ASTM B206/B206M-97(2002)

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Designation: B 206/B206M – 97 (Reapproved 2002)
Standard Specification for
Copper-Nickel-Zinc (Nickel Silver) Wire and Copper-Nickel
Alloy Wire
This standard is issued under the fixed designation B 206/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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope * E 62 Test Methods for Chemical Analysis of Copper and
Copper Alloys (Photometric Methods)
1.1 This specification establishes the requirements for wire
E 112 Test Methods for Determining Average Grain Size
inround,hexagonal,octagonal,rectangular,andsquareformof
E 478 Test Methods for Chemical Analysis of Copper
UNSAlloy Nos. C71000, C74500, C75200, C75700, C76400,
Alloys
C77000, and C79200.
1.2 Thisspecificationisgeneralinthattheproductisusedin
3. Terminology
many applications where the requirements are too particular to
3.1 For the definition of general terms related to copper and
be specified by standard test results.
copper alloys, refer to Terminology B 846.
1.2.1 For particular or critical applications it is advisable for
3.2 Description of Terms Specific to This Specification:
the purchaser to submit samples or drawings to the manufac-
3.2.1 unaided eye—permits the use of corrective optical
turer to secure an adjustment of anneal or temper to suit the
lenses necessary to obtain normal vision.
application for which the product is intended.
1.3 The following information is intended to assist the
4. Ordering Information
purchaser in the application of this specification:
4.1 Include the following information when placing pur-
1.3.1 For most general applications—UNS Alloy Nos.
chase orders or contracts for products to this specification:
C71000, C74500, C75200, and C75700.
4.1.1 ASTM designation and year of issue,
1.3.2 For hard or spring tempers—UNSAlloy Nos. C76400
4.1.2 Copper Alloy UNS No. (Section 1),
and C77000.
4.1.3 Temper designation (Section 7),
1.3.3 For ease of machining—UNS Alloy No. C79200.
4.1.4 Quantity—Total weight or length or number of pieces
1.4 The values stated in inch-pound units or SI units are to
of each temper, form, or alloy.
be regarded separately as standard. Within the test, SI units are
4.1.5 Dimensions—Diameter, distance between parallel
shown in brackets. The values in each system are not exact
faces,
equivalents;therefore,eachsystemshallbeusedindependently
4.1.6 How furnished—specific lengths, coils, reels, and so
of the other. Combining values from the two systems may
forth, and
result in nonconformance with the specification.
4.1.7 When product is purchased for agencies of the U.S.
Government (B 250/B 250M).
2. Referenced Documents
4.2 The following options are available to this specification
2.1 ASTM Standards:
and should be specified in the contract or purchase order when
B 250/B 250M Specification for General Requirements for
2 required:
Wrought Copper-Alloy Wire
4.2.1 Heat identification or traceability details,
B 601 Classification for Temper Designations for Copper
4.2.2 Certification (B 250/B 250M), and
and Copper Alloy-Wrought and Cast
3 4.2.3 Mill Test Reports (B 250/B 250M).
E 8 Test Methods forTensionTesting of Metallic Materials
E 8M Test Methods for Tension Testing of Metallic Mate-
5. Material and Manufacture
rials [Metric]
5.1 Material—The material shall be made from cast or
wrought billets, logs or rods of Copper Alloy UNS Nos.
ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper
C71000, C74500, C75200, C75700, C76400, C77000, or
and CopperAlloys and is the direct responsibility of Subcommittee B05.02 on Rod,
C79200, and shall be of such soundness and structure as to
Bar, Wire, Shapes and Forgings.
enable them to be processed into the desired product.
Current edition approved Feb. 10, 1997. Published April 1997. Originally
published as B 206 – 46T. Last previous edition B 206 – 93.
Annual Book of ASTM Standards, Vol 02.01.
3 4
Annual Book of ASTM Standards, Vol 03.01. Annual Book of ASTM Standards, Vol 03.06.
*ASummary 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.
B 206/B206M – 97 (2002)
5.2 Manufacture—The product shall be manufactured by upon mechanical properties shall depend upon the tensile test
such hot-working, cold-working, straightening, coiling or reel- results obtained when tested in accordance with Test Methods
ing and annealing processing needed to produce a uniform
E 8 or E 8M.
wrought structure and obtain the finish properties specified in
8.1.2 Requirements for round wire in sizes smaller than
the purchase order or contract.
0.020 in. [0.50 mm] or larger than 0.250 in. [6.0 mm] shall be
by agreement between the supplier and the purchaser.
6. Chemical Composition
8.1.3 Requirements for wire other than round shall be by
6.1 The material composition shall conform to the require-
agreement between the supplier and the purchaser.
mentsofTable1fortheCopperAlloyUNSNo.specifiedinthe
ordering information:
9. Grain Size forAnnealed Wire
6.1.1 These compositional limits do not preclude the pres-
9.1 Product furnished in the OS (annealed) condition shall
ence of other elements. When required, limits may be estab-
conform to the requirements specified inTable 4 for the temper
lished and analysis required for unnamed elements by agree-
ment between the supplier and the purchaser. and Copper Alloy UNS No. designated in the ordering infor-
6.2 For UNS No. C71000, in which copper is listed as the mation, when tested in accordance with Test Methods E 112.
remainder, the copper content may be determined as the
9.1.1 Grainsizeshallbethestandardtempertestforproduct
difference between the sum of results for all elements analyzed
ordered in the OS (annealed) condition and acceptance or
and 100 %.
rejection based upon grain size shall depend upon the average
6.3 For those copper alloys in which zinc is specified as the
grain size test results obtained.
remainder, either copper or zinc may be taken as the difference
between the sum of all elements analyzed and 100 %. When
10. Performance Requirements
copper is so determined, that difference value shall conform to
10.1 Bending Requirements:
the requirements given in Table 1.
6.4 When all elements listed inTable 1 for the CopperAlloy 10.1.1 Wire of tempers H04 (hard), H08 (spring), and H14
UNS No. prescribed in the ordering information are deter- (extra spring) in sizes up to 0.250 in. [6 mm] inclusive, shall
mined, the sum of results shall be 99.5 % minimum. withstand being b
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