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This specification establishes the requirements for high conductivity, tough-pitch, copper wire bars, cakes, slabs, billets, ingots, and ingot bars. Copper wires under this specification include UNS C113000, C11400, C11500 and C11600, C12000, C12200, C12300, and C14500. The maximum values of mass resistivity for wire bars, cakes, slabs, and billets, for electrical use and for other uses, shall conform to the specified requirements. Samples for the electrical resistivity test of electrolytic copper, electrorefined copper, electrowon copper, and fire-refined copper shall be fabricated into a rod. The external oxide shall be removed, the rod cold drawn into a wire of a specific diameter, and cut into sampling lengths. The resulting specimen shall be annealed and quickly cooled in an inert atmosphere. The mean resistivity shall be determined as the mean of the observations from the test on the wires.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
Significance and Use
14.1 Calculated values shall be rounded to the specified number of places in accordance with Practice .
1.1 This specification establishes the requirements for high conductivity, tough-pitch, copper wire bars, cakes, slabs, billets, ingots, and ingot bars.
1.2 Copper under this specification corresponds to the designations “ETP” (UNS C11000) and “FRHC” (UNS C11020) as shown in Classification . These coppers may also be used to produce coppers corresponding to the following:
Copper UNS No.
C11300, C11400, C11500, and C11600
1.3 Although this specification includes certain UNS designations as described in Practice , these designations are for cross reference only and are not specification requirements. Therefore, in case of conflict, this ASTM specification shall govern.
1.4 Units—The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4.1 Exception—Electrical resistivity is expressed in SI units.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
B193 Test Method for Resistivity of Electrical Conductor Materials
B224 Classification of Coppers
B846 Terminology for Copper and Copper Alloys
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E53 Test Method for Determination of Copper in Unalloyed Copper by Gravimetry
E255 Practice for Sampling Copper and Copper Alloys for the Determination of Chemical Composition
E478 Test Methods for Chemical Analysis of Copper Alloys
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
ICS Number Code 77.150.30 (Copper products)
UNSPSC Code 26121517(Copper wire); 30262200(Copper bars)
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ASTM B5-16, Standard Specification for High Conductivity Tough-Pitch Copper Refinery Shapes, ASTM International, West Conshohocken, PA, 2016, www.astm.orgBack to Top