ASTM B370-22

Standard Specification for Copper Sheet and Strip for Building Construction

ABSTRACT
This specification establishes the requirements for rolled copper sheets and strips in flat lengths or coils of ounce-weight thicknesses for roofing, flashing, gutters, downspouts, and general sheet metal work in building construction. Products produced to this specification are not intended for electrical applications. Materials are available in the following tempers: O60 (soft), H00 (cold-rolled), H01 (cold-rolled, high yield), H02 (half hard), H03 (three-quarter hard), and H04 (hard). Products shall be sampled and prepared, then tested accordingly to examine their conformance to dimensional (mass, thickness, length, width, weight, and straightness), mechanical (tensile and yield strength, and Rockwell hardness), chemical composition, and grain recrystallization requirements.
SCOPE
1.1 This specification establishes the requirements for rolled copper sheet and strip in flat lengths or coils in ounce-weight thicknesses for roofing, cladding, flashings, gutters, downspouts, and general sheet metal work for building construction.  
1.1.1 Products produced to this specification are not intended for electrical applications.  
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.
Note 1: Specification B101 is an associated specification for lead-coated copper sheets and strip for building construction.  
1.3 The following hazard caveat pertains to the test methods portion, Section 16, of 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.

General Information

• Status: Published
• Publication Date: 30-Apr-2022
• ICS: 77.150.30 - Copper products
• Technical Committee: B05 - Copper and Copper Alloys
• Drafting Committee: B05.01 - Plate, Sheet, and Strip

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:B370 −22
Standard Specification for
1
Copper Sheet and Strip for Building Construction
This standard is issued under the fixed designation B370; 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* B248 Specification for General Requirements for Wrought
Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled
1.1 Thisspecificationestablishestherequirementsforrolled
Bar
copper sheet and strip in flat lengths or coils in ounce-weight
B601 ClassificationforTemperDesignationsforCopperand
thicknesses for roofing, cladding, flashings, gutters,
Copper Alloys—Wrought and Cast
downspouts, and general sheet metal work for building con-
B846 Terminology for Copper and Copper Alloys
struction.
E8/E8M Test Methods for Tension Testing of Metallic Ma-
1.1.1 Products produced to this specification are not in-
terials
tended for electrical applications.
E112 Test Methods for Determining Average Grain Size
1.2 Units—The values stated in inch-pound units are to be
E255 Practice for Sampling Copper and Copper Alloys for
regarded as standard. The values given in parentheses are
the Determination of Chemical Composition
mathematical conversions to SI units that are provided for
information only and are not considered standard.
3. General Requirements
NOTE 1—Specification B101 is an associated specification for lead-
3.1 The following sections of Specification B248 constitute
coated copper sheets and strip for building construction.
a part of this specification:
1.3 Thefollowinghazardcaveatpertainstothetestmethods
3.1.1 Terminology;
portion, Section 16, of this specification
3.1.2 Materials and Manufacture;
1.3.1 This standard does not purport to address all of the
3.1.3 Workmanship, Finish, and Appearance;
safety concerns, if any, associated with its use. It is the
3.1.4 Specimen Preparation;
responsibility of the user of this standard to establish appro-
3.1.5 Test Methods;
priate safety, health, and environmental practices and deter-
3.1.6 Significance of Numerical Limits;
mine the applicability of regulatory limitations prior to use.
3.1.7 Inspection;
3.1.8 Certification;
1.4 This international standard was developed in accor-
3.1.9 Test Report;
dance with internationally recognized principles on standard-
3.1.10 Packaging and Package Marking; and
ization established in the Decision on Principles for the
3.1.11 Supplementary Requirements.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
3.2 In addition, when a section with a title identical to that
Barriers to Trade (TBT) Committee.
referenced in 3.1, above, appears in this specification, it
contains additional requirements, which supplement those
2. Referenced Documents
appearing in Specification B248.
2
2.1 ASTM Standards:
B101 Specification for Lead-Coated Copper Sheet and Strip
4. Terminology
for Building Construction
4.1 Definitions:
4.1.1 For definitions of terms related to copper and copper
1
ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper
alloys, refer to Terminology B846.
andCopperAlloysandisthedirectresponsibilityofSubcommitteeB05.01onPlate,
4.2 Definitions of Terms Specific to This Standard:
Sheet, and Strip.
4.2.1 coil, n—a length of the product wound into a series of
Current edition approved May 1, 2022. Published May 2022. Originally
connected turns.
approved in 1961. Last previous edition approved in 2019 as B370–12 (2019). DOI:
10.1520/B0370-22.
4.2.1.1 Discussion—The unqualified term “coil” as applied
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
to “flat product” usually refers to a coil in which the product is
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
spirally wound, with the successive layers on top of one
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. another (sometimes called a “roll”).
*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 ----------------------
B370−22
4.2.2 flashings, n—an impervious copper or layered copper 5.2 The following are options available under this specifi-
composite sheet or strip used in a building envelope to create cation and sh
...

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: B370 − 12 (Reapproved 2019) B370 − 22
Standard Specification for
1
Copper Sheet and Strip for Building Construction
This standard is issued under the fixed designation B370; 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*
1.1 This specification establishes the requirements for rolled copper sheet and strip in flat lengths or coils in ounce-weight
thicknesses for roofing, flashing, cladding, flashings, gutters, downspouts, and general sheet metal work infor building
construction.
1.1.1 Products produced to this specification are not intended for electrical applications.
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.
NOTE 1—Specification B101 is an associated specification for lead-coated copper sheets and strip for building construction.
1.3 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.
1.3 The following hazard caveat pertains to the test methods portion, Section 16, of 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.
2. Referenced Documents
2
2.1 ASTM Standards:
B101 Specification for Lead-Coated Copper Sheet and Strip for Building Construction
B248 Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar
B601 Classification for Temper Designations for Copper and Copper Alloys—Wrought and Cast
1
This specification is under the jurisdiction of ASTM Committee B05 on Copper and Copper Alloys and is the direct responsibility of Subcommittee B05.01 on Plate,
Sheet, and Strip.
Current edition approved Oct. 1, 2019May 1, 2022. Published October 2019May 2022. Originally approved in 1961. Last previous edition approved in 20122019 as
B370–12. –12 (2019). DOI: 10.1520/B0370–12R19.10.1520/B0370-22.
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 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 ----------------------
B370 − 22
B846 Terminology for Copper and Copper Alloys
E3 Guide for Preparation of Metallographic Specimens
E8/E8M Test Methods for Tension Testing of Metallic Materials
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. General Requirements
3.1 The following sections of Specification B248 constitute a part of this specification:
3.1.1 Terminology;
3.1.2 Materials and Manufacture;
3.1.3 Workmanship, Finish, and Appearance;
3.1.4 Specimen Preparation;
3.1.5 Test Methods;
3.1.6 Significance of Numerical Limits;
3.1.7 Inspection;
3.1.8 Certification;
3.1.9 Mill Test Report;
3.1.10 Packaging and Package Marking; and
3.1.11 Supplementary Requirements.
3.2 In addition, when a section with a title identical to that referenced in 3.1, above, appears in this specification, it contains
additional requirements, which supplement those appearing in Specification B248.
4
...