1、Designation: B640 12aStandard Specification forWelded Copper Tube for Air Conditioning and RefrigerationService1This standard is issued under the fixed designation B640; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of l
2、ast revision. 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 forwelded copper tube for air conditioning and refrigerationservice fo
3、r use in connections, repairs, and alterations.The tubeshall be made from one of the following coppers:Copper UNSNo.PreviouslyUsedDesignationType ofCopperC10100 OFE Oxygen-freeelectronicC10200 OF Oxygen-freewithout-residualoxidantsC12000 DLP Phosphorus-deoxidized,low-residualphosphorusC12200 DHP Pho
4、sphorus-deoxidized,high-residualphosphorusNOTE 1Fittings used for soldered or brazed connections in airconditioning and refrigeration systems are described in ASME StandardB 16.22.NOTE 2The assembly of copper tubular systems by soldering isdescribed in Practice B828.NOTE 3Solders for joining copper
5、tubular systems by descirbed inSpecification B32. The requirements for acceptable fluxes for thesesystems are described in Specification B813.1.2 Copper UNS No. C12200 shall be furnished, unlessotherwise specified. The copper tube shall be supplied inannealed coils or drawn temper straight lengths.1
6、.3 UnitsValues stated in inch-pound units are to beregarded as standard. The values given in parentheses aremathematical conversions to SI units which are provided forinformation only and are not considered standard.1.4 This standard does not purport to address all of thesafety concerns, if any, ass
7、ociated 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 ASTM Standards:2B32 Specification for Solder MetalB153 Test Method for E
8、xpansion (Pin Test) of Copper andCopper-Alloy Pipe and TubingB170 Specification for Oxygen-Free Electrolytic CopperRefinery ShapesB577 Test Methods for Detection of Cuprous Oxide (Hydro-gen Embrittlement Susceptibility) in CopperB601 Classification for Temper Designations for Copper andCopper Alloys
9、Wrought and CastB813 Specification for Liquid and Paste Fluxes for Solder-ing of Copper and Copper Alloy TubeB828 Practice for Making Capillary Joints by Soldering ofCopper and Copper Alloy Tube and FittingsB846 Terminology for Copper and Copper AlloysB900 Practice for Packaging of Copper and Copper
10、 AlloyMill Products for U.S. Government AgenciesB968/B968M Test Method for Flattening of Copper andCopper-Alloy Pipe and TubeE3 Guide for Preparation of Metallographic SpecimensE8/E8M Test Methods for Tension Testing of Metallic Ma-terialsE29 Practice for Using Significant Digits in Test Data toDete
11、rmine Conformance with SpecificationsE53 Test Method for Determination of Copper in UnalloyedCopper by GravimetryE62 Test Methods for Chemical Analysis of Copper andCopperAlloys (Photometric Methods) (Withdrawn 2010)3E243 Practice for Electromagnetic (Eddy-Current) Examina-tion of Copper and Copper-
12、Alloy TubesE255 Practice for Sampling Copper and Copper Alloys for1This 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 Oct. 1, 2012. Published January 2013. Origi
13、nallyapproved in 1978. Last previous edition approved in 2012 as B640 12. DOI:10.1520/B0640-12A.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 Docume
14、nt Summary page onthe ASTM website.3The last approved version of this historical 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 States1th
15、e Determination of Chemical CompositionE527 Practice for Numbering Metals and Alloys in theUnified Numbering System (UNS)2.2 ASME Standards:4B 16.22 Wrought Copper and Copper Alloy Solder JointPressure Fittings3. Terminology3.1 For definitions of terms related to copper and copperalloys, refer to Te
16、rminology B846.3.2 Definitions of Terms Specific to This Standard:3.2.1 tube, air-conditioning, na welded copper tube con-forming to a standard series of sizes and to specified internalcleanness requirements, normally furnished in drawn temperstraight lengths, with the ends capped or sealed.3.2.2 tu
17、be, refrigeration-service, na welded copper tubeconforming to a standard series of sizes and to special internalcleanness and dehydration requirements, normally furnished insoft temper coils, with ends capped or sealed.4. Ordering Information4.1 Include the following information when placing ordersf
18、or product under this specification, as applicable:4.1.1 ASTM designation and year of issue,4.1.2 Copper Alloy UNS No. designation,4.1.3 Temper (Section 7),4.1.4 Dimensions: diameter, wall thickness, length, and soforth (Section 11),4.1.5 How furnished (straight lengths or coils),4.1.6 Quantity: tot
19、al weight or number of pieces or coils ofeach copper, size, and temper.4.2 The following options are available and should bespecified at the time of placing the order when required:4.2.1 Hydrogen embrittlement susceptibility (9.3),4.2.2 Microscopical Examination (9.2),4.2.3 Expansion test (9.1),4.2.
20、4 Cleanness test (10.2),4.2.5 Flattening test (9.4),4.2.6 Reverse bend test (9.5),4.2.7 Certification (Section 20),4.2.8 Test report (Section 21), and4.2.9 When product is purchased for agencies of the U.S.Government (10.3).5. Materials and Manufacture5.1 MaterialThe material of manufacture shall be
21、 sheet orstrip of Copper Alloy UNS No. C10100, or C10200, orC12000, or C12200 of such purity and soundness as to besuitable for processing into welded tube to meet the propertiesprescribed herein.5.2 Manufacture:5.2.1 The product shall be manufactured by forming thematerial into a tubular shape on a
22、 suitable forming mill andwelded using an automatic process.5.2.2 The product shall be cold worked to the finished sizeand wall thickness and subsequently annealed, when required,to meet the temper properties specified.5.2.3 The product shall conform to “fully finished tube” asrequired in 5.2.3.1 an
23、d 5.2.3.2:5.2.3.1 Welded tube with internal and external flash re-moved by scarfing, and the tube subsequently cold drawn, overa mandrel and annealed as necessary to conform to thespecified temper.5.2.3.2 Welded tube that has been mechanically worked intoa smooth tube without the need for internal o
24、r external scarfing,or other metal removal and subsequently cold drawn over amandrel and annealed as necessary to conform to the specifiedsize and temper.5.2.4 Coiled lengths specified as O60, soft-annealed temper,shall be bright annealed after coiling, then dehydrated, andcapped, plugged, crimped,
25、or otherwise closed at both ends soas to maintain the internal cleanness of the tubing under normalconditions of handling and storage.5.2.5 Straight lengths specified as H58, hard-drawn temper,shall be cleaned and capped, plugged, or otherwise closed atboth ends so as to maintain the internal cleann
26、ess of the tubingunder normal conditions of handling and storage.6. Chemical Composition6.1 The material shall conform to the chemical composi-tional requirements in Table 1 for the Copper UNS No.designation specified in the ordering information.6.2 These composition limits do not preclude the prese
27、nceof other elements. By agreement between the manufacturer andpurchaser, limits may be established and analysis required forunnamed elements.7. Temper7.1 The standard tempers for products described in thisspecification are given in Table 2.7.1.1 Drawn general purpose H58.7.1.2 Annealed temper O60.7
28、.2 Tempers are defined in Classification B601. Otherspecial anneal tempers may be supplied as agreed uponbetween the manufacturer or supplier and the purchaser.4Available from American Society of Mechanical Engineers (ASME), ASMEInternational Headquarters, Three Park Ave., New York, NY 10016-5990, h
29、ttp:/www.asme.org.TABLE 1 Chemical RequirementsCopperUNS No.Copper,AminPhosphorusMin MaxC10100 99.99BC. CC10200 99.95D. .C12000 99.90 0.004 0.012C12200 99.9 0.015 0.040ACopper (including silver).BThis value is exclusive of silver and shall be determined by difference of “impuritytotal” from 100 %. “
30、Impurity total” is defined as the sum of sulfur, silver, lead, tin,bismuth, arsenic, antimony, iron, nickel, zinc, phosphorus, selenium, tellurium,manganese, cadmium, and oxygen present in the sample.CImpurity parts per million maximums for C10100 shall be: antimony 4, arsenic 5,bismuth 1, cadmium 1
31、, iron 10, lead 5, manganese 0.5, nickel 10, oxygen 5,phosphorus 3, selenium 3, silver 25, sulfur 15, tellurium 2, tin 2, and zinc 1.DOxygen in C10200 shall be 10 ppm max.B640 12a28. Mechanical Property Requirements8.1 Tensile Strength Requirements:8.1.1 Product furnished under this specification sh
32、all con-form to the tensile requirements prescribed in Table 2 whentested in accordance with Test Methods E8/E8M.8.1.1.1 Acceptance or rejection based upon mechanicalproperties shall depend only on tensile strength.9. Performance Requirements9.1 Expansion Test:9.1.1 When specified in the contract or
33、 purchase order,product test specimens from tube furnished in the O60 an-nealed temper shall be expanded in accordance with TestMethod B153 with an expansion of the outside diameter in thefollowing percentage:Outside Diameter,in. (mm)Expansion of OutsideDiameter, %58 (15.9) and under 30Over58 (15.9)
34、 259.1.2 The expanded tube shall show no cracking or otherdefects visible to the unaided eye.9.2 Microscopical ExaminationWhen specified in thecontract or purchase order, product test specimens of CopperUNS Nos. C10100, C10200, and C12000 shall be free ofcuprous oxide as determined by Test Method A
35、of TestMethods B577.9.3 Hydrogen Embrittlement SusceptibilityWhen speci-fied in the contract or purchase order, product test specimens ofCopper UNS Nos. C10100, C10200, C12000, and C12200shall conform to the requirements of Test Method B of TestMethods B577.9.4 Flattening Test:9.4.1 When specified i
36、n the contract or purchase order, theflattening test shall be performed in accordance with TestMethod B968/B968M.9.5 Reverse Bend TestWhen specified in the contract orpurchase order, the product test specimens when flattened andbent in accordance with the test method described in 16.2.5,shall show n
37、o evidence of cracks, lack of penetration in theweld, or overlaps resulting from flash removal visible to theunaided eye which are considered unacceptable for the in-tended application.10. Other Requirements10.1 Electromagnetic (Eddy-Current) Test:10.1.1 Each straight length tube, up to and includin
38、g 318-in.(79.4-mm) outside diameter, shall be passed through an eddy-current testing unit adjusted to provide information on thesuitability of the tube for the intended application.10.1.2 Tubes that do not actuate the signaling device of theeddy current testing unit shall be considered as conforming
39、 tothe requirements of the test. Testing shall follow the proceduresof Practice E243, except for the determination of “end effect.”10.1.3 Testing of coiled lengths shall be subject to negotia-tion between the manufacturer and the purchaser.10.1.4 For tubes greater than 318 in. (79.4 mm) in outsidedi
40、ameter, the manufacturer and purchaser shall agree onwhatever nondestructive testing is required.10.2 Cleanness Test:10.2.1 When specified in the contract or purchase order, acleanness test described in 16.2.9 shall be performed.10.2.1.1 After evaporation of the cleaning solvent, theresidue weight s
41、hall not exceed 0.0035 g/ft2(0.038 g/m2). Themaximum amount of residue in grams per tube shall not exceedthe limits in Tables 3 and 4.10.3 Purchases for Agencies of the U.S. GovernmentWhen specified in the contract or purchase order, productpurchased for agencies of the U.S. government shall conform
42、to the requirements stipulated in the Supplementary Require-ments.11. Dimensions, Mass, and Permissible Variations11.1 The standard dimensions, weights per foot, and toler-ances for the various nominal sizes are given in Tables 5 and 6.11.2 Wall Thickness and Diameter:11.2.1 For Coil LengthsTable 5.
43、11.2.2 For Straight LengthsTable 6.11.3 Length:11.3.1 The standard length for coils shall be 50 ft (15.2 m).The length tolerances for all coils shall be +12 in. (300 mm)and 0 in.TABLE 2 Mechanical Property RequirementsCopper UNS Nos. C10100, C10200, C12000, and C12200Form TemperTensile Strength, Min
44、 Elongation in 2in. (50 mm), Min,%ksiAMPaBCoiled lengths O60 30 205 40Straight lengths H58 36 250 . . .Aksi = 1000 psi.BSee Appendix X1.TABLE 3 Interior Surface Residue Limits of Soft Coiled LengthsAStandard Size, in.Wall Thickness,in. (mm)Residue LimitBper 50ft (15.2 m) coil, gCopper UNSNos. C10100
45、,C10200,C12000, andC12200Copper UNSNos. C10100,C10200,C12000, andC1220018 0.030 (0.762) 0.0030316 0.030 (0.762) 0.005814 0.030 (0.762) 0.0087516 0.032 (0.813) 0.011438 0.032 (0.813) 0.014312 0.032 (0.813) 0.020058 0.035 (0.889) 0.025434 0.035 (0.889) 0.031234 0.042 (1.07) 0.030578 0.045 (1.14) 0.036
46、0118 0.050 (1.27) 0.0470138 0.055 (1.40) 0.0580158 0.060 (1.52) 0.0690ASee also Table 5.BResidue limit 0.0035-g/ft2(0.038-g/m2) inside area. The internal surface area perfoot or tube is determined by the equation (3.1416 inside diameter 144)/1728.B640 12a311.3.2 The standard length for straight leng
47、ths shall be 20 ft(6.10 m). The length tolerances for all lengths shall be +1 in.(25 mm) and 0 in.11.4 Roundness:11.4.1 Straight LengthsFor unannealed drawn tube instraight lengths, the roundness tolerance is specified in Table 7.The deviation from roundness is measured as the differencebetween majo
48、r and minor diameters as determined at any onecross section of the tube. Roundness tolerance has not beenestablished for annealed tube in straight lengths.11.4.2 Coil LengthsRoundness tolerance has not beenestablished for tubes furnished in coils.11.5 Squareness of CutFor tube in straight lengths, t
49、hedeviation from squareness is measured as the difference be-tween one side of a cross section of tube from the opposite sidewhen measured against the projected perpendicularity of theplane of the projected center of the tube. The departure fromsquareness of the end of any tube shall not exceed more than0.010 in. (0.25 mm) for tube up to and including58-in. (15.9mm) standard size; and not more than 0.016 in./in. (0.016mm/mm) of outside diameter, for tube larger than58-in. (15.9mm) standard size.NOTE 4For the purpose of determining confo
