1、Designation: B740 09 (Reapproved 2015)Standard Specification forCopper-Nickel-Tin Spinodal Alloy Strip1This standard is issued under the fixed designation B740; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revis
2、ion. 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 U.S. Department of Defense.1. Scope*1.1 This specification establishes requiremen
3、ts for copper-nickel-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 f
4、or grain size which is 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.
5、1.3.1 This standard does 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
6、 Documents2.1 The following documents of the issue in effect on dateof material purchase form a part of this specification to theextent referenced herein:2.2 ASTM Standards:2B248 Specification for General Requirements for WroughtCopper and Copper-Alloy Plate, Sheet, Strip, and RolledBarB598 Practice
7、 for Determining Offset Yield Strength inTension for Copper AlloysB601 Classification for Temper Designations for Copper andCopper AlloysWrought and CastB820 Test Method for Bend Test for Determining the Form-ability of Copper and Copper Alloy StripB846 Terminology for Copper and Copper AlloysE3 Gui
8、de for Preparation of Metallographic SpecimensE8/E8M Test Methods for Tension Testing of Metallic Ma-terialsE75 Test Methods for Chemical Analysis of Copper-Nickeland Copper-Nickel-Zinc Alloys (Withdrawn 2010)3E290 Test Methods for Bend Testing of Material for Ductil-ityE478 Test Methods for Chemica
9、l Analysis of Copper Alloys3. General Requirements3.1 The following sections of Specification B248 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 Signi
10、ficance of Numerical Limits,3.1.7 Inspection,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 requi
11、rements that supplement those appearing inSpecification B248.4. Terminology4.1 For definitions 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:1T
12、his specification is under the ASTM Committee B05 on Copper and CopperAlloys and is the direct responsibility of Subcommittee B05.01 on Plate, Sheet, andStrip.Current edition approved May 1, 2015. Published June 2015. Originallyapproved in 1984. Last previous edition approved in 2009 as B740 09. DOI
13、:10.1520/B0740-09R15.2For 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.3The last approved version of this histo
14、rical standard is referenced onwww.astm.org.*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 States15.1.1 ASTM designation and year of issue,5.1.2 Quantity,5.1.3 Copper Alloy UN
15、S 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 ifapplicable,5.1.7 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, roundedco
16、rners, rounded edges, or full-rounded edges.5.1.9 When material is purchased for agencies of the U.S.Government, this shall be specified in the contract or purchaseorder, and the material shall conform to the SupplementaryRequirements Section as defined in the current edition ofSpecification B248.5.
17、2 The following options are available and should bespecified at the time of placing of the order when required:5.2.1 Certification, if required.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 t
18、he copper alloy UNS No.designation specified in the ordering information.6.2 These composition limits do not preclude the presenceof other elements. By agreement between manufacturer orsupplier and purchaser, limits may be established and analysisrequired for unnamed elements.6.3 Copper may be given
19、 as remainder and taken as thedifference between the sum of all the elements analyzed and100%. When all the elements in the table including 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-h
20、eat-treated andcold-worked material is normally spinodal hardened by thepurchaser after forming or machining.7.1.2 Mill-hardened products have been spinodal heattreated by the manufacturer. Further thermal treatment is notnormally required.8. Temper8.1 The standard tempers for products described in
21、thisspecification are given in Tables 2-4.8.1.1 TB00 (Solution Heat Treated).8.1.2 TD01 to TD 12 (Solution Heat Treated with varyingdegrees of 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 availab
22、le and shall be subject toagreement between supplier or manufacturer and purchaser.9. Grain Size for Annealed Tempers9.1 Product over 0.010 in. (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
23、 in a plane perpendicular to the surface.10. Mechanical Property Requirements10.1 Tensile Strength Requirements:10.1.1 The solution heat-treated or solution heat-treated andcold-worked material shall conform to the tensile propertyrequirements specified in Table 2, when tested in accordancewith Test
24、 Methods E8/E8M.10.1.2 The spinodal heat-treated material shall conform tothe tensile property requirements specified in Table 3.10.1.2.1 Special combinations of properties such as in-creased ductility, electrical conductivity, dimensional accuracy,endurance life, improved stress relaxation resistan
25、ce, resistanceto elastic drift, and hysteresis in springs may be obtained byspecial spinodal-hardening treatments. The mechanical re-quirements of Table 3 do not apply to such special heattreatments.10.1.3 The mill-hardened material shall conform to thetensile property requirements specified in Tabl
26、e 4.11. Performance Requirements11.1 Bend TestingThe bend test is a method for evaluatingthe ductility of mill-hardened copper-nickel-tin spinodal alloystrip in thicknesses of 0.004 to 0.020 in. (0.102 to 0.508 mm),inclusive.11.1.1 Material in tempers TM00, TM02, TM04, and TM06shall conform to the b
27、end test requirements specified in Table4 when tested in accordance with 15.2.1.11.1.2 To pass the test, all three specimens tested from a lotmust withstand the 90 bend without visible cracks of fracturewhen observed of the convex surface of the bend at amagnification of 10.TABLE 1 Chemical Requirem
28、entsComposition, %Copper AlloyUNS No.PreviousDesignationCopper,incl.SilverLead,AmaxIron,AmaxZinc,AmaxNickel,incl.CobaltTinManganese,AmaxNiobium,AmaxMagnesium,AmaxC72650 Cu-7.5Ni-5Sn remainder 0.01 0.10 0.10 7.08.0 4.55.5 0.10 . .C72700 Cu-9Ni-6Sn remainder 0.02B0.50 0.50 8.59.5 5.56.5 0.05-0.30 0.10
29、 0.15C72900 Cu-15Ni-8Sn remainder 0.02B0.50 0.50 14.515.5 7.58.5 0.30 0.10 0.15AThe total of the elements Pb, Fe, Zn, Mn, Nb, and Mg not to exceed 0.7 %.B0.005 % Pb, max for hot rolling.B740 09 (2015)212. Dimensions and Permissible Variations12.1 The dimensions and tolerances for product describedby
30、 this specification shall be as specified in Specification B248with particular reference to the following tables and relatedparagraphs:12.1.1 ThicknessTable 212.1.1.1 Special ThicknessTable 312.1.2 Width12.1.3 Length12.1.4 Straightness12.1.4.1 Slit Metal or Slit Metal Either Straightened or EdgeRoll
31、ed13. Retests13.1 If any lot of material fails to conform to the require-ments of this specification due to inadequate heat treatment,new samples of material may be resubmitted for test after heattreatment. Only two such reheat treatments shall be permitted.13.2 If any lot of material fails to confo
32、rm to the bend testrequirements of this specification, one retest is permitted ifonly one of the three specimens fails the test. No retest ispermitted if two or more specimens fail the test.14. Specimen Preparation14.1 For the purpose of determining conformance to themechanical properties of Table 3
33、, a sample of the non-spinodally hardened strip of alloys C72700 and C72900material shall be heat treated at 662 6 9F (350 6 5C) for1h6 5 min and a sample of the as-supplied strip of alloyC72650 shall be heat treated at 725 6 9 (385 6 5C) for 2 h6 5 min. Other heat-treating temperatures and times ma
34、y bepreferred for end products of this material.14.2 Specimens for the determination of grain size shall beprepared in accordance with Guide E3.14.3 For bend testing, three specimens,12 6116 in. (12.706 1.59 mm) in width of any convenient length, with the rollingTABLE 2 Tensile Property Requirements
35、Tempers: Solution Heat-TreatedSolution Heat-Treated and Cold WorkedCopper AlloyUNS No.Temper DesignationsTensileStrength,ksiA(MPa)BminmaxCYieldDStrength(0.05 % Offset),ksiA(MPa)BminmaxCElongationin2in.,%Code NameC72650 TB00 Solution HT 5570 2132 32(380480) (145220)C72650 TD01 Solution HT and Cold Wo
36、rked14 Hard 6075 4560 18(415515) (310415)C72650 TD02 Solution HT and Cold Worked12 Hard 7585 5575 5(515585) (380515)C72650 TD03 Solution HT and Cold Worked34 Hard 8090 6882 4(550620) (470565)C72650 TD04 Solution HT and Cold Worked Hard 8595 7790 2(585655) (530620)C72700 TB00 Solution HT 6080 2333 30
37、(410550) (160230)C72700 TD01 Solution HT and Cold Worked14 Hard 7295 4864 12(500660) (330440)C72700 TD02 Solution HT and Cold Worked12 Hard 82108 5780 6(570740) (390550)C72700 TD04 Solution HT and Cold Worked Hard 97125 77100 3(670860) (530690)C72700 TD08 Solution HT and Cold Worked Spring 110140 95
38、115 2(760970) (660790)C72700 TD12 Solution HT and Cold Worked Special Spring 115150 105125 .(7901030) (720860)C72900 TB00 Solution HT 6485 2440 32(440585) (165275)C72900 TD01 Solution HT and Cold Worked14 Hard 75100 5066 18(515690) (345455)C72900 TD02 Solution HT and Cold Worked12 Hard 85110 6584 8(
39、585760) (450580)C72900 TD03 Solution HT and Cold Worked34 Hard 95-120 80-100 3(655-825) (550-690)C72900 TD04 Solution HT and Cold Worked Hard 100130 85108 .(690895) (585745)C72900 TD08 Solution HT and Cold Worked Spring 122145 100125 .(8401000) (690860)C72900 TD12 Solution HT and Cold Worked Special
40、 Spring 135155 110130 .(9301070) (760895)A1 ksi = 1000 psi.BSee Appendix X1.CMax for reference.DAs per Practice B598.B740 09 (2015)3direction perpendicular to the12 in. dimension, shall beprepared and tested in accordance with Test Method B820.15. Test Methods15.1 Chemical Analysis:15.1.1 Compositio
41、n shall be determined, in case ofdisagreement, as follows:Element Test MethodsCopper E75Nickel E478Tin E75Lead E75Iron E75Zinc E75Manganese E7515.1.2 Test methods to be followed for the determination ofelements not listed above or elements resulting from contrac-tual or purchase order agreement, sha
42、ll be as agreed uponbetween the manufacturer or supplier and purchaser.15.2 Other Tests:15.2.1 Bend TestThe axis of the bend shall be at an angleof 90 to the direction of rolling, unless otherwise specified.The test specimens shall be bent 90 6 5 around the test radius.15.2.2 The test radius shall b
43、e within 66 % of the nominalradius up to 0.010 in. (0.254 mm), and within 64 % for radii0.010 in. (0.254 mm) and over.15.2.3 The determinations are made on the separate samplesand in a plane perpendicular to the surface.16. Keywords16.1 age hardening; copper-nickel-tin; spinodal; strip; UNSC72650; U
44、NS C72700; UNS C72900TABLE 3 Tensile Property RequirementsTempers: Solution Heat Treated and Spinodally Hardened;ASolution Heat Treated, Cold Worked and Spinodally HardenedACopper AlloyUNS No.Temper DesignationsTensileStrength,ksiB(MPa)CminmaxDYieldEStrength(0.05 % Offset),ksiB(MPa)CminmaxDElongatio
45、nin2in.,%Code NameC72650 TX00 Spinodal HT 120140 6095 6(825965) (415655)C72650 TS0114 Hard and Spinodal HT 130140 90115 8(900965) (620790)C72650 TS0212 Hard and Spinodal HT 135145 100125 6(9301000) (690860)C72650 TS0334 Hard and Spinodal HT 140150 105130 6(9651035) (725895)C72650 TS04 Hard and Spino
46、dal HT 140155 110135 4(9651070) (760930)C72700 TX00 Spinodal HT 100130 5599 15(690900) (380680)C72700 TS0114 Hard + Spinodal HT 115140 85112 10(790970) (590770)C72700 TS0212 Hard + Spinodal HT 125150 100123 6(8601030) (690850)C72700 TS04 Hard + Spinodal HT 135160 115135 4(9301100) (790930)C72700 TS0
47、8 Spring + Spinodal HT 145179 125150 3(10001230) (8601030)C72700 TS12 Special Spring + Spinodal HT 150180 130160 2(10301240) (9001100)C72900 TX00 Spinodal HT 120150 95120 6(8251035) (655825)C72900 TS0114 Hard + Spinodal HT 130160 105130 4(8951105) (725895)C72900 TS0212 Hard + Spinodal HT 145175 1251
48、50 3(10001205) (8601035)C72900 TS0334 Hard + Spinodal HT 155185 135160 2(10701275) (9301105)C72900 TS04 Hard + Spinodal HT 165195 145170 2(11401345) (10051170)C72900 TS08 Spring + Spinodal HT 175205 155185 .(12051415) (10701275)C72900 TS12 Special Spring + Spinodal HT 180225 160200 .(12401550) (1105
49、1380)A662 9F (350 5C) for 112 h5min(C72700, C72900); 725 9F (385 5C) for 2h5min(C72650).B1 ksi = 1000 psi.CSee Appendix X1.DMax for reference.EAs per Practice B598.B740 09 (2015)4APPENDIX(Nonmandatory Information)X1. METRIC EQUIVALENTSX1.1 The SI unit for strength properties now shown is inaccordance with the International System of Units (SI). Thederived SI unit for force is the ne
