ASTM E2575-19

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: E2575 − 19
Standard Test Method for
Determination of Oxygen in Copper and Copper Alloys by
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Inert Gas Fusion
This standard is issued under the fixed designation E2575; 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.
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1. Scope 2.2 IEEE/ASTM Standard:
IEEE/ASTM SI 10 American National Standard for Use of
1.1 This test method covers the determination of oxygen in
theInternationalSystemofUnits(SI):TheModernMetric
copper and copper alloys from 0.00035 % to 0.090 %.
System
1.2 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 Definitions—For definitions of terms used in this test
priate safety, health, and environmental practices and deter-
method, refer to Terminology E135.
mine the applicability of regulatory limitations prior to use.
1.3 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 This test method is intended for use with commercially
Development of International Standards, Guides and Recom- available inert gas fusion determinators.
mendations issued by the World Trade Organization Technical
4.2 The test specimen is fused in a graphite crucible under
Barriers to Trade (TBT) Committee.
a flowing inert gas stream of argon (Ar), helium (He), or
nitrogen (N ) at a temperature sufficient to release oxygen.
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2. Referenced Documents
Oxygen from the specimen combines with carbon from the
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2.1 ASTM Standards:
crucible to form carbon monoxide (CO).The detector output is
E29 Practice for Using Significant Digits in Test Data to
converted to the mass fraction of oxygen in the specimen using
Determine Conformance with Specifications
a previously established calibration. Depending on the instru-
E50 Practices for Apparatus, Reagents, and Safety Consid-
ment design, CO is oxidized to carbon dioxide (CO ) or left as
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erations for Chemical Analysis of Metals, Ores, and
CO and swept by the inert gas stream into an infrared detector.
Related Materials
4.3 In a typical instrument based on infrared detection the
E135 Terminology Relating to Analytical Chemistry for
evolved gases are swept into an infrared cell through which
Metals, Ores, and Related Materials
infrared energy is transmitted. The CO in the gas stream
E882 Guide for Accountability and Quality Control in the
absorbs some of the transmitted infrared energy and the
Chemical Analysis Laboratory
decrease in the energy reaching the detector is processed and
E1019 Test Methods for Determination of Carbon, Sulfur,
displayed directly as percent oxygen. Some instruments oxi-
Nitrogen, and Oxygen in Steel, Iron, Nickel, and Cobalt
dize the CO to CO , which is subsequently measured by an
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Alloys by Various Combustion and Inert Gas Fusion
infrared cell designed to measure CO .
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Techniques
E1601 Practice for Conducting an Interlaboratory Study to
5. Significance and Use
Evaluate the Performance of an Analytical Method
5.1 This test method is primarily intended as a referee test
forcompliancewithcompositionalspecifications.Itisassumed
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This test method is under the jurisdiction of ASTM Committee E01 on
that all who use this test method will be trained analysts,
Analytical Chemistry for Metals, Ores, and Related Materials and is the direct
responsibility of Subcommittee E01.05 on Cu, Pb, Zn, Cd, Sn, Be, Precious Metals, capable of performing common laboratory procedures skill-
their Alloys, and Related Metals.
fully and safely. It is expected that work will be performed in
Current edition approved June 15, 2019. Published August 2019. Originally
a properly equipped laboratory.
approved in 2008. Last previous edition approved in 2008 as E2575–08, which was
withdrawn January 2017 and reinstated in June 2019. DOI: 10.1520/E2575-19.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or 6. Interferences
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
6.1 The elements usually present in copper and its alloys do
Standards volume information, refer to the standard’s Document Summary page on
theASTM website. not interfere.
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