1、Designation: B 763 08aStandard 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 () 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 either SI units or inch-pound un
5、its are to be regarded separately as standard. Thevalues stated in each system may not be exact equivalents;therefore, each system shall be used independently of the other.Combining values from the two systems may result in non-conformance with the standard.2. Referenced Documents2.1 ASTM Standards:
6、3B61 Specification for Steam or Valve Bronze CastingsB62 Specification for Composition Bronze or Ounce MetalCastingsB 208 Practice for Preparing Tension Test Specimens forCopper Alloy Sand, Permanent Mold, Centrifugal, andContinuous CastingsB 369 Specification for Copper-Nickel Alloy CastingsB 824 S
7、pecification for General Requirements for CopperAlloy CastingsE10 Test Method for Brinell Hardness of 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 spec
8、ification.3.1.1 Terminology,3.1.2 Other Requirements,3.1.3 Dimensions, Mass, and Permissible Variations,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.
9、1.11 Rejection and Rehearing,3.1.12 Certification,3.1.13 Test Report,3.1.14 Product Marking,3.1.15 Packaging 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
10、.1.1 Specification title, number, and year of approval,4.1.2 Quantity of castings,4.1.3 Copper Alloy UNS Number and temper (as-cast,heat-treated, etc.),4.1.4 Pattern or drawing number and condition (as-cast,machined, etc.),4.1.5 When castings are purchased for agencies of the U.S.Government, the Sup
11、plementary 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.1This specification is under the jurisdiction ofASTM Committee B05 on Copperand Copper Alloys and is the direct responsibility of Su
12、bcommittee B05.05 onCastings and Ingots for Remelting.Current edition approved Oct. 1, 2008. Published November 2008. Originallyapproved in 1986. Last previous edition approved in 2008 as B 763 08.2The UNS system for copper and copper alloys (see Practice E 527) is a simpleexpansion of the former st
13、andard designation system accomplished by the additionof 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
14、Book of ASTMStandards volume information, refer to 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.4.2.1 Chemica
15、l analysis of residual elements (6.3),4.2.2 Pressure test or soundness requirements (SpecificationB 824),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
16、 824),4.2.7 Product marking (Specification B 824),4.2.8 Castings for seawater service (5.1).5. Materials 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
17、minimum. Cooling shall be by the fastest means possiblethat will not cause excessive distortion or cracking.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 trea
18、tments for these alloys and copperalloy UNS No. C95520 are given in Table 5. Actual practicemay vary by 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. C
19、hemical Composition6.1 The castings shall conform to the requirements formajor elements shown in Table 2.6.2 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 a
20、nd the purchaser. Copper or zincmay be given as remainder and may be taken as the differencebetween the 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. Co
21、mmercial Designation Copper Tin Lead Zinc Nickel IronAlumi-numMan-ganeseSili-conBismuth SeleniumLeaded red brass 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 . . .
22、 . . . . . . . . . . . . . . .C84800 76-212-612-15, or semi-red brass 76 212 612 15 . . . . . .Leaded yellow brass C85200 high-copper yellow brass 72 1 3 24 . . . . . . . . . . . . . . . . . .C85400 commercial No. 1 yellow brass 67 1 3 29 . . . . . . . . . . . . . . . . . .C85700 leaded naval brass
23、61 1 1 37 . . . . . . . . . . . . . . . . . .High-strength yellow brass C86200 high-strength manganese bronze 63 . . . . . . 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 m
24、anganese bronze 58 . . . . . . 39 . . . 1 1 1 . . . . . .C86700 leaded manganese bronze 58 1 1 34 . . . 2 2 2 . . . . . .Silicon bronze and silicon C87300 silicon bronze 95 . . . . . . . . . . . . . . . . . . 1 4 . . .brass C87400 silicon brass 82 . . .12 14 . . . . 312 .C87500 silicon brass 82 . .
25、. . . . 14 . . . . . . . . . . . . 4 . . .C87600 silicon bronze 89 . . . . . . 6 . . . . . . . . . . . . 5 . . .C87610 silicon bronze 92 . . . . . . 4 . . . . . . . . . . . . 4 . . .C89530 Bismuth-Selenium 86.5 4.7 8.0 1.5 .20C89535 Bismuth 86.5 3.0 7.0 .65 1.4Bismuth semi-red brass C89844 bismuth b
26、rass 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 . . . . . . . . . . . . . . . . . .C92300 87-8-1-4, or Navy PC 87 8 1 4 . . . . . . . . . . . . . . . . . .
27、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 . . . . . . . . . . . . . . . . . .C93700 80-10-10 80 10 10 . . . . . . . . . . . . . . . . . . . . .C93800 78-7-15 78 7 15 . . . .
28、. . . . . . . . . . . . . . . . .C94300 71-5-24 71 5 24 . . . . . . . . . . . . . . . . . . . . .Nickel-tin bronze and C94700 nickel-tin bronze grade “A” 88 5 . . . 2 5 . . . . . . . . . . . . . . .leaded nickel-tin bronze C94800 leaded nickel-tin bronze grade “B” 87 5 1 2 5 . . . . . . . . . . . .
29、. . .C94900 leaded nickel-tin bronze grade “C” 80 5 5 5 5 . . . . . . . . . . . . . . .Aluminum bronze C95200 Grade A 88 . . . . . . . . . . . . 3 9 . . . . . . . . .C95300 Grade B 89 . . . . . . . . . . . . 1 10 . . . . . . . . .C95400 Grade C 85 . . . . . . . . . . . . 4 11 . . . . . . . . .C95410
30、 84 . . . . . . . . . 2 4 10 . . . . . . . . .Silicon aluminum bronze C95600 Grade E 91 . . . . . . . . . . . . . . . 7 . . . 2 . . .Nickel aluminum bronze C95500 Grade D 81 . . . . . . . . . 4 4 11 . . . . . . . . .C95800 81.3 . . . . . . . . . 4.5 4 9 1.2 . . . . . .Leaded nickel bronze C97300 12
31、% 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 . . . . . . . . . . . . . . .Special alloys C99400 87 . . . . . . 4.4 3.0 3.0 1.6 . . . 1.0 . . .C99500 87 . . . . .
32、 . 1.5 4.5 4.0 1.7 . . . 1.3 . . .B 763 08a2TABLE 2 Chemical RequirementsComposition, % max, except as indicatedCopperAlloyUNSNo.Major Elements Residual ElementsCopper Tin Lead Zinc IronNickelinclCobaltAlu-minumManga-neseSili-conBis-muthSelenium IronAnti-monyNickelinclCobaltSulfurPhos-phorusAlu-minu
33、mManga-neseSili-conLeadC83450 87.089.0 2.03.5 1.53.0 5.57.5 . . . 0.82.0 . . . . . . . . . . . . 0.30 0.25 . . . 0.08 0.03 0.005 . . . 0.005 . . .C83800 82.083.8 3.34.2 5.07.0 5.08.0 . . . 1.0A. . . . . . . . . . . . 0.30 0.25 . . . 0.08 0.03 0.005 . . . 0.005 . . .C84400 78.082.0 2.33.5 6.08.0 7.01
34、0.0 . . . 1.0A. . . . . . . . . . . . 0.40 0.25 . . . 0.08 0.02 0.005 . . . 0.005 . . .C84800 75.077.0 2.03.0 5.57.0 13.017.0 . . . 1.0A. . . . . . . . . . . . 0.40 0.25 . . . 0.08 0.02 0.005 . . . 0.005 . . .C85200 70.074.0 0.72.0 1.53.8 20.027.0 . . . . . . . . . . . . . . . . . . 0.6 0.20 1.0 0.0
35、5 0.02 0.005 . . . 0.05 . . .C85400 65.070.0 0.501.5 1.53.8 24.032.0 . . . . . . . . . . . . . . . . . . 0.7 . . . 1.0 . . . . . . 0.35 . . . 0.05 . . .C85700 58.064.0 0.501.5 0.81.5 32.040.0 . . . . . . . . . . . . . . . . . . 0.7 . . . 1.0 . . . . . . 0.8 . . . 0.05 . . .C86200 60.066.0 0.20 0.20
36、22.028.0 2.04.0 . . . 3.04.9 2.55.0 . . . . . . . . . . . . 1.0 . . . . . . . . . . . . . . . . . .C86300 60.066.0 0.20 0.20 22.028.0 2.04.0 . . . 5.07.5 2.55.0 . . . . . . . . . . . . 1.0 . . . . . . . . . . . . . . . . . .C86400 56.062.0 0.501.5 0.501.5 34.042.0 0.402.0 . . . 0.501.5 0.101.5 . . .
37、 . . . . . . . . . 1.0 . . . . . . . . . . . . . . . . . .C86500 55.060.0 1.0 0.40 36.042.0 0.402.0 . . . 0.501.5 0.101.5 . . . . . . . . . . . . 1.0 . . . . . . . . . . . . . . . . . .C86700 55.060.0 1.5 0.501.5 30.038.0 1.03.0 . . . 1.03.0 1.03.5 . . . . . . . . . . . . 1.0 . . . . . . . . . . . .
38、 . . . . . .C87300 94.0 min . . . 0.09 0.25 . . . . . . . . . 0.81.5 3.55.0 . . . 0.20 . . . . . . . . . . . . . . . . . . . . . . . .C87400 79.0 min . . . 1.0 12.016.0 . . . . . . . . . . . . 2.54.0 . . . . . . . . . . . . . . . . . . 0.8 . . . . . . . . .C87500 79.0 min . . . 0.09 12.016.0 . . . .
39、 . . . . . . . . 3.05.0 . . . . . . . . . . . . . . . . . . 0.50 . . . . . . . . .C87600 88.0 min . . . 0.09 4.07.0 0.20 . . . . . . . . . 3.55.5 . . . . . . . . . . . . . . . . . . . . . 0.25 . . . . . .C87610 90.0 min . . . 0.09 3.05.0 0.20 . . . . . . . . . 3.05.0 . . . . . . . . . . . . . . . .
40、. . . . . 0.25 . . . . . .C89530 84.089.0 3.56.0 .20 7.09.0 . . . 1.0 . . . . . . . . . 1.02.0 .10.30 .30 .20 . . . . . . .05 .01 . . . .01 . . .C89535 84.089.0 2.55.5 .25 5.09.0 . . . .301.0 . . . . . . . . . .82.0 .50 .30 .20 . . . . . . .10.40 .01 . . . .01 . . .C89844 83.086.0 3.05.0 . . . 7.010
41、.0 . . . 1.0A. . . . . . . . . 2.04.0 0.30 0.25 . . . 0.08 0.05 0.005 . . . 0.005 0.20C90300 86.089.0 7.59.0 0.30 3.05.0 . . . 1.0A. . . . . . . . . . . . 0.20 0.20 . . . 0.05 0.05 0.005 . . . 0.005 . . .C90500 86.089.0 9.011.0 0.30 1.03.0 . . . 1.0A. . . . . . . . . . . . 0.20 0.20 . . . 0.05 0.05
42、0.005 . . . 0.005 . . .C92300 85.089.0 7.59.0 0.301.0 2.55.0 . . . 1.0A. . . . . . . . . . . . 0.25 0.25 . . . 0.05 0.05 0.005 . . . 0.005 . . .C92600 86.088.5 9.310.5 0.81.5 1.32.5 . . . 0.7A. . . . . . . . . . . . 0.20 0.25 . . . 0.05 0.03 0.005 . . . 0.005 . . .C93200 81.085.0 6.37.5 6.08.0 1.04.
43、0 . . . 1.0A. . . . . . . . . . . . 0.20 0.35 . . . 0.08 0.15 0.005 . . . 0.005 . . .C93500 83.086.0 4.36.0 8.010.0 2.0 . . . 1.0A. . . . . . . . . . . . 0.20 0.30 . . . 0.08 0.05 0.005 . . . 0.005 . . .C93700 78.082.0 9.011.0 8.011.0 0.8 . . . 0.50A. . . . . . . . . . . . 0.7 0.50 . . . 0.08 0.10 0
44、.005 . . . 0.005 . . .C93800 75.079.0 6.37.5 13.016.0 0.8 . . . 1.0A. . . . . . . . . . . . 0.15 0.8 . . . 0.08 0.05 0.005 . . . 0.005 . . .C94300 67.072.0 4.56.0 23.027.0 0.8 . . . 1.0A. . . . . . . . . . . . 0.15 0.8 . . . 0.08 0.08 0.005 . . . 0.005 . . .C94700 85.090.0 4.56.0 0.09B1.02.5 . . . 4
45、.56.0 . . . . . . . . . . . . 0.25 0.15 . . . 0.05 0.05 0.005 0.20 0.005 . . .C94800 84.089.0 4.56.0 0.301.0 1.02.5 . . . 4.56.0 . . . . . . . . . . . . 0.25 0.15 . . . 0.05 0.05 0.005 0.20 0.005 . . .C94900 79.081.0 4.06.0 4.06.0 4.06.0 . . . 4.06.0 . . . . . . . . . . . . 0.30 0.25 . . . 0.08 0.05
46、 0.005 0.10 0.005 . . .C95200 86.0 min . . . . . . . . . 2.54.0 . . . 8.59.5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C95300 86.0 min . . . . . . . . . 0.81.5 . . . 9.011.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C95400 83.0 min . . . . .
47、. . . . 3.05.0 1.5 10.011.5 0.50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C95410 83.0 min . . . . . . . . . 3.05.0 1.52.5 10.011.5 0.50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C95500 78.0 min . . . . . . . . . 3.05.0 3.05.5 10.011.5 3.5 . . . . . . .
48、. . . . . . . . . . . . . . . . . . . . . . . . . .C95600 88.0 min . . . . . . . . . . . . 0.25 6.08.0 . . . 1.83.2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C95800 79.0 min . . . 0.03 . . . 3.54.5C4.05.0C8.59.5 0.81.5 . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.10 . . .
49、C97300 53.058.0 1.53.0 8.011.0 17.025.0 1.5 11.014.0 . . . . . . . . . . . . . . . 0.35 . . . 0.08 0.05 0.005 0.50 0.15 . . .C97600 63.067.0 3.54.5 3.05.0 3.09.0 1.5 19.021.5 . . . . . . . . . . . . . . . 0.25 . . . 0.08 0.05 0.005 1.0 0.15 . . .C97800 64.067.0 4.05.5 1.02.5 1.04.0 1.5 24.027.0 . . . . . . . . . . . . . . . 0.20 . . . 0.08 0.05 0.005 1.0 0.15 . . .C99400 remainder . . . 0.09 0.55.0 1.03.0 1.0
