ASTM B981/B981M-12

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Designation: B981/B981M −12
Standard Specification for
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Low Leaded Brass Rod, Bar and Shapes
This standard is issued under the fixed designation B981/B981M; 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 3. General Requirements
1.1 This specification establishes the requirements for low 3.1 The following sections of Specifications B249/B249M
leaded brass rod, bar, wire, and shapes of any specified cross (rod, bar, and shapes) and B250/B250M (wrought copper alloy
wire) constitute a part of this specification.
section produced from Copper Alloys UNS No. C36300,
C36500, C37000, C37100 and C37700 suitable for high-speed 3.1.1 Terminology,
3.1.2 Materials and Manufacture,
screw machining applications.
3.1.3 Workmanship, Finish, and Appearance,
NOTE 1—Refer to Specification B124/B124M when purchasing bar or
3.1.4 Sampling,
rod for forging production.
3.1.5 Number of Tests and Retest,
1.2 The values stated in either SI units or inch-pound units
3.1.6 Specimen Preparation,
are to be regarded separately as standard. The values stated in
3.1.7 Test Methods,
each system may not be exact equivalents; therefore, each
3.1.8 Significance of Numerical Limits,
system shall be used independently of the other. Combining
3.1.9 Inspection,
values from the two systems may result in non-conformance
3.1.10 Rejection and Rehearing,
with the standard.
3.1.11 Certification,
1.3 This standard does not purport to address all of the
3.1.12 Mill Test Report,
safety concerns, if any, associated with its use. It is the
3.1.13 Packaging and Package Marking, and
responsibility of the user of this standard to establish appro-
3.1.14 Supplementary Requirements.
priate safety and health practices and determine the applica-
3.2 In addition, when a section with a title identical to those
bility of regulatory limitations prior to use.
referenced in 3.1 appears in this specification, it contains
additional requirements that supplement those appearing in
2. Referenced Documents
Specifications B249/B249M and B250/B250M.
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2.1 ASTM Standards:
4. Ordering Information
B124/B124M Specification for Copper and Copper Alloy
Forging Rod, Bar, and Shapes
4.1 Include the following information when placing orders
B249/B249M Specification for General Requirements for
for product under this specification, as applicable:
Wrought Copper and Copper-Alloy Rod, Bar, Shapes and
4.1.1 ASTM specification designation and year of issue
Forgings
(Bxxx/BxxxM – XX).
B250/B250M Specification for General Requirements for
4.1.2 Copper Alloy UNS No. designations (C36300,
Wrought Copper Alloy Wire
C36500, C37000, C37100 and C37700, see Section 6 and
B601 Classification forTemper Designations for Copper and
Table 1.
Copper Alloys—Wrought and Cast
4.1.3 Temper (see Section 7 and Table 2 and Table 3).
E8/E8M Test Methods for Tension Testing of Metallic Ma-
4.1.4 Product cross section form (for example, round,
terials
hexagonal, square, etc.).
4.1.5 Dimensions (see Section 9).
4.1.6 How furnished: straight lengths or coils (see 5.2).
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4.1.7 Edge contours (see Section 9).
This test method is under the jurisdiction ofASTM Committee B05 on Copper
and CopperAlloys and is the direct responsibility of Subcommittee B05.02 on Rod,
4.1.8 Quantity; total weight, footage, or number of pieces
Bar, Wire, Shapes and Forgings.
for each size.
Current edition approved April 1, 2012. Published May 2012. DOI: 10.1520/
B0981_B0981M-12.
4.2 The following options are available and shall be speci-
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
fied at the time of placing the order when required:
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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4.2.1 Tensile test requirement for product ⁄2 in. [12 mm]
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. and over (see 8.2).
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B981/B981M − 12
TABLE 1 Chemical Requirements
Composition (%)
Copper Plus
Copper
Elements with
Alloy Copper Lead Phosphorus Iron Max. Tin Max. Zinc
Specific Limits
UNS No.
Present, min
C36300 61.0 – 63.0 0.25 – 0.7 0.04 – 0.15 0.15 – remainder 99.5
C36500 58.0 – 61.0 0.25 – 0.7 0.15 – remainder 99.6
C37000 59.0 – 62.0 0.8 – 1.5 0.15 – remainder 99.6
C37100 58.0 – 62.0 0.6 – 1.2 0.15 – remainder 99.6
C37700 58.0 – 61.0 1.5 – 2.5 0.30 – remainder 99.5
TABLE 2 Tensile Requirements, inch-pound
NOTE 1—See Table 3 for SI values.
Temper Designation
Diameter or Yield Strengt
...