Standard Practice for Sampling Nonferrous Metals and Alloys in Cast Form for Determination of Chemical Composition

SCOPE
1.1 This practice covers the sampling, for the determination of chemical composition (Note 1) of nonferrous metals and alloys in cast form for remelting or mechanical working.
1.1.1 Refer to Practice E255 for copper and copper alloys.
Note 1--The selection of correct portions of material and the preparation of a representative sample from such portions are necessary prerequisites to every analysis, the analysis being of no value unless the sample actually represents the average composition of the material from which it was selected.
1.2 When agreed upon between the purchaser and the manufacturer, the heat sample and analysis may be accepted as representative of the composition of the metal. In such cases, each lot must be properly identified with the heats from which it was made.
1.3 This practice is intended to cover the general principles of sampling applicable to nonferrous metals in cast form and is not intended to supersede or replace existing specification requirements for sampling of a particular material.
1.4 The values stated in inch-pound units are to be regarded as the 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 and health practices and determine the applicability of regulatory limitations prior to use.

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Historical
Publication Date
30-Sep-2005
Current Stage
Ref Project

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Effective Date
01-Oct-2005

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ASTM E88-91(2005) - Standard Practice for Sampling Nonferrous Metals and Alloys in Cast Form for Determination of Chemical Composition
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:E88–91(Reapproved2005)
Standard Practice for
Sampling Nonferrous Metals and Alloys in Cast Form for
Determination of Chemical Composition
This standard is issued under the fixed designation E88; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope E255 Practice for Sampling Copper and Copper Alloys for
the Determination of Chemical Composition
1.1 This practice covers the sampling, for the determination
of chemical composition (Note 1) of nonferrous metals and
3. Terminology
alloys in cast form for remelting or mechanical working.
3.1 Definitions of Terms Specific to This Standard:
1.1.1 Refer to Practice E255 for copper and copper alloys.
3.1.1 portion, n—the term “portion” is used in this practice
NOTE 1—The selection of correct portions of material and the prepa-
to designate the selected ingots, slabs, etc., from which the
ration of a representative sample from such portions are necessary
sample is prepared.
prerequisites to every analysis, the analysis being of no value unless the
3.1.2 sample, n—the term “sample” is used in this practice
sample actually represents the average composition of the material from
to designate the final form of the material submitted for
which it was selected.
analysis (drillings, millings, etc.).Arepresentative sample may
1.2 When agreed upon between the purchaser and the
best be defined as a small part containing the same components
manufacturer, the heat sample and analysis may be accepted as
in the same proportions as they occur in the relatively large
representative of the composition of the metal. In such cases,
mass of the original lot or lots of material.
each lot must be properly identified with the heats from which
it was made.
4. Selection of Portion
1.3 This practice is intended to cover the general principles
4.1 Aportionrepresentativeofthetotalshipmentorlotshall
of sampling applicable to nonferrous metals in cast form and is
be taken for sampling. This portion shall be so selected that a
not intended to supersede or replace existing specification
minimum wastage of material is incurred, consistent with the
requirements for sampling of a particular material.
required accuracy in sampling.
1.4 The values stated in SI units are to be regarded as
4.2 The number of ingots, slabs, etc., selected to constitute
standard. The values given in parentheses are for information
this portion shall comply with the requirements of the ASTM
only.
specifications covering that particular material.
1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
5. Preparation of Sample
responsibility of the user of this standard to establish appro-
5.1 Machinable materials shall be sampled by drilling,
priate safety and health practices and determine the applica-
milling, or sawing. Materials that are too difficult to machine
bility of regulatory limitations prior to use.
may be ground or crushed.
5.2 Machinable materials in form of bar, billet, ingot, slab,
2. Referenced Documents
cake, etc., shall be sampled by drilling five holes approxi-
2.1 ASTM Standards:
mately 1.27 cm ( ⁄2 in.) in diameter at points equally spaced
between the ends of the pieces along a diagonal line. The
drilling shall be through the total thickness and, if necessary,
This practice is under the jurisdiction of ASTM Committee E01 on Analytical
Chemistry for Metals, Ores and Related Materials and is the direct responsibility of
drilled from both directions, top and bottom.
Subcommittee E01.05 on Cu, Pb, Zn, Cd, Sn, Be, their Alloys and Related Metals.
5.3 Alternatively, any of the forms mentioned in 5.2 may be
Current edition approved Oct. 1, 2005. Published October 2005. Originally
milled or sawed at similar points through a section from side to
approved in 1950. Last previous edition approved in 2001 as E88 – 91 (2001). DOI:
10.1520/E0088-91R05. center or through an entire cross-section of the piece.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
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.
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E88–91 (2005)
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