1、Designation: B455 10Standard Specification forCopper-Zinc-Lead Alloy (Leaded-Brass) Extruded Shapes1This standard is issued under the fixed designation B455; 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.1. Scope*1.1 This specification establishes the requirements for ex-truded leaded-brass angles, channels, and other architecturalshapes of soli
3、d cross section produced in Copper Alloy UNSNos. C38000 and C38500.1.1.1 Pipe, tube, or other hollow section products are notincluded in this specification.1.2 UnitsThe values stated in inch-pound units are to beregarded as standard. The values given in parentheses aremathematical conversions to SI
4、units that are provided forinformation only and are not considered standard.2. Referenced Documents2.1 ASTM Standards:2B249/B249M Specification for General Requirements forWrought Copper and Copper-Alloy Rod, Bar, Shapes andForgingsB601 Classification for Temper Designations for Copperand Copper All
5、oysWrought and CastB846 Terminology for Copper and Copper AlloysB950 Guide for Editorial Procedures and Form of ProductSpecifications for Copper and Copper AlloysE8 Test Methods for Tension Testing of Metallic MaterialsE54 Test Methods for ChemicalAnalysis of Special Brassesand Bronzes3E255 Practice
6、 for Sampling Copper and Copper Alloys forthe Determination of Chemical CompositionE478 Test Methods for ChemicalAnalysis of CopperAlloys3. General Requirements3.1 The following sections of Specification B249/B249Mconstitute a part of this specification:3.1.1 Terminology,3.1.2 Materials and Manufact
7、ure,3.1.3 Workmanship, Finish, and Appearance,3.1.4 Sampling,3.1.5 Number of Tests and Retests,3.1.6 Specimen Preparation,3.1.7 Test Methods,3.1.8 Significance of Numerical Limits,3.1.9 Inspection,3.1.10 Rejection and Rehearing,3.1.11 Certification,3.1.12 Mill Test Report, and3.1.13 Packaging and Pa
8、ckage Marking.3.2 In addition, when a section with a title identical to thatreferenced in 3.1 appears in this specification, it containsadditional information which supplements that appearing inSpecification B249/B249M. In case of conflict this specifica-tion shall prevail.4. Terminology4.1 For defi
9、nitions of terms related to copper and copperalloys, refer to Terminology B846.5. Ordering Information5.1 Include the following information when placing ordersfor product under this specification, as applicable:5.1.1 ASTM designation and year of issue (for example,B455 01),5.1.2 Copper Alloy UNS No.
10、 designation (for example,C38000),5.1.3 Temper (Section 7),5.1.4 Form, dimensions, and tolerances (Section 9), and5.1.5 Quantity; total weight or number of pieces for eachform, temper, size, and copper alloy.5.2 The following options are available and shall be speci-fied at the time of placing of th
11、e order when required:5.2.1 Intended end use or application,5.2.2 Heat identification or traceability details (Specifica-tion B249/B249M),5.2.3 Certification (Specification B249/B249M), and5.2.4 Mill test report (Specification B249/B249M).1This specification is under the jurisdiction ofASTM Committe
12、e B05 on Copperand Copper Alloys and is the direct responsibility of Subcommittee B05.02 on Rod,Bar, Wire, Shapes and Forgings.Current edition approved April 1, 2010. Published May 2010. Originallyapproved in 1967. Last previous edition approved in 2005 as B455 05. DOI:10.1520/B0455-10.2For referenc
13、ed 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.3Withdrawn. The last approved version of this historical standard is refer
14、encedon www.astm.org.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.6. Chemical Composition6.1 The material shall conform to the chemical composi-tional requirements
15、in Table 1 for the copper alloy UNS No.specified in the ordering information.6.1.1 These composition limits do not preclude the presenceof other elements. By agreement between the manufacturer andpurchaser, limits will be established and analysis required forunnamed elements.6.2 For alloys in which
16、zinc is specified as the remainder,either copper or zinc is permitted to be taken as the differencebetween the sum of results for all elements analyzed and100 %. When copper is so determined, that difference valueshall conform to the requirements given in Table 1.6.3 When all elements specified in T
17、able 1 are determinedfor the copper alloy UNS No. designated in the orderinginformation, the sum of the results shall be 99.5 % minimum.7. Temper7.1 The temper of the product furnished to this specifica-tion, as defined in Specification B249/B249M, shall be M30 (ashot extruded).8. Mechanical Propert
18、y Requirements8.1 Tensile Strength Requirements:8.1.1 The product furnished shall conform to the require-ments of Table 2 when tested in accordance with Test MethodsE8.8.1.2 The tension test results shall be the basis for purchaseracceptance or rejection based upon mechanical properties.8.1.2.1 When
19、 product is intended for strictly decorativepurposes and so stated in the purchase order or contract, it ispermitted under this specification for the mechanical propertyrequirements to be waived by the purchaser.8.2 Rockwell Hardness:8.2.1 A Rockwell hardness test offers a quick and conve-nient meth
20、od of checking general conformity to temper andtensile requirements.NOTE 1For assistance in testing, the minimum Rockwell B hardnessof M30 (as hot-extruded) temper shapes to this specification is approxi-mately 42.9. Dimensions, Mass, and Permissible Variations9.1 The dimensions, contours, and toler
21、ances shall be pro-vided by the purchaser, by means of a drawing or othermedium, and shall be a part of the contract or purchase order.9.2 Straightness tolerances shall be subject to agreementbetween the manufacturer and the purchaser and such agree-ment shall be part of the purchase order.10. Sampl
22、ing10.1 Lot size, portion size, and selection of sample piecesshall be as follows:10.1.1 Lot SizeAn inspection lot shall be 5000 lb (2275kg) or fraction thereof, of the same mill form, alloy, andnominal dimensions, subject to inspection at one time.10.1.2 Portion SizeThe portion shall be two individ
23、ualpieces of the lot selected as to be representative of the lot.10.2 Chemical Analysis:10.2.1 The sample for chemical analysis shall be taken inaccordance with Practice E255 for the product in its final formfrom the pieces selected in 10.1.2 and combined into onecomposite sample. The minimum weight
24、 of the compositesample shall be 150 g.10.2.2 Instead of sampling in accordance with PracticeE255, the manufacturer shall have the option of determiningconformance to chemical composition by analyzing samplestaken at the time the castings are poured.10.2.2.1 When samples are taken at the time of cas
25、ting, atleast one sample shall be taken from each group of castingspoured from the same source of molten metal.10.3 Samples for All Other TestsSamples taken for allother tests shall be taken from the sample portions selected in10.1.2 and be of a convenient size to accommodate the test andcomply with
26、 the requirements of the appropriate test method.11. Test Methods11.1 Product composition shall be determined, in case ofdispute, as follows:Element ASTM Test MethodAluminum E5480 (Reapproved1996)Copper E478Iron E478Lead E478 (AA)Tin E478 (photometric)Zinc E478 (titrimetric)11.1.1 Test method(s) to
27、be followed for the determinationof element(s) resulting from contractual or purchase orderagreement shall be as agreed upon between the supplier and thepurchaser.12. Keywords12.1 architectural extruded shapes; extruded shapes; leadedbrass extruded shapes; UNS No.C38000; UNS No. C38500TABLE 1 Chemic
28、al RequirementsElementComposition, %Copper AlloyUNS No.C38000Copper AlloyUNS No.C38500Copper 55.060.0 55.059.0Lead 1.52.5 2.53.5Zinc remainder remainderIron, max 0.35 0.35Tin, max 0.30 .Aluminum, max 0.50 .TABLE 2 Mechanical RequirementsCopper AlloyUNS Nos.C38000 andC38500Tensile strength, min, ksiA
29、(MPa)B48 (330)Yield strength at 0.5 % extension under load, min,ksi (MPa)B16 (110)ElongationBin 2 in. (50.8 mm), min, % 15Aksi = 1000 psi.BSee Appendix X1.B455 102APPENDIX(Nonmandatory Information)X1. METRIC EQUIVALENTSX1.1 The SI unit for strength properties now shown is inaccordance with the Inter
30、national 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 secondsquare (N = kgm/s2). The derived SI unit for pressure or stressis the newton per squa
31、re metre (N/m2), which has been namedthe pascal (Pa) by the General Conference on Weights andMeasures. Since 1 ksi = 6 894 757 Pa, the metric equivalentsare expressed as megapascal (MPa), which is the same asMN/m2and N/mm2.SUMMARY OF CHANGESCommittee B05 has identified the location of selected chang
32、es to this standard since the last issue, B455-05,that may impact the use of this standard. (Approved April 1, 2010.)(1) Minor Editing to conform to Standard Guide B950 forEditorial Procedures and Form of Product Specifications forCopper and Copper Alloys which should not impact the use.ASTM Interna
33、tional takes no position respecting the validity 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 th
34、eir own responsibility.This standard is subject 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
35、 be addressed to ASTM International Headquarters. 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 Standa
36、rds, at the address shown below.This standard is 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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).B455 103
