1、Designation: B61 08 (Reapproved 2013)Standard 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. A num
2、ber in parentheses indicates the year of last reapproval. A superscriptepsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This specification2establishes requirements for a high-gr
3、ade steam-metal or valve-bronze alloy (Copper Alloy UNSNo. C922003) used for component castings of valves, flanges,and fittings.1.2 The castings covered are used in products that may bemanufactured in advance and supplied from stock by themanufacturer or other dealer.1.3 The values stated in inch-po
4、und units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.2. Referenced Documents2.1 ASTM Standards:4B208 Practice for Preparing Tension Test Specimens forCopper Alloy Sand, P
5、ermanent Mold, Centrifugal, andContinuous CastingsB824 Specification for General Requirements for CopperAlloy CastingsB846 Terminology for Copper and Copper AlloysE527 Practice for Numbering Metals and Alloys in theUnified Numbering System (UNS)2.2 MSS Standards:SP-25 Standard Marking System for Val
6、ves, Fittings,Flanges and Unions53. General Requirements3.1 The following sections of Specification B824 form apart of this specification. In the event of a conflict between thisspecification and Specification B824, the requirements of thisspecification shall take precedence.3.1.1 Terminology (Secti
7、on 3),3.1.2 Other Requirements (Section 7),3.1.3 Dimensions, Mass, and Permissible Variations (Sec-tion 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),3.1.8 Test Methods (Sect
8、ion 13),3.1.9 Significance of Numerical Limits (Section 14),3.1.10 Inspection (Section 15),3.1.11 Rejection and Rehearing (Section 16),3.1.12 Certification (Section 17),3.1.13 Test Report (Section 18),3.1.14 Product Marking (Section 19), and3.1.15 Packaging and Package Marking (Section 20).4. Termin
9、ology4.1 For definitions of terms relating to copper and copperalloys, refer to Terminology B846.5. Ordering Information5.1 Include the following information when placing ordersfor castings under this specification:5.1.1 Quantity of castings required,5.1.2 Copper Alloy UNS No. (Table 1),1This practi
10、ce is under the jurisdiction of ASTM Committee B05 on Copper andCopper Alloys and is the direct responsibility of Subcommittee B05.05 on Castingsand Ingots for Remelting.Current edition approved Oct. 1, 2013. Published November 2013. Originallyapproved in 1927. Last previous edition approved in 2008
11、 as B61 08. DOI:10.1520/B0061-08R13.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SB-61 of that Code.3The UNS system for copper and copper alloys (see Practice E527) is a simpleexpansion of the former standard designation system accomplished by the additionof a pr
12、efix “C” and a suffix “00”. The suffix can be used to accommodatecomposition variations of the base alloy.4For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standa
13、rds Document Summary page onthe ASTM website.5Available from Manufacturers Standardization Society of the Valve and FittingsIndustry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http:/www.mss-.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. Unit
14、ed States15.1.3 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 inthe purchase order (Specification B824),5.1.6 Pressure test requirements, if specified in the purchaseorder (Spe
15、cification B824),5.1.7 Soundness requirements, if specified in the purchaseorder (Specification B824),5.1.8 Certification, if specified in the purchase order (Speci-fication B824),5.1.9 Foundry test report, if specified in the purchase order(Specification B824),5.1.10 Witness inspection, if specifie
16、d in the purchase order(Specification B824),5.1.11 ASME boiler and pressure vessel application (Sec-tion 10), and5.1.12 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.Government, specify the Supplementary
17、Requirements inSpecification B824.6. Chemical Composition6.1 The alloy shall conform to the chemical requirementsspecified in Table 1.6.2 These specification limits do not preclude the presenceof other elements. Limits may be established for unnamedelements by agreement between manufacturer or suppl
18、ier andpurchaser. Copper or zinc may be given as remainder and maybe taken as the difference between the sum of all elementsanalyzed and 100 %. When all named elements in Table 1 areanalyzed, their sum shall be as follows:Copper plus named elements, 99.3% minimum. (1)6.3 It is recognized that residu
19、al elements may be present incast copper base alloys. Analysis shall be made for residualelements only when specified in the purchase order (Specifi-cation B824).7. Mechanical Property Requirements7.1 Mechanical properties shall be determined from sepa-rately cast test bars and shall meet the requir
20、ements shown inTable 2.8. Casting Repair8.1 Castings shall not be plugged, welded, burned-in, orimpregnated.9. Sampling9.1 CopperAlloy UNS No. C92200 test bar castings shall becast to the form and dimensions shown in Figs. 2, 3, or 4 ofPractice B208.10. Certification10.1 When material is specified t
21、o meet the requirements ofASME Boiler and Pressure Vessel Code, the certificationrequirements of Specification B824 are mandatory.11. Product Marking11.1 Valves, flanges, and fittings shall be marked in accor-dance with the latest revision of the Standard Marking Systemfor Valves, Fittings, Flanges,
22、 and Unions (No. SP-25) of theManufacturers Standardization Society of the Valve and Fit-tings Industry, and in such position as not to injure theusefulness of the casting.12. Keywords12.1 Copper Alloy UNS No. C92200 valves; fittings;flanges; Navy M castings; steam bronze castings; valve cast-ings ;
23、 valve bronzeTABLE 1 Chemical Requirements, Copper Alloy UNS No. C92200Major ElementsComposition, % max (Except asindicated)Copper 86.090.0Tin 5.56.5Lead 1.02.0Zinc 3.05.0Nickel incl Cobalt 1.0AResidual ElementsComposition, % max (Except asindicated)Iron 0.25Antimony 0.25Sulfur 0.05Phosphorus 0.05Al
24、uminum 0.005Silicon 0.005AIn determining copper minimum, copper may be calculated as copper plus nickel.TABLE 2 Tensile PropertiesTensile strength, min, ksiA(MPaB) 34 (235)Yield strength,Cmin, ksiA(MPaB) 16 (110)Elongation in 2 in. (50.8 mm), min % 24Aksi = 1000 psi.BSee Appendix.CYield strength sha
25、ll 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. (51 mm).B61 08 (2013)2APPENDIX(Nonmandatory Information)X1. METRIC EQUIVALENTSX1.1 The SI unit for strength properties now shown is inaccordance with the International Syst
26、em of Units (SI). Thederived SI unit for force is the newton (N), which is defined asthat force which when applied to a body having a mass of onekilogram gives it an acceleration of one metre per secondsquared (N = kgm/s2). The derived SI unit for pressure orstress is the newton per square metre (N/
27、m2), which has beennamed the pascal (Pa) by the General Conference on Weightsand Measures. Since 1 ksi = 6 894 757 Pa the metric equiva-lents are expressed as megapascal (MPa), which is the same asMN/m2and N/mm2.ASTM International takes no position respecting the validity of any patent rights assert
28、ed 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 such rights, are entirely their own responsibility.This standard is subject to revision at any time by t
29、he 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 additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive
30、 careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM Interna
31、tional, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress 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 ASTM website (www.astm.org/COPYRIGHT/).B61 08 (2013)3
