ASTM E2792-21

Standard Test Method for Determination of Hydrogen in Aluminum and Aluminum Alloys by Inert Gas Fusion

SIGNIFICANCE AND USE
5.1 This test method is intended for the routine testing of aluminum and aluminum alloys to quantitatively determine the mass fraction of hydrogen in aluminum and aluminum alloys. It is not intended to verify compliance with compositional specifications because of the lack of certified reference materials. It is assumed that all who use this test method will be trained analysts capable of performing common laboratory procedures skillfully and safely. It is expected that the work will be performed in a properly equipped laboratory.
SCOPE
1.1 This test method applies to the determination of hydrogen in aluminum and aluminum alloys in mass fractions from 0.05 mg/kg to 1 mg/kg.  
1.2 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.  
1.3 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

• Status: Published
• Publication Date: 30-Nov-2021
• ICS: 77.120.10 - Aluminium and aluminium alloys
• Technical Committee: E01 - Analytical Chemistry for Metals, Ores, and Related Materials
• Drafting Committee: E01.04 - Aluminum and Magnesium

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: E2792 − 21
Standard Test Method for
Determination of Hydrogen in Aluminum and Aluminum
1
Alloys by Inert Gas Fusion
This standard is issued under the fixed designation E2792; 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.
1. Scope ment and Evaluation of Methods for Chemical Analysis
3
(Withdrawn 2016)
1.1 This test method applies to the determination of hydro-
E2857 Guide for Validating Analytical Methods
gen in aluminum and aluminum alloys in mass fractions from
0.05 mg/kg to 1 mg/kg.
3. Terminology
1.2 This standard does not purport to address all of the
3.1 Definitions—For definitions of terms used in this test
safety concerns, if any, associated with its use. It is the
method, see Terminology E135 and Practice E1914.
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
4. Summary of Test Method
mine the applicability of regulatory limitations prior to use.
4.1 The specimen, contained in a high-purity graphite
1.3 This international standard was developed in accor-
crucible, is heated to just below the melting point to drive off
dance with internationally recognized principles on standard-
the surface hydrogen.The sample is then heated to just beyond
ization established in the Decision on Principles for the
the melting point under a flowing carrier gas atmosphere.
Development of International Standards, Guides and Recom-
Hydrogen present in the sample is released as molecular
mendations issued by the World Trade Organization Technical
hydrogenintotheflowinggasstream.Thereleasedhydrogenis
Barriers to Trade (TBT) Committee.
separated from other liberated gases such as carbon monoxide
(CO) and subsequently measured in a thermal conductivity cell
2. Referenced Documents
(Note 1).
2
2.1 ASTM Standards:
4.2 Calibration is made using gas dosing with either helium
E29 Practice for Using Significant Digits in Test Data to
orhydrogenorreferencematerialsofknownhydrogencontent.
Determine Conformance with Specifications
E50 Practices for Apparatus, Reagents, and Safety Consid-
4.3 This test method is written for use with commercial
erations for Chemical Analysis of Metals, Ores, and
analyzers equipped to carry out the above operations automati-
Related Materials cally.
E135 Terminology Relating to Analytical Chemistry for
NOTE 1—The current ILS data was gathered from technology described
Metals, Ores, and Related Materials
in this test method. Other units and detection systems exist that are not
E177 Practice for Use of the Terms Precision and Bias in
represented here due to availability during the ILS. This test method
provides guidance for appropriate use of these units, but users of other
ASTM Test Methods
technologies should perform in-house method validation per Guide
E691 Practice for Conducting an Interlaboratory Study to
E2857.
Determine the Precision of a Test Method
E1914 Practice for Use of Terms Relating to the Develop-
5. Significance and Use
5.1 This test method is intended for the routine testing of
1 aluminum and aluminum alloys to quantitatively determine the
This test method is under the jurisdiction of ASTM Committee E01 on
Analytical Chemistry for Metals, Ores, and Related Materials and is the direct mass fraction of hydrogen in aluminum and aluminum alloys.
responsibility of Subcommittee E01.04 on Aluminum and Magnesium.
It is not intended to verify compliance with compositional
Current edition approved Dec. 1, 2021. Published December 2021. Originally
specifications because of the lack of certified reference mate-
approved in 2011. Last previous edition approved in 2013 as E2792 – 13. DOI:
rials. It is assumed that all who use this test method will be
10.1520/E2792-21.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on The last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E2792 − 21
trained analysts capable of performing common laboratory 9. Hazards
procedures skillfully and safely. It is expected that the work
9.1 Refer to Practices E50 for potential hazards
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: E2792 − 13 E2792 − 21
Standard Test Method for
Determination of Hydrogen in Aluminum and Aluminum
1
Alloys by Inert Gas Fusion
This standard is issued under the fixed designation E2792; 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.
1. Scope
1.1 This test method applies to the determination of hydrogen in aluminum and aluminum alloys in concentrations mass fractions
from 0.05 mg/kg to 1 mg/kg.
1.2 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.3 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.
2. Referenced Documents
2
2.1 ASTM Standards:
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E50 Practices for Apparatus, Reagents, and Safety Considerations for Chemical Analysis of Metals, Ores, and Related Materials
E135 Terminology Relating to Analytical Chemistry for Metals, Ores, and Related Materials
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
E1914 Practice for Use of Terms Relating to the Development and Evaluation of Methods for Chemical Analysis (Withdrawn
3
2016)
E2857 Guide for Validating Analytical Methods
3. Terminology
3.1 Definitions—For definitions of terms used in this test method, see Terminology E135 and Practice E1914.
4. Summary of Test Method
4.1 The specimen, contained in a high-purity graphite crucible, is heated to just below the melting point to drive off the surface
hydrogen. The sample is then heated to just beyond the melting point under a flowing carrier gas atmosphere. Hydrogen present
1
This test method is under the jurisdiction of ASTM Committee E01 on Analytical Chemistry for Metals, Ores, and Related Materials and is the direct responsibility of
Subcommittee E01.04 on Aluminum and Magnesium.
Current edition approved April 1, 2013Dec. 1, 2021. Published June 2013December 2021. Originally approved in 2011. Last previous edition approved in 20112013 as
E2792E2792 – 13.-11. DOI: 10.1520/E2791-13.10.1520/E2792-21.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
The last approved version of this historical standard is referenced on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E2792 − 21
in the sample is released as molecular hydrogen into the flowing gas stream. The released hydrogen is separated from other
liberated gases such as carbon monoxide (CO) and subsequently measured in a thermal conductivity cell.cell (Note 1).
4.2 Calibration is made using gas dosing with either helium or hydrogen or reference materials of known hydrogen content.
4.3 This test method is written for use with commercial analyzers equipped to carry out the above operations automatically.
NOTE 1—The current ILS data was gathered from technology described in this test method. Other units and detection systems exist that are not represented
here due to availability during the ILS. This test method provides guidance for appropriate use of these units, but users of other technologies should
perform in-house method validation per Guide E2857.
5. Significance and Use
5.1 This test method is intended for the routine testing of aluminum and aluminum alloys to qualitativelyquantitatively determine
the concentration mass fraction of hydrogen in aluminum and aluminum alloys. It is not intended to verify compliance with
compositional specifications because of the lack of certified reference mate
...