ASTM B42-20
(Specification)Standard Specification for Seamless Copper Pipe, Standard Sizes
Standard Specification for Seamless Copper Pipe, Standard Sizes
ABSTRACT
This specification covers seamless copper pipe in all nominal standard pipe sizes, both regular and extra-strong, suitable for use in plumbing, boiler feed lines, and for similar purposes. The material shall conform to the specified chemical requirements. The pipe shall be produced from one of C10200, C10300, C10800, C12000, and C12200 copper UNS numbers. All pipes shall normally be furnished in the prescribed annealed, light drawn, or hard drawn temper. The pipe shall be made from copper that is free of cuprous oxide, as determined by microscopical examination. The pipe shall be subjected to expansion or flattening, Eddy-current, and hydrostatic tests. Samples for chemical analysis shall be taken in accordance with Practice E255. However, the manufacturer shall have the option of determining conformance by analyzing samples taken at the time the castings are poured or from the semifinished product, subject to the conditions set in the specification.
SIGNIFICANCE AND USE
15.1 For purposes of determining compliance with the specified limits for requirements of the properties listed in the following table, an observed value or a calculated value shall be rounded as indicated in accordance with the rounding method of Practice E29.
Property
Rounded Unit for
Observed or Calculated Value
Chemical composition
nearest unit in the last right-hand place of figures of the specified limit
Tensile strength
Yield strength
nearest ksi (nearest 5 MPa)
SCOPE
1.1 This specification2 establishes the requirements for seamless copper pipe in all nominal or standard pipe sizes, both regular and extra-strong, suitable for use in plumbing, boiler feed lines, and for similar purposes.3
1.2 Units—The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are mathematical conversions to SI units, which are provided for information only and are not considered standard.
1.3 The following safety hazard caveat pertains only to the test methods described in this specification.
1.3.1 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.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:B42 −20
Standard Specification for
1
Seamless Copper Pipe, Standard Sizes
ThisstandardisissuedunderthefixeddesignationB42;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* B577TestMethodsforDetectionofCuprousOxide(Hydro-
2
gen Embrittlement Susceptibility) in Copper
1.1 This specification establishes the requirements for
B601ClassificationforTemperDesignationsforCopperand
seamlesscopperpipeinallnominalorstandardpipesizes,both
Copper Alloys—Wrought and Cast
regular and extra-strong, suitable for use in plumbing, boiler
3 B846Terminology for Copper and Copper Alloys
feed lines, and for similar purposes.
B968/B968MTest Method for Flattening of Copper and
1.2 Units—The values stated in inch-pound units are to be
Copper-Alloy Pipe and Tube
regarded as the standard. The values given in parentheses are
E8/E8MTest Methods for Tension Testing of Metallic Ma-
mathematical conversions to SI units, which are provided for
terials
information only and are not considered standard.
E29Practice for Using Significant Digits in Test Data to
1.3 The following safety hazard caveat pertains only to the Determine Conformance with Specifications
E53Test Method for Determination of Copper in Unalloyed
test methods described in this specification.
1.3.1 This standard does not purport to address all of the Copper by Gravimetry
E62Test Methods for Chemical Analysis of Copper and
safety concerns, if any, associated with its use. It is the
5
responsibility of the user of this standard to establish appro- CopperAlloys(PhotometricMethods)(Withdrawn2010)
E243PracticeforElectromagnetic(EddyCurrent)Examina-
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use. tion of Copper and Copper-Alloy Tubes
E255Practice for Sampling Copper and Copper Alloys for
1.4 This international standard was developed in accor-
the Determination of Chemical Composition
dance with internationally recognized principles on standard-
E478Test Methods for ChemicalAnalysis of CopperAlloys
ization established in the Decision on Principles for the
E527Practice for Numbering Metals and Alloys in the
Development of International Standards, Guides and Recom-
Unified Numbering System (UNS)
mendations issued by the World Trade Organization Technical
6
Barriers to Trade (TBT) Committee. 2.2 ASME Code:
ASMEBoiler and Pressure Vessel Code
2. Referenced Documents
4
3. Terminology
2.1 ASTM Standards:
B153Test Method for Expansion (Pin Test) of Copper and
3.1 Definitions:
Copper-Alloy Pipe and Tubing
3.1.1 For definitions of terms related to copper and copper
B170Specification for Oxygen-Free Electrolytic Copper—
alloys, refer to Terminology B846.
Refinery Shapes
4. Ordering Information
1
ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper
4.1 Include the following specified choices when placing
and CopperAlloys and is the direct responsibility of Subcommittee B05.04 on Pipe
orders for product under this specification as applicable:
and Tube.
Current edition approved April 1, 2020. Published April 2020. Originally
4.1.1 ASTM designation and year of issue;
approved in 1922. Last previous edition approved in 2015 as B42–15a. DOI:
4.1.2 CopperUNSNo.designation,ifrequired,(seeChemi-
10.1520/B0042–20.
cal Composition section);
2
For ASME Boiler and Pressure Vessel Code applications, see related Specifi-
4.1.3 Temper (see Temper section and Table 2);
cation SB-42 in Section II of that Code.
3
The UNS system for copper and copper alloys (see Practice E527) is a simple
expansion of the former standard designation system accomplished by the addition
of a prefix “C” and a suffix “00.” The suffix can be used to accommodate
5
composition variations of the base alloy. The last approved version of this historical standard is referenced on
4
For referenced ASTM standards, visit the ASTM website, www.astm.org, or www.astm.org.
6
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from American Society of Mechanical Engineers (ASME), ASME
Standards volume information, refer to the standard’s Document Summary page on International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
the ASTM website. www.asme.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
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...
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: B42 − 15a B42 − 20
Standard Specification for
1
Seamless Copper Pipe, Standard Sizes
This standard is issued under the fixed designation B42; 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*
2
1.1 This specification establishes the requirements for seamless copper pipe in all nominal or standard pipe sizes, both regular
3
and extra-strong, suitable for use in plumbing, boiler feed lines, and for similar purposes.
1.2 Units—The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are
mathematical conversions to SI units, which are provided for information only and are not considered standard.
1.3 The following safety hazard caveat pertains only to the test methods described in this specification.
1.3.1 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
4
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 Copper—Refinery Shapes
B577 Test Methods for Detection of Cuprous Oxide (Hydrogen Embrittlement Susceptibility) in Copper
B601 Classification for Temper Designations for Copper and Copper Alloys—Wrought and Cast
B846 Terminology for Copper and Copper Alloys
B968/B968M Test Method for Flattening of Copper and Copper-Alloy Pipe and Tube
E8/E8M Test Methods for Tension Testing 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
5
E62 Test Methods for Chemical Analysis of Copper and Copper Alloys (Photometric Methods) (Withdrawn 2010)
E243 Practice for Electromagnetic (Eddy Current) Examination of Copper and Copper-Alloy Tubes
E255 Practice for Sampling Copper and Copper Alloys for the Determination of Chemical Composition
E478 Test Methods for Chemical Analysis of Copper Alloys
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
6
2.2 ASME Code:
ASME Boiler and Pressure Vessel Code
1
This specification is under the jurisdiction of ASTM Committee B05 on Copper and Copper Alloys and is the direct responsibility of Subcommittee B05.04 on Pipe and
Tube.
Current edition approved July 1, 2015April 1, 2020. Published July 2015April 2020. Originally approved in 1922. Last previous edition approved in 2015 as
B42 – 15.B42–15a. DOI: 10.1520/B0042-15A.10.1520/B0042–20.
2
For ASME Boiler and Pressure Vessel Code applications, see related Specification SB-42 in Section II of that Code.
3
The UNS system for copper and copper alloys (see Practice E527) is a simple expansion of the former standard designation system accomplished by the addition of a
prefix “C” and a suffix “00.” The suffix can be used to accommodate composition variations of the base alloy.
4
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’sstandard’s Document Summary page on the ASTM website.
5
The last approved version of this historical standard is referenced on www.astm.org.
6
Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
www.asme.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 ----------------------
B42 − 20
3. Terminology
3.1 Definitions:
3.1.1 For definitions of terms related to copper and copper alloys, refer to Terminology
...
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