ASTM B 890 : 2007 : R2012
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Standard Test Method for Determination of Metallic Constituents of Tungsten Alloys and Tungsten Hardmetals by X-Ray Fluorescence Spectrometry
Hardcopy , PDF
29-10-2020
English
12-11-2012
CONTAINED IN VOL. 02.05, 2017 Describes a procedure for the determination of the concentration, generally reported as mass percent, of the metallic constituents of tungsten-based alloys and hardmetals utilizing wavelength dispersive X-ray fluorescence spectrometry (XRF).
Committee |
B 09
|
DocumentType |
Test Method
|
Pages |
5
|
ProductNote |
Reconfirmed 2012
|
PublisherName |
American Society for Testing and Materials
|
Status |
Superseded
|
SupersededBy | |
Supersedes |
1.1This test method describes a procedure for the determination of the concentration, generally reported as mass percent, of the metallic constituents of tungsten-based alloys and hardmetals utilizing wavelength dispersive X-ray fluorescence spectrometry (XRF). This test method incorporates the preparation of standards using reagent grade metallic oxides, lithium-borate compounds, and fusion techniques. This test method details techniques for preparing representative specimens of both powder and sintered tungsten-based material. This test method is accurate for a wide range of compositions, and can be used for acceptance of material to grade specifications.
1.2This test method is applicable to mixtures of tungsten or tungsten carbide with additions of refractory metal carbides and binder metals. Table 1 lists the most common elemental constituents and their concentration range. Note that many of these occur as metallic carbides.
Element | Concentration, Mass % |
Chromium (Cr) | 0.05 - 5.0 |
Cobalt (Co) | 0.05 - 40 |
Hafnium (Hf) | 0.05 - 2.0 |
Iron (Fe) | 0.05 - 2.0 |
Molybdenum (Mo) | 0.05 - 5.0 |
Nickel (Ni) | 0.05 - 30 |
Niobium (Nb) | 0.05 - 15 |
Tantalum (Ta) | 0.05 - 30 |
Titanium (Ti) | 0.05 - 30 |
Vanadium (V) | 0.05 - 2.0 |
ASTM E 1361 : 1990 : R1999 | Standard Guide for Correction of Interelement Effects in X-Ray Spectrometric Analysis |
ASTM E 1361 : 2002 : R2007 | Standard Guide for Correction of Interelement Effects in X-Ray Spectrometric Analysis |
ASTM E 1361 : 2002 | Standard Guide for Correction of Interelement Effects in X-Ray Spectrometric Analysis |
ASTM E 1361 : 2002 : R2014 : EDT 1 | Standard Guide for Correction of Interelement Effects in X-Ray Spectrometric Analysis |
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