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ASTM B251-02

(Specification)

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

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

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 B 68, B 75, B 135, B 466/B 466M, and B 743.
Note 1—A complete metric companion to Specification B 251 has been developed—B 251M; therefore, no metric equivalents are presented in this specification.

General Information

Status
Historical
Publication Date
09-Oct-2002
ICS
77.150.30 - Copper products
Technical Committee
B05 - Copper and Copper Alloys
Drafting Committee
B05.04 - Pipe and Tube
Current Stage
Ref Project

Relations

Replaces
ASTM B251-97 - Standard Specification for General Requirements for Wrought Seamless Copper and Copper-Alloy Tube
Effective Date
10-Oct-2002
Replaced By
ASTM B251-02e1 - Standard Specification for General Requirements for Wrought Seamless Copper and Copper-Alloy Tube
Effective Date
10-Oct-2002
Referred By
ASTM B743-23 - Standard Specification for Seamless Copper Tube in Coils
Effective Date
10-Oct-2002
Referred By
ASTM B903-15(2022) - Standard Specification for Seamless Copper Heat Exchanger Tubes With Internal Enhancement
Effective Date
10-Oct-2002
Referred By
ASTM B643-18 - Standard Specification for Copper-Beryllium Alloy Seamless Tube
Effective Date
10-Oct-2002

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ASTM B251-02 - Standard Specification for General Requirements for Wrought Seamless Copper and Copper-Alloy TubeASTM B251-02 - Standard Specification for General Requirements for Wrought Seamless Copper and Copper-Alloy Tube
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ASTM B251-02 - Standard Specification for General Requirements for Wrought Seamless Copper and Copper-Alloy Tube
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: B 251 – 02
Standard Specification for
General Requirements for Wrought Seamless Copper and
1
Copper-Alloy Tube
This standard is issued under the fixed designation B 251; 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.
This standard has been approved for use by agencies of the Department of Defense.
2
1. Scope * B 743 Specification for Seamless Copper Tube in Coils
4
E 3 Guide for Preparation of Metallographic Specimens
1.1 This specification covers a group of general require-
4
E 8 Test Methods forTensionTesting of Metallic Materials
ments common to several wrought product specifications.
E 18 Test Methods for Rockwell Hardness and Rockwell
Unless otherwise specified in the purchase order, or in an
4
Superficial Hardness of Metallic Materials
individual specification, these general requirements shall apply
E 29 Practice for Using Significant Digits in Test Data to
to copper and copper-alloy tube supplied under Specifications
5
Determine Conformance with Specifications
B 68, B 75, B 135, B 466/B 466M, and B 743.
E 53 Test Methods for Determination of Copper in Unal-
NOTE 1—A complete metric companion to Specification B 251 has 6
loyed Copper by Gravimetry
been developed—B 251M; therefore, no metric equivalents are presented
E 55 PracticeforSamplingWroughtNonferrousMetalsand
in this specification.
7
Alloys for Determination of Chemical Composition
E 62 Test Methods for Chemical Analysis of Copper and
2. Referenced Documents
6
Copper Alloys (Photometric Methods)
2.1 The following documents of the issue in effect on date
4
E 112 Test Methods for Determining Average Grain Size
of material purchase form a part of this specification to the
E 478 Test Methods for Chemical Analysis of Copper
extent referenced herein:
7
Alloys
2.2 ASTM Standards:
B 68 Specification for Seamless Copper Tube, Bright An-
3. Terminology
2
nealed
3.1 Definitions:
2
B 75 Specification for Seamless Copper Tube
2 3.1.1 average diameter (for round tubes only)—the average
B 135 Specification for Seamless Brass Tube
ofthemaximumandminimumoutsidediameters,ormaximum
B 153 Test Method for Expansion (Pin Test) of Copper and
and minimum inside diameters, whichever is applicable, as
2
Copper-Alloy Pipe and Tubing
determined at any one cross section of the tube.
B 154 Test Method for Mercurous Nitrate Test for Copper
3.1.2 coil—a length of the product wound into a series of
2
and Copper Alloys
connected turns. The unqualified term “coil” as applied to tube
B 170 Specification for Oxygen-Free Electrolytic Copper—
usually refers to a bunched coil.
2
Refinery Shapes
3.1.2.1 bunched—a coil in which the turns are bunched and
B 193 Test Method for Resistivity of Electrical Conductor
held together such that the cross section of the bunched turns
3
Materials
is approximately circular.
B 428 Test Method for Angle of Twist in Rectangular and
3.1.2.2 double layer flat—a coil in which the product is
2
Square Copper and Copper Alloy Tube
spirally wound into two connected disk-like layers such that
B 466/B 466M Specification for Seamless Copper-Nickel
one layer is on top of the other. (Sometimes called “double
2
Pipe and Tube
layer pancake coil” or “double layer spirally wound coil.”)
B 643 Specification for Copper-Beryllium Alloy Seamless
3.1.2.3 level or traverse wound—a coil in which the turns
2
Tube
are wound into layers parallel to the axis of the coil such that
successive turns in a given layer are next to one another.
(Sometimes called “helical coil.”)
1
ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper
and CopperAlloys and is the direct responsibility of Subcommittee B05.04 on Pipe
and Tube.
4
Current edition approved Oct. 10, 2002. Published November 2002. Originally Annual Book of ASTM Standards, Vol 03.01.
5
published as B 251 – 51 T. Last previous edition B 251 – 97. Annual Book of ASTM Standards, Vol 14.02.
2 6
Annual Book of ASTM Standards, Vol 02.01. Annual Book of ASTM Standards, Vol 03.06.
3 7
Annual Book of ASTM Standards, Vol 02.03. Annual Book of ASTM Standards, Vol 03.05.
*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 ----------------------
B251–02
3.1.2.4 level or traverse wound on a reel or spool—a coil in 3.1.5 tube—a hollow product of round or any other cross
which the turns are positioned into layers on a reel or spool section, having a continuous periphery.
parallel to the axis of the reel or spool such that successive
3.1.5.1 tube, automotive and gene
...

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SCOPE
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Note 2: The contents of this guide were previously maintained as a white paper under the title, “ASTM Committee B05 Outline of Form of Specifications.”  
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This specification establishes the general requirements common to wrought copper and copper alloy rods, bars, shapes, and forgings. Products shall be manufactured by hot working, cold working, or both, and finished by cold working, annealing, or heat treatment and straightening as identified necessary to meet the properties specified. Materials shall be sampled and prepared, then tested accordingly to examine their conformance to dimensional (mass, diameter, length, straightness, and edge contours), mechanical (tensile strength, Rockwell hardness, elongation, and hydrogen embrittlement), electrical resistivity, chemical composition, and grain size requirements. The products shall also meet performance requirements when subjected to residual stress, mercurous nitrate, ammonia vapor, and semiguided bend tests. In the event of conflict between this specification and the individual casting product specifications, the requirements of the casting specification shall take precedence.
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12.1 For the purpose of determining compliance with the specified limits for requirements of the properties listed in the following table and for dimensional tolerances, an observed value or a calculated value shall be rounded as indicated in accordance with the rounding method of Practice E29.    
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significant digit used in expressing the  
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nearest 1 %  
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Under 0.060 mm  
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0.060 mm and over  
nearest 0.01 mm
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1.1 This specification2 covers the general requirements common to wrought copper and copper alloy rod, bar, shapes, and forgings which shall apply to Specifications B16/B16M, B21/B21M, B98/B98M, B124/B124M, B138/B138M, B139/B139M, B140/B140M, B150/B150M, B151/B151M, B187/B187M, B196/B196M, B283/B283M, B301/B301M, B371/B371M, B411/B411M, B441, B453/B453M, B455, B570, B870, B927/B927M, B929, B967/B967M, B974/B974M, and B981/B981M to the extent referenced therein.  
1.2 The chemical composition, physical and mechanical properties, and all other requirements not included in this specification are prescribed in the product specification.  
1.3 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
1.3.1 Within the text the SI values are given in brackets.  
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
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1.1 This specification establishes requirements for brass rod (round, hexagonal, and octagonal), bar (rectangular and square), and shapes of UNS Alloys C21000, C22000, C23000, C24000, C26000, C26800, C27000, C27400, C27450, C27451, C27453, C27550, and C28500.  
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This specification establishes the requirements for copper-based brass or bronze centrifugal castings. Mechanical properties are determined from test bar castings and should meet the requirements listed herein. Brinell hardness readings should be taken on the grip end of tension test bars. All castings should not be repaired by welding without customer approval. UNS C95520 copper alloy castings are used in the heat treated condition only.
SCOPE
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