ASTM E255-02
(Practice)Standard Practice for Sampling Copper and Copper Alloys for the Determination of Chemical Composition
Standard Practice for Sampling Copper and Copper Alloys for the Determination of Chemical Composition
SIGNIFICANCE AND USE
This practice is intended primarily for the sampling of copper and copper alloys for compliance with compositional specification requirements.
The selection of correct test pieces and the preparation of a representative sample from such test pieces are necessary prerequisites to every analysis. The analytical results will be of little value unless the sample represents the average composition of the material from which it was prepared.
SCOPE
1.1 This practice describes the sampling of copper (except electrolytic cathode) and copper alloys in either cast or wrought form for the determination of composition.
1.2 Cast products may be in the form of cake, billet, wire bar, ingot, ingot bar, or casting.
1.3 Wrought products may be in the form of flat, pipe, tube, rod, bar, shape, or forging.
1.4 This practice is not intended to supersede or replace existing specification requirements for the sampling of a particular material.
1.5 The values stated in inch-pound units are to be regarded as the standard. The values in parentheses are given for information only.
1.6 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. A specific precautionary statement appears in Appendix X4.
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Designation:E255–02
Standard Practice for
Sampling Copper and Copper Alloys for the Determination
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of Chemical Composition
This standard is issued under the fixed designation E 255; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 2.1.5 test piece, n—an individual product selected at one
time from a lot.
1.1 This practice describes the sampling of copper (except
2.1.6 test sample, n—a composite of material taken by
electrolytic cathode) and copper alloys in either cast or
approximate proportional weight from each of the test pieces
wrought form for the determination of composition.
and from which the test portion shall be taken.
1.2 Cast products may be in the form of cake, billet, wire
2.1.7 test portion, n—the quantity of material taken from
bar, ingot, ingot bar, or casting.
the test sample which is subjected to an analytical procedure.
1.3 Wrought products may be in the form of flat, pipe, tube,
rod, bar, shape, or forging.
NOTE 1—Appendix X1 describes the refinery shapes. Appendix X2
1.4 This practice is not intended to supersede or replace describes the fabricators’ forms.
existing specification requirements for the sampling of a
3. Significance and Use
particular material.
1.5 The values stated in inch-pound units are to be regarded 3.1 This practice is intended primarily for the sampling of
copper and copper alloys for compliance with compositional
as the standard. The values in parentheses are given for
information only. specification requirements.
3.2 The selection of correct test pieces and the preparation
1.6 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the of a representative sample from such test pieces are necessary
prerequisites to every analysis.The analytical results will be of
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- little value unless the sample represents the average composi-
tion of the material from which it was prepared.
bility of regulatory limitations prior to use. A specific precau-
tionary statement appears in Appendix X4.
4. Selection of Test Pieces
2. Terminology
4.1 Casting:
4.1.1 Finished Product or Shipment Sample:
2.1 Definitions of Terms Specific to This Standard:
2.1.1 casting, n—a general term for a metal object produced 4.1.1.1 A shipping lot shall consist of all castings of the
same configuration and size necessary to comply with the
at or near-finished shape by pouring or otherwise introducing
molten metal into a mold and allowing it to solidify. requirements of a single purchase order.
4.1.1.2 Castings are frequently produced in advance of
2.1.2 wrought, adj—a general term referring to a metal
object produced by either hot-working or cold-working opera- orders and manufacturer’s or foundry lots may intermingle in
stock.
tions such as forming, bending, cupping, drawing, and hot
pressing. 4.1.1.3 Since the size and configuration of castings vary, the
number of test pieces to be selected shall be subject to
2.1.3 lot, n—as used in this practice, the unit to be sampled,
in pounds or pieces. agreement between the manufacturer or supplier and the
purchaser.
2.1.4 gross sample, n—the total amount of all test pieces
selected to represent the lot. 4.1.2 Manufacturer’s or Foundry Sample:
4.1.2.1 For routine sampling and at the option of the
manufacturer, a lot shall consist of the following:
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This practice is under the jurisdiction of ASTM Committee E01 on Analytical
(a) All of the metal poured from a single furnace or
Chemistry for Metals, Ores, and Related Materials and is the direct responsibility of
crucible melt, or
Subcommittee E01.05 on Cu, Pb, Zn, Cd, Sn, Be, TheirAlloys, and Related Metals.
(b) All of the metal poured from two or more furnaces into
Current edition approved October 10, 2002. Published March 2003. Originally
published as E 255 – 66. Last previous edition E 255 – 91 (1997). a single ladle, or
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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E255–02
(c) All of the metal poured from a continuous melting 4.3.2 Manufacturer’s or Foundry Sample:
furnace between charges, or 4.3.2.1 For routine sampling, the manufacturer shall have
(d) All of the metal poured from an individual melting the option of taking samples during the course of manufacture.
furnace, or group of melting furnaces, having a uniform Samples may be taken at the time castings are poured or from
meltingstock,opera
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