ASTM E1447-04
(Test Method)Standard Test Method for Determination of Hydrogen in Titanium and Titanium Alloys by the Inert Gas Fusion Thermal Conductivity Method
Standard Test Method for Determination of Hydrogen in Titanium and Titanium Alloys by the Inert Gas Fusion Thermal Conductivity Method
SCOPE
1.1 This test method applies to the determination of hydrogen in titanium and titanium alloys in concentrations from 0.0010 to 0.0200 %.
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 and health practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see Section 8.
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Standards Content (Sample)
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Designation:E1447–04
Standard Test Method for
Determination of Hydrogen in Titanium and Titanium Alloys
1
by the Inert Gas Fusion Thermal Conductivity Method
This standard is issued under the fixed designation E 1447; 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.
1. Scope 4. Significance and Use
1.1 This test method applies to the determination of hydro- 4.1 This test method is intended to test for compliance with
gen in titanium and titanium alloys in concentrations from compositionalspecifications.Itisassumedthatallwhousethis
0.0010 to 0.0200 %. test method will be trained analysts capable of performing
1.2 This standard does not purport to address all of the common laboratory procedures skillfully and safely. It is
safety concerns, if any, associated with its use. It is the expected that the work will be performed in a properly
responsibility of the user of this standard to establish appro- equipped laboratory.
priate safety and health practices and determine the applica-
5. Interferences
bility of regulatory limitations prior to use. For specific
precautionary statements, see Section 8. 5.1 The elements ordinarily present in titanium and its
alloys do not interfere.
2. Referenced Documents
2
6. Apparatus
2.1 ASTM Standards:
6.1 Fusion and Measurement Apparatus—Automatic hy-
C 696 Test Methods for Chemical, Mass Spectrometeric,
and Spectrochemical Analysis of Nuclear-Grade Uranium drogen determinator, consisting of an electrode furnace or
induction furnace; analytical gas stream impurity removal
Dioxide Powders and Pellets
E50 Practices forApparatus, Reagents, and Safety Consid- systems; thermal conductivity cell hydrogen measurement
system; and auxiliary purification systems (Note 1).
erations for Chemical Analysis of Metals, Ores, and
Related Materials
NOTE 1—The apparatus and analysis system have been previously
E 173 Practice for Conducting Interlaboratory Studies of
described in Test Methods C 696, Sections 142 to 149. Several models of
Methods for Chemical Analysis of Metals
commercial analyzers are available and presently in use in industry. Each
has its own unique design characteristics and operational requirements.
3. Summary of Test Method
Consult the instrument manufacturer’s instructions for operational details.
3.1 The specimen, contained in a small, single-use graphite
6.2 Graphite Crucibles—The crucibles are machined from
crucible, is fused under a flowing carrier gas atmosphere.
high-purity graphite. Use the size crucibles recommended by
Hydrogen present in the sample is released as molecular
the manufacturer of the instrument.
hydrogen into the flowing gas stream. The hydrogen is sepa-
6.3 Crucible Tongs—Capable of handling recommended
rated from other liberated gases such as carbon monoxide and
crucibles.
finally measured in a thermal conductivity cell.
7. Reagents and Materials
3.2 This test method is written for use with commercial
analyzers equipped to carry out the above operations automati-
7.1 Acetone, low-residue.
cally and is calibrated using standard samples of known
7.2 Sodium Hydroxide on Clay Base, commonly known as
hydrogen content.
Ascarite II.
7.3 High-Purity Carrier Gas (99.99 %)—Argon, nitrogen
(Note 2).
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This test method is under the jurisdiction of ASTM Committee E01 on
Analytical Chemistry for Metals, Ores, and Related Materials and is the direct
NOTE 2—Carrier gases vary by instrument model and include both
responsibility of Subcommittee E01.06 on Ti, Zr, W, Mo, Ta, Nb, Hf.
high-purity argon and nitrogen. Consult instrument manufacturer’s in-
Current edition approved Dec. 1, 2004. Published January 2005. Originally
structions for proper gas selection.
approved in 1992. Last previous editon approved in 2001 as E 1447–01.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
7.4 High-Purity Tin Metal (Low Hydrogen)—Use the purity
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
specified by the instrument manufacturer.
Standards volume information, refer to the standard’s Document Summary page on
7.5 Magnesium Perchlorate, Anhydrone.
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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E1447–04
7.6 Molecular Sieve—Characteristics specified by the in- 11.2.4 Enter the average blank value in the appropriate
strument manufacturer. mechanism of the analyzer (Note 6), and refer to the manufac-
7.7 Schutze Reagent—Iodine pentoxide over silica gel. turer’s instruction. This mechanism wil
...
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