B250/B250M), and normally furnished in H01 (quarter-hard) temper.
5.2.3 Mill Test Reports (Specification B250/B250M).
8.3 UNS Alloy Nos. C76400 and C77000 are normally
5.2.4 If product is purchased for agencies of the U.S.
furnished in the H04 (hard), H08 (spring), or H14 (extra
Government (Specification B250/B250M).
spring) tempers.
6. Material and Manufacture
9. Grain Size for Annealed Wire
6.1 Material—The material shall be made from cast or
9.1 Product furnished in the OS (annealed) condition shall
wrought billets, logs or rods of Copper Alloy UNS Nos.
conform to the requirements specified in Table 4 for the temper
C71000, C74500, C75200, C75700, C76400, C77000, or
and Copper Alloy UNS No. designated in the ordering
C79200, and shall be of such soundness and structure as to
information, when tested in accordance with Test Methods
enable them to be processed into the desired product.
E112.
6.1.1 When s
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