1、Designation: B271/B271M 111Standard Specification forCopper-Base Alloy Centrifugal Castings1This standard is issued under the fixed designation B271/B271M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revision.
2、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 Department of Defense.1NOTEDesignation was corrected editorially in October 2013.1. Sc
3、ope*1.1 This specification establishes requirements for centrifu-gal castings of copper-base alloys having the nominal compo-sitions shown in Table 1.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard. The values stated ineach system may not be exac
4、t equivalents; therefore, eachsystem shall be used independently of the other. Combiningvalues from the two systems may result in non-conformancewith the standard.2. Referenced Documents2.1 The following documents in the current issue of theBook of Standards form a part of this specification to the
5、extentreferenced herein:2.2 ASTM Standards:2B208 Practice for Preparing Tension Test Specimens forCopper Alloy Sand, Permanent Mold, Centrifugal, andContinuous CastingsB824 Specification for General Requirements for CopperAlloy CastingsB846 Terminology for Copper and Copper Alloys3. Terminology3.1 D
6、efinitions of terms relating to copper alloys can befound in Terminology B846.4. Ordering Information4.1 Orders for centrifugal castings under this specificationshould include the following information:4.1.1 Specification title, number, and year of issue,4.1.2 Quantity (length or number) of castings
7、,4.1.3 Copper Alloy UNS Number (Table 1) and temper(as-cast, heat-treated, and so forth),4.1.4 Dimensions or drawing number and condition (as-cast, machined, and so forth),4.1.5 ASME Boiler and Pressure Vessel Code requirements(Section 9),4.1.6 When castings are purchased for agencies of the U.S.Gov
8、ernment, the Supplementary Requirements in SpecificationB824 may be specified.4.2 The following are optional and should be specified inthe purchase order when required:4.2.1 Chemical analysis of residual elements (Section 6.3),4.2.2 Pressure test or soundness requirements (SpecificationB824),4.2.3 A
9、pproval of weld repair (Section 8),4.2.4 Certification (Specification B824),4.2.5 Foundry test report (Specification B824),4.2.6 Witness inspection (Specification B824),4.2.7 Product marking (Specification B824), and4.2.8 Castings for seawater service (Section X1.2).5. Materials and Manufacture5.1 C
10、astings in Copper Alloy UNS No. C95520 are used inthe heat treated condition only.6. Chemical Composition6.1 The centrifugal castings shall conform to the chemicalrequirement shown in Table 2 for the Copper Alloy UNSNumbers specified in the purchase order.6.2 These specification limits do not preclu
11、de 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 sum of all elements analyzed and 100 %. When
12、allnamed elements in Table 2 are analyzed, their sum shall be asspecified in Table 3.1This 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 Remelting.Current edition approved Oct.
13、 1, 2011. Published November 2011. Originallyapproved in 1954. Last previous edition approved in 2008 as B271 08. DOI:10.1520/B0271_B0271M-11E01.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards
14、volume information, refer to the standards Document Summary page onthe ASTM website.*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 States16.3 It is recognized that residual el
15、ements may be present incast copper-base alloys. Analysis shall be made for residualelements only when specified in the purchase order.7. Mechanical Properties7.1 Mechanical properties shall be determined from test barcastings cast in accordance with Practice B208 and shall meetthe requirements show
16、n in Table 4.8. Weld Repair8.1 The castings shall not be weld repaired without cus-tomer approval.9. ASME Requirements9.1 When specified in the purchase order to meet ASMEBoiler and Pressure Vessel Code requirements castings inCopper Alloy UNS Nos. C95200 and C95400 shall complywith the following:9.
17、1.1 Certification requirements of Specification B824.9.1.2 Foundry test report requirements of SpecificationB824.9.1.3 Castings shall be marked with the manufacturersname, the Copper Alloy UNS No., and the casting qualityfactor. In addition, heat numbers or serial numbers that aretraceable to heat n
18、umbers shall be marked on all pressure-containing castings individually weighing 50 lb 22.7 kg ormore. Pressure-containing castings weighing less than 50 lb22.7 kg shall be marked with either the heat number or aserial number that will identify the casting as to the month inwhich it was poured. Mark
19、ing shall be in such a position as tonot injure the usefulness of the casting.10. General Requirements10.1 The following sections of Specification B824 form apart of this specification. In the event of a conflict between thisspecification and Specification B824, the requirements of thisspecification
20、 shall take precedence.10.1.1 Terminology,10.1.2 Other Requirements,10.1.3 Dimensions, Mass, and Permissible Variations,10.1.4 Workmanship, Finish, and Appearance,10.1.5 Sampling,10.1.6 Number of Tests and Retests,10.1.7 Specimen Preparation,10.1.8 Test Methods,10.1.9 Significance of Numerical Limit
21、s,10.1.10 Inspection,10.1.11 Rejection and Rehearing,10.1.12 Certification,10.1.13 Test Report,10.1.14 Packaging and Package Marking, and10.1.15 Supplementary Requirements.TABLE 1 Nominal CompositionsClassificationCopper AlloyUNS No.CommercialDesignationCopper Tin Lead Zinc Nickel IronAlum-inumMang-
22、aneseSiliconLeaded red brass C83600 85-5-5-5 85 5 5 5 . . . . .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 brass C85200 high copper y
23、ellow 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 . . 27 . 3 4 3 .C86300 high-strength manganese bronze 61 . . 27 . 3 6 3 .C86400 leaded manganese bro
24、nze 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 .Silicon bronze and silicon C87300 silicon bronze 95 . . . . . . 1 4brass C87400 silicon brass 82 .12 14 . . . . 312C87500 silicon brass 82 . . 14 . . . . 4C87600 silicon bronze 8
25、9 . . 6 . . . . 5Tin bronze and leaded C90300 88-8-0-4, or modified “G” bronze 88 8 . 4 . . . . .tin bronze C90500 88-10-0-2, or “G” bronze 88 10 . 2 . . . . .C92200 88-6-2-4 or “M” bronze 88 6 2 4 . . . . .C92300 87-8-1-4, or Navy PC 87 8 1 4 . . . . .High-lead tin bronze C93200 83-7-7-3 83 7 7 3 .
26、 . . . .C93500 85-5-9-1 85 5 9 1 . . . . .C93600 81-7-12 81 7 12 . . . . . .C93700 80-10-10 80 10 10 . . . . . .C93800 78-7-15 78 7 15 . . . . . .C94300 71-5-24 71 5 24 . . . . . .Aluminum bronze C95200 Grade A 88 . . . . 3 9 . .C95300 Grade B 89 . . . . 1 10 . .C95400 Grade C 85 . . . . 4 11 . .C95
27、410 84 . . . 2 4 10 . .C95900 82.5 . . . . 4.5 13 . .Nickel aluminum bronze C95500 Grade D 81 . . . 4 4 11 . .C95520 78.5 . . . 5.5 5.0 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 . . . .C
28、97800 25 % leaded nickel silver 66 5 2 2 25 . . . .B271/B271M 1112TABLE2ChemicalRequirementsComposition,%maxExceptasIndicatedCopperAlloyUNSNo.MajorElementsResidualElementsCopperTinLeadZincIronNickelinclCobaltAluminumManganeseSiliconIronAntimonyNickelinclCobaltSulfurPhosphorusAluminumOtherSiliconC836
29、0084.086.04.06.04.06.04.06.0.1.0A.0.300.25.0.080.050.005.0.005C8380082.083.83.34.25.07.05.08.0.1.0A.0.300.25.0.080.030.005.0.005C8440078.082.02.33.56.08.07.010.0.1.0A.0.400.25.0.080.020.005.0.005C8480075.077.02.03.05.57.013.017.0.1.0A.0.400.25.0.080.020.005.0.005C8520070.074.00.72.01.53.820.027.0.0.
30、60.201.00.050.020.005.0.05C8540065.070.00.501.51.53.824.032.0.0.7.1.0.0.35.0.05C8570058.064.00.501.50.81.532.040.0.0.8.0.7.1.0.0.05C8620060.066.00.200.2022.028.02.04.0.3.04.92.55.0.1.0.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.
31、0.C8650055.060.01.00.4036.042.00.402.0.0.501.50.101.5.1.0.C8670055.060.01.50.501.530.038.01.03.0.1.03.00.103.5.1.0.C8730094.0min.0.090.25.0.81.53.55.00.20.C8740079.0min.1.012.016.0.2.54.0.0.8.C8750079.0min.0.0912.016.0.3.05.0.0.50.C8760088.0min.0.094.07.00.20.0.253.55.5.C9030086.089.07.59.00.303.05.
32、0.1.0A.0.200.20.0.050.050.005.0.005C9050086.089.09.011.00.301.03.0.1.0A.0.200.20.0.050.050.005.0.005C9220086.090.05.56.51.02.03.05.0.1.0A.0.250.25.0.050.050.005.0.005C9230085.089.07.59.00.301.02.55.0.1.0A.0.250.25.0.050.050.005.0.005C9320081.085.06.37.56.08.01.04.0.1.0A.0.200.35.0.080.150.005.0.005C
33、9350083.086.04.36.08.010.02.0.1.0A.0.200.30.0.080.050.005.0.005C9360079.083.06.08.011.013.01.0.1.0A.0.200.55.0.080.150.005.0.005C9370078.082.09.011.08.011.00.8.0.50A.0.70.50.0.080.100.005.0.005C9380075.079.06.37.513.016.00.8.1.0A.0.150.8.0.080.050.005.0.005C9430067.072.04.56.023.027.00.8.1.0A.0.150.
34、8.0.080.050.005.0.005C9520086.0min.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.C9552074.5min.4.05.54.26.010.511.51.5.CR0.05CO0.20SN0.25Pb0.03Zn0.300.15C9580079.0min.3.54.5B4.05.0B8.59.50.8
35、1.5.Pb0.030.10C95900rem.3.05.00.512.013.51.5.C9730053.058.01.53.08.011.017.025.01.511.014.0.0.50.0.35.0.080.050.005.0.15C9760063.067.03.54.53.05.03.09.01.519.021.5.1.0.0.25.0.080.050.005.0.15C9780064.067.04.05.51.02.51.04.01.524.027.0.1.0.0.20.0.080.050.005.0.15AIndeterminingcopperminimumcoppermaybe
36、calculatedascopperplusnickel.BIroncontentshallnotexceednickelcontent.B271/B271M 111311. Sampling11.1 Test bars shall be made in accordance with PracticeB208.11.2 At the manufacturers option test bars may be removedfrom the casting instead of from a separately cast coupon.11.3 Separately cast test ba
37、rs representing castings in Cop-per Alloy UNS Nos. C95300HT, C95400HT, C95410HT,C95500HT, C95520HT, C95800 temper annealed, and C95900annealed shall be heat treated with the castings.12. Test Methods12.1 Analytical chemical methods are given in SpecificationB824.12.1.1 Test methods to be followed fo
38、r the determination ofelements resulting from contractual or purchase order agree-ment shall be as agreed upon between the manufacturer orsupplier and the purchaser.12.2 Brinell hardness readings shall be taken on the grip endof the tension test bar and shall be made in accordance withTest Method E1
39、0, with the exception that a 3000 kg load shallbe used.13. Product Marking13.1 When specified in the purchase order the castings shallbe marked with the alloy number.14. Keywords14.1 centrifugal castings; copper alloy castings; copper-basealloy castingsTABLE 3 Sum of All Named Elements AnalyzedCoppe
40、r AlloyUNS No.Copper PlusNamed Elements%minCopper AlloyUNS No.Copper PlusNamed Elements%minC83600 99.3 C92200 99.3C83800 99.3 C92300 99.3C84400 99.3 C93200 99.2C84800 99.3 C93500 99.4C85200 99.1 C93600 99.3C85400 98.9 C93700 99.0C85700 98.7 C93800 98.9C86200 99.0 C94300 99.0C86300 99.0 C95200 99.0C8
41、6400 99.0 C95300 99.0C86500 99.0 C95400 99.5C86700 99.0 C95410 99.5C87300 99.5 C95500 99.5C87400 99.2 C95520 99.5C87500 99.5 C95800 99.5C87600 99.5 C95900 99.5C90300 99.4 C97300 99.0C90500 99.7 C97600 99.7C97800 99.6B271/B271M 1114APPENDIX(Nonmandatory Information)X1. HEAT TREATMENTX1.1 Castings in
42、Copper Alloys UNS Nos. C95300,C95400, C95410, and C95500 may be supplied in the heattreated condition to obtain the higher mechanical propertiesshown in Table 4. Suggested heat treatments for these alloysand Copper Alloys UNS No. C95520 are given in Table X1.1.Actual practice may vary by manufacture
43、r.X1.2 For better corrosion resistance in seawaterapplications, castings in Copper Alloys UNS No. C95800 shallbe given a temper anneal heat treatment at 1250 6 50F 6756 10C for 6 h minimum. Cooling shall be by the fastestmeans possible that will not cause distortion or cracking whichrenders the cast
44、ings unusable for the intended application.X1.3 Castings in Copper Alloys UNS No. C95900 arenormally supplied annealed between 1100F 595C and1300F 705C for 4 h followed by air cooling.TABLE 4 Mechanical RequirementsCopper AlloyUNS No.Tensile Strength, min Yield Strength,AminElongation in 2 in.or 50
45、mm, min, %Brinell Hardness No.B3000-kG Load, minksiCMPaDksiCMPaDC83600 30 207 14 97 20 .C83800 30 207 13 90 20 .C84400 29 200 13 90 18 .C84800 28 193 12 83 16 .C85200 35 241 12 83 25 .C85400 30 207 11 76 20 .C85700 40 276 14 97 15 .C86200 90 621 45 310 18 .C86300 110 758 60 414 12 .C86400 60 414 20
46、138 15 .C86500 65 448 25 172 20 .C86700 80 552 32 221 15 .C87300 45 310 18 124 20 .C87400 50 345 21 145 18 .C87500 60 414 24 165 16 .C87600 60 414 30 207 16 .C87610 45 310 18 124 20 .C90300 40 276 18 124 20 .C90500 40 276 18 124 20 .C92200 34 234 16 110 22 .C92300 36 248 16 110 18 .C93200 30 207 14
47、97 15 .C93500 28 193 12 83 15 .C93600 32 221 16 110 15 .C93700 30 207 12 83 15 .C93800 26 179 14 97 12 .C94300 24 165 . . 10 .C95200 65 450 25 170 20 110C95300 65 450 25 170 20 110C95300(HT) 80 550 40 275 12 160C95400 75 515 30 205 12 150C95400(HT) 90 620 45 310 6 190C95410 75 515 30 205 12 150C9541
48、0(HT) 90 620 45 310 6 190C95500 90 620 40 275 6 190C95500(HT) 110 760 60 415 5 200C95520(HT) 125 862 95E655E3 262C95800F85 585 35 240 15 .C95900 . . . . . 241 minC97300 30 207 15 97 8 .C97600 40 276 17 117 10 .C97800 50 345 22 152 10 .AYield strength shall be determined as the stress producing an elongation under load of 0.5 %, that is 0.01 in. 0.254 mm in a gage length of 2 in. 50.8 mm.BFor information only.Cksi 1000 psi.DSee Appendix.EYield strength at 0.2 % offset.FAs cast or temper annealed.B271/B271M 1115SUMMARY
