ASTM B21/B21M-01

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
Designation: B 21/B 21M – 01
Standard Specification for
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Naval Brass Rod, Bar, and Shapes
This standard is issued under the fixed designation B 21/B 21M; 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 Department of Defense.
1. Scope* E18 Test Methods for Rockwell Hardness and Rockwell
3
Superficial Hardness of Metallic Materials
1.1 This specification establishes the requirements for naval
E 478 Test Methods for Chemical Analysis of Copper
brass rod, bar, and shapes produced from Copper Alloys UNS
4
Alloys
No. C46200, C46400, C47940, C48200, or C48500.
1.1.1 For piston-finish rod or shafting refer to the Other
3. General Requirements
Requirements Section.
3.1 The following sections of Specification B 249B 249/
1.1.2 For hot forging material, refer to Specification B 124/
B 249M/B 249M constitute a part of this specification:
B 124MB 124/B 124M.
3.1.1 Terminology,
1.2 Units—The values stated in inch-pound units or SI units
3.1.2 Materials and Manufacture,
are to be regarded separately as standard. Within the text, SI
3.1.3 Workmanship, Finish, and Appearance,
units are shown in brackets. The values in each system are not
3.1.4 Sampling,
exact equivalents; therefore, each system shall be used inde-
3.1.5 Number of Tests and Retests,
pendentlyoftheother.Combiningvaluesfromthetwosystems
3.1.6 Specimen Preparation,
may result in nonconformance with the specification.
3.1.7 Test Methods,
1.3 Warning—Mercury is a definite health hazard in use
3.1.8 Significance of Numerical Limits,
and disposal (see Performance Requirements).
3.1.9 Inspection,
2. Referenced Documents 3.1.10 Rejection and Rehearing,
3.1.11 Certification,
2.1 ASTM Standards:
3.1.12 Mill Test Report,
B 124/B 124M Specification for Copper and Copper-Alloy
2
3.1.13 Packaging and Product Marking, and
Forging Rod, Bar, and Shapes
3.1.14 Supplementary Requirements.
B 154 Test Method for Mercurous Nitrate Test for Copper
2
3.2 In addition, when a section with a title identical to that
and Copper Alloys
referenced in 3.1, above, appears in this specification, it
B 249/B 249M Specification for General Requirements for
contains additional requirements which supplement those ap-
Wrought Copper and Copper-Alloy Rod, Bar, Shapes and
2 pearing in Specification B 249/B 249MB 249/B 249M.
Forgings
B 601 Classification for Temper Designations for Copper
4. Ordering Information
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and Copper Alloys—Wrought and Cast
4.1 Include the following when ordering product under this
B 858 Test Method for Determination of Susceptibility to
specification:
Stress Corrosion Cracking in Copper Alloys Using an
2 4.1.1 ASTM designation and year of issue,
Ammonia Vapor Test
3
4.1.2 Copper Alloy UNS No. designation (Scope),
E8 Test Methods forTensionTesting of Metallic Materials
4.1.3 Temper (Temper Section and related Tables),
E8M Test Method for Tension Testing of Metallic Materi-
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4.1.4 Form: cross-section such as round, hexagonal, square,
als (Metric)
and so forth,
4.1.5 Diameter or distance between parallel surfaces, width
and thickness (Dimensions and Permissible Variations),
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ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper
4.1.6 Length (Dimensions and Permissible Variations),
and CopperAlloys and is the direct responsibility of Subcommittee B05.02 on Rod,
4.1.7 Edge contours (Dimensions and Permissible Varia-
Bar, Wire, Shapes and Forgings.
tions),
Current edition approved April 10, 2001. Published August 2001. Originally
published as B 21 – 18T. Last previous edition B 21 – 00.
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Annual Book of ASTM Standards, Vol 02.01.
3 4
Annual Book of ASTM Standards, Vol 03.01. Annual Book of ASTM Standards, Vol 03.06.
*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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
B 21/B 21M – 01
TABLE 1 Chemical Requirements
4.1.8 Number of pieces or total weight, for each size and
form, and Copper Alloy UNS No.
Element,
%
4.1.9 When product is specified for agencies of the U.S.
C46200 C46400 C47940 C48200 C48500
Government (Purchases for U.S. Government).
Copper 62.0–65.0 59.0–62.0 63.0–66.0 59.0–62.0 59.0–62.0
Tin 0.50–1.0 0.50–1.0 1.2–2.0 0.50–1.0 0.50–1.0
4.2 The following are options available under this specifi-
Lead 0.20 max 0.20 max 1.0–2.0 0.40–1.0 1.3–2.2
catio
...