1、Designation: B763/B763M 14B763/B763M 15Standard Specification forCopper Alloy Sand Castings for Valve Applications1This standard is issued under the fixed designation B763/B763M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the
2、year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope*1.1 This specification esta
3、blishes requirements for copper alloy sand castings for valve applications. Nominal compositions ofthe alloys defined by this specification are shown in Table 1.2NOTE 1This specification does not cover Copper Alloy UNS Nos. C83600, C92200, C96200, and C96400. These alloys are also used in valveappli
4、cations. They are covered by the following specifications:C83600: B62C92200: B61C96200: B369C96400: B3691.2 The castings produced under this specification are used in products which may be manufactured in advance and suppliedfor sale from stock by the manufacturer.1.3 UnitsThe values stated in eithe
5、r SI units or inch-pound units are to be regarded separately as standard. The values statedin each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining valuesfrom the two systems may result in non-conformance with the standard.2. Referenced
6、Documents2.1 ASTM Standards:3B61 Specification for Steam or Valve Bronze CastingsB62 Specification for Composition Bronze or Ounce Metal CastingsB208 Practice for Preparing Tension Test Specimens for Copper Alloy Sand, Permanent Mold, Centrifugal, and ContinuousCastingsB369 Specification for Copper-
7、Nickel Alloy CastingsB824 Specification for General Requirements for Copper Alloy CastingsE10 Test Method for Brinell Hardness of Metallic MaterialsE527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)3. General Requirements3.1 The following sections of Specification B8
8、24 form a part of this specification.3.1.1 Terminology,3.1.2 Other Requirements,3.1.3 Dimensions, Mass, and Permissible Variations,3.1.4 Workmanship, Finish, and Appearance,1 This specification is under the jurisdiction of ASTM Committee B05 on Copper and Copper Alloys and is the direct responsibili
9、ty of Subcommittee B05.05 on Castingsand Ingots for Remelting.Current edition approved April 1, 2014May 1, 2015. Published May 2014May 2015. Originally approved in 1986. Last previous edition approved in 20132014 asB763/B763M 13B763/B763M 14.1. DOI: 10.1520/B0763_B0763M-14.10.1520/B0763_B0763M-15.2
10、The UNS system for copper and copper alloys (see Practice E527) is a simple expansion of the former standard designation system accomplished by the addition of aprefix “C” and a suffix “00”. The suffix can be used to accommodate composition variations of the base alloy.3 For referencedASTM standards
11、, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM s
12、tandard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by
13、ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.1.5 Sampling,3.1.6 Number of Tests and Retests,3.1.7 Specimen Preparatio
14、n,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 Packaging and Package Marking, and3.1.16 Supplementary Requirements.TABLE 1 Nominal CompositionsClassification Copper All
15、oyUNS No. Commercial Designation Copper Tin Lead Zinc Nickel Iron Alumi-num Man-ganese Sili-con Bismuth Sele-niumLeaded red brass C83450 88 212 2 612 1 . . . . . . . . . . . . . . . . . .C83800 83-4-6-7 or commercial red brass 83 4 6 7 . . . . . . . . . . . . . . . . . . . . .Leaded semi-red brass C
16、84400 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 brass C85200 high-copper yellow brass 72 1 3 24 . . . . . . . . . . . . . . . . . . . . .C85400 commercia
17、l No. 1 yellow brass 67 1 3 29 . . . . . . . . . . . . . . . . . . . . .Yellow brass C85470A yellow brass 62.5 2.5 . . . 34.5 . . . . . . 0.5 . . . . . . . . . . . .Leaded yellow brass C85700 leaded naval brass 61 1 1 37 . . . . . . . . . . . . . . . . . . . . .High-strength yellowbrassC86200 high-s
18、trength 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 . . . 1 12 12 . . . . . . . . .C86500 No. 1 manganese bronze 58 . . . . . . 39 . . . 1 1 1 . . . . . .
19、 . . .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 . . . . . . 14 .
20、 . . . . . . . . . . . 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.
21、0 .65 . . . . . . . . . . . . 1.4 . . .Bismuth brass C89537 bismuth brass 85 4.5 . . . 9 . . . . . . . . . . . . 0.9 1.7 . . .C89570B bismuth brass 60.5 0.8 . . . 36.5 0.32 . . . 0.5 . . . . . . 1.0 . . .C89720C bismuth brass 67.5 1 . . . 29.8 . . . . . . 0.5 . . . 0.5 0.7 . . .Bismuth semi-red bras
22、s C89844 bismuth brass 8412 4 . . . 8 . . . . . . . . . . . . . . . 3 . . .Tin 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-
23、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 . . . . . . . . . . . . . . . . . . . . .C93700 80-10-
24、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 . . . . . . . . . . . . . . .
25、 . . .leaded nickel-tinbronzeC94800 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 Gra
26、de B 89 . . . . . . . . . . . . 1 10 . . . . . . . . . . . .C95400 Grade C 85 . . . . . . . . . . . . 4 11 . . . . . . . . . . . .C95410 84 . . . . . . . . . 2 4 10 . . . . . . . . . . . .Silicon aluminum bronze C95600 Grade E 91 . . . . . . . . . . . . . . . 7 . . . 2 . . . . . .Nickel aluminum bro
27、nze C95500 Grade D 81 . . . . . . . . . 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 . . . . . . . . . . . .
28、. . . . . .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 . . . . . . 1.5 4.5 4.0 1.7 . . . 1.3 . . . . . .A Phosphorus 0.13B Phosphorus 0.1C Antimony 0.07, Boron 0.001.B763/B763M 152
29、4. Ordering Information4.1 Include the following information when placing orders for 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 UNS Number and temper (as-cast, heat-treated, etc.),4.1.4 Pattern
30、 or drawing number and condition (as-cast, machined, etc.),4.1.5 When castings are purchased for agencies of the U.S. Government, the Supplementary Requirements of SpecificationB824 may be specified.4.2 The following requirements are optional and should be specified in the purchase order when requir
31、ed.4.2.1 Chemical analysis of residual elements (6.3),4.2.1 Pressure test or soundness requirements (Specification B824),4.2.2 Approval of weld repair and records of repair (Section 10),4.2.3 Certification (Specification B824),4.2.4 Foundry test report (Specification B824),4.2.5 Witness inspection (
32、Specification B824),4.2.6 Product marking (Specification B824),4.2.7 Castings for seawater service (5.1).5. Materials and Manufacture5.1 For better corrosion resistance in sea water applications, castings in CopperAlloy UNS No. C95800 shall be given a temperanneal heat treatment at 1250 6 50F 675 6
33、10C for 6-h minimum. Cooling shall be by the fastest means possible that will notcause excessive distortion or cracking.5.2 Copper Alloy UNS Nos. C94700, C95300, C95400, C95410, and C95500 may be supplied in the heat-treated condition toobtain the higher mechanical properties shown in Table 4. Sugge
34、sted heat treatments for these alloys and copper alloy UNS No.C95520 are given in Table 5. Actual practice may vary by manufacturer.5.3 Separately cast test bar coupons representing castings made in CopperAlloy UNS Nos. C94700HT, C95300HT, C95400HT,C95410HT, and C95500HT shall be heat treated with t
35、he castings.6. Chemical Composition6.1 The castings shall conform to the requirements for major elements shown in Table 2.6.2 These specification limits do not preclude the presence of other elements. Limits may be established and analysis requiredfor unnamed elements agreed upon between the manufac
36、turer or supplier and the purchaser. Copper or zinc may be given asremainder and may be taken as the difference between the sum of all elements analyzed and 100 %. When all named elements inTable 2 are analyzed, their sum shall be as specified in Table 3.6.3 It is recognized that residual elements m
37、ay be present in cast copper alloys. Analysis shall be made for residual elementsonly when specified in the purchase order.7. Mechanical Properties7.1 Mechanical properties shall be determined from separately cast test bars, and shall conform with the requirements shownin Table 4.8. Sampling8.1 Copp
38、er Alloy UNS Nos. C86200, C86300, C86400, C86500, C86700, C95200, C95300, C95400, C95410, C95500,C95600, C95800, C99400, and C99500 test bar castings shall be cast to the form and dimensions shown in Figs. 1 or 2 of PracticeB208. For all other alloys listed in this specification test bars shall be c
39、ast to the form and dimensions shown in Figs. 2, 3 or 4of Practice B208.9. Test Methods9.1 Analytical chemical methods are given in Specification B824 (Test Methods section).9.2 Brinell hardness readings, if specified on the purchase order, shall be taken in the grip end of the tension test bar and
40、shallbe made in accordance with Test Method E10, except that 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 specificationare generally weldable. Weld repairs may be made at the manufacturers discre
41、tion provided each excavation does not exceed 20 %of the casting section or wall thickness or 4 % of the casting surface area.B763/B763M 153TABLE 2 Chemical RequirementsComposition, % max, except as indicatedCopperAlloy UNSNo.Major Elements Residual ElementsCopper Tin Lead Zinc IronNickelinclCobaltA
42、lu-minumManga-neseSili-conBis-muth Selenium IronAnti-monyNickelinclCobaltSulfur Phos-phorus Alu-minum Manga-nese Sili-con LeadC83450 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.
43、0A . . . . . . . . . . . . . . . 0.30 0.25 . . . 0.08 0.03 0.005 . . . 0.005 . . .C84400 78.082.0 2.33.5 6.08.0 7.010.0 . . . 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
44、. . . 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 0.05 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 . . .C85470
45、 60.065.0 1.04.0 0.09 Rem 0.20 . . . 0.101.0 . . . . . . . . . . . . . . . . . . . . . . . . 0.020.25 . . . . . . . . . . . .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 22.028.0 2.04.0 . . .
46、 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 . . . . . . .
47、. . . . . . . . 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 . . . . . . .
48、. . . . . . . . . . .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 . . .
49、0.09 12.016.0 . . . . . . . . . . . . 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 . . . . . . . . . . . . . . . . . . . . . . . . 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 . . .C895
