1、Designation: B61 08 (Reapproved 2013)B61 15Standard Specification forSteam or Valve Bronze Castings1This standard is issued under the fixed designation B61; the number immediately following the designation indicates the year of originaladoption or, in the case of revision, the year of last revision.
2、Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon () 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 Scope*1.1 This specification2 establishes requirement
3、s for a high-grade steam-metal or valve-bronze alloy (Copper Alloy UNS No.C922003) used for component castings of valves, flanges, and fittings.1.2 The castings covered are used in products that may be manufactured in advance and supplied from stock by themanufacturer or other dealer.1.3 The values
4、stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.2. Referenced Documents2.1 ASTM Standards:4B208 Practice for Preparing Tension Test Specimens for
5、Copper Alloy Sand, Permanent Mold, Centrifugal, and ContinuousCastingsB824 Specification for General Requirements for Copper Alloy CastingsB846 Terminology for Copper and Copper AlloysE527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)2.2 MSS Standards:5SP-25 Standard
6、 Marking System for Valves, Fittings, Flanges and Unions3. General Requirements3.1 The following sections of Specification B824 form a part of this specification. In the event of a conflict between thisspecification and Specification B824, the requirements of this specification shall take precedence
7、.3.1.1 Terminology (Section 3),3.1.2 Other Requirements (Section 7),3.1.3 Dimensions, Mass, and Permissible Variations (Section 8),3.1.4 Workmanship, Finish, and Appearance (Section 9),3.1.5 Sampling (Section 10),3.1.6 Number of Tests and Retests (Section 11),3.1.7 Specimen Preparation (Section 12),
8、3.1.8 Test Methods (Section 13),3.1.9 Significance of Numerical Limits (Section 14),3.1.10 Inspection (Section 15),3.1.11 Rejection and Rehearing (Section 16),1 This practice is under the jurisdiction of ASTM Committee B05 on Copper and Copper Alloys and is the direct responsibility of Subcommittee
9、B05.05 on Castings andIngots for Remelting.Current edition approved Oct. 1, 2013May 1, 2015. Published November 2013May 2015. Originally approved in 1927. Last previous edition approved in 20082013 asB61 08.B61 08(2013). DOI: 10.1520/B0061-08R13.10.1520/B0061-15.2 For ASME Boiler and Pressure Vessel
10、 Code applications see related Specification SB-61 of that Code.3 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 aprefix “C” and a suffix “00”. The suffix can be used to accommodate compo
11、sition variations of the base alloy.4 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.5 Available from Manufact
12、urers Standardization Society (MSS) of the Valve and Fittings Industry (MSS), Industry, 127 Park St., NE, Vienna, VA 22180-4602,http:/www.mss-.http:/www.msshq.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have bee
13、n made to the previous version. Becauseit 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 versionof the standard as published by ASTM is to be considered the official document
14、.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.1.12 Certification (Section 17),3.1.13 Test Report (Section 18),3.1.14 Product Marking (Section 19), and3.1.15 Packagi
15、ng and Package Marking (Section 20).4. Terminology4.1 For definitions of terms relating to copper and copper alloys, refer to Terminology B846.5. Ordering Information5.1 Include the following information when placing orders for castings under this specification:5.1.1 Quantity of castings required,5.
16、1.2 Copper Alloy UNS No. (Table 1),5.1.3 Specification title, number, and year of issue,5.1.4 Pattern or drawing number and condition (as-cast, machined),5.1.5 Chemical analysis of residual elements if specified in the purchase order (Specification B824),5.1.5 Pressure test requirements, if specifie
17、d in the purchase order (Specification B824),5.1.6 Soundness requirements, if specified in the purchase order (Specification B824),5.1.7 Certification, if specified in the purchase order (Specification B824),5.1.8 Foundry test report, if specified in the purchase order (Specification B824),5.1.9 Wit
18、ness inspection, if specified in the purchase order (Specification B824),5.1.10 ASME boiler and pressure vessel application (Section 10), and5.1.11 Product marking, if specified in the purchase order (Specification B824 and Section 11).5.2 When material is purchased for agencies of the U.S. Governme
19、nt, specify the Supplementary Requirements in SpecificationB824.6. Chemical Composition6.1 The alloy shall conform to the chemical requirements specified in Table 1.6.2 These specification limits do not preclude the presence of other elements. Limits may be established for unnamed elementsby agreeme
20、nt between manufacturer or supplier and purchaser. Copper or zinc may be given as remainder and may be taken asthe difference between the sum of all elements analyzed and 100 %. When all named elements in Table 1 are analyzed, their sumshall be as follows:Copper plus named elements,99.3%minimum. (1)
21、6.3 It is recognized that residual elements may be present in cast copper base alloys. Analysis shall be made for residualelements only when specified in the purchase order (Specification B824).7. Mechanical Property Requirements7.1 Mechanical properties shall be determined from separately cast test
22、 bars and shall meet the requirements shown in Table2.TABLE 1 Chemical Requirements, Copper Alloy UNS No. C92200Major Elements Composition, % max(Except as indicated)Copper 86.090.0Tin 5.56.5Lead 1.02.0Zinc 3.05.0Nickel incl Cobalt 1.0ANickel including Cobalt 1.0AResidual ElementsComposition, % max
23、(Except asindicated)Iron 0.25Antimony 0.25Sulfur 0.05PhosphorusB 0.05Aluminum 0.005Silicon 0.005A In determining copper minimum, copper may be calculated as copper plus nickel.B For continuous castings, phosphorus shall be 1.5 % max.B61 1528. Casting Repair8.1 Castings shall not be plugged, welded,
24、burned-in, or impregnated.9. Sampling9.1 Copper Alloy UNS No. C92200 test bar castings shall be cast to the form and dimensions shown in Figs. 2, 3, or 4 ofPractice B208.10. Certification10.1 When material is specified to meet the requirements of ASME Boiler and Pressure Vessel Code, the certificati
25、onrequirements of Specification B824 are mandatory.11. Product Marking11.1 Valves, flanges, and fittings shall be marked in accordance with the latest revision of the Standard Marking System forValves, Fittings, Flanges, and Unions (No. SP-25) of the Manufacturers Standardization Society of the Valv
26、e and Fittings Industry,and in such position as not to injure the usefulness of the casting.12. Keywords12.1 CopperAlloy UNS No. C92200 valves; fittings; flanges; Navy M castings; steam bronze castings; valve castings ; castings;valve bronzeAPPENDIX(Nonmandatory Information)X1. METRIC EQUIVALENTSX1.
27、1 The SI unit for strength properties now shown is in accordance with the International System of Units (SI). The derived SIunit for force is the newton (N), which is defined as that force which when applied to a body having a mass of one kilogram givesit an acceleration of one metre per second squa
28、red (N = kgms2). The derived SI unit for pressure or stress is the newton per squaremetre (N/m2), which has been named the pascal (Pa) by the General Conference on Weights and Measures. Since 1 ksi = 6 894 757Pa the metric equivalents are expressed as megapascal (MPa), which is the same as MN/m2 and
29、 N/mm2.SUMMARY OF CHANGESCommittee B05 has identified the location of selected changes to this standard since the last issue(B6108(2013) that may impact the use of this standard. (Approved May 1, 2015.)(1) Table 1 was revised.(2) Sections 5.1.5 and 6.3 were deleted.TABLE 2 Tensile PropertiesTensile
30、strength, min, ksiA (MPaB ) 34 (235)Yield strength,C min, ksiA (MPaB ) 16 (110)Elongation in 2 in. (50.8 mm), min % 24A ksi = 1000 psi.B See Appendix.C Yield strength shall be determined as the stress producing an elongation underload of 0.5 % that is, 0.01 in. (0.25 mm) in a gage length of 2 in. (5
31、1 mm).B61 153ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of suc
32、h rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn.Your comments are invited either for revision of this standard or for additi
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35、boveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 154
