ASTM B1019-21
(Test Method)Standard Test Method for Determination of Surface Oxides on Copper Rod(for Electrical Purposes)
Standard Test Method for Determination of Surface Oxides on Copper Rod<brk/>(for Electrical Purposes)
SIGNIFICANCE AND USE
5.1 The copper oxides layer present on the surface of the copper rod has a detrimental effect on both final surface quality of the copper wire produced by cold drawing of the rod, and on the drawing process itself leading to wire breaks and excessive wear of the drawing dies. Thus, it is critical to use adequate cleaning techniques during the copper rod manufacturing process in order to limit the depth of the residual copper oxide layer on the finished rod, and it is necessary to have a method to accurately measure the copper oxide depth.
5.2 This test method is the most common test method used by continuous casting and rolling mills to measure the depth of residual surface oxides after the copper rod has been cleaned.
5.3 Applicability of the test method for any other purpose or product has not been evaluated. Suitability beyond the stated scope shall be evaluated before use.
SCOPE
1.1 This specification established a quantitative, laboratory conducted, electrolytic reduction method to determine the thickness of surface copper oxide films on copper rod produced to Specification B49 for further fabrication into electrical conductors.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 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.
1.4 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
Relations
Standards Content (Sample)
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: B1019 − 21
Standard Test Method for
Determination of Surface Oxides on Copper Rod
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(for Electrical Purposes)
This standard is issued under the fixed designation B1019; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope E691Practice for Conducting an Interlaboratory Study to
Determine the Precision of a Test Method
1.1 This specification established a quantitative, laboratory
E1601Practice for Conducting an Interlaboratory Study to
conducted, electrolytic reduction method to determine the
Evaluate the Performance of an Analytical Method
thicknessofsurfacecopperoxidefilmsoncopperrodproduced
E2480Practice for Conducting an Interlaboratory Study to
to Specification B49 for further fabrication into electrical
Determine the Precision of a Test Method with Multi-
conductors.
Valued Measurands
1.2 The values stated in SI units are to be regarded as
E2653Practice for Conducting an Interlaboratory Study to
standard. No other units of measurement are included in this
Determine Precision Estimates for a Fire Test Method
standard.
with Fewer Than Six Participating Laboratories
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3. Terminology
responsibility of the user of this standard to establish appro-
3.1 For definitions of related terms to copper and copper
priate safety, health, and environmental practices and deter-
alloys, refer to Terminology B846.
mine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accor-
4. Summary of Test Method
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
4.1 The thickness and type of unreduced oxide films re-
Development of International Standards, Guides and Recom-
maining on the surface of copper rod after cleaning shall be
mendations issued by the World Trade Organization Technical
determined by an electrolytic reduction method.This test shall
Barriers to Trade (TBT) Committee.
beperformedbyreducingthesurfacecopperoxide(s)tocopper
in an electrolytic cell. For a description of a similar, yet
2. Referenced Documents
alternative standard procedure to determine tarnish films on
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coupons exposed to environmental tests, see Refs. (1-5). As
2.1 The following documents in the current issue of the
shown by the schematic diagram in Fig. 1, the test sample
Annual Book of ASTM Standardsform a part of this specifica-
being tested acts as cathode with respect to an anode, which
tion to the extent referenced herein and define materials
shall be made from a platinum wire or an equivalent inert
suitable for use in rod manufacture.
2 electrode.CurrentshallbesuppliedfromaDCpowersupplyor
2.2 ASTM Standards:
a coulometer.Adiscussion on means to help improve accuracy
B49Specification for Copper Rod for Electrical Purposes
and repeatability of this test method will be found in Note
B846Terminology for Copper and Copper Alloys
X1.1.
D1193Specification for Reagent Water
E177Practice for Use of the Terms Precision and Bias in
4.2 Each of the copper oxides found on copper, namely
ASTM Test Methods
cuprous and cupric, are reduced sequentially to copper at
different reduction potentials, and the voltages are to be
recorded against time during the entire test. When the indi-
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This test method is under the jurisdiction ofASTM Committee B05 on Copper
vidual reactions between the oxides and hydrogen ions are
and Copper Alloys and is the direct responsibility of Subcommittee B05.06 on
complete, gaseous hydrogen is generated and may be seen as
Methods of Test.
little bubbles at the surface of the copper rod sample.
Current edition approved Oct. 1, 2021. Published December 2021. DOI:
10.1520/B1019-21.
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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
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Standards volume information, refer to the standard’s Document Summary page on The boldface numbers in parentheses refer to a list of references at the end of
the ASTM website. this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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B1019 − 21
FIG. 1 Schematic Illustration Showing Electrolytic Reduction Test Method
5.3 Applicabilityofthetestmethodforanyotherpurposeor
product h
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