ASTM B271/B271M-11e1

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Designation:B271/B271M −11
StandardSpecification for
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Copper-Base Alloy Centrifugal Castings
This standard is issued under the fixed designation B271/B271M; 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.
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ε NOTE—Designation was corrected editorially in October 2013.
1. Scope* 4.1.1 Specification title, number, and year of issue,
4.1.2 Quantity (length or number) of castings,
1.1 This specification establishes requirements for centrifu-
4.1.3 Copper Alloy UNS Number (Table 1) and temper
gal castings of copper-base alloys having the nominal compo-
(as-cast, heat-treated, and so forth),
sitions shown in Table 1.
4.1.4 Dimensions or drawing number and condition (as-
1.2 The values stated in either SI units or inch-pound units
cast, machined, and so forth),
are to be regarded separately as standard. The values stated in
4.1.5 ASME Boiler and Pressure Vessel Code requirements
each system may not be exact equivalents; therefore, each
(Section 9),
system shall be used independently of the other. Combining
4.1.6 When castings are purchased for agencies of the U.S.
values from the two systems may result in non-conformance
Government,theSupplementaryRequirementsinSpecification
with the standard.
B824 may be specified.
2. Referenced Documents
4.2 The following are optional and should be specified in
the purchase order when required:
2.1 The following documents in the current issue of the
4.2.1 Chemical analysis of residual elements (Section 6.3),
BookofStandardsformapartofthisspecificationtotheextent
4.2.2 Pressure test or soundness requirements (Specification
referenced herein:
B824),
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2.2 ASTM Standards:
4.2.3 Approval of weld repair (Section 8),
B208 Practice for Preparing Tension Test Specimens for
4.2.4 Certification (Specification B824),
Copper Alloy Sand, Permanent Mold, Centrifugal, and
4.2.5 Foundry test report (Specification B824),
Continuous Castings
4.2.6 Witness inspection (Specification B824),
B824 Specification for General Requirements for Copper
4.2.7 Product marking (Specification B824), and
Alloy Castings
4.2.8 Castings for seawater service (Section X1.2).
B846 Terminology for Copper and Copper Alloys
3. Terminology
5. Materials and Manufacture
3.1 Definitions of terms relating to copper alloys can be
5.1 Castings in Copper Alloy UNS No. C95520 are used in
found in Terminology B846.
the heat treated condition only.
4. Ordering Information
6. Chemical Composition
4.1 Orders for centrifugal castings under this specification
6.1 The centrifugal castings shall conform to the chemical
should include the following information:
requirement shown in Table 2 for the Copper Alloy UNS
Numbers specified in the purchase order.
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ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper
6.2 These specification limits do not preclude the presence
and Copper Alloys and is the direct responsibility of Subcommittee B05.05 on
of other elements. Limits may be established and analysis
Castings and Ingots for Remelting.
required for unnamed elements agreed upon between the
Current edition approved Oct. 1, 2011. Published November 2011. Originally
manufacturer or supplier and the purchaser. Copper or zinc
approved in 1954. Last previous edition approved in 2008 as B271 – 08. DOI:
10.1520/B0271_B0271M-11E01.
may be given as remainder and may be taken as the difference
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
between the sum of all elements analyzed and 100 %.When all
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
named elements in Table 2 are analyzed, their sum shall be as
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. specified in Table 3.
*A Summary of Changes section appears at the end of this standard
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B271/B271M−11
TABLE 1 Nominal Compositions
Copper Alloy Commercial Alum- Mang-
Classification Copper Tin Lead Zinc Nickel Iron Silicon
UNS No. Designation inum anese
Leaded red brass C83600 85-5-5-5 85 5 5 5 . . . . .
C83800 83-4-6-7 or commercial red brass 83 4 6 7 . . . . .
Leaded semi-red brass C84400 81-3-7-9 or valve composition 81 3 7 9 . . . . .
1 1 1 1
C84800 76-2 ⁄2-6 ⁄2-15 or semi-red brass 76 2 ⁄2 6 ⁄2 15 . . . . .
Leaded yellow brass C85200 high copper yellow brass 72 1 3 24 . . . . .
C85400 co
...