1、Designation: B643 18Standard Specification forCopper-Beryllium Alloy Seamless Tube1This standard is issued under the fixed designation B643; 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 par
2、entheses 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 requirements for copper-beryll
3、ium alloy seamless tube in straight lengths. CopperAlloyUNS C17200 will be the alloy furnished whenever Specifica-tion B643 is specified.1.2 UnitsThe values stated in inch-pound units are to beregarded as standard. The values given in parentheses aremathematical conversions to SI units that are prov
4、ided forinformation only and are not considered standard.1.3 The following safety hazard caveat pertains only to thetest methods described in this specification.1.4 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the us
5、er of this standard to establish appro-priate safety, health, and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in
6、 the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 The following documents of the issue in effect on dateof material purchase form a part o
7、f this specification to theextent referenced herein:2.2 ASTM Standards:2B194 Specification for Copper-BerylliumAlloy Plate, Sheet,Strip, and Rolled BarB251 Specification for General Requirements for WroughtSeamless Copper and Copper-Alloy Tube (Metric) B0251_B0251MB601 Classification for Temper Desi
8、gnations for Copper andCopper AlloysWrought and CastB846 Terminology for Copper and Copper AlloysE3 Guide for Preparation of Metallographic SpecimensE8/E8M Test Methods for Tension Testing of Metallic Ma-terialsE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE29 Practice for Using Signi
9、ficant Digits in Test Data toDetermine Conformance with SpecificationsE112 Test Methods for Determining Average Grain SizeE255 Practice for Sampling Copper and Copper Alloys forthe Determination of Chemical CompositionE527 Practice for Numbering Metals and Alloys in theUnified Numbering System (UNS)
10、3. Terminology3.1 DefinitionsFor terms relating to copper and copperalloys, refer to Terminology B846.3.2 Definitions of Terms Specific to This Standard:3.2.1 stock, nstraight lengths that are mill cut and storedin advance of orders. They are usually 8, 10, 12, or 20 ft (2.44,3.05, 3.66, or 6.10 m)
11、and subject to established lengthtolerances.4. General Requirements4.1 The following sections of Specification B251 constitutea part of this specification:4.1.1 Workmanship, Finish and Appearance,4.1.2 Significance of Numerical limits,4.1.3 Inspection,4.1.4 Rejection and Rehearing,4.1.5 Certificatio
12、n,4.1.6 Mill Test Report, and4.1.7 Packaging and Package Marking.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,1This specification is under the jurisdiction ofASTM Committee
13、 B05 on Copperand Copper Alloys and is the direct responsibility of Subcommittee B05.04 on Pipeand Tube.Current edition approved March 1, 2018. Published March 2018. Originallyapproved in 1978. Last previous edition approved in 2016 as B643 12 (2016).DOI: 10.1520/B0643-18.2For referenced ASTM standa
14、rds, 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.*A Summary of Changes section appears at the end of this standardCopyright ASTM Internat
15、ional, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Gui
16、des and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.15.1.2 Copper (Alloy) UNS No. designation (see 1.1),5.1.3 Temper (see Section 8),5.1.4 Dimensions, specify O.D./I.D., O.D./wall, or I.D./walland include length if applicable,5.1.5 How furnished
17、, stock lengths with or without ends,specific lengths with or without ends,5.1.6 Quantity: total weight or number or pieces,5.1.7 Special tests or exceptions, if any,5.1.8 Hardness tests, if required,5.1.9 Special tests such as tension test or grain size, ifrequired,5.1.10 Special marking or packagi
18、ng, if required,5.1.11 Inspection, if required (see Specification B251),5.1.12 Certification, if required (see Specification B251),and5.1.13 Mill test report, if required (see Specification B251).5.2 If the product is purchased for agencies of the U.S.Government (see Supplementary Requirements secti
19、on ofSpecification B251, for additional requirements, if specified).6. Materials and Manufacture6.1 Material:6.1.1 The material of manufacture shall be billets, cast barsor tube of Copper Alloy UNS No. C17200, of such purity andsoundness as to be suitable for processing into the productsprescribed h
20、erein.6.1.2 The tube shall have heat traceable identity.6.2 Manufacture:6.2.1 The product shall be manufactured by such hotworking, cold working, annealing, or precipitation heattreatment, or both, as to produce a uniform wrought structurein the finished product.7. Chemical Composition7.1 The materi
21、al shall conform to the chemical requirementsin Table 1 for the copper alloy UNS No. C17200 specified inthis ordering information.7.2 These composition limits do not preclude the presenceof other elements. By agreement between the manufacturer andpurchaser, limits may be established and analysis req
22、uired forunnamed elements.7.3 For alloys in which copper is listed as “remainder,”copper is the difference between the sum of results of allelements determined and 100 %. When all elements in Table 1are determined, the sum of the results shall be 99.5 % mini-mum.8. Temper8.1 The standard tempers for
23、 products described in thisspecification are given in Table 2 and Table 3.8.1.1 Solution heat-treated TB00 (A).8.1.2 Heat Treated and Cold Worked to hard temper TD04(H).8.1.3 Precipitation Hardened TF00 (AT).8.1.4 Hard and Precipitation Heat Treated TH04 (HT).8.2 Tempers available under this specifi
24、cation are defined inClassification B601.9. Precipitation Heat Treatment9.1 When material is purchased in the TB00(A) or theTD04(H) tempers, the precipitation heat treatment is per-formed by the purchaser.9.2 When testing for conformance to the TF00(AT) and theTH04(HT) property requirements shown in
25、 Table 3 for prod-ucts supplied in the TB00(A) and TD04(H) tempers, theappropriate test specimens shall be heat treated for times andtemperatures within those stated in Table 4. The times andtemperatures used by the manufacturer to qualify the materialwill be stated on the mill test report. The use
26、of other times andtemperatures, within the allowable ranges, shown in Table 4,may produce properties other than those stated on the mill testreport. This will not be cause for rejection.9.3 This material may be heat-treated at other times andtemperature for specific applications. These special combi
27、na-tions of properties, such as increased ductility, dimensionalaccuracy, endurance life, may be obtained by specialprecipitation-hardening heat treatments. The mechanical re-quirements of Table 3 do not apply to such special heattreatments. Specific test requirements as needed shall be agreedupon b
28、etween the manufacturer, or supplier, and the purchaserof the end product.9.4 TF00 (AT) and TH04 (HT) tempers are standard mill-hardened products that have been precipitation heat-treated andtested by the manufacturer. An appropriate time and tempera-ture has been used to produce properties within t
29、he specifica-tion limits shown in Table 3. Table 4 does not apply. Further,thermal treatments of these tempers is not normally required.10. Physical Property Requirements10.1 Microstructure and Grain Size10.1.1 The product in the precipitation heat-treated condi-tion shall have a microstructure with
30、 a minimum of secondphase (beta) constituents.10.1.2 Grain size, if required, shall be agreed upon betweenthe purchaser and the manufacturer or the supplier and shall bedetermined in accordance with Test Methods E112.11. Mechanical Property Requirements11.1 Rockwell Hardness Requirement:11.1.1 Produ
31、ct furnished under this specification shall con-form to the Rockwell hardness requirements in Table 2 andTable 3, when tested in accordance with Test Methods E18.11.1.2 Acceptance or rejection based on mechanical prop-erties shall depend only on Rockwell hardness.TABLE 1 Chemical RequirementsElement
32、Composition, %Copper Alloy UNS No. C17200Beryllium 1.802.00Additive elements:Nickel + cobalt, min 0.20Nickel + cobalt + iron, max 0.6Aluminum, max 0.20Silicon, max 0.20Copper remainderB643 18211.1.3 Where agreement on Rockwell hardness tests cannotbe reached, the tensile strength requirements of Tab
33、le 2 andTable 3 shall be the basis for acceptance or rejection.11.2 Tension Strength Requirements:11.2.1 When specified in the contract or purchase order,product furnished under this specification shall conform to thetensile strength requirements in Table 2 and Table 3, whentested in accordance with
34、 Test Methods E8/E8M.11.2.2 Only when specified in the contract or purchaseorder, acceptance or rejection based upon mechanical proper-ties shall depend only on tensile strength.12. Dimensions, Mass and Permissible Variations12.1 General:12.1.1 The standard method of specifying wall thicknessshall b
35、e in decimal fractions of an inch.12.1.2 For the purpose of determining conformance with thedimensional requirements prescribed in this specification, anymeasured value outside the specified values for any dimensionmay be cause for rejection.12.1.3 Tolerances on a given tube may be specified withres
36、pect to any two, but not all three, of the following: outsidediameter, inside diameter, wall thickness.NOTE 1Blank spaces in the tolerance tables indicate either that thematerial is not generally available or no tolerances have been established.12.2 Wall-Thickness TolerancesWall-thickness tolerances
37、shall be in accordance with Table 5 and Table 6.12.3 Diameter TolerancesDiameter tolerances shall be inaccordance with Table 7.12.4 Length TolerancesLength tolerances shall be in ac-cordance with Table 8.12.5 SquarenessFor tube in straight lengths, the departurefrom squareness of the end shall not e
38、xceed the following:Specified OutsideDiameter, in. (mm) Tolerance, in./in. (mm/mm)34 (19.1) and over116 (1.6)12.6 StraightnessRefer to Table 7 of Specification B251.13. Sampling13.1 SamplingThe lot size, portion size, and selection ofsample pieces shall be as follows:13.1.1 Lot SizeThe lot size shal
39、l be 10 000 lb or fractionthereof.13.1.2 Portion SizeTwo sample pieces shall be taken fromeach lot.14. Number of Tests and Retests14.1 Test:14.1.1 Section 8, on Tests, of Specification B251 constitutesthis part of this specification.14.2 Other Tests:14.2.1 Test specimens shall be taken from the samp
40、le piecesselected in accordance with 13.1 for any other tests required onthe contract or purchase order.14.2.1.1 In the case of product produced to the TB00 orTD04 condition, two test specimens shall be taken from eachTABLE 2 Mechanical Property Requirements Before Precipitation Heat TreatmentTemper
41、 DesignationADiameter Distance BetweenCross-SectionalParallel Surfaces, in. (mm)RockwellHardness,BB ScaleTensile StrengthCStandard Former ksiD(MPa)TB00 Solution-heat treated (A)34 (19.1) and over 4585 6085 (410570)TD04 Hard (H)34 (19.1) and over 88103 85115 (590800)AStandard designations defined in
42、Classification B601.BHardness values shown apply only to direct determinations, not converted values.CHardness is the normal commercial acceptance criterion. Mechanical properties apply only when specifically required.Dksi = 1000 psi.TABLE 3 Tensile Strength and Hardness Requirements After Precipita
43、tion Heat TreatmentATemper DesignationBDiameter or DistanceBetween Cross-SectionalParallel Surfaces, in. (mm)RockwellHardness, C,minTensile StrengthCYield Strength (min) (0.2 %Offset)Elongation(min) in 4 DStandard Former ksiD(MPa) ksi (MPa)TF00 AT58 (15.9) and over 36 165190E(11401310) 130 (900) 3 %
44、TH04 HT58 (15.9) to 1 (25.4) incl 38 180215E(12401480) 155 (1070) 4 %Over 1 (25.4) to 2 (50.8) incl 37 175215E(12101480) 150 (1040) 4 %Over 2 (50.8) to 312 (88.9)incl37 175215E(12101480) 140 (970) 4 %AThese values apply to mill products. See 9.3 for exceptions in end products.BStandard designations
45、defined in Classification B601.CHardness is the normal commercial acceptance criterion. Mechanical properties apply only when specifically required.Dksi = 1000 psi.EThe upper limits in the tensile strength column are for design guidance only.TABLE 4 Standard Precipitation Heat-Treatment Time forAcce
46、ptance TestsTemper DesignationDiameterTime at600to 675 F(316 to357 C), hBefore HardeningStandard FormerTF00TH04Solution-heat treated (A)Hard (H)all sizesall sizes3423B643 183sample piece. One is to be tested in the as-sampled conditionand one in the precipitation heat-treated condition.14.2.1.2 In t
47、he case of product produced to the precipitationheat-treated condition, one specimen from each sample shall betested.14.2.2 If microstructure and grain-size are required on thecontract or purchase order, the following shall occur:14.2.2.1 In the case of product produced to the TB00 orTD04 condition,
48、 one specimen shall be taken from eachsample, precipitation heat-treated, and tested.14.2.2.2 In the case of product produced to the precipitationheat-treated condition, one specimen from each sample shall betested.TABLE 5 Wall-Thickness TolerancesTD04 (H) and TH04 (HT) TempersANOTE 1Maximum Deviati
49、on of Any PointThe following tolerances are plus and minus: if tolerances all plus or all minus are desired double thevalues given.Wall Thickness, in. (mm)Outside Diameter, in. (mm)Over58 to1 (15.9 to 25.4),inclOver 1 to 2(25.4 to 50.8),inclOver 2 to 4(50.8 to 102),inclOver 4 to 7(102 to 173),inclOver 7 to 12(173 to 305),incl. . . .Over 0.034 (0.864), to 0.057 (1.45) incl 0.0045 (0.11) 0.0045 (0.11) 0.0065 (0.17) 0.009 (0.23) .Over 0.057 (1.45) to 0.082 (2.08) incl 0.005 (0.13) 0.005 (0.13) 0.0075 (0.19) 0.010 (0.25) 0.013 (0.33)Over
