1、Designation: B937 18Standard Specification forCopper-Beryllium Seamless Tube (UNS Nos. C17500 andC17510)1This standard is issued under the fixed designation B937; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last rev
2、ision. 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 forcopper-beryllium alloy seamless tube in straight lengths.Copper-cobalt-ber
3、yllium alloy UNS No. C17500 and copper-nickel-beryllium alloy UNS No. C17510 will be the alloysfurnished whenever this specification is specified.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 are
4、provided for information onlyand are not considered standard.1.3 The following safety hazard caveat pertains only to thetest method(s) described in this specification. This standarddoes not purport to address all of the safety concerns, if any,associated with its use. It is the responsibility of the
5、 user of thisstandard to establish appropriate safety, health, and environ-mental practices and to determine the applicability of regula-tory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization establish
6、ed in 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 p
7、art of this specification to theextent referenced herein:2.2 ASTM Standards:2B193 Test Method for Resistivity of Electrical ConductorMaterialsB194 Specification for Copper-BerylliumAlloy Plate, Sheet,Strip, and Rolled BarB251/B251M Specification for General Requirements forWrought Seamless Copper an
8、d Copper-Alloy TubeB601 Classification for Temper Designations for Copper andCopper AlloysWrought and CastB846 Terminology for Copper and Copper AlloysE8/E8M Test Methods for Tension Testing of Metallic Ma-terialsE255 Practice for Sampling Copper and Copper Alloys forthe Determination of Chemical Co
9、mpositionE1004 Test Method for Determining Electrical ConductivityUsing the Electromagnetic (Eddy Current) Method3. General Requirements3.1 The following sections of Specification B251/B251M(as noted) constitute a part of this specification:3.1.1 Terminology,3.1.2 Test Specimens,3.1.3 Significance o
10、f Numerical Limits,3.1.4 Inspection,3.1.5 Rejection and Rehearing,3.1.6 Certification,3.1.7 Packaging and Package Marking, and3.1.8 Mill Test Report.4. Terminology4.1 For definitions of terms related to copper and copperalloys, refer to Terminology B846.4.2 Definitions of Terms Specific to This Stan
11、dard:4.2.1 average diameter (for round tubes only), nthe aver-age of the maximum and minimum outside diameters, ormaximum and minimum inside diameters, whichever isapplicable, as determined at any one cross section of the tube.4.2.2 lengths, nstraight pieces of the product4.2.2.1 ends, nstraight pie
12、ces, shorter than the nominallength, left over after cutting the product into mill lengths,stock lengths, or specific lengths. They are subject to minimumlength and maximum weight requirements.4.2.2.2 specific, adjstraight lengths that are uniform inlength, as specified, and subject to established l
13、ength toler-ances.1This specification is under the jurisdiction ofASTM Committee 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 2004. Last previous edition appr
14、oved in 2015 as B937 15. DOI:10.1520/B0937-18.2For 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.*A Summary of C
15、hanges section appears at the end of this standardCopyright ASTM International, 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
16、Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.14.2.2.3 specific with ends, adjspecific lengths, includingends.4.2.2.4 stock, nstraight lengths that are mill cut and s
17、toredin advance of orders. They are usually 8, 10, 12, or 20 ft (2.44,3.05, 3.66, or 6.10 m) and subject to established lengthtolerances.4.2.2.5 stock with ends, adjstock lengths, including ends.4.2.3 tube, na hollow product of round or any other crosssection having a continuous periphery.4.2.3.1 tu
18、be, seamless, adja tube produced with a continu-ous periphery in all stages of the operations.5. Ordering Information5.1 Include the following information in orders for productunder this specification, as applicable:5.1.1 ASTM designation and year of issue,5.1.2 Copper Alloy UNS designation (1.1),5.
19、1.3 Temper (see Section 8),5.1.4 Quantity, pounds or number of pieces,5.1.5 Dimensions, including length if applicable. For tubeor pipe specify either OD/ID, OD/wall, or ID/wall,5.1.6 How furnished: stock lengths with or without ends,specific lengths with or without ends,5.1.7 When product is purcha
20、sed for ASME Boiler andPressure Vessel Code Application, and5.1.8 When product is purchased for agencies of the U.S.government,5.1.9 Special tests or exceptions, if any,5.1.10 Tensile strength test, if required,5.1.11 Special marking or packaging, if required,5.1.12 Inspection, if required (see Spec
21、ification B251/B251M),5.1.13 Certification (see Specification B251/B251M),5.1.14 Mill test report, if required (see Specification B251/B251M).5.2 When material is purchased for agencies of the U.S.government, the material shall conform to the SupplementaryRequirements as defined in the current issue
22、 of SpecificationB251/B251M.6. Materials and Manufacture6.1 Materials:6.1.1 The material of manufacture shall be UNS Alloy No.C17500 or C17510, cast and worked into tubular form, and ofsuch purity and soundness as to be suitable for processing intothe products prescribed herein.6.1.2 The tube shall
23、have heat traceable identity.6.2 Manufacture:6.2.1 The product shall be manufactured by a combinationof hot working or cold working, or both; annealing; orprecipitation heat treatment, or both, as to produce a uniformwrought structure in the finished product, to meet the temperspecified.7. Chemical
24、Composition7.1 The material shall conform to the chemical compositionrequirements in Table 1 for the copper alloy designated in theordering information.7.2 These composition limits do not preclude the presenceof other elements. By agreement between the manufacturer andpurchaser, limits may be establ
25、ished and analysis required forunnamed elements7.3 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 results shall be 99.5 % min.8. Temper8.1 Tempers, as
26、described in Classification B601, availableunder this specification are: TB00 (solution treated (A), TF00(precipitation hardened (AT), TD04 (solution heat-treated andcold worked: hard (H), and TH04 (hard and precipitationheat-treated (HT). These products meet property requirementsin Table 2.9. Preci
27、pitation 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 Conformance to the TF00 (AT) and TH04 (HT) speci-fication limits shown in Table 2, for products supplied in theTB00 (A) or the TD04 (H) te
28、mpers, shall be determined bytesting specimens heat-treated at a uniform temperature of 850to 900 F for the times shown in Table 3.9.3 End products may be heat-treated at other times andtemperatures for specific applications. These special combina-tions of properties such as increased ductility, dim
29、ensionalaccuracy, and endurance strength may be obtained by specialprecipitation-hardening heat treatments. The mechanical re-quirements of Table 2 do not apply to such special heattreatment. Specific test requirements as needed shall be agreedupon between the manufacturer or the supplier and the pu
30、r-chaser of the end product.9.4 TF00 (AT) and TH04 (HT) tempers as standard mill-hardened products has been precipitation heat-treated andtested by the manufacturer. An appropriate time and tempera-ture has been used to produce properties within the specifica-tion limits shown in Table 2. Table 3 do
31、es not apply. Furtherthermal treatment of these tempers is not normally required.TABLE 1 Chemical CompositionConcentration, %ElementCopper AlloyUNS No.C17500Copper AlloyUNS No.C17510Beryllium 0.4-0.7 0.2-0.6Cobalt 2.4-2.7 0.3 maxNickel 1.4-2.2Iron, max 0.10 0.10Aluminum, max 0.20 0.20Silicon, max 0.
32、20 0.20Copper Remainder RemainderB937 18210. Physical Property Requirements10.1 Electrical ConductivityProduct furnished to thisspecification shall conform to the electrical conductivity re-quirement given in Table 2 for the applicable temper, whentested in accordance with Test Method E1004 or by co
33、nvertingfrom resistivity measured in accordance with Test MethodB193.11. Mechanical Property Requirements11.1 Mechanical property requirements are specified inTable 2.11.2 Rockwell HardnessAcceptance or rejection based onmechanical properties shall depend only on Rockwell hard-ness.11.2.1 The refere
34、e product rejection criteria shall be tensileresults, when tested in accordance with Test Methods E8/E8M.11.3 Tension TestThe tension test will be used for quali-fication of all material when specifically required by thepurchaser, as in some government requirements.12. Number of Tests and Retests12.
35、1 Retests:12.1.1 Refer to Specification B251/B251M with the follow-ing additional requirements:12.1.2 Material that fails to conform to the requirements ofthis specification due to inadequate heat-treatment may beheat-treated subsequently and submitted for test. Only twosuch subsequent treatments sh
36、all be permitted.13. Purchases for the U.S. Government13.1 When specified in the contract or purchase order,product purchased for agencies of the U.S. government shallconform to the special government regulations specified in theSupplemental Requirements section of Specification B251/B251M.14. Dimen
37、sions, Mass, and Permissible Variation14.1 The standard method of specifying wall thickness shallbe in decimal fractions of an inch.14.1.1 For the purpose of determining conformance with thedimensional requirements prescribed in this specification, anymeasured value outside the specified values for
38、any dimensionmay be cause for rejection.14.1.2 Tolerances on a given tube may be specified withrespect to any two, but not all three, of the following: outsidediameter, inside diameter, wall thicknessNOTE 1Blank spaces in the tolerance tables indicate either that thematerial is not generally availab
39、le or no tolerances have been established.14.2 Wall-Thickness TolerancesWall-thickness tolerancesshall be in accordance with Table 4 and Table 5.14.3 Diameter TolerancesDiameter Tolerances shall be inaccordance with Table 6.14.4 Length TolerancesLength tolerances shall be in ac-cordance with Table 7
40、14.5 SquarenessFor tube in straight lengths, the departurefrom squareness of the end shall not exceed the following:Specified OutsideDiameter, in. (mm) Tolerance, in./in. (mm/mm)34 (19.1) and over 0.06214.6 Straightness-Refer to Table 7 of Specification B251/B251M.15. Workmanship, Finish, and Appear
41、ance15.1 The product shall be free of defects, but blemishes ofa nature that do not interfere with the intended application areacceptable.16. Sampling16.1 Refer to sampling section in Specification B251/B251M.TABLE 2 Tensile Strength and Rockwell Hardness RequirementsATemper Designation As SuppliedS
42、tandard FormerTensileStrengthksiB(MPaC)YieldStrengthksi (MPa)minRockwellHardness,B ScaleElongationmin, %ElectricalConductivityIACS min, %TB00 A 35-55 (240-380) 50 max 20TD04 H 65-80 (450-550) 60-80 20After Precipitation Heat TreatmentTF00 AT 100-130 (690-895)D80 (550) 92-100 10 45TH04 HT 110-140 (76
43、0-965)D95-102 48AThese values apply to mill products. See Section 11 for exceptions in end products.Bksi = 1000 psi.CSee Appendix.DThe upper limits in the tensile strength column are for design guidance only.TABLE 3 Precipitation Heat-Treatment Time for Acceptance TestsTemper Designation Copper Allo
44、y UNSNo. 17500 at850 F (454 C) to900 F (482 C), hCopper Alloy UNSNo. C17510 at850 F (454 C)Ato900 F (482 C),AhStandard FormerTB00 A 3 3TD04 H 2 2ASpecific temperature used must conform with suppliers certification within 10 F.B937 18316.2 SamplingSample pieces shall be taken from a heatand lot of ma
45、terial processed simultaneously in the sameequipment, as follows:16.2.1 HeatA heat shall be the result of castings pouredsimultaneously from the same source of molten metal16.2.2 LotThe lot shall be a heat, or fraction thereof.17. Specimen Preparation17.1 Chemical AnalysisSample preparation shall be
46、 inaccordance with Practice E255.17.1.1 Analytical specimen preparation shall be the respon-sibility of the reporting laboratory.17.2 Tension TestsSample preparation shall be in accor-dance with Specification B251/B251M.17.3 Rockwell HardnessThe test specimens shall be of asize and shape to permit t
47、esting by the available test equipmentand shall permit testing in a plane parallel to the direction ofdeformation given to the product.17.3.1 The surface of the test specimens shall be sufficientlysmooth and even to permit the accurate determination ofhardness.17.3.2 Each specimen shall be free of s
48、cale and foreignmatter and care shall be taken to avoid change in condition,that is, heating or cold working18. Test Methods18.1 Chemical AnalysesThe chemical composition shall,in cases of disagreement, be determined in accordance with theapplicable method in Annex A1 of Specification B194.18.2 Tens
49、ion TestsTension tests, when required, shall bemade according to Test Methods E8/E8M.19. Test Report19.1 When specified in the contract or purchase order, areport of test results shall be furnished.TABLE 4 Wall-Thickness TolerancesTB00 (A) and TF00 (AT) TempersANOTE 1Maximum Deviation 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)5/8to1(15.9 to 25.4)Over 1 to 2(25.4 to 50.8)Over 2 to 4(50.8 to 102)Over 4
