ASTM B271/B271M-18

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it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: B271/B271M − 15 B271/B271M − 18
Standard Specification for
1
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.
1. Scope*
1.1 This specification establishes requirements for centrifugal castings of copper-base alloys having the nominal compositions
shown in Table 1.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the standard.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 The following documents in the current issue of the Book of Standards form a part of this specification to the extent
referenced herein:
2
2.2 ASTM Standards:
B208 Practice for Preparing Tension Test Specimens for Copper Alloy Sand, Permanent Mold, Centrifugal, and Continuous
Castings
B824 Specification for General Requirements for Copper Alloy Castings
B846 Terminology for Copper and Copper Alloys
E10 Test Method for Brinell Hardness of Metallic Materials
3
2.3 ASME Code:
Boiler and Pressure Vessel Code
3. Terminology
3.1 Definitions of terms relating to copper alloys can be found in Terminology B846.
4. Ordering Information
4.1 Orders for centrifugal castings under this specification should include the following information:
4.1.1 Specification title, number, and year of issue,issue;
4.1.2 Quantity (length or number) of castings,castings;
4.1.3 Copper Alloy UNS Number (Table 1) and temper (as-cast, heat-treated, and so forth),forth);
4.1.4 Dimensions or drawing number and condition (as-cast, machined, and so forth),forth);
4.1.5 ASME Boiler and Pressure Vessel Code requirements (Section 9),); and
4.1.6 When castings are purchased for agencies of the U.S. Government, the Supplementary Requirements in Specification
B824 may be specified.
4.2 The following are optional and should be specified in the purchase order when required:
1
This specification is under the jurisdiction of ASTM Committee B05 on Copper and Copper Alloys and is the direct responsibility of Subcommittee B05.05 on Castings
and Ingots for Remelting.
Current edition approved July 1, 2015Oct. 1, 2018. Published July 2015October 2018. Originally approved in 1954. Last previous edition approved in 20142015 as
B271/B271M – 14a.B271/B271M–15. DOI: 10.1520/B0271_B0271M-15.10.1520/B0271_B0271M–18.
2
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 Standards
volume information, refer to the standard’sstandard’s Document Summary page on the ASTM website.
3
Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
www.asme.org.
*A Summary 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
1

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B271/B271M − 18
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 1 3 29 . . . . .
A
Yellow brass C85470 62.5 2.5 . 34.3 . . 0.5 . .
Leaded yellow brass C85700 leaded naval brass 61 1 1 37 . . . . .
Manganese bronze C86100 manganese bronze 67 . . . . 3 5
...

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Designation: B271/B271M − 18
Standard Specification for
1
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.
1. Scope* 3. Terminology
1.1 This specification establishes requirements for centrifu- 3.1 Definitions of terms relating to copper alloys can be
gal castings of copper-base alloys having the nominal compo- found in Terminology B846.
sitions shown in Table 1.
4. Ordering Information
1.2 The values stated in either SI units or inch-pound units
are to be regarded separately as standard. The values stated in 4.1 Orders for centrifugal castings under this specification
each system may not be exact equivalents; therefore, each
should include the following information:
system shall be used independently of the other. Combining 4.1.1 Specification title, number, and year of issue;
values from the two systems may result in non-conformance
4.1.2 Quantity (length or number) of castings;
with the standard. 4.1.3 Copper Alloy UNS Number (Table 1) and temper
(as-cast, heat-treated, and so forth);
1.3 This international standard was developed in accor-
4.1.4 Dimensions or drawing number and condition (as-
dance with internationally recognized principles on standard-
cast, machined, and so forth);
ization established in the Decision on Principles for the
4.1.5 ASME Boiler and Pressure Vessel Code requirements
Development of International Standards, Guides and Recom-
(Section 9); and
mendations issued by the World Trade Organization Technical
4.1.6 When castings are purchased for agencies of the U.S.
Barriers to Trade (TBT) Committee.
Government, the Supplementary Requirements in Specification
2. Referenced Documents B824 may be specified.
2.1 The following documents in the current issue of the
4.2 The following are optional and should be specified in
Book of Standards form a part of this specification to the extent the purchase order when required:
referenced herein:
4.2.1 Pressure test or soundness requirements (Specification
2
B824),
2.2 ASTM Standards:
4.2.2 Approval of weld repair (Section 8),
B208 Practice for Preparing Tension Test Specimens for
4.2.3 Certification (Specification B824),
Copper Alloy Sand, Permanent Mold, Centrifugal, and
4.2.4 Foundry test report (Specification B824),
Continuous Castings
4.2.5 Witness inspection (Specification B824),
B824 Specification for General Requirements for Copper
4.2.6 Product marking (Specification B824), and
Alloy Castings
4.2.7 Castings for seawater service (Section X1.2).
B846 Terminology for Copper and Copper Alloys
E10 Test Method for Brinell Hardness of Metallic Materials
3
5. Materials and Manufacture
2.3 ASME Code:
Boiler and Pressure Vessel Code
5.1 Castings in Copper Alloy UNS No. C95520 are used in
the heat-treated condition only.
1
This specification is under the jurisdiction of ASTM Committee B05 on Copper
6. Chemical Composition
and Copper Alloys and is the direct responsibility of Subcommittee B05.05 on
Castings and Ingots for Remelting.
6.1 The centrifugal castings shall conform to the chemical
Current edition approved Oct. 1, 2018. Published October 2018. Originally
requirement shown in Table 2 for the Copper Alloy UNS
approved in 1954. Last previous edition approved in 2015 as B271/B271M–15.
DOI: 10.1520/B0271_B0271M–18.
Numbers specified in the purchase order.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.2 These specification limits do not preclude the presence
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
of other elements. Limits may be established and analysis
the ASTM website.
required for unnamed elements agreed upon between the
3
Available from American Society of Mechanical Engineers (ASME), ASME
manufacturer or supplier and the purchaser. Copper or zinc
International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
www.asme.org. may be given as remainder and may be taken as the difference
*A Summary 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
1

---------------------- Page: 1 ----------------------
B271/B271M − 18
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
...