ASTM B21/B21M-06

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Designation: B21/B21M – 06
Standard Specification for
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Naval Brass Rod, Bar, and Shapes
This standard is issued under the fixed designation B21/B21M; 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* B858 Test Method for Ammonia Vapor Test for Determin-
ing Susceptibility to Stress Corrosion Cracking in Copper
1.1 This specification establishes the requirements for naval
Alloys
brass rod, bar, and shapes produced from Copper Alloy UNS
E8 Test Methods for Tension Testing of Metallic Materials
Nos. C46200, C46400, C47940, C48200, or C48500.
E8M Test Methods for Tension Testing of Metallic Materi-
1.1.1 For piston-finish rod or shafting refer to the Other
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als [Metric]
Requirements Section.
E18 Test Methods for Rockwell Hardness of Metallic Ma-
1.1.2 For hot forging material, refer to Specification B124/
terials
B124M.
E478 TestMethodsforChemicalAnalysisofCopperAlloys
1.2 Units—The values stated in inch-pound units or SI units
are to be regarded separately as standard. Within the text, SI
3. General Requirements
units are shown in brackets. The values in each system are not
3.1 The following sections of Specification B249/B249M
exact equivalents; therefore, each system shall be used inde-
constitute a part of this specification:
pendentlyoftheother.Combiningvaluesfromthetwosystems
3.1.1 Terminology,
may result in nonconformance with the specification.
3.1.2 Materials and Manufacture,
1.3 Warning—Mercury is a definite health hazard in use
3.1.3 Workmanship, Finish, and Appearance,
and disposal (see Performance Requirements).
3.1.4 Sampling,
1.4 This standard does not purport to address all of the
3.1.5 Number of Tests and Retests,
safety concerns, if any, associated with its use. It is the
3.1.6 Specimen Preparation,
responsibility of the user of this standard to establish appro-
3.1.7 Test Methods,
priate safety and health practices and determine the applica-
3.1.8 Significance of Numerical Limits,
bility of regulatory limitations prior to use.
3.1.9 Inspection,
2. Referenced Documents 3.1.10 Rejection and Rehearing,
2 3.1.11 Certification,
2.1 ASTM Standards:
3.1.12 Mill Test Report,
B124/B124M Specification for Copper and Copper Alloy
3.1.13 Packaging and Product Marking, and
Forging Rod, Bar, and Shapes
3.1.14 Supplementary Requirements.
B154 Test Method for Mercurous Nitrate Test for Copper
3.2 In addition, when a section with a title identical to that
Alloys
referenced in 3.1, above, appears in this specification, it
B249/B249M Specification for General Requirements for
contains additional requirements which supplement those ap-
Wrought Copper and Copper-Alloy Rod, Bar, Shapes and
pearing in Specification B249/B249M.
Forgings
B601 Classification for Temper Designations for Copper
4. Ordering Information
and Copper Alloys—Wrought and Cast
4.1 Include the following information when placing orders
for product under this specification, as applicable:
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ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper 4.1.1 ASTM designation and year of issue,
and CopperAlloys and is the direct responsibility of Subcommittee B05.02 on Rod,
4.1.2 Copper Alloy UNS No. designation (Scope),
Bar, Wire, Shapes and Forgings.
4.1.3 Temper (Temper Section and related Tables),
Current edition approved Feb. 1, 2006. Published February 2006. Originally
´1
4.1.4 Form—cross-section such as round, hexagonal,
approved in 1918. Last previous edition approved in 2001 as B21/B21M – 01 .
DOI: 10.1520/B0021_B0021M-06.
square, and so forth,
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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
3
Standards volume information, refer to the standard’s Document Summary page on Withdrawn. The last approved version of this historical standard is referenced
the ASTM website. on www.astm.org.
*ASummary 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.
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B21/B21M – 06
4.1.5 Diameter or distance between parallel surfaces, width 7. Mechanical Property Requirements
and thickness (Dimensions and Permissible Variations),
7.1 Product furnished under this specification shall conform
4.1.6 Length (Dimensions and Permissible Variations),
to the mechanical property requirements prescribed in Tables
4.1.7 Edge contours (Dimensions and Permissible Varia-
2-4.
tions),
7.1.1 Rockwell Hardness Requirements—For the alloys and
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4.1.8 Quantity—number of pieces or total weight, for each
...