ASTM B954-15
(Test Method)Standard Test Method for Analysis of Magnesium and Magnesium Alloys by Atomic Emission Spectrometry
Standard Test Method for Analysis of Magnesium and Magnesium Alloys by Atomic Emission Spectrometry
SIGNIFICANCE AND USE
5.1 The metallurgical properties of magnesium and its alloys are highly dependant on chemical composition. Precise and accurate analyses are essential to obtaining desired properties, meeting customer specifications and helping to reduce scrap due to off-grade material.
5.2 This test method is applicable to chill cast specimens as defined in Practice B953 and can also be applied to other types of samples provided that suitable reference materials are available.
SCOPE
1.1 This test method describes the analysis of magnesium and its alloys by atomic emission spectrometry. The magnesium specimen to be analyzed may be in the form of a chill cast disk, casting, sheet, plate, extrusion or some other wrought form or shape. The elements covered in the scope of this method are listed in the table below.
Element
Mass Fraction Range (Wt %)
Aluminum
0.001 to 12.0
Beryllium
0.0001 to 0.01
Boron
0.0001 to 0.01
Cadmium
0.0001 to 0.05
Calcium
0.0005 to 0.05
Cerium
0.01 to 3.0
Chromium
0.0002 to 0.005
Copper
0.001 to 0.05
Dysprosium
0.01 to 1.0
Erbium
0.01 to 1.0
Gadolinium
0.01 to 3.0
Iron
0.001 to 0.06
Lanthanum
0.01 to 1.5
Lead
0.005 to 0.1
Lithium
0.001 to 0.05
Manganese
0.001 to 2.0
Neodymium
0.01 to 3.0
Nickel
0.0005 to 0.05
Phosphorus
0.0002 to 0.01
Praseodymium
0.01 to 0.5
Samarium
0.01 to 1.0
Silicon
0.002 to 5.0
Silver
0.001 to 0.2
Sodium
0.0005 to 0.01
Strontium
0.01 to 4.0
Tin
0.002 to 0.05
Titanium
0.001 to 0.02
Yttrium
0.02 to 7.0
Ytterbium
0.01 to 1.0
Zinc
0.001 to 10.0
Zirconium
0.001 to 1.0
Note 1: The mass fraction ranges given in the above scope are estimates based on two manufacturers observations and data provided by a supplier of atomic emission spectrometers. The range shown for each element does not demonstrate the actual usable analytical range for that element. The usable analytical range may be extended higher or lower based on individual instrument capability, spectral characteristics of the specific element wavelength being used and the availability of appropriate reference materials.
1.2 This test method is suitable primarily for the analysis of chill cast disks as described in Sampling Practice B953. Other forms may be analyzed, provided that: (1) they are sufficiently massive to prevent undue heating, (2) they allow machining to provide a clean, flat surface which creates a seal between the specimen and the spark stand, and (3) reference materials of a similar metallurgical condition (spectrochemical response) and chemical composition are available.
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 and health practices and determine the applicability of regulatory limitations prior to use. Specific safety and health statements are given in Section 10.
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Designation: B954 − 15
Standard Test Method for
Analysis of Magnesium and Magnesium Alloys by Atomic
1
Emission Spectrometry
This standard is issued under the fixed designation B954; 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.
based on individual instrument capability, spectral characteristics of the
1. Scope
specific element wavelength being used and the availability of appropriate
1.1 This test method describes the analysis of magnesium
reference materials.
and its alloys by atomic emission spectrometry. The magne-
1.2 This test method is suitable primarily for the analysis of
sium specimen to be analyzed may be in the form of a chill cast
chill cast disks as described in Sampling Practice B953. Other
disk, casting, sheet, plate, extrusion or some other wrought
forms may be analyzed, provided that: (1) they are sufficiently
form or shape. The elements covered in the scope of this
massive to prevent undue heating, (2) they allow machining to
method are listed in the table below.
provide a clean, flat surface which creates a seal between the
Element Mass Fraction Range (Wt %)
specimen and the spark stand, and (3) reference materials of a
Aluminum 0.001 to 12.0
similar metallurgical condition (spectrochemical response) and
Beryllium 0.0001 to 0.01
Boron 0.0001 to 0.01
chemical composition are available.
Cadmium 0.0001 to 0.05
1.3 This standard does not purport to address all of the
Calcium 0.0005 to 0.05
Cerium 0.01 to 3.0
safety concerns, if any, associated with its use. It is the
Chromium 0.0002 to 0.005
responsibility of the user of this standard to establish appro-
Copper 0.001 to 0.05
priate safety and health practices and determine the applica-
Dysprosium 0.01 to 1.0
Erbium 0.01 to 1.0
bility of regulatory limitations prior to use. Specific safety and
Gadolinium 0.01 to 3.0
health statements are given in Section 10.
Iron 0.001 to 0.06
Lanthanum 0.01 to 1.5
Lead 0.005 to 0.1
2. Referenced Documents
Lithium 0.001 to 0.05
2
2.1 ASTM Standards:
Manganese 0.001 to 2.0
Neodymium 0.01 to 3.0
B953 Practice for Sampling Magnesium and Magnesium
Nickel 0.0005 to 0.05
Alloys for Spectrochemical Analysis
Phosphorus 0.0002 to 0.01
Praseodymium 0.01 to 0.5 E135 Terminology Relating to Analytical Chemistry for
Samarium 0.01 to 1.0
Metals, Ores, and Related Materials
Silicon 0.002 to 5.0
E305 Practice for Establishing and Controlling Atomic
Silver 0.001 to 0.2
Sodium 0.0005 to 0.01 Emission Spectrochemical Analytical Curves
Strontium 0.01 to 4.0
E406 Practice for Using Controlled Atmospheres in Spec-
Tin 0.002 to 0.05
trochemical Analysis
Titanium 0.001 to 0.02
E826 Practice for Testing Homogeneity of a Metal Lot or
Yttrium 0.02 to 7.0
Ytterbium 0.01 to 1.0
Batch in Solid Form by Spark Atomic Emission Spec-
Zinc 0.001 to 10.0
trometry
Zirconium 0.001 to 1.0
E1257 Guide for Evaluating Grinding Materials Used for
NOTE 1—The mass fraction ranges given in the above scope are
Surface Preparation in Spectrochemical Analysis
estimates based on two manufacturers observations and data provided by
E1329 Practice for Verification and Use of Control Charts in
a supplier of atomic emission spectrometers. The range shown for each
element does not demonstrate the actual usable analytical range for that Spectrochemical Analysis
element. The usable analytical range may be extended higher or lower
E1507 Guide for Describing and Specifying the Spectrom-
eter of an Optical Emission Direct-Reading Instrument
1
This test method is under the jurisdiction of ASTM Committee B07 on Light
Metals and Alloys and is the direct responsibility of Subcommittee B07.04 on
2
Magnesium Alloy Cast and Wrought Products. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Oct. 1, 2015. Published November 2015. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 2007. Last previous edition approved in 2007 as B954 – 07. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/B0954-15. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
B954 − 15
3. Terminology calculations are used to correct for both alloy difference and
inter-element effects. Like the method above, specific alloy
3.1 Definitions—For definitions of terms used in this test
calibrants may be used to apply a slope correction, intercept
method, refer to Terminology E135.
correction, or both to the observed readings.
3
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: B954 − 07 B954 − 15
Standard Test Method for
Analysis of Magnesium and Magnesium Alloys by Atomic
1
Emission Spectrometry
This standard is issued under the fixed designation B954; 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
1.1 This test method describes the analysis of magnesium and its alloys by atomic emission spectrometry. The magnesium
specimen to be analyzed may be in the form of a chill cast disk, casting, sheet, plate, extrusion or some other wrought form or
shape. The elements covered in the scope of this method are listed in the table below.
Element Concentration Range (Wt %)
Element Mass Fraction Range (Wt %)
Aluminum 0.001 to 12.0
Beryllium 0.0001 to 0.01
Boron 0.0001 to 0.01
Cadmium 0.0001 to 0.05
Calcium 0.0005 to 0.05
Cerium 0.01 to 3.0
Chromium 0.0002 to 0.005
Copper 0.001 to 0.05
Dysprosium 0.01 to 1.0
Erbium 0.01 to 1.0
Gadolinium 0.01 to 3.0
Iron 0.001 to 0.06
Lanthanum 0.01 to 1.5
Lead 0.005 to 0.1
Lithium 0.001 to 0.05
Manganese 0.001 to 2.0
Neodymium 0.01 to 3.0
Nickel 0.0005 to 0.05
Phosphorus 0.0002 to 0.01
Praseodymium 0.01 to 0.5
Samarium 0.01 to 1.0
Silicon 0.002 to 5.0
Silver 0.001 to 0.2
Sodium 0.0005 to 0.01
Strontium 0.01 to 4.0
Tin 0.002 to 0.05
Titanium 0.001 to 0.02
Yttrium 0.02 to 7.0
Ytterbium 0.01 to 1.0
Zinc 0.001 to 10.0
Zirconium 0.001 to 1.0
NOTE 1—The concentration mass fraction ranges given in the above scope are estimates based on two manufacturers observations and data provided
by a supplier of atomic emission spectrometers. The range shown for each element does not demonstrate the actual usable analytical range for that
element. The usable analytical range may be extended higher or lower based on individual instrument capability, spectral characteristics of the specific
element wavelength being used and the availability of appropriate reference materials.
1.2 This test method is suitable primarily for the analysis of chill cast disks as defineddescribed in Sampling Practice B953.
Other forms may be analyzed, provided that: (1) they are sufficiently massive to prevent undue heating, (2) they allow machining
to provide a clean, flat surface which creates a seal between the specimen and the spark stand, and (3) reference materials of a
similar metallurgical condition (spectrochemical response) and chemical composition are available.
1
This test method is under the jurisdiction of ASTM Committee B07 on Light Metals and Alloys and is the direct responsibility of Subcommittee B07.04 on Magnesium
Alloy Cast and Wrought Products.
Current edition approved June 1, 2007Oct. 1, 2015. Published June 2007November 2015. Originally approved in 2007. Last previous edition approved in 2007 as
B954 – 07. DOI: 10.1520/B0954-07.10.1520/B0954-15.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
B954 − 15
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 and health practices and determine the applicability of regulatory
limitations prior to use. Specific safety and health statements are given in Section 10.
2. Referenced Documents
2
2.1 ASTM Standards:
B953 Practice for Sampling Magnesium and Magnesium Alloys for Spectrochemical Analysis
E135 Terminology Relating to Analytical Chemistry for Metals, Ores, and Related Materials
E158 Practice for Fundamental Calculations to Convert Intensities into Concentrations in Optical Emission Spectrochemical
3
Analysis (Withdrawn 2004)
3
E172 Practice for Describing and Specifying the Excitation Source in Emission Spectrochemical Analysis (Withdrawn 2001)
E305 Practice for Establishing and Controlling Atomic Emission Spectrochemical Analytical Curves
E406 Practice for Using Controlled Atmospheres in Spectrochemical Analysis
E826 Practice for Testing Homogeneity of a Metal Lot or Batch in Solid Form by Spark Atomic Emission Spectrometry
3
E876 Practice for Use of Statistics in the Evaluation of Spectrometric Data (Withdrawn 2003)
E1257 Guide for Evaluating Grinding Materials Used for Surface Preparation in Spectrochemical Analysis
E1329 Practice for Verification and Use of Control
...
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