ASTM B740-2009 Standard Specification for Copper-Nickel-Tin Spinodal Alloy Strip《铜镍锡旋节合金带材的标准规范》.pdf
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1、Designation: B 740 09Standard Specification forCopper-Nickel-Tin Spinodal Alloy Strip1This standard is issued under the fixed designation B 740; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in
2、 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 copper-nickel-
3、tin alloy strip in the following alloys:Copper Alloy UNS No.Nominal Composition Weight %Copper Nickel TinC72700 85 9 6C72900 77 15 8C72650 87.5 7.5 51.2 UnitsThe values stated in inch-pound units and thevalues stated in SI units in Table 5 are to be regarded asstandard, except for grain size which i
4、s stated in metric unitsonly. The values given in parentheses are mathematical con-versions to SI units and are provided for information only andare not considered standard.1.3 The following safety hazard caveat pertains only to thetest method(s) described in this specification.1.3.1 This standard d
5、oes not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 The fol
6、lowing documents of the issue in effect on dateof material purchase form a part of this specification to theextent referenced herein:2.2 ASTM Standards:2B 248 Specification for General Requirements for WroughtCopper and Copper-Alloy Plate, Sheet, Strip, and RolledBarB 598 Practice for Determining Of
7、fset Yield Strength inTension for Copper AlloysB 601 Classification for Temper Designations for Copperand Copper AlloysWrought and CastB 820 Test Method for Bend Test for Determining theFormability of Copper and Copper Alloy StripB 846 Terminology for Copper and Copper AlloysE3 Guide for Preparation
8、 of Metallographic SpecimensE8 Test Methods for Tension Testing of Metallic MaterialsE75 Test Methods for ChemicalAnalysis of Copper-Nickeland Copper-Nickel-Zinc AlloysE 290 Test Methods for Bend Testing of Material forDuctilityE 478 Test Methods for Chemical Analysis of CopperAlloys3. General Requi
9、rements3.1 The following sections of Specification B 248 constitutea part of this specification:3.1.1 Terminology,3.1.2 Materials and Manufacture,3.1.3 Dimensions and Permissible Variations,3.1.4 Workmanship, Finish, and Appearance,3.1.5 Sampling,3.1.6 Significance of Numerical Limits,3.1.7 Inspecti
10、on,3.1.8 Rejection and Rehearing,3.1.9 Certification,3.1.10 Test Reports, and3.1.11 Packaging and Package Marking.3.2 In addition, when a section with a title identical to thatreferenced in 3.1 above appears in this specification, it containsadditional requirements that supplement those appearing in
11、Specification B 248.4. Terminology4.1 For definitions of terms related to copper and copperalloys, refer to Terminology B 846.5. 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,1
12、This specification is under the ASTM Committee B05on Copper and CopperAlloys and is the direct responsibility of Subcommittee B05.01 on Plate, Sheet, andStrip.Current edition approved Aug. 15, 2009. Published September 2009. Originallyapproved in 1984. Last previous edition approved in 2002 as B 740
13、 02.2For 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 appears at the end of this
14、 standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5.1.2 Quantity,5.1.3 Copper Alloy UNS No. (see 1.1),5.1.4 Form of material: strip,5.1.5 Temper (see 8.1),5.1.6 Dimensions: thickness and width, and length if appli-cable,5.1.7
15、How furnished: rolls or coils, stock lengths with orwithout ends, specific lengths with or without ends,5.1.8 Type of edge other than slit, for example, roundedcorners, rounded edges, or full-rounded edges.5.1.9 When material is purchased for agencies of the U.S.Government, this shall be specified i
16、n the contract or purchaseorder, and the material shall conform to the SupplementaryRequirements Section as defined in the current edition ofSpecification B 248.5.2 The following options are available and should bespecified at the time of placing of the order when required:5.2.1 Certification if req
17、uired,5.2.2 Mill test report if required,6. Chemical Composition6.1 The material shall conform to the chemical compositionrequirements specified in Table 1 for the copper alloy UNS No.designation specified in the ordering information.6.2 These composition limits do not preclude the presenceof other
18、elements. By agreement between manufacturer orsupplier and purchaser, limits may be established and analysisrequired for unnamed elements.6.3 Copper may be given as remainder and taken as thedifference between the sum of all the elements analyzed and100%. When all the elements in the table including
19、 copper areanalyzed, their sum shall be 99.7% min.7. Materials and Manufacture7.1 ManufactureSpinodal Heat Treatment.7.1.1 Solution-heat-treatment or solution-heat-treated andcold-worked material is normally spinodal hardened by thepurchaser after forming or machining.7.1.2 Mill-hardened products ha
20、ve been spinodal heattreated by the manufacturer. Further thermal treatment is notnormally required.8. Temper8.1 The standard tempers for products described in thisspecification are given in Tables 2-48.1.1 TB00 (Solution Heat Treated)8.1.2 TD01 to TD 12 (Solution Heat Treated with varyingdegrees of
21、 cold working)8.1.3 TX00 ( Spinodal Hardened)8.1.4 TS01 to TS12 (Hard and Spinodal Hardened)8.1.5 TM00 to TS08 (mill hardened)8.2 Other tempers are available and shall be subject toagreement between supplier or manufacturer and purchaser.9. Grain Size for Annealed Tempers9.1 Product over 0.010 in. (
22、0.25 mm) in thickness shall havean average grain-size not exceeding the limits prescribed inTable 5. The determinations are made on the separate samplesand in a plane perpendicular to the surface.10. Mechanical Property Requirements10.1 Tensile Strength Requirements:10.1.1 The solution heat-treated
23、or solution heat-treated andcold-worked material shall conform to the tensile propertyrequirements specified in Table 2, when tested in accordancewith Test Methods E8.10.1.2 The spinodal heat-treated material shall conform tothe tensile property requirements specified in Table 3.10.1.2.1 Special com
24、binations of properties such as in-creased ductility, electrical conductivity, dimensional accuracy,endurance life, improved stress relaxation resistance, resistanceto elastic drift, and hysteresis in springs may be obtained byspecial spinodal-hardening treatments. The mechanical re-quirements of Ta
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