ASTM B271-08e1

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Designation: B271 – 08
Standard Specification for
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Copper-Base Alloy Centrifugal Castings
This standard is issued under the fixed designation B271; 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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´ NOTE—Appendix X1 was editorially corrected in April 2010.
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:
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B824),
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
5. Materials and Manufacture
3. Terminology
5.1 Castings in CopperAlloy UNS No. C95520 are used in
3.1 Definitions of terms relating to copper alloys can be
the heat treated condition only.
found in Terminology B846.
6. Chemical Composition
4. Ordering Information
6.1 The centrifugal castings shall conform to the chemical
4.1 Orders for centrifugal castings under this specification
requirement shown in Table 2 for the Copper Alloy UNS
should include the following information:
Numbers specified in the purchase order.
6.2 These specification limits do not preclude the presence
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ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper
of other elements. Limits may be established and analysis
and Copper Alloys and is the direct responsibility of Subcommittee B05.05 on
required for unnamed elements agreed upon between the
Castings and Ingots for Remelting.
manufacturer or supplier and the purchaser. Copper or zinc
Current edition approved Oct. 1, 2008. Published November 2008. Originally
approved in 1954. Last previous edition approved in 2006 as B271 – 06. DOI:
may be given as remainder and may be taken as the difference
10.1520/B0271-08E01.
betweenthesumofallelementsanalyzedand100 %.Whenall
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
named elements in Table 2 are analyzed, their sum shall be as
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on specified in Table 3.
the ASTM website.
*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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B271 – 08
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 commercial No. 1 yellow brass 67
...