ASTM B61-15(2021)

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.
Designation: B61 −15 (Reapproved 2021)
Standard Specification for
Steam or Valve Bronze Castings
This standard is issued under the fixed designation B61; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* E527 Practice for Numbering Metals and Alloys in the
2 Unified Numbering System (UNS)
1.1 This specification establishes requirements for a high-
2.2 ASME Code:
grade steam-metal or valve-bronze alloy (Copper Alloy UNS
ASME Boiler and Pressure Vessel Code
No. C92200 ) used for component castings of valves, flanges,
2.3 MSS Standard:
and fittings.
SP-25 Standard Marking System for Valves, Fittings,
1.2 The castings covered are used in products that may be
Flanges and Unions
manufactured in advance and supplied from stock by the
manufacturer or other dealer.
3. General Requirements
1.3 The values stated in inch-pound units are to be regarded
3.1 The following sections of Specification B824 form a
as standard. The values given in parentheses are mathematical
part of this specification. In the event of a conflict between this
conversions to SI units that are provided for information only
specification and Specification B824, the requirements of this
and are not considered standard.
specification shall take precedence.
3.1.1 Terminology (Section 3),
1.4 This international standard was developed in accor-
3.1.2 Other Requirements (Section 7),
dance with internationally recognized principles on standard-
3.1.3 Dimensions, Mass, and Permissible Variations (Sec-
ization established in the Decision on Principles for the
tion 8),
Development of International Standards, Guides and Recom-
3.1.4 Workmanship, Finish, and Appearance (Section 9),
mendations issued by the World Trade Organization Technical
3.1.5 Sampling (Section 10),
Barriers to Trade (TBT) Committee.
3.1.6 Number of Tests and Retests (Section 11),
2. Referenced Documents
3.1.7 Specimen Preparation (Section 12),
3.1.8 Test Methods (Section 13),
2.1 ASTM Standards:
3.1.9 Significance of Numerical Limits (Section 14),
B208 Practice for Preparing Tension Test Specimens for
3.1.10 Inspection (Section 15),
Copper Alloy Sand, Permanent Mold, Centrifugal, and
3.1.11 Rejection and Rehearing (Section 16),
Continuous Castings
3.1.12 Certification (Section 17),
B824 Specification for General Requirements for Copper
3.1.13 Test Report (Section 18),
Alloy Castings
3.1.14 Product Marking (Section 19), and
B846 Terminology for Copper and Copper Alloys
3.1.15 Packaging and Package Marking (Section 20).
4. Terminology
This practice is under the jurisdiction ofASTM Committee B05 on Copper and
CopperAlloys and is the direct responsibility of Subcommittee B05.05 on Castings
4.1 For definitions of terms relating to copper and copper
and Ingots for Remelting.
alloys, refer to Terminology B846.
Current edition approved Oct. 1, 2021. Published October 2021. Originally
approved in 1927. Last previous edition approved in 2015 as B61 – 15. DOI:
5. Ordering Information
10.1520/B0061-15R21.
For ASME Boiler and Pressure Vessel Code applications, see related Specifi-
5.1 Include the following information when placing orders
cation SB-61 of that Code.
3 for castings under this specification:
The UNS system for copper and copper alloys (see Practice E527) is a simple
expansion of the former standard designation system accomplished by the addition
of a prefix “C” and a suffix “00.” The suffix can be used to accommodate
composition variations of the base alloy. Available from American Society of Mechanical Engineers (ASME), ASME
For referenced ASTM standards, visit the ASTM website, www.astm.org, or International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM www.asme.org.
Standards volume information, refer to the standard’s Document Summary page on Available from Manufacturers Standardization Society (MSS) of the Valve and
the ASTM website. Fittings Industry, 127 Park St., NE,Vienna,VA22180-4602, http://www.msshq.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
B61 − 15 (2021)
5.1.1 Quantity of castings required, purchaser. Copper or zinc may be given as remainder and may
5.1.2 Copper Alloy UNS No. (Table 1), be taken as the difference between the sum of all elements
5.1.3 Specification title, number, and year of issue, analyzed and 100 %. When all named elements in Table 1 are
5.1.4 Pattern or drawing number and condition (as-cast, analyzed, their sum shall be as follows:
machined),
Copper plus named elements, 99.3% minimum. (1)
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