ASTM E1306-07
(Practice)Standard Practice for Preparation of Metal and Alloy Samples by Electric Arc Remelting for the Determination of Chemical Composition
Standard Practice for Preparation of Metal and Alloy Samples by Electric Arc Remelting for the Determination of Chemical Composition
SIGNIFICANCE AND USE
This sampling practice is useful for converting chips, turnings, and wires taken from ingots or other solid materials into a homogeneous solid sample suitable for direct excitation on an optical emission or X-ray fluorescence spectrometer. The resultant button may itself be chipped to provide samples for plasma emission, atomic absorption, and wet chemical analysis.
This practice has been used extensively for the preparation of zirconium, zirconium alloy, titanium, and titanium alloy materials, and is applicable to other reactive, refractory, ferrous and nonferrous alloys, such as cobalt, cobalt alloys, columbium (niobium), nickel, nickel alloys, stainless steels, tantalum, tool steels, and tungsten.
SCOPE
1.1 This practice covers the preparation of solid samples of reactive and refractory metals and alloys by electric arc remelting. The samples for melting may be in the form of chips, turnings, wires, and sponge. Powdered metals need to be compacted before melting.
1.1.1 This practice is also suitable for preparation of solid samples of other metals, such as steels, stainless steels, tool steels, nickel, nickel alloys, cobalt, and cobalt alloys by electric arc remelting.
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. Specific hazard statements are given in Section 9.
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Designation:E1306–07
Standard Practice for
Preparation of Metal and Alloy Samples by Electric Arc
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Remelting for the Determination of Chemical Composition
This standard is issued under the fixed designation E1306; 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 5. Significance and Use
1.1 This practice covers the preparation of solid samples of 5.1 This sampling practice is useful for converting chips,
reactive and refractory metals and alloys by electric arc turnings, and wires taken from ingots or other solid materials
remelting. The samples for melting may be in the form of into a homogeneous solid sample suitable for direct excitation
chips, turnings, wires, and sponge. Powdered metals need to be on an optical emission or X-ray fluorescence spectrometer.The
compacted before melting. resultant button may itself be chipped to provide samples for
1.1.1 This practice is also suitable for preparation of solid plasma emission, atomic absorption, and wet chemical analy-
samples of other metals, such as steels, stainless steels, tool sis.
steels,nickel,nickelalloys,cobalt,andcobaltalloysbyelectric 5.2 This practice has been used extensively for the prepa-
arc remelting. ration of zirconium, zirconium alloy, titanium, and titanium
1.2 This standard does not purport to address all of the alloy materials, and is applicable to other reactive, refractory,
safety concerns, if any, associated with its use. It is the ferrous and nonferrous alloys, such as cobalt, cobalt alloys,
responsibility of the user of this standard to establish appro- columbium (niobium), nickel, nickel alloys, stainless steels,
priate safety and health practices and determine the applica- tantalum, tool steels, and tungsten.
bility of regulatory limitations prior to use. Specific hazard
6. Interferences
statements are given in Section 9.
6.1 Test samples of known composition shall be used to
2. Referenced Documents
determine if there is any selective volatilization or segregation
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2.1 ASTM Standards: of the impurity elements. Elements known to volatilize are
E135 Terminology Relating to Analytical Chemistry for bismuth, cadmium, chlorine, lead, magnesium, sodium, tellu-
Metals, Ores, and Related Materials rium, thallium, uranium, and zinc. Other elements that may
change in content are the interstitial gases, oxygen, nitrogen,
3. Terminology
and hydrogen, plus carbon, which may be added due to the
3.1 Definitions—For definitions of terms used in this prac- graphite anode.Atungsten anode may be substituted if carbon
tice, refer to Terminology E135.
pickup is a concern. Tungsten contamination may occur if this
electrode is used. Copper contamination also may be intro-
4. Summary of Practice
duced from the melting crucible.
4.1 Metal chips, turnings, or wires are melted into a button
1 1 7. Apparatus
approximately 1 ⁄4 in. in diameter and approximately ⁄4-in.
thick using an electric arc furnace.The action of the arc creates
7.1 ElectricArc Remelt Furnace—An apparatus suitable for
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agitation and mixing of the molten metal which produces a this practice is shown schematically in Fig. 1. It shall be
homogeneous sample.
equipped as follows:
7.1.1 Water-Cooled Upper Housing (1), approximately 6-in.
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diameter and 6 ⁄4 in. high, and having a smooth, flat sealing
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This practice is under the jurisdiction of ASTM Committee E01 on Analytical
surface.
Chemistry for Metals, Ores and Related Materials and is the direct responsibility of
Subcommittee E01.20 on Fundamental Practices.
Current edition approved Jan. 15, 2007. Published January 2007. Originally
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approved in 1989. Last previous edition approved in 2004 as E1306 – 94 (2004). The sole source of supply of the apparatus known to the committee at this time
DOI: 10.1520/E1306-07. is a commercially available unit, including expendable parts, manufactured by
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or Cianflone Scientific Instruments Corp., Pittsburgh, PA. If you are aware of
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM alternative suppliers, please provide this information to ASTM International
Standards volume information, refer to the standard’s Document Summary page on Headquarters.Your comments will receive careful consideration at a meeting of the
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the ASTM website. responsible technical committee, which you may attend.
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E1306–07
8. Reagents and Materials
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