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ASTM B 890 : 2007 : R2012

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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

Available format(s)

Hardcopy , PDF

Superseded date

29-10-2020

Superseded by

ASTM B 890 : 2020

Language(s)

English

Published date

12-11-2012

€67.30
Excluding VAT

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Superseded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.

TABLE 1 Elemental Constituents and Concentration Range

Element

Concentration, Mass %
(minimum - maximum)

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


1.3This 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.

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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