ASTM B455/B455M-20

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Designation: B455 − 10 (Reapproved 2017) B455/B455M − 20
Standard Specification for
Copper-Zinc-Lead Alloy (Leaded-Brass) Extruded Shapes
This standard is issued under the fixed designation B455;B455/B455M; 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 extruded leaded-brass angles, channels, and other architectural shapes of
solid cross section produced in Copper Alloy UNS Nos. C38000 and C38500.
1.1.1 Pipe, tube, or other hollow section products are not included in this specification.
1.2 Units—The values stated in either inch-pound units or SI 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.separately as standard. Within the text, 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.
1.3 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
2.1 ASTM Standards:
B249/B249M Specification for General Requirements for Wrought Copper and Copper-Alloy Rod, Bar, Shapes and Forgings
B601 Classification for Temper Designations for Copper and Copper Alloys—Wrought and Cast
B846 Terminology for Copper and Copper Alloys
B950 Guide for Editorial Procedures and Form of Product Specifications for Copper and Copper Alloys
E8/E8M Test Methods for Tension Testing of Metallic Materials
E54 Test Methods for Chemical Analysis of Special Brasses and Bronzes (Withdrawn 2002)
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 B249/B249M constitute a part of this specification:
3.1.1 Terminology,Terminology
3.1.2 Materials and Manufacture,Manufacture
3.1.3 Workmanship, Finish, and Appearance,Appearance
3.1.4 Sampling,Sampling
3.1.5 Number of Tests and Retests,Retests
3.1.6 Specimen Preparation,Preparation
3.1.7 Test Methods,Methods
3.1.8 Significance of Numerical Limits,Limits
3.1.9 Inspection,Inspection
3.1.10 Rejection and Rehearing,Rehearing
3.1.11 Certification,Certification
This specification is under the jurisdiction of ASTM Committee B05 on Copper and Copper Alloys and is the direct responsibility of Subcommittee B05.02 on Rod, Bar,
Wire, Shapes and Forgings.
Current edition approved Oct. 1, 2017April 1, 2020. Published October 2017April 2020. Originally approved in 1967. Last previous edition approved in 20102017 as
B455 – 10.B455–10 (2017). DOI: 10.1520/B0455-10R17.10.1520/B0455_B0455M–20.
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volume information, refer to the standard’s Document Summary page on the ASTM website.
The last approved version of this historical standard is referenced on www.astm.org.
*A Summary of Changes section appears at the end of this standard
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B455/B455M − 20
3.1.12 Mill Test Report, andReport
3.1.13 Packaging and Package Marking.Marking
3.2 In addition, when a section with a title identical to that referenced in 3.1 appears in this specification, it contains additional
information which supplements that appearing in Specification B249/B249M. In case of conflict this specification shall prevail.
4. Terminology
4.1 For definitions of terms related to copper and copper alloys, refer to Terminology B846.
5. Ordering Information
5.1 Include the following information when placing orders for product under this specification, as applicable:
5.1.1 ASTM designation and year of issue (for example, B455 – 01),);
5.1.2 Copper Alloy UNS No. designation (for example, C38000),C38000);
5.1.3 Temper (Section 7),);
5.1.4 Form, dimensions, and tolerances (Section 9),); and
5.1.5 Quantity; total Quantity—total weight or number of pieces for each form, temper, size, and copper alloy.
5.2 The following options are available and shall be specified at the time of placing of the order when required:
5.2.1 Intended end use or application,
5.2.2 Heat identification or traceability details (Specification B249/B249M),
5.2.3 Certification (Specification B249/B249M), and
5.2.4 Mill test report (Specification B249/B249M).
6. Chemical Composition
6.1 The material shall conform to the chemical compositional requirements in Table 1 for the copper alloy UNS No. specified
in the ordering information.
6.1.1 These composition limits do not preclude the presence of other elements. By agreement between the manufacturer and
purchaser, limits will be established and analysis required for unnamed elements.
6.2 For alloys in which zinc is specified as the remainder, either copper or zinc is permitted to be taken as the difference between
the sum of results for all elements analyzed and 100 %. When copper is so determined, that difference value shall conform to the
requirements given in Table 1.
6.3 When all elements specified in Table 1 are determined for the copper alloy UNS No. designated in the ordering information,
the sum of the results shall be 99.5 % minimum.
7. Temper
7.1 The temper of the product furnished to this specification, as defined in Specification B249/B249M, shall be M30 (as hot
extruded).
8. Mechanical Property Requirements
8.1 Tensile Strength Requirements:
8.1.1 The product furnished shall conform to the requirements of Table 2 when tested in accordance with Test Methods E8/E8M.
8.1.2 The te
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