ASTM B197/B197M-20e1

Standard Specification for Copper-Beryllium Alloy Wire

ABSTRACT
This specification establishes the requirements for copper-beryllium alloy (Copper Alloy UNS Nos. C17200 and C173002) wires in coils, spools, or other forms except straight lengths, of any uniform cross section. Products shall be available in the following tempers: solution heat-treated TB00, and cold-worked TD00 to TD04, which shall be precipitation heat treated after forming. Products that are already precipitation heat treated by the manufacturer shall be available in tempers TF00 (AT), and TH01 to TH04. Products shall be sampled and prepared, then tested accordingly to examine their conformance to dimensional (diameter, thickness, length, width, and straightness), mechanical (tensile and bend strength, Rockwell hardness, and elongation), physical (grain size and count), and chemical composition requirements.
SCOPE
1.1 This specification establishes the requirements for copper-beryllium alloy wire in coils, spools, or other than straight lengths, of any uniform cross section. Copper Alloy UNS Nos. C17200 and C173002 are included.  
1.2 Unless otherwise required, Copper Alloy UNS No. C17200 shall be the alloy furnished whenever Specification B197/B197M is specified without any alloy designation.  
1.3 The values stated in either inch-pounds units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. 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.  
1.4 The following safety hazard caveat pertains only to the test methods described in this specification:  
1.4.1 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.  
1.5 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: 31-May-2020
• ICS: 77.150.30 - Copper products
• Technical Committee: B05 - Copper and Copper Alloys
• Drafting Committee: B05.02 - Rod, Bar, Wire, Shapes and Forgings

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.
´1
Designation:B197/B197M −20
Standard Specification for
1
Copper-Beryllium Alloy Wire
This standard is issued under the fixed designation B197/B197M; 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
ε NOTE—A temper code in 7.1 was corrected editorially in November 2022.
1. Scope* 2. Referenced Documents
3
2.1 ASTM Standards:
1.1 This specification establishes the requirements for
B250/B250M Specification for General Requirements for
copper-beryllium alloy wire in coils, spools, or other than
Wrought Copper Alloy Wire
straight lengths, of any uniform cross section. Copper Alloy
2
B601 Classification forTemper Designations for Copper and
UNS Nos. C17200 and C17300 are included.
Copper Alloys—Wrought and Cast
1.2 Unless otherwise required, Copper Alloy UNS No.
B846 Terminology for Copper and Copper Alloys
C17200 shall be the alloy furnished whenever Specification
E8/E8M Test Methods for Tension Testing of Metallic Ma-
B197/B197M is specified without any alloy designation.
terials
E112 Test Methods for Determining Average Grain Size
1.3 The values stated in either inch-pounds units or SI units
E527 Practice for Numbering Metals and Alloys in the
are to be regarded separately as standard. Within the text, the
Unified Numbering System (UNS)
SI units are shown in brackets. The values stated in each
system are not necessarily exact equivalents; therefore, to
3. General Requirements
ensure conformance with the standard, each system shall be
3.1 The following sections of Specification B250/B250M
used independently of the other, and values from the two
constitute a part of this specification:
systems shall not be combined.
3.1.1 Terminology;
1.4 The following safety hazard caveat pertains only to the
3.1.2 Material and Manufacturer;
test methods described in this specification:
3.1.3 Chemical Composition;
1.4.1 This standard does not purport to address all of the
3.1.4 Dimensions and Permissible Variations;
safety concerns, if any, associated with its use. It is the
3.1.5 Workmanship, Finish, and Appearance;
responsibility of the user of this standard to establish appro-
3.1.6 Sampling;
priate safety, health, and environmental practices and deter-
3.1.7 Number of Tests and Retests;
mine the applicability of regulatory limitations prior to use.
3.1.8 Specimen Preparation;
3.1.9 Test Methods;
1.5 This international standard was developed in accor-
3.1.10 Significance of Numerical Limits;
dance with internationally recognized principles on standard-
3.1.11 Inspection;
ization established in the Decision on Principles for the
3.1.12 Rejection and Rehearing;
Development of International Standards, Guides and Recom-
3.1.13 Certification;
mendations issued by the World Trade Organization Technical
3.1.14 Test Reports; and
Barriers to Trade (TBT) Committee.
3.1.15 Packaging and Package Marking.
3.2 In addition, when a section with a title identical to that
referenced in 3.1 above, appears in this specification, it
1
ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper
contains additional requirements which supplement those ap-
and CopperAlloys and is the direct responsibility of Subcommittee B05.02 on Rod,
Bar, Wire, Shapes and Forgings.
pearing in Specification B250/B250M.
Current edition approved June 1, 2020. Published June 2020. Originally
approved in 1945. Last previous edition approved in 2013 as B197/B197M – 07
(2013). DOI: 10.1520/B0197_B0197M-20E01.
2 3
The UNS system for copper and copper alloys (see Practice E527) is a simple For referenced ASTM standards, visit the ASTM website, www.astm.org, or
expansion of the former standard designation system accomplished by the addition contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
of a prefix “C” and a suffix “00.” The suffix can be used to accommodate Standards volume information, refer to the standard’s Document Summary page on
composition variations of the base alloy. 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 ----------------------
´1
B197/B197M−20
4. Terminology established and analysis required by agreement between the
manufacturer or supplier and purchaser.
4.1 For definitions of terms related to copper
...