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ASTM E1941-04

(Test Method)

Standard Test Method for Determination of Carbon in Refractory and Reactive Metals and Their Alloys

Standard Test Method for Determination of Carbon in Refractory and Reactive Metals and Their Alloys

SIGNIFICANCE AND USE
This test method is intended to test for compliance with compositional specifications. It is assumed that all who use this 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 carbon in refractory and reactive metals and their alloys in concentrations from 0.004 to 0.100 % (see Note 1).
Note 1—Actual instrument range might vary from manufacturer to manufacturer and according to sample size.
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. Specific precautionary statements are given in Section 8.

General Information

Status
Historical
Publication Date
30-Apr-2004
ICS
71.040.50 - Physicochemical methods of analysis
Technical Committee
E01 - Analytical Chemistry for Metals, Ores, and Related Materials
Drafting Committee
E01.06 - Ti, Zr, W, Mo, Ta, Nb, Hf, Re
Current Stage
Ref Project

Relations

Replaces
ASTM E1941-98 - Standard Test Method for Determination of Carbon in Refractory and Reactive Metals and Their Alloys
Effective Date
01-May-2004
Replaced By
ASTM E1941-10 - Standard Test Method for Determination of Carbon in Refractory and Reactive Metals and Their Alloys by Combustion Analysis
Effective Date
01-Dec-2010
Referred By
ASTM B988-18(2022) - Standard Specification for Powder Metallurgy (PM) Titanium and Titanium Alloy Structural Components
Effective Date
01-May-2004
Referred By
ASTM B338-17(2021) - Standard Specification for Seamless and Welded Titanium and Titanium Alloy Tubes for Condensers and Heat Exchangers
Effective Date
01-May-2004
Referred By
ASTM F3001-14(2021) - Standard Specification for Additive Manufacturing Titanium-6 Aluminum-4 Vanadium ELI (Extra Low Interstitial) with Powder Bed Fusion
Effective Date
01-May-2004
Referred By
ASTM F90-23 - Standard Specification for Wrought Cobalt-20Chromium-15Tungsten-10Nickel Alloy for Surgical Implant Applications (UNS R30605)
Effective Date
01-May-2004
Referred By
ASTM F2063-18 - Standard Specification for Wrought Nickel-Titanium Shape Memory Alloys for Medical Devices and Surgical Implants
Effective Date
01-May-2004
Referred By
ASTM B863-19 - Standard Specification for Titanium and Titanium Alloy Wire
Effective Date
01-May-2004
Referred By
ASTM B386/B386M-19e1 - Standard Specification for Molybdenum and Molybdenum Alloy Plate,<brk/>Sheet, Strip, Foil, and Ribbon
Effective Date
01-May-2004
Referred By
ASTM F3273-17(2021)e1 - Standard Specification for Wrought Molybdenum-47.5 Rhenium Alloy for Surgical Implants (UNS R03700)
Effective Date
01-May-2004
Referred By
ASTM B265-20a - Standard Specification for Titanium and Titanium Alloy Strip, Sheet, and Plate
Effective Date
01-May-2004
Referred By
ASTM B861-19 - Standard Specification for Titanium and Titanium Alloy Seamless Pipe
Effective Date
01-May-2004
Referred By
ASTM F2924-14(2021) - Standard Specification for Additive Manufacturing Titanium-6 Aluminum-4 Vanadium with Powder Bed Fusion
Effective Date
01-May-2004
Referred By
ASTM F3049-14(2021) - Standard Guide for Characterizing Properties of Metal Powders Used for Additive Manufacturing Processes
Effective Date
01-May-2004
Referred By
ASTM B1009-20 - Standard Specification for Titanium Alloy Bars for Near Surface Mounts in Civil Structures
Effective Date
01-May-2004

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ASTM E1941-04 - Standard Test Method for Determination of Carbon in Refractory and Reactive Metals and Their AlloysASTM E1941-04 - Standard Test Method for Determination of Carbon in Refractory and Reactive Metals and Their Alloys
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ASTM E1941-04 - Standard Test Method for Determination of Carbon in Refractory and Reactive Metals and Their Alloys
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:E1941–04
Standard Test Method for
Determination of Carbon in Refractory and Reactive Metals
1
and Their Alloys
This standard is issued under the fixed designation E1941; 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 furnace. The carbon in the specimen is oxidized to carbon
dioxide or carbon monoxide, or both, and is eventually carried
1.1 This test method applies to the determination of carbon
to the analyzer/detector. The amount of carbon present is
in refractory and reactive metals and their alloys in concentra-
electronically processed and is displayed by the analyzer
tions from 0.004 to 0.100 % (see Note 1).
readout.
NOTE 1—Actual instrument range might vary from manufacturer to
3.2 This test method is written for use with commercially
manufacturer and according to sample size.
available analyzers equipped to carry out the above operations
1.2 This standard does not purport to address all of the
and calibrated using commercially available standards of
safety concerns, if any, associated with its use. It is the
known carbon content.
responsibility of the user of this standard to establish appro-
4. Significance and Use
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. Specific precau-
4.1 This test method is intended to test for compliance with
tionary statements are given in Section 8.
compositionalspecifications.Itisassumedthatallwhousethis
methodwillbetrainedanalystscapableofperformingcommon
2. Referenced Documents
laboratory procedures skillfully and safely. It is expected that
2
2.1 ASTM Standards:
the work will be performed in a properly equipped laboratory.
E29 Practice for Using Significant Digits in Test Data to
5. Interferences
Determine Conformance with Specifications
E50 Practices for Apparatus, Reagents, and Safety Consid-
5.1 The elements ordinarily present in these alloys do not
erations for Chemical Analysis of Metals, Ores, and
interfere. Halides that are present in some sponge type samples
Related Materials
will cause low carbon recovery.
E55 Practice for Sampling Wrought Nonferrous Metals and
6. Apparatus
Alloys for Determination of Chemical Composition
E1601 Practice for Conducting an Interlaboratory Study to 6.1 Combustion Furnace and Measurement Apparatus, au-
Evaluate the Performance of an Analytical Method
tomatic carbon determinator, consisting of an induction fur-
E456 Terminology Relating to Quality and Statistics nace; a dust/debris removal trap; an analytical gas stream
E1019 Test Methods for Determination of Carbon, Sulfur,
purification system; an infrared detection system; and an
Nitrogen, and Oxygen in Steel, Iron, Nickel, and Cobalt automatic readout (see Note 2).
Alloys by Various Combustion and Fusion Techniques
NOTE 2—Several models of commercial carbon determinators are
available and presently in use in industry. Each has its own unique design
3. Summary of Test Method
characteristics and operational requirements. Consult the instrument
3.1 The metal specimen, contained in a single-use ceramic
manufacturer’s instruction manuals for operational details.
crucible, is ignited in an oxygen atmosphere in an induction
6.2 Oxygen Tank and Regulator.
6.3 Ceramic Crucibles and Lids, that meet or exceed the
1
instrument manufacturer’s specifications. Use lids with holes
This test method is under the jurisdiction of ASTM Committee E01 on
Analytical Chemistry for Metals, Ores, and Related Materials and is the direct
in them.
responsibility of Subcommittee E01.06 on Titanium, Zirconium, Tungsten, Molyb-
6.4 Crucible Tongs, capable of handling recommended cru-
denum, Tantalum, Niobium, Hafnium, and Rhenium.
cibles.
Current edition approved May 1, 2004. Published June 2004. Originally
approved in 1998. Last previous edition approved in 1998 as E1941–98. DOI: 6.5 Balance, capable of weighing to the nearest milligram.
10.1520/E1941-04.
6.6 Muffle Furnace, capable of reaching and sustaining a
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
temperature of at least 700°C.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
E1941–04
7. Reagents lids from the muffle furnace and allow them to cool in a
covered container. Handle prepared lids only with clean
7.1 Acetone (A.R., or other suitab
...

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ASTM E135-23a(Terminology)
Standard Terminology Relating to Analytical Chemistry for Metals, Ores, and Related Materials

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SCOPE
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ASTM E1806-23(Practice)
Standard Practice for Sampling Steel and Iron for Determination of Chemical Composition

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1.1 This practice covers the sampling of all grades of steel, both cast and wrought, and all types (grades) of cast irons and blast furnace iron for chemical and spectrochemical determination of composition. This practice is similar to ISO 14284.  
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Sections  
Requirements for Sampling and Sample Preparation  
6  
General  
6.1  
Sample  
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General  
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Spoon Sampling  
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Probe Sampling  
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Preparation of a Sample for Analysis  
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Liquid Iron for Cast Iron Production  
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General  
8.1  
Spoon Sampling  
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Probe Sampling  
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Preparation of a Sample for Analysis  
8.4  
Sampling and Sample Preparation for the Determination of  
8.5  
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General  
9.1  
Probe Sampling  
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Spoon Sampling  
9.3  
Preparation of a Sample for Analysis  
9.4  
Sampling and Sample Preparation for the Determination  
9.5  
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Sampling and Sample Preparation for the Determination  
9.6  
of Hydrogen  
Pig Irons  
10  
General  
10.1  
Increment Sampling  
10.2  
Preparation of a Sample for Analysis  
10.3  
Cast Iron Products  
11  
General  
11.1  
Sampling and Sample Preparation  
11.2  
Sections  
Steel Products  
12  
General  
12.1  
Selection of a Laboratory Sample or a Sample for  
12.2  
Analysis from a Cast Product  
Selection of a Laboratory Sample or a Sample for  
12.3  
Analysis from a Wrought Product  
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12.4  
Sampling of Leaded Steel  
12.5  
Sampling and Sample Preparation for the Determination  
12.6  
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Sampling and Sample Preparation for the Determination  
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Keywords  
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Annexes  
Sampling Probes for Use with Liquid Iron and Steel  
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Standard Test Method for Analysis of Cast Iron by Spark Atomic Emission Spectrometry

SIGNIFICANCE AND USE
5.1 The chemical composition of cast iron alloys shall be determined accurately in order to ensure the desired metallurgical properties. This procedure is suitable for manufacturing control and inspection testing.
SCOPE
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Ranges, %  
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Applicable Range, %  
Quantitative Range, %A  
Carbon  
1.9 to 3.8  
1.90 to 3.8  
Chromium  
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0.02 to 2.0  
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0.15 to 2.5  
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5.1 This test method for the chemical analysis of titanium and titanium alloys is primarily intended to test material for compliance with specifications of chemical composition such as those under the jurisdiction of ASTM Committee B10. It may also be used to test compliance with other specifications that are compatible with the test method.  
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1.3 Because of the lack of certified reference materials (CRMs) containing bismuth, hafnium, and magnesium, these elements were not included in the scope or the interlaboratory study (ILS). It may be possible to extend the scope of this test method to include these elements provided that method validation includes the evaluation of method sensitivity, precision, and bias during the development of the testing method.  
1.4 Units—The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard.  
1.5 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. Specific safety hazards statements are given in Section 9.  
1.6 This international standard was developed in accordance with internationally recognized principle...

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Standard Test Method for Determination of Calcium and Magnesium in Iron Ores by Flame Atomic Absorption Spectrometry

SIGNIFICANCE AND USE
5.1 This test method is intended as a referee method for compliance with compositional specifications for impurity content. It is assumed that all who use this procedure will be trained analysts capable of performing common laboratory practices skillfully and safely. It is expected that work will be performed in a properly equipped laboratory and that proper waste disposal procedures will be followed. Follow appropriate quality control practices such as those described in Guide E882.
SCOPE
1.1 This test method covers the determination of calcium and magnesium in iron ores, concentrates, and agglomerates in the mass fraction (%) range from 0.05 % to 5 % of calcium and 0.05 % to 3 % of magnesium.  
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.  
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Standard Test Method for Determination of Aluminum in Iron Ores by Flame Atomic Absorption Spectrometry

SIGNIFICANCE AND USE
5.1 This test method is intended as a referee method for compliance with compositional specifications for impurity content. It is assumed that all who use this procedure will be trained analysts capable of performing common laboratory practices skillfully and safely. It is expected that work will be performed in a properly equipped laboratory and that proper waste disposal procedures will be followed. Follow appropriate quality control practices such as those described in Guide E882.
SCOPE
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ASTM E1184-21(Practice)
Standard Practice for Determination of Elements by Graphite Furnace Atomic Absorption Spectrometry

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4.1 This practice is intended for users who are attempting to establish GF-AAS procedures. It should be helpful for establishing a complete atomic absorption analysis program.
SCOPE
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1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.  
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. Specific safety hazard statements are given in Section 9.  
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.

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ASTM
ASTM E1805-21(Test Method)
Standard Test Method for Determination of Gold in Copper Concentrates by Fire Assay Gravimetry

SIGNIFICANCE AND USE
5.1 In the metallurgical process used in the mining industries, gold is often carried along with copper during the flotation concentration process. Metallurgical accounting, process control, and concentrate evaluation procedures for this type of material depend on an accurate, precise measurement of the gold in the copper concentrate. This test method is intended to be a reference method for metallurgical laboratories and a referee method to settle disputes in commercial transactions. It is also a definitive method intended to test materials for compliance with compositional specifications and to provide data for certification of reference materials. It is essential that each performance of the method be validated by applying it to appropriate reference materials at the same time and in the same manner as it is applied to the unknowns.  
5.2 It is assumed that all who use this test method will be trained analysts capable of performing skillfully and safely. It is expected that the work will be performed in a properly equipped laboratory under appropriate quality control practices such as those described in Guide E882.
SCOPE
1.1 This test method is for the determination of gold in copper concentrates in the content range from 0.2 μg/g to 17 μg/g.
Note 1: The lower scope limit is set in accordance with Practice E1601.  
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. For specific warning statements, see 11.3.1, 11.5.4, and 11.6.5.  
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.

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