Standard Specification for General Requirements for Wrought Seamless Copper and Copper-Alloy Tube

ABSTRACT
This specification covers a group of general requirements for wrought seamless copper and copper-alloy tube. The material shall be produced by either hot or cold working operations, or both. It shall be finished by such cold working and annealing or heat treatment as necessary to meet the properties specified. The following test methods shall be made to conform to the specified requirements: chemical analysis; tension test; Rockwell hardness; grain size; expansion test; mercurous nitrate test; and electrical resistivity.
SCOPE
1.1 This specification covers a group of general requirements common to several wrought product specifications. Unless otherwise specified in the purchase order, or in an individual specification, these general requirements shall apply to copper and copper-alloy tube supplied under Specifications B68, B75, B135, B466/B466M, and B743.
Note 1—This specification B251 is the inch-pound companion to B251M; therefore, no SI equivalents are presented in the specification.

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Historical
Publication Date
30-Sep-2010
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Drafting Committee
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:B251 −10
Standard Specification for
General Requirements for Wrought Seamless Copper and
1
Copper-Alloy Tube
This standard is issued under the fixed designation B251; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* B643 Specification for Copper-Beryllium Alloy Seamless
Tube
1.1 This specification covers a group of general require-
B743 Specification for Seamless Copper Tube in Coils
ments common to several wrought product specifications.
E3 Guide for Preparation of Metallographic Specimens
Unless otherwise specified in the purchase order, or in an
E8 Test Methods for Tension Testing of Metallic Materials
individual specification, these general requirements shall apply
E18 Test Methods for Rockwell Hardness of Metallic Ma-
to copper and copper-alloy tube supplied under Specifications
terials
B68, B75, B135, B466/B466M, and B743.
E29 Practice for Using Significant Digits in Test Data to
NOTE 1—This specification B251 is the inch-pound companion to
Determine Conformance with Specifications
B251M; therefore, no SI equivalents are presented in the specification.
E53 Test Method for Determination of Copper in Unalloyed
Copper by Gravimetry
2. Referenced Documents
E62 Test Methods for Chemical Analysis of Copper and
3
2.1 The following documents of the issue in effect on date
CopperAlloys (Photometric Methods) (Withdrawn 2010)
of material purchase form a part of this specification to the
E112 Test Methods for Determining Average Grain Size
extent referenced herein:
E255 Practice for Sampling Copper and Copper Alloys for
2
2.2 ASTM Standards: the Determination of Chemical Composition
B68 Specification for Seamless Copper Tube, Bright An-
E478 Test Methods for ChemicalAnalysis of CopperAlloys
nealed
B75 Specification for Seamless Copper Tube
3. Terminology
B135 Specification for Seamless Brass Tube
3.1 Definitions:
B153 Test Method for Expansion (Pin Test) of Copper and
3.1.1 average diameter (for round tubes only)—the average
Copper-Alloy Pipe and Tubing
ofthemaximumandminimumoutsidediameters,ormaximum
B154 Test Method for Mercurous Nitrate Test for Copper
and minimum inside diameters, whichever is applicable, as
Alloys
determined at any one cross section of the tube.
B170 Specification for Oxygen-Free Electrolytic Copper—
3.1.2 coil—a length of the product wound into a series of
Refinery Shapes
connected turns. The unqualified term “coil” as applied to tube
B193 Test Method for Resistivity of Electrical Conductor
usually refers to a bunched coil.
Materials
3.1.2.1 bunched—a coil in which the turns are bunched and
B428 Test Method for Angle of Twist in Rectangular and
held together such that the cross section of the bunched turns
Square Copper and Copper Alloy Tube
is approximately circular.
B466/B466M Specification for Seamless Copper-Nickel
Pipe and Tube
3.1.2.2 double layer flat—a coil in which the product is
spirally wound into two connected disk-like layers such that
one layer is on top of the other. (Sometimes called “double
1
ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper
layer pancake coil” or “double layer spirally wound coil.”)
and CopperAlloys and is the direct responsibility of Subcommittee B05.04 on Pipe
and Tube.
3.1.2.3 level or traverse wound—a coil in which the turns
Current edition approved Oct. 1, 2010. Published November 2010. Originally
are wound into layers parallel to the axis of the coil such that
approved in 1951. Last previous edition approved in 2002 as B251 – 02. DOI:
10.1520/B0251-10.
2
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
3
Standards volume information, refer to the standard’s Document Summary page on The last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
B251−10
successive turns in a given layer are next to one another. 4.2 The material shall be produced by either hot or cold
(Sometimes called “helical coil.”) working operations, or both. It shall be finished, unless
otherwise specified, by such cold working and annealing or
3.1.2.4 level or traverse wound on a reel or spool—a coil in
heat treatment as necessary to meet the properties specified.
which the turns are positioned into la
...

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.
´1
Designation:B251–02 Designation: B251 – 10
Standard Specification for
General Requirements for Wrought Seamless Copper and
1
Copper-Alloy Tube
This standard is issued under the fixed designation B251; 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.
This standard has been approved for use by agencies of the Department of Defense.
1
´ NOTE—Referenced Documents were editorially corrected in November 2003.
1. Scope*
1.1 This specification covers a group of general requirements common to several wrought product specifications. Unless
otherwise specified in the purchase order, or in an individual specification, these general requirements shall apply to copper and
copper-alloy tube supplied under Specifications B68, B75, B135, B466/B466M, and B743.
NOTE1—A complete metric companion to Specification B251 has been developed—B251M; therefore, no metric equivalents are presented in this
specification. 1—This specification B251 is the inch-pound companion to B251M; therefore, no SI equivalents are presented in the specification.
2. Referenced Documents
2.1 The following documents of the issue in effect on date of material purchase form a part of this specification to the extent
referenced herein:
2
2.2 ASTM Standards:
B68 Specification for Seamless Copper Tube, Bright Annealed
B75 Specification for Seamless Copper Tube
B135 Specification for Seamless Brass Tube
B153 Test Method for Expansion (Pin Test) of Copper and Copper-Alloy Pipe and Tubing
B154 Test Method for Mercurous Nitrate Test for Copper Alloys
B170 Specification for Oxygen-Free Electrolytic CopperRefinery Shapes
B193 Test Method for Resistivity of Electrical Conductor Materials
B428 Test Method for Angle of Twist in Rectangular and Square Copper and Copper Alloy Tube
B466/B466M Specification for Seamless Copper-Nickel Pipe and Tube
B643 Specification for Copper-Beryllium Alloy Seamless Tube
B743 Specification for Seamless Copper Tube in Coils
E3 Guide for Preparation of Metallographic Specimens
E8 Test Methods for Tension Testing of Metallic Materials
E18 Test Methods for Rockwell Hardness of Metallic Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E53 Test Method for Determination of Copper in Unalloyed Copper by Gravimetry
E62 Test Methods for Chemical Analysis of Copper and Copper Alloys (Photometric Methods)
E112 Test Methods for Determining Average Grain Size
E255 Practice for Sampling Copper and Copper Alloys for the Determination of Chemical Composition
E478 Test Methods for Chemical Analysis of Copper Alloys
3. Terminology
3.1 Definitions:
1
This specification is under the jurisdiction ofASTM Committee B05 on Copper and CopperAlloys and is the direct responsibility of Subcommittee B05.04 on Pipe and
Tube.
Current edition approved Nov. 10, 2003. Published November 2002. Originally published as B251–51T. Last previous edition B251–97. DOI: 10.1520/B0251-02E01.
Current edition approved Oct. 1, 2010. Published November 2010. Originally approved in 1951. Last previous edition approved in 2002 as B251 – 02. DOI:
10.1520/B0251-10.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
B251 – 10
3.1.1 average diameter (for round tubes only)—the average of the maximum and minimum outside diameters, or maximum and
minimum inside diameters, whichever is applicable, as determined at any one cross section of the tube.
3.1.2 coil—alengthoftheproductwoundintoaseriesofconnectedturns.Theunqualifiedterm“coil”asappliedtotubeusually
refers to a bunched coil.
3.1.2.1 bunched—a coil in which the turns are bunched and held together such that the cross section of the bunched turns is
approximately circular.
3.1.2.2 double layer flat—a coil in which the product is spirally wound into two connected disk-like layers such that one layer
is on top of the other. (Sometimes called “double layer pancake coil” or “double layer spirally
...

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