1、Designation: B 61 02Standard 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-met
3、al 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 the standard. Metric values given in parenthesis are forinformation only.2. Referenced Documents2.1 The following documents of the issue in effect on dateof material purchase form a part of this specification to theextent referenced herein:2.2 ASTM Standards:B 208 Practice for Prep
5、aring Tension Test Specimens forCopper-Base Alloys for Sand, Permanent Mold, Centrifu-gal, and Continuous Castings4B 824 Specification for General Requirements for CopperAlloy Castings4E 527 Practice for Numbering Metals and Alloys (UNS)52.3 MSS Standards:SP-25 Standard Marking System for Valves, Fi
6、ttings,Flanges and Unions63. Ordering Information3.1 Orders for castings under this specification shall includethe following:3.1.1 Quantity of castings required,3.1.2 Copper Alloy UNS No. (Table 1),3.1.3 Specification title, number, and year of issue,3.1.4 Pattern or drawing number and condition (as
7、-cast,machined, and so forth),3.1.5 Chemical analysis of residual elements if specified inthe purchase order (Specification B 824),3.1.6 Pressure test requirements, if specified in the purchaseorder (Specification B 824),3.1.7 Soundness requirements, if specified in the purchaseorder (Specification
8、B 824),3.1.8 Certification, if specified in the purchase order (Speci-fication B 824),3.1.9 Foundry test report, if specified in the purchase order(Specification B 824),3.1.10 Witness inspection, if specified in the purchase order(Specification B 824),3.1.11 ASME boiler and pressure vessel applicati
9、on (Sec-tion 9), and3.1.12 Product marking, if specified in the purchase order(Specification B 824 and Section 10).3.2 When material is purchased for agencies of the U.S.Government, the Supplementary Requirements in SpecificationB 824 may be specified.4. Chemical Composition4.1 The alloy shall confo
10、rm to the chemical requirementsfor major elements specified in Table 1.4.2 These specification limits do not preclude the presenceof other elements. Limits may be established for unnamedelements by agreement between manufacturer or supplier and1This practice is under the jurisdiction of ASTM Committ
11、ee B05 on Copper andCopper Alloys and is the direct responsibility of Subcommittee B05.05 on Castingsand Ingots for Remelting.Current edition approved Dec. 10, 2002. Published February 2003. Originallyapproved in 1927. Discontinued June 2002 and reinstated as B 61 02. Lastprevious edition approved i
12、n 1993 as B 61 93.2For 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 E 527) is a simpleexpansion of the former standard designation system accomplished by the additionof a prefix “C” and a su
13、ffix “00”. The suffix can be used to accommodatecomposition variations of the base alloy.4Annual Book of ASTM Standards, Vol 02.01.5Annual Book of ASTM Standards, Vol 01.01.6Available from Manufacturers Standardization Society of the Valve and FittingsIndustry, 127 Park Street NE, Vienna, VA 22180-4
14、602.1*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, United States.purchaser. Copper or zinc may be given as remainder and maybe taken as the difference between the sum of all elemen
15、tsanalyzed and 100 %. When all named elements in Table 1 areanalyzed, their sum shall be as follows:Copper plus named elements, 99.3 % minimum. (1)4.3 It is recognized that residual elements may be present incast copper base alloys. Analysis shall be made for residualelements only when specified in
16、the purchase order (Specifi-cation B 824).5. Mechanical Properties5.1 Mechanical properties shall be determined from sepa-rately cast test bars and shall meet the requirements shown inTable 2.6. Casting Repair6.1 Castings shall not be plugged, welded, burned-in, orimpregnated.7. General Requirements
17、7.1 Material furnished under this specification shall con-form to the applicable requirements of Specification B 824.8. Sampling8.1 Copper Alloy UNS No. C92200 test bar castings shall becast to the form and dimensions shown in Figs. 2, 3, or 4 ofPractice B 208.9. Certification9.1 When material is sp
18、ecified to meet the requirements ofASME Boiler and Pressure Vessel Code, the certificationrequirements of Specification B 824 are mandatory.10. Product Marking10.1 Valves, flanges, and fittings shall be marked in accor-dance with the latest revision of the Standard Marking Systemfor Valves, Fittings
19、, Flanges, 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.11. Keywords11.1 Navy M castings; steam bronze castings; valve castingsAPPENDIX(Nonmandatory Information)X1. METRIC EQ
20、UIVALENTSX1.1 The SI 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 s
21、econdsquared (N = kgm/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 as
22、MN/m2and N/mm2.TABLE 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 0.05
23、Aluminum 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 (110)Elongation in 2 in. (50.8 mm), min % 24Aksi = 1000 psi.BSee Appendix.CYield strength sh
24、all 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).B61022SUMMARY OF CHANGESCommittee B05 has identified the location of selected changes to this standard since the last issue that mayimpact the use of this standard
25、.1. Paragraph 1.1 was rewritten2. The entire specification was revised to comply with Speci-fication B 824 General Requirements for Copper Alloy Cast-ings.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard.
26、 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 the responsible technical committee and must be reviewed e
27、very 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 careful consideration at a meeting of theresponsible tec
28、hnical 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 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).B61023
