ASTM B743-12

Standard Specification for Seamless Copper Tube in Coils

ABSTRACT
This standard specification establishes the requirements for seamless copper tube coils, suitable for use in refrigeration and air conditioning or other uses, such as oil lines and gasoline lines. The material of manufacture shall be cast billet, bar, tube and so forth of Copper Alloys No. C10200, C10300, C10800, C12000, or C12200. The tube shall be manufactured by such hot and cold working processes needed to produce a homogeneous, uniform wrought structure. The tube shall be cold drawn to the prescribed finish size and wall thickness. When the cold-drawn temper is required, the final drawing operation shall conform to the specified temper properties. When the annealed temper is required, the tube shall be annealed after the final cold draw to the specified temper properties. The product shall conform to the prescribed electrical mass resistivity, tensile strength, yield strength, Rockwell hardness, and expansion. Each tube shall be subjected to an eddy-current test. Particular coppers shall be tested to meet the cuprous oxide, embrittlement, and cleanness requirements.
SCOPE
1.1 This specification establishes the requirements for seamless copper tube in coils, suitable for use in refrigeration and air conditioning or other uses, such as oil lines and gasoline lines.
1.2 Units—The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 The tube shall be produced of the following coppers. Unless otherwise specified, tubes made from any one of these coppers may be supplied:
Copper Alloy
UNS No.Previously Used
DesignationType of Copper  C10200OF Oxygen-free without residual deoxidantsA C10300...Oxygen-free, extra low phosphorusA C10800...Oxygen-free, low phosphorusA C12000DLPPhosphorized, low residual phosphorus C12200DHPPhosphorized, high residual phosphorus
A See Classification B224.  
1.4 The following safety hazards caveat pertains to the test method portion, Section 17, of this specification. 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.

General Information

• Status: Historical
• Publication Date: 31-Mar-2012
• ICS: 77.150.30 - Copper products
• Technical Committee: B05 - Copper and Copper Alloys
• Drafting Committee: B05.04 - Pipe and Tube

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:B743 −12
Standard Specification for
1
Seamless Copper Tube in Coils
This standard is issued under the fixed designation B743; 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* B193 Test Method for Resistivity of Electrical Conductor
Materials
1.1 Thisspecificationestablishestherequirementsforseam-
B224 Classification of Coppers
lesscoppertubeincoils,suitableforuseinrefrigerationandair
B251 Specification for General Requirements for Wrought
conditioning or other uses, such as oil lines and gasoline lines.
Seamless Copper and Copper-Alloy Tube
1.2 Units—The values stated in inch-pound units are to be
B577 Test Methods for Detection of Cuprous Oxide (Hydro-
regarded as standard. The values given in parentheses are
gen Embrittlement Susceptibility) in Copper
mathematical conversions to SI units that are provided for
B601 Classification forTemper Designations for Copper and
information only and are not considered standard.
Copper Alloys—Wrought and Cast
B846 Terminology for Copper and Copper Alloys
1.3 The tube shall be produced of the following coppers.
Unless otherwise specified, tubes made from any one of these E2 Methods of Preparation of Micrographs of Metals and
Alloys (Including Recommended Practice for Photogra-
coppers may be supplied:
phy As Applied to Metallography); Replaced by E 883
Copper Alloy Previously Used
3
UNS No. Designation Type of Copper (Withdrawn 1983)
E3 Guide for Preparation of Metallographic Specimens
A
C10200 OF Oxygen-free without residual deoxidants
A E8/E8M Test Methods for Tension Testing of Metallic Ma-
C10300 . Oxygen-free, extra low phosphorus
A
C10800 . Oxygen-free, low phosphorus
terials
C12000 DLP Phosphorized, low residual phosphorus
E18 Test Methods for Rockwell Hardness of Metallic Ma-
C12200 DHP Phosphorized, high residual phosphorus
terials
A E29 Practice for Using Significant Digits in Test Data to
See Classification B224.
Determine Conformance with Specifications
1.4 The following safety hazards caveat pertains to the test
E53 Test Method for Determination of Copper in Unalloyed
method portion, Section 17, of this specification. This standard
Copper by Gravimetry
does not purport to address all of the safety concerns, if any,
E62 Test Methods for Chemical Analysis of Copper and
associated with its use. It is the responsibility of the user of this
3
CopperAlloys (Photometric Methods) (Withdrawn 2010)
standard to establish appropriate safety and health practices
E112 Test Methods for Determining Average Grain Size
and determine the applicability of regulatory limitations prior
E243 PracticeforElectromagnetic(Eddy-Current)Examina-
to use.
tion of Copper and Copper-Alloy Tubes
E255 Practice for Sampling Copper and Copper Alloys for
2. Referenced Documents
the Determination of Chemical Composition
2
2.1 ASTM Standards:
E2575 Test Method for Determination of Oxygen in Copper
B153 Test Method for Expansion (Pin Test) of Copper and
and Copper Alloys
Copper-Alloy Pipe and Tubing
B170 Specification for Oxygen-Free Electrolytic Copper—
3. General Requirements
Refinery Shapes
3.1 The following sections of Specification B251 constitute
a part of this specification:
1 3.1.1 Sampling,
ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper
and CopperAlloys and is the direct responsibility of Subcommittee B05.04 on Pipe
3.1.2 Number of tests and retests,
and Tube.
3.1.3 Dimensions and permissible variations,
Current edition approved April 1, 2012. Published May 2012. Originally
3.1.4 Test specimens, and
approved in 1985. Last previous edition approved in 2006 as B743 – 06. DOI:
3.1.5 Significance of numerical limits.
10.1520/B0743-12.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. 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 ----------------------
B743−12
3.2 In addition, when a section with a title identical to those 6.1.1 The material of manufacture shall be cast billet, bar,
referenced in 3.1 appears in this specification, it contains tube, and so forth of Copper Alloys Nos. C10200, C10300,
additional information which supplements those appearing in C10800, C12000, or C12200 and of such purity and sound
...

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:B743–06 Designation: B743 – 12
Standard Specification for
1
Seamless Copper Tube in Coils
This standard is issued under the fixed designation B743; 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 specification establishes the requirements for seamless copper tube in coils, suitable for use in refrigeration and air
conditioning or other uses, such as oil lines and gasoline lines.
1.2 Units—The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are
mathematical conversions to SI units, whichunits that are provided for information only and are not considered standard.
1.3 The tube shall be produced of the following coppers. Unless otherwise specified, tubes made from any one of these coppers
may be supplied:
Copper Alloy Previously Used
UNS No. Designation Type of Copper
A
C10200 OF Oxygen-free without residual deoxidants
A
C10300 . Oxygen-free, extra low phosphorus
A
C10800 . Oxygen-free, low phosphorus
C12000 DLP Phosphorized, low residual phosphorus
C12200 DHP Phosphorized, high residual phosphorus
A
See Classification B224.
1.4 The following safety hazards caveat pertains to the test method portion, Section 17, of this specification. 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.
2. Referenced Documents
2
2.1 ASTM Standards:
B153 Test Method for Expansion (Pin Test) of Copper and Copper-Alloy Pipe and Tubing
B170 Specification for Oxygen-Free Electrolytic CopperRefinery Shapes
B193 Test Method for Resistivity of Electrical Conductor Materials
B224 Classification of Coppers
B251 Specification for General Requirements for Wrought Seamless Copper and Copper-Alloy Tube
B577 Test Methods for Detection of Cuprous Oxide (Hydrogen Embrittlement Susceptibility) in Copper
B601 Classification for Temper Designations for Copper and Copper AlloysWrought and Cast
B846 Terminology for Copper and Copper Alloys
E2 Methods of Preparation of Micrographs of Metals and Alloys (Including Recommended Practice for Photography As
Applied to Metallography); Replaced by E883
E3 Guide for Preparation of Metallographic Specimens
E88/E8M 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
E243 Practice for Electromagnetic (Eddy-Current) Examination of Copper and Copper-Alloy Tubes
E255 Practice for Sampling Copper and CopperAlloys for the Determination of Chemical Composition Practice for Sampling
Copper and Copper Alloys for the Determination of Chemical Composition
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 Oct.April 1, 2006.2012. Published October 2006.May 2012. Originally approved in 1985. Last previous edition approved in 20002006 as
B743 – 006. DOI: 10.1520/B0743-06.10.1520/B0743-12.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. 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 ----------------------
B743 – 12
E2575 Test Method for Determination of Oxygen in Copper and Copper Alloys
3. General Requirements
3.1 The following sections of Specification B251 constitute a part of this specification:
3.1.1 Sampling,
3.1.2 Number of tests and retests,
3.1.3 Dimensions and permissible variations,
3.1.4 Test specimens, and
3.1.5 Significance of numerical limits.
3.2 In additi
...