1、Designation: B 763 08Standard Specification forCopper Alloy Sand Castings for Valve Applications1This standard is issued under the fixed designation B 763; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.
2、A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (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 specification establishes requirements for co
3、pperalloy sand castings for valve applications. Nominal composi-tions of the alloys defined by this specification are shown inTable 1.2NOTE 1This specification does not cover Copper Alloy UNS Nos.C83600, C92200, C96200, and C96400. These alloys are also used invalve applications. They are covered by
4、 the following specifications:C83600: B62C92200: B61C96200: B 369C96400: B 3691.2 The castings produced under this specification are usedin products which may be manufactured in advance andsupplied for sale from stock by the manufacturer.1.3 UnitsThe values stated in inch-pound units are to beregard
5、ed as standard. The values given in parentheses aremathematical conversions to SI units that are provided forinformation only and are not considered standard.2. Referenced Documents2.1 ASTM Standards:3B61 Specification for Steam or Valve Bronze CastingsB62 Specification for Composition Bronze or Oun
6、ce MetalCastingsB 208 Practice for Preparing Tension Test Specimens forCopper Alloy Sand, Permanent Mold, Centrifugal, andContinuous CastingsB 369 Specification for Copper-Nickel Alloy CastingsB 824 Specification for General Requirements for CopperAlloy CastingsE10 Test Method for Brinell Hardness o
7、f Metallic Materi-alsE 527 Practice for Numbering Metals and Alloys in theUnified Numbering System (UNS)3. General Requirements3.1 The following sections of Specification B 824 form apart of this specification.3.1.1 Terminology,3.1.2 Other Requirements,3.1.3 Dimensions, Mass, and Permissible Variati
8、ons,3.1.4 Workmanship, Finish, and Appearance,3.1.5 Sampling,3.1.6 Number of Tests and Retests,3.1.7 Specimen Preparation,3.1.8 Test Methods,3.1.9 Significance of Numerical Limits,3.1.10 Inspection,3.1.11 Rejection and Rehearing,3.1.12 Certification,3.1.13 Test Report,3.1.14 Product Marking,3.1.15 P
9、ackaging and Package Marking, and3.1.16 Supplementary Requirements.4. Ordering Information4.1 Include the following information when placing ordersfor product under this specification, as applicable:4.1.1 Specification title, number, and year of approval,4.1.2 Quantity of castings,4.1.3 Copper Alloy
10、 UNS Number and temper (as-cast,heat-treated, etc.),4.1.4 Pattern or drawing number and condition (as-cast,machined, etc.),1This specification is under the jurisdiction ofASTM Committee B05 on Copperand Copper Alloys and is the direct responsibility of Subcommittee B05.05 onCastings and Ingots for R
11、emelting.Current edition approved April 1, 2008. Published May 2008. Originallyapproved in 1986. Last previous edition approved in 2004 as B 763 04.2The UNS system for copper and copper alloys (see Practice E 527) is a simpleexpansion of the former standard designation system accomplished by the add
12、itionof a prefix “C” and a suffix “00”. The suffix can be used to accommodatecomposition variations of the base alloy.3For 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 t
13、o the standards Document Summary page onthe ASTM website.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.4.1.5 When castings are purchased for agencies of the U.S.Gove
14、rnment, the Supplementary Requirements of Specifica-tion B 824 may be specified.4.2 The following requirements are optional and should bespecified in the purchase order when required.4.2.1 Chemical analysis of residual elements (6.3),4.2.2 Pressure test or soundness requirements (SpecificationB 824)
15、,4.2.3 Approval of weld repair and records of repair (Section10),4.2.4 Certification (Specification B 824),4.2.5 Foundry test report (Specification B 824),4.2.6 Witness inspection (Specification B 824),4.2.7 Product marking (Specification B 824),4.2.8 Castings for seawater service (5.1).5. Materials
16、 and Manufacture5.1 For better corrosion resistance in sea water applications,castings in Copper Alloy UNS No. C95800 shall be given atemper anneal heat treatment at 1250 6 50F (675 6 10C) for6-h minimum. Cooling shall be by the fastest means possiblethat will not cause excessive distortion or crack
17、ing.5.2 Copper Alloy UNS Nos. C94700, C95300, C95400,C95410, and C95500 may be supplied in the heat-treatedcondition to obtain the higher mechanical properties shown inTable 4. Suggested heat treatments for these alloys and copperalloy UNS No. C95520 are given in Table 5. Actual practicemay vary by
18、manufacturer.5.3 Separately cast test bar coupons representing castingsmade in Copper Alloy UNS Nos. C94700HT, C95300HT,C95400HT, C95410HT, and C95500HT shall be heat treatedwith the castings.6. Chemical Composition6.1 The castings shall conform to the requirements formajor elements shown in Table 2
19、.6.2 These specification limits do not preclude the presenceof other elements. Limits may be established and analysisrequired for unnamed elements agreed upon between themanufacturer or supplier and the purchaser. Copper or zincmay be given as remainder and may be taken as the differencebetween the
20、sum of all elements analyzed and 100 %. When allnamed elements in Table 2 are analyzed, their sum shall be asspecified in Table 3.TABLE 1 Nominal CompositionsClassification Copper Alloy UNS No. Commercial Designation Copper Tin Lead Zinc Nickel IronAlumi-numMan-ganeseSili-conBismuthLeaded red brass
21、C83450 88 212 2612 1 . . . . .C83800 83-4-6-7 or commercial red brass 83 4 6 7 . . . . . . . . . . . . . . . . . .Leaded semi-red brass C84400 81-3-7-9 or valve composition 81 3 7 9 . . . . . . . . . . . . . . . . . .C84800 76-212-612-15, or semi-red brass 76 212 612 15 . . . . . .Leaded yellow bras
22、s C85200 high-copper yellow brass 72 1 3 24 . . . . . . . . . . . . . . . . . .C85400 commercial No. 1 yellow brass 67 1 3 29 . . . . . . . . . . . . . . . . . .C85700 leaded naval brass 61 1 1 37 . . . . . . . . . . . . . . . . . .High-strength yellow brass C86200 high-strength manganese bronze 63
23、. . . . . . 27 . . . 3 4 3 . . . . . .C86300 high-strength manganese bronze 61 . . . . . . 27 . . . 3 6 3 . . . . . .C86400 leaded manganese bronze 58 1 1 38 . . . 11212 . .C86500 No. 1 manganese bronze 58 . . . . . . 39 . . . 1 1 1 . . . . . .C86700 leaded manganese bronze 58 1 1 34 . . . 2 2 2 . .
24、 . . . .Silicon bronze and silicon C87300 silicon bronze 95 . . . . . . . . . . . . . . . . . . 1 4 . . .brass C87400 silicon brass 82 . . .12 14 . . . . 312 .C87500 silicon brass 82 . . . . . . 14 . . . . . . . . . . . . 4 . . .C87600 silicon bronze 89 . . . . . . 6 . . . . . . . . . . . . 5 . . .C
25、87610 silicon bronze 92 . . . . . . 4 . . . . . . . . . . . . 4 . . .Bismuth semi-red brass C89844 bismuth brass 8412 4 . 8 . . . . . 3Tin bronze and leaded tin C90300 88-8-0-4, or modified “G” bronze 88 8 . . . 4 . . . . . . . . . . . . . . . . . .bronzeC90500 88-10-0-2, on “G” bronze 88 10 . . . 2
26、 . . . . . . . . . . . . . . . . . .C92300 87-8-1-4, or Navy PC 87 8 1 4 . . . . . . . . . . . . . . . . . .C92600 87-10-1-2 87 10 1 2 . . . . . . . . . . . . . . . . . .High-lead tin bronze C93200 83-7-7-3 83 7 7 3 . . . . . . . . . . . . . . . . . .C93500 85-5-9-1 85 5 9 1 . . . . . . . . . . . .
27、. . . . . .C93700 80-10-10 80 10 10 . . . . . . . . . . . . . . . . . . . . .C93800 78-7-15 78 7 15 . . . . . . . . . . . . . . . . . . . . .C94300 71-5-24 71 5 24 . . . . . . . . . . . . . . . . . . . . .Nickel-tin bronze and C94700 nickel-tin bronze grade “A” 88 5 . . . 2 5 . . . . . . . . . . . .
28、 . . .leaded nickel-tin bronze C94800 leaded nickel-tin bronze grade “B” 87 5 1 2 5 . . . . . . . . . . . . . . .C94900 leaded nickel-tin bronze grade “C” 80 5 5 5 5 . . . . . . . . . . . . . . .Aluminum bronze C95200 Grade A 88 . . . . . . . . . . . . 3 9 . . . . . . . . .C95300 Grade B 89 . . . .
29、. . . . . . . . 1 10 . . . . . . . . .C95400 Grade C 85 . . . . . . . . . . . . 4 11 . . . . . . . . .C95410 84 . . . . . . . . . 2 4 10 . . . . . . . . .Silicon aluminum bronze C95600 Grade E 91 . . . . . . . . . . . . . . . 7 . . . 2 . . .Nickel aluminum bronze C95500 Grade D 81 . . . . . . . . .
30、4 4 11 . . . . . . . . .C95800 81.3 . . . . . . . . . 4.5 4 9 1.2 . . . . . .Leaded nickel bronze C97300 12 % leaded nickel silver 57 2 9 20 12 . . . . . . . . . . . . . . .C97600 20 % leaded nickel silver 64 4 4 8 20 . . . . . . . . . . . . . . .C97800 25 % leaded nickel silver 66 5 2 2 25 . . . .
31、. . . . . . . . . . .Special alloys C99400 87 . . . . . . 4.4 3.0 3.0 1.6 . . . 1.0 . . .C99500 87 . . . . . . 1.5 4.5 4.0 1.7 . . . 1.3 . . .B763082TABLE2ChemicalRequirementsComposition,%max,exceptasindicatedCopperAlloy UNSNo.MajorElementsResidualElementsCopperTinLeadZincIronNickelinclCobaltAlu- mi
32、numManga-neseSili-conBis-muthIronAnti-monyNickelinclCobaltSulfurPhos-phorusAlu- minumManga-neseSili-conLeadC8345087.089.02.03.51.53.05.57.5.0.82.0.0.300.25.0.080.030.005.0.005.C8380082.083.83.34.25.07.05.08.0.1.0A.0.300.25.0.080.030.005.0.005.C8440078.082.02.33.56.08.07.010.0.1.0A.0.400.25.0.080.020
33、.005.0.005.C8480075.077.02.03.05.57.013.017.0.1.0A.0.400.25.0.080.020.005.0.005.C8520070.074.00.72.01.53.820.027.0.0.60.201.00.050.020.005.0.05.C8540065.070.00.501.51.53.824.032.0.0.7.1.0.0.35.0.05.C8570058.064.00.501.50.81.532.040.0.0.7.1.0.0.8.0.05.C8620060.066.00.200.2022.028.02.04.0.3.04.92.55.0
34、.1.0.C8630060.066.00.200.2022.028.02.04.0.5.07.52.55.0.1.0.C8640056.062.00.501.50.501.534.042.00.402.0.0.501.50.101.5.1.0.C8650055.060.01.00.4036.042.00.402.0.0.501.50.101.5.1.0.C8670055.060.01.50.501.530.038.01.03.0.1.03.01.03.5.1.0.C8730094.0min.0.200.25.0.81.53.55.0.0.20.C8740079.0min.1.012.016.0
35、.2.54.0.0.8.C8750079.0min.0.5012.016.0.3.05.0.0.50.C8760088.0min.0.504.07.00.20.3.55.5.0.25.C8761090.0min.0.093.05.00.20.3.05.0.0.25.C8984483.086.03.05.0.7.010.0.1.0A.2.04.00.300.25.0.080.050.005.0.0050.20C9030086.089.07.59.00.303.05.0.1.0A.0.200.20.0.050.050.005.0.005.C9050086.089.09.011.00.301.03.
36、0.1.0A.0.200.20.0.050.050.005.0.005.C9230085.089.07.59.00.301.02.55.0.1.0A.0.250.25.0.050.050.005.0.005.C9260086.088.59.310.50.81.51.32.5.0.7A.0.200.25.0.050.030.005.0.005.C9320081.085.06.37.56.08.01.04.0.1.0A.0.200.35.0.080.150.005.0.005.C9350083.086.04.36.08.010.02.0.1.0A.0.200.30.0.080.050.005.0.
37、005.C9370078.082.09.011.08.011.00.8.0.50A.0.70.50.0.080.100.005.0.005.C9380075.079.06.37.513.016.00.8.1.0A.0.150.8.0.080.050.005.0.005.C9430067.072.04.56.023.027.00.8.1.0A.0.150.8.0.080.080.005.0.005.C9470085.090.04.56.00.09B1.02.5.4.56.0.0.250.15.0.050.050.0050.200.005.C9480084.089.04.56.00.301.01.
38、02.5.4.56.0.0.250.15.0.050.050.0050.200.005.C9490079.081.04.06.04.06.04.06.0.4.06.0.0.300.25.0.080.050.0050.100.005.C9520086.0min.2.54.0.8.59.5.C9530086.0min.0.81.5.9.011.0.C9540083.0min.3.05.01.510.011.50.50.C9541083.0min.3.05.01.52.510.011.50.50.C9550078.0min.3.05.03.05.510.011.53.5.C9560088.0min.
39、0.256.08.0.1.83.2.C9580079.0min.0.03.3.54.5C4.05.0C8.59.50.81.5.0.10.C9730053.058.01.53.08.011.017.025.01.511.014.0.0.35.0.080.050.0050.500.15.C9760063.067.03.54.53.05.03.09.01.519.021.5.0.25.0.080.050.0051.00.15.C9780064.067.04.05.51.02.51.04.01.524.027.0.0.20.0.080.050.0051.00.15.C99400remainder.0
40、.250.55.01.03.01.03.50.52.00.500.52.0.C99500remainder.0.250.52.03.05.03.55.50.52.00.500.52.0.AIndeterminingcopperminimumcoppermaybecalculatedascopperplusnickel.BItispossiblethatthemechanicalrequirementsofCopperAlloyUNSNo.C94700(heattreated)willnotbeobtainediftheleadcontentexceeds0.01%.CIroncontentsh
41、allnotexceedthenickelcontent.B7630836.3 It is recognized that residual elements may be present incast copper alloys. Analysis shall be made for residual ele-ments only when specified in the purchase order.7. Mechanical Properties7.1 Mechanical properties shall be determined from sepa-rately cast tes
42、t bars, and shall conform with the requirementsshown in Table 4.8. Sampling8.1 Copper Alloy UNS Nos. C86200, C86300, C86400,C86500, C86700, C95200, C95300, C95400, C95410,C95500, C95600, C95800, C99400, and C99500 test barcastings shall be cast to the form and dimensions shown inFigs. 1 or 2 of Prac
43、tice B 208. For all other alloys listed in thisspecification test bars shall be cast to the form and dimensionsshown in Figs. 2, 3 or 4 of Practice B 208.9. Test Methods9.1 Analytical chemical methods are given in SpecificationB 824 (Test Methods section).9.2 Brinell hardness readings, if specified
44、on the purchaseorder, shall be taken in the grip end of the tension test bar andshall be made in accordance with Test Method E10, exceptthat a 3000-kg load shall be used.10. Casting Repair10.1 Copper Alloy UNS Nos. C95200, C95300, C95400,C95410, C95500, C95600, and C95800 included in this speci-fica
45、tion are generally weldable. Weld repairs may be made atthe manufacturers discretion provided each excavation doesnot exceed 20 % of the casting section or wall thickness or 4 %of the casting surface area.10.2 Excavations that exceed those described in 10.1 maybe made at the manufacturers discretion except that whenspecified in the ordering information (4.2.3), the weld proce-dure shall be approved by the purchaser and the followingrecords shall be maintained:10.2.1 A sketch or drawing sh
