1、Designation: B 61 08Standard Specification forSteam or Valve Bronze Castings1This standard is issued under the fixed designation B 61; the number immediately following the designation indicates the year of originaladoption or, in the case of revision, the year of last revision. A number in parenthes
2、es indicates the year of last reapproval. A superscriptepsilon (e) 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. Scope*1.1 This specification2establishes requirements for a high-grade steam-meta
3、l 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-pound units are
4、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:4B 208 Practice for Preparing Tension Test Specimens forCopper Alloy Sand, Permanent Mold
5、, Centrifugal, andContinuous CastingsB 824 Specification for General Requirements for CopperAlloy CastingsB 846 Terminology for Copper and Copper AlloysE 527 Practice for Numbering Metals and Alloys in theUnified Numbering System (UNS)2.2 MSS Standards:SP-25 Standard Marking System for Valves, Fitti
6、ngs,Flanges and Unions53. General Requirements3.1 The following sections of Specification B 824 form apart of this specification. In the event of a conflict between thisspecification and Specification B 824, the requirements of thisspecification shall take precedence.3.1.1 Terminology (Section 3),3.
7、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 (Section 13),
8、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. Terminology4.1
9、 For definitions of terms relating to copper and copperalloys, refer to Terminology B 846.5. 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),5.1.3 Specification
10、 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 B 824),1This practice is under the jurisdiction of ASTM Committee B05 on Copper andCopper Alloys and is the
11、 direct responsibility of Subcommittee B05.05 on Castingsand Ingots for Remelting.Current edition approved April 1, 2008. Published April 2008. Originallyapproved in 1927. Discontinued June 2002 and reinstated as B 61 02. Lastprevious edition approved in 2002 as B 61 02.2For ASME Boiler and Pressure
12、 Vessel Code applications see related Specifi-cation SB-61 of that Code.3The UNS system for copper and copper alloys (see Practice E 527) is a simpleexpansion of the former standard designation system accomplished by the additionof a prefix “C” and a suffix “00”. The suffix can be used to accommodat
13、ecomposition 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 standards Document Summary page onthe ASTM website.5Available from Man
14、ufacturers Standardization Society of the Valve and FittingsIndustry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http:/www.mss-.1*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, U
15、nited States.5.1.6 Pressure test requirements, if specified in the purchaseorder (Specification B 824),5.1.7 Soundness requirements, if specified in the purchaseorder (Specification B 824),5.1.8 Certification, if specified in the purchase order (Speci-fication B 824),5.1.9 Foundry test report, if sp
16、ecified in the purchase order(Specification B 824),5.1.10 Witness inspection, if specified in the purchase order(Specification B 824),5.1.11 ASME boiler and pressure vessel application (Sec-tion 10), and5.1.12 Product marking, if specified in the purchase order(Specification B 824 and Section 11).5.
17、2 When material is purchased for agencies of the U.S.Government, specify the Supplementary Requirements inSpecification B 824.6. 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 elemen
18、ts. Limits may be established for unnamedelements by agreement between manufacturer or supplier 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
19、be as follows:Copper plus named elements, 99.3 % minimum. (1)6.3 It is recognized that residual elements may be present incast copper base alloys. Analysis shall be made for residualelements only when specified in the purchase order (Specifi-cation B 824).7. Mechanical Property Requirements7.1 Mecha
20、nical properties shall be determined from sepa-rately cast test bars and shall meet the requirements 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 dimension
21、s shown in Figs. 2, 3, or 4 ofPractice B 208.10. Certification10.1 When material is specified to meet the requirements ofASME Boiler and Pressure Vessel Code, the certificationrequirements of Specification B 824 are mandatory.11. Product Marking11.1 Valves, flanges, and fittings shall be marked in a
22、ccor-dance with the latest revision of the Standard Marking Systemfor Valves, Fittings, Flanges, and Unions (No. SP-25)oftheManufacturers Standardization Society of the Valve and Fit-tings Industry, and in such position as not to injure theusefulness of the casting.12. Keywords12.1 Navy M castings;
23、steam bronze castings; valve cast-ings; valve bronze; Copper Alloy UNS No. C92200 valves;flanges; fittingsTABLE 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 Elem
24、entsComposition, % max (Except asindicated)Iron 0.25Antimony 0.25Sulfur 0.05Phosphorus 0.05Aluminum 0.005Silicon 0.005AIn determining copper minimum, copper may be calculated as copper plusnickel.TABLE 2 Tensile PropertiesTensile strength, min, ksiA(MPaB) 34 (235)Yield strength,Cmin, ksiA(MPaB) 16 (
25、110)Elongation in 2 in. (50.8 mm), min % 24Aksi = 1000 psi.BSee Appendix.CYield 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. (51 mm).B61082APPENDIX(Nonmandatory Information)X1. METRIC EQUIVALENTSX1.1 The S
26、I unit for strength properties now shown is inaccordance with the International System 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 = k
27、gm/s2). The derived SI unit for pressure orstress is the newton per square metre (N/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.SUMM
28、ARY OF CHANGESCommittee B05 has identified the location of selected changes to this standard since the last issue (B 61 02)that may impact the use of this standard. (Approved April 1, 2008.)(1) A comprehensive five-year review was made, incorporat-ing current proper form and style practices.(2) A Te
29、rminology section was added.(3) The General Requirements Section was updated with morespecific requirements.(4) The Keywords section was updated.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of
30、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 the responsible technical committee and must be reviewed every five
31、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 careful consideration at a meeting of theresponsible technical com
32、mittee, 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 International, 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).B61083
