1、Designation: B 806 08aStandard Specification forCopper Alloy Permanent Mold Castings for GeneralApplications1This standard is issued under the fixed designation B 806; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of las
2、t revision. 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 requirem
3、ents for copperalloy2permanent mold castings for general applications.Nominal compositions of the alloys under this specification areshown in Table 1.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that
4、are provided for information onlyand are not considered standard.2. Referenced Documents2.1 The following documents of the issue in effect on dateof material purchase form part of this specification to the extentreferenced herein:2.2 ASTM Standards:3B 208 Practice for Preparing Tension Test Specimen
5、s forCopper Alloy Sand, Permanent Mold, Centrifugal, andContinuous CastingsB 824 Specification for General Requirements for CopperAlloy CastingsE 527 Practice for Numbering Metals and Alloys in theUnified Numbering System (UNS)3. Ordering Information3.1 Orders for casting under this specification sh
6、all includethe following information:3.1.1 Quantity of castings required,3.1.2 Copper Alloy UNS number (Table 2) and temper(as-cast, heat-treated, and so forth), (4.2),3.1.3 Specification number, title, and year of issue.3.1.4 Pattern or drawing number, and condition (cast, ma-chined, and so forth),
7、3.1.5 Pressure test requirements, if specified in the purchaseorder (Specification B 824),3.1.6 Soundness requirements, if specified in the purchaseorder (Specification B 824),3.1.7 Repair of castings (Section 7),3.1.8 Certification, if specified in the purchase order (Speci-fication B 824),3.1.9 Fo
8、undry 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 Product marking, if specified in the purchase order(Specification B 824), and3.1.12 Castings for Seawater Service (Section 4).3.2 When
9、material is purchased for agencies of the U.S.government, the Supplementary Requirements of SpecificationB 824 may be specified.4. Materials and Manufacture4.1 For better corrosion resistance in sea water applications,castings in Copper Alloy UNS No. C95800 shall be given atemper anneal heat treatme
10、nt at 1250 6 50F (675 6 10C) for6 h minimum. Cooling shall be the fastest means possible thatwill not cause excess distortion or cracking. Propeller castingsshall be exempt from this requirement.5. Chemical Composition5.1 The castings shall conform to the chemical requirementsspecified in Table 2.5.
11、2 These specification limits do not preclude the presenceof other elements. Limits may be established for unnamedelements by agreement between the manufacturer and thesupplier and the purchaser. Copper or zinc may be given as theremainder and may be taken as the difference between the sumof all the
12、elements analysed and 100 %.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. 1, 2008. Published November 2008. Originallyapproved in
13、1990. Last previous edition approved in 2008 as B 806 08.2The 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 suffix“ 00”. The suffix can be used to accommodatecomposition va
14、riations 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 to the standards Document Summary page onthe ASTM website.1*A Summary of Changes section app
15、ears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6. Mechanical Properties6.1 Mechanical properties shall be determined from sepa-rately cast test bar castings and shall meet the requirementsshown in Tab
16、le 3.7. Casting Repair7.1 Alloys included in this specification are generally weld-able. Weld repairs may be made at the manufacturers discre-tion.7.2 The castings shall not be impregnated without approvalof the purchaser (3.1.7).8. General Requirements8.1 Material furnished under this specification
17、 shall con-form to the applicable requirements of Specification B 824.9. Sampling9.1 A lot shall be as defined in Specification B 824 with theexception that a lot shall consist of not more than 1000 lbs (455kg) of castings (gates and risers removed).9.2 Test bar castings shall be cast to the form an
18、d dimen-sions shown in Figs. 8 or 10 using the dies shown in Figs. 7 or9 of Practice B 208.10. Keywords10.1 copper alloy castings; copper-base alloy castings; per-manent mold castingsTABLE 1 Nominal CompositionClassificationCopperAlloyUNS No.Nominal CompositionCopper Aluminum Iron ManganeseNickel (i
19、nclCobalt)Silicon Lead Zinc TinAluminum bronze C95300C95400C9541089.085.084.010.011.010.01.04.04.0.2.0.Nickel aluminum bronze C95500C9580081.081.311.09.04.04.0.1.24.04.5.Silicon brass C87500C8780082.082.0.4.04.0.14.014.0.C87850A76.0 . . . . 3.0 . 20.9 .Lead-free yellow brassBC89540 61.0 0.40 0.30 .
20、0.5 . . 36.0 0.8APhosphorus 0.12.BBismuth 0.9; selenium 0.03.TABLE 2 Chemical RequirementsClassificationCopperAlloyUNS No.Composition, % max except as indicatedCopper Aluminum Iron ManganeseNickel (inclCobalt)Silicon Lead Zinc TinCopper + Sumof namedelements,minAluminum bronze C95300 86.0 min 9.011.
21、0 0.751.5 . . . . . . 99.0C95400 83.0 min 10.011.5 3.05.0 0.25 1.5 . . . . 99.5C95410 83.0 min 10.011.5 3.05.0 0.25 1.52.5 . . . . 99.5Nickel aluminumbronzeC95500 78.0 min 10.011.5 3.05.0 1.0 3.05.5 . . . . 99.5C95800 79.0 min 8.59.5 3.54.5A0.81.5 4.05.0A0.10 0.03 . . 99.5Silicon brass C87500 79.0 m
22、in 0.5 . . . 3.05.0 0.09 12.016.0 . 99.5C87800 80.0 min 0.15 0.15 0.15 0.20 3.84.2 0.09 12.016.0 0.25 99.8BC87850C75.078.0 . . . 0.10 0.10 0.20 2.73.4 0.09 Remainder 0.30 99.5Lead-free yellowbrassDC89540 58.064.0 0.100.60 0.50 . 1.0 . 0.10 32.038.0 1.2 99.5AIron content shall not exceed the nickel c
23、ontent.BAntimony 0.05 %; arsenic 0.05 %; magnesium 0.01 %; phosphorus 0.01 %; and sulfur 0.05 % max.CAntimony 0.10 %; phosphorus is a major element at 0.050.20 %.DBismuth 0.61.2; selenium 0.10.TABLE 3 Mechanical RequirementsCopper Alloy UNSNo.Tensile Strength, minksiA(MPa)BYield Strength,minCksi (MP
24、a)Elongation in 2 in.(50.8 mm) min, %C95300 80 (550) 30 (205) 20C95400 100 (690) 40 (275) 10C95410 100 (690) 40 (275) 10C95500 110 (760) 60 (415) 5C95800D90 (620) 40 (275) 15C87500 80 (550) 30 (205) 15C87800 80 (550) 30 (205) 15C87850 64 (440) 32 (220) 16C89540 35 (240) 21 (140) 5Aksi = 1000 psi.BSe
25、e Appendix X1.CYield strength shall be determined as the stress producing an elongation underlead of 0.5 %, that is, 0.01 in. in a gage length of 2 in.DAs cast or temper annealed.B 806 08a2APPENDIX(Nonmandatory Information)X1. METRIC EQUIVALENTSX1.1 The SI unit for strength properties now shown is i
26、naccordance 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 secondsquared (N = kgm/s2). The derived SI unit for pressure orst
27、ress 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 asMN/m2 and N/mm2.SUMMARY OF CHANGESCommittee B05 has identified
28、the location of selected changes to this standard since the last issue (B 806 08)that may impact the use of this standard. (Approved Oct. 1, 2008.)(1) Changed lead level for Alloy C87500 from .50 to .09.(2) Changed lead level for Alloy C87850 from .10 to .09.(3) Changed copper level for Alloy C87850
29、 from 74 to 75.Committee B05 has identified the location of selected changes to this standard since the last issue (B 806 06)that may impact the use of this standard. (Approved April 1, 2008.)(1) Revised the lead entry for C87800 in Table 2.ASTM International takes no position respecting the validit
30、y of any patent rights asserted in connection with any item mentionedin this standard. 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
31、 to revision at any time by the responsible technical committee and must be reviewed every 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 Headquarter
32、s. Your comments will receive careful consideration at a meeting of theresponsible technical 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 i
33、s 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).B 806 08a3
