1、This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(
2、TBT)Committee.Designation:B280-20Standard Specification forSeamless Copper Tube for Air Conditioning andRefrigeration Field Service1This standard is issued under the fixed designation B280:the number immediately following the designation indicates the year oforiginal adoption or.in the case of revis
3、ion.the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)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*1.5 This international s
4、tandard was developed in accor-1.1 This specification establishes the requirements for seam-dance with internationally recognized principles on standard-less copper tube intended for use in the connection,repairs,orization established in the Decision on Principles for thealternations of air conditio
5、ning or refrigeration units in theDevelopment of International Standards,Guides and Recom-field.mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.Nore 1-Fittings used for soldered or brazed connections in airconditioning and refrigeration systems are describe
6、d in ASME Standard2.Referenced DocumentsB16.22.NorE 2-The assembly of copper tubular systems by soldering is2.1 ASTM Standards:2described in Practice B828.B32 Specification for Solder MetalNorE 3-Solders for joining copper tubular systems are described inSpecification B32.The requirements for accept
7、able fluxes for theseB153 Test Method for Expansion(Pin Test)of Copper andsystems are described in Specification B813.Copper-Alloy Pipe and Tubing1.2 The tube shall be produced from the following coppers,B577 Test Methods for Detection of Cuprous Oxide(Hydro-and the manufacturer has the option to su
8、pply any one of them,gen Embrittlement Susceptibility)in Copperunless otherwise specified:B601 Classification for Temper Designations for Copper andCopper Alloys-Wrought and CastCoppePreviously UsedUNS No.DesignationDescriptionB813 Specification for Liquid and Paste Fluxes for Solder-ing of Copper a
9、nd Copper Alloy TubeC10200OFOxygen free withoutB828 Practice for Making Capillary Joints by Soldering ofresidual deoxidantsC12000DLPPhosphorus deoxidized,Copper and Copper Alloy Tube and Fittingslow residual phosphorusB900 Practice for Packaging of Copper and Copper AlloyC12200DHPPhosphorus deoxidiz
10、ed,Mill Products for U.S.Government Agencieshigh residual phosphorusE3 Guide for Preparation of Metallographic Specimens1.3 The values stated in inch-pound units are to be regardedE8/E8M Test Methods for Tension Testing of Metallic Ma-as standard.The values given in parentheses are mathematicalteria
11、lsconversions to SI units that are provided for information onlyE29 Practice for Using Significant Digits in Test Data toand are not considered standard.Determine Conformance with Specifications1.4 The following hazard statement pertains only to the testE53 Test Method for Determination of Copper in
12、 Unalloyedmethod described in 18.2.4 of this specification:This standardCopper by Gravimetrydoes not purport to address all of the safety concerns,if any.E62 Test Methods for Chemical Analysis of Copper andassociated with its use.It is the responsibility of the user of thisCopper Alloys(Photometric
13、Methods)(Withdrawn 2010)standard to establish appropriate safety,health,and environ-E112 Test Methods for Determining Average Grain Sizemental practices and determine the applicability of regulatoryE243 Practice for Electromagnetic(Eddy Current)Examina-limitations prior to use.tion of Copper and Cop
14、per-Alloy TubesThis specification is under the jurisdiction of ASTM Committee B05 on CopperFor referenced ASTM standards,visit the ASTM website,www.astm.org.and Copper Alloys and is the direct responsibility of Subcommittee B05.04 on Pipecontact ASTM Customer Service at serviceastm.org.For Annual Bo
15、ok of ASTMand Tube.Standards volume information,refer to the standards Document Summary page onCurrent edition approved April 1,2020.Published April 2020.Originallythe ASTM website.Last previous cdition approved in 201920-19.DOl:The last approved version of this historical standard is referenced onw
16、ww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM Intemational,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesCopyright by ASTM Intl(all rights reserved);Sat Apr 11 06:37:49 EDT 2020Downloaded/printed byTongji University(Tongj
17、i University)pursuant to License Agreement.No further reproductions authorized.46B280-20E255 Practice for Sampling Copper and Copper Alloys for3.1.4.1 specific,n-straight lengths that are uniform inthe Determination of Chemical Compositionlength,as specified,and subject to established length toler-2
18、.2 ASME Standard:ances.B16.22 Wrought Copper and Copper Alloy Solder Joint3.1.4.2 standard,n-uniform lengths recommended in aPressure FittingsSimplified Practice Recommendation or established as a Com-3.Terminologymercial Standard.3.1 Definitions:3.1.5 tube,seamless,n-a tube produced with a continuo
19、us3.1.1 average diameter(for round tubes only),n-the aver-periphery in all stages of the operations.age of the maximum and minimum outside diameters,or3.1.5.1 tube,air conditioning,n-a seamless copper tubemaximum and minimum inside diameters,whichever isconforming to a standard series of sizes(Table
20、 1)and toapplicable,as determined at any one cross section of the tube.specified internal cleanness requirements,normally furnished3.1.2 bright anneal,n-a thermal treatment carried out in ain drawn temper straight lengths with the ends capped orsealed.controlled atmosphere so that surface oxidation
21、is reduced to aminimum and the surface remains relatively bright.3.1.5.2 tube,refrigeration service,n-a seamless copper3.1.3 coil.n-a length of the product wound into a series oftube conforming to a standard series of sizes(Table 2)and toconnected turns.The unqualified termcoilas applied to tubespec
22、ial internal cleanliness and dehydration requirements,normally furnished in soft temper coils and with ends cappedusually refers to a bunched coil.or sealed.3.1.3.1 bunched,n-a coil in which the turns are bunchedand held together such that the cross section of the bunched3.2 Definitions of Terms Spe
23、cific to This Standard:turns is approximately circular.3.2.1 capable of-the test need not be performed by theproducer of the material.However,if subsequent testing by the3.1.3.2 level or traverse wound,n-a coil in which the turnspurchaser establishes that the material does not meet theseare wound in
24、to layers parallel to the axis of the coil such thatrequirements,the material shall be subject to rejection.successive turns in a given layer are next to one another.(Sometimes called helical coil.)4.Ordering Information3.1.3.3 single layer flat,n-a coil in which the product is4.1 Include this infor
25、mation for contracts or purchase ordersspirally wound into a single disc-like layer.(Sometimes calledpancake coilorsingle layer spirally wound coil.)for products furnished to this specification:4.1.1 ASTM designation and year of issue(for example3.1.3.4 double layer flat,n-a coil in which the produc
26、t isB280-03):spirally wound into two connected disc-like layers such that4.1.2 Copper UNS No.(not necessary unless a specificone layer is on top of the other.(Sometimes called doublecopper is desired):layer pancake coilor double layer spirally wound coil.)4.1.3 Dimensions;wall thickness,diameter,and
27、 so forth3.1.4 lengths,n-straight pieces of the product.(Section 13);4.1.4 How furnished:coils or straight lengths;4.1.5 Temper(for example,060,062,H55,or H58);4Available from American Society of Mechanical Engineers(ASME).ASME4.1.6 Size(Tables 1 and 2):International Headquarters.Two Park Ave.New Yo
28、rk.NY 10016-5990.http:/4.1.7 Length(Section 13);www.asme.org.TABLE 1 Standard Dimensions and Weights,and Tolerances in Diameter and Wall Thickness for Straight LengthsNorE 1-Applicable to drawn temper tube only.TolerancesStandard Size,in.Outside Diameter,in.(mm)Wall Thickness,in.(mm)Weight.Ib/ft(kg/
29、m)Diameter,Plus and Minus.Wall Thickness,Plus andAverage Outsidein.(mm)Minus,in.(mm)0.250(6.35)0.0250.6350.068(0.1020.0010.0250.00250.060.375(9.52)0.030(0.762)0.1260.187)0.0010.025)0.0030.08)0500112710.035(0.8890.198(0.295)0.0010.025】0.0040.10j0.625(15.9)0.040(1.020285(0.4240.0010.0250.004(0.10】%0.7
30、5019.1)0.0421.070.36210.539)0.001f0.0250.0040.10j0.875(223)0.045(1.140.455(0.6770.0010.0250.004(0.101%1.125128.6】0.050112710.65510.975)0.0015f0.0380.0040.103#13751349】0055114008841.3200.001510.03900060.15151.625(41.30.060(1.521.141.700.002(0.0510.006(0.15】2%2.125(54.0)0.070(1.781752600.0020.0510.007
31、(0.182582825188.70.080(2.03248(3.690.0020.0510.008(0.203%3.125(79.4)0.090(2.293.33(4.960.0020.0510.009(0.23)3983.625(92.1)0.1002.54)4296.38)0.0020.051】0.0100.25464.125(105)0.1102.795388.01)】0.0020.0510.011028)The average outside diameter of a tube is the average of the maximum and minimum outside di
32、ameters as determined at any one cross section of the tube.The tolerances listed represent the maximum deviation at any point.Copyright by ASTM Intl(all rights reserved);Sat Apr 11 06:37:49 EDT 20202Downloaded/printed byTongji University(Tongji University)pursuant to License Agreement.No further rep
33、roductions authorized.4B280-20TABLE 2 Standard Dimensions and Weights,and Tolerances in Diameter and Wall Thickness for Coil LengthsTolerancesStandard Size,in.Outside Diameter,in.(mm)Wall Thickness,in.(mm)Weight.Ib/ft(kg/m)Diameter,Plus and Minus.Wall Thickness,Plus andAverageOutsidein.(mm)Minus.in.
34、(mm)0.1253.18)0.0300.7620.03470.0516)00021005110003008160.187(4.75)0.03010.7620.05750.0856)0.002(0.051】0.003(0.08Va0.2506.35)0.0300.7620.08040.12010.0020.0510.0030.0810.312(7.920.032(0.8130.10g(0.1620.002(0.0510.003(0.08%0.375(9.52)0.03210.8130.1340.1990.0020.0510.0030.08050012710.032108130182(0.271
35、0.0021005100030.080.625(15.9)0.035(0.8890.251(0.3730.002(0.0510.0040.11%40.750(19.1)0.035(0.889)0305104540.0025(0.064)0.004(0.11)0.875(22.3)0.045(1.140.455(0.6770.003(0.0760.004(0.111%1.12528.6)0.050(1.27刀0.6550.97510.0035(0.0890.005(0.131%1.37534.90.055(1.400.88413210.004(0.10)0.0060.151%1.625(41.3
36、)0.060(1.521.14(1.70)0.0045(0.11)0.006(0.15)The average outside diameter of a tube is the average of the maximum and minimum outside diameters as determined at any one cross section of the tube.8 The tolerances listed represent themaximum deviation at any point.TABLE 3 Chemical Composition-Weight4.1
37、.8 Quantity(total pieces of each size and type);andElementCopper UNS No.4.1.9 When product purchased for agencies of the U.S.C10200WC12000C12200Government(Section 12).Copper,min99.9599.9099.9Phosphorus0.004-0.0120.015-0.0404.2 The following options are available and shall be speci-Oxygen shall be 10
38、 ppm max.fied in the contract or purchase order when required:8 Copper silver.4.2.1 Tensile test(Section 9):4.2.2 Expansion test(Section 10.1);4.2.3 Cleanness test(Sections 10.2 and 18.2.4):TABLE 4 Tensile Requirements4.2.4 Microscopical ExaminationforHydrogenTemper DesignationTensile StrengthElonga
39、tion inEmbrittlement,Procedure B(10.3.2):Form2in.(50.8StandardFormerMPamm),min,4.2.5 Certification(Section 22);andCoiled lengths060soft annealed 30 min 205 min404.2.6 Test report(Section 23).Coiled/straight062heavy anneal3020540lengths5.Materials and ManufactureStraight lengthsH5日light drawr2R472502
40、2日Straight lengthsH58drawn general36 min 250 min5.1 Materials-The material of manufacture shall be billets,purposebars,or tube and shall be of such soundness as to be suitableA ksi=1000 psi.for processing into the tubular products described.B See Appendix X1.5.2 Manufacture:5.2.1 The tube shall be m
41、anufactured by such hot or coldagreed upon by the manufacturer or supplier and the purchaser,working processes as to produce a homogeneous uniformlimits shall be established and analysis required for unnamedwrought structure in the finished product.The tube shall beelements.cold drawn to the finishe
42、d size and wall thickness.5.2.2 Coiled lengths specified 060,soft annealed temper,or7.Temper062.heavy anneal temper,shall be bright annealed after7.1 Product under this specification shall be furnished incoiling,then dehydrated,and capped,plugged,crimped,or060(soft annealed).062(heavy anneal).H55(li
43、ght drawn).orotherwise closed at both ends so as to maintain the internalH58(drawn general purpose)temper,as specified in thecleanness of the tubing under normal conditions of handlingcontract or purchase order and defined in Classification B601.and storage.8.Grain Size5.2.3 Straight lengths specifi
44、ed H55 light drawn or H58drawn general purpose shall be cleaned and capped,plugged,8.1 Coiled lengths in the 060 temper shall have a recrys-or otherwise closed at both ends so as to maintain the internaltallized grain size of 0.040 mm minimum when determined incleanness of the tubing under normal co
45、nditions of handlingaccordance with Test Methods E112.062 allows a maximumand storage.grain size of 0.050 mm.6.Chemical Composition9.Tensile Requirements6.1 The chemical composition shall conform to the chemi9.1 The tube shall conform to the tensile requirementscal requirements in Table 3 for the sp
46、ecific type of copper.prescribed in Table 4.6.1.1 These limits do not preclude the presence of other9.2 Tensile tests need not be performed except when speci-elements.When included in the contract or purchase order,andfied in the contract or purchase order.Copyright by ASTM Intl(all rights reserved)
47、:Sat Apr 1106:37:49 EDT 2020 3Downloaded/printed byTongji University(Tongji University)pursuant to License Agreement.No further reproductions authorized.B280-2010.Performance RequirementsTABLE 6 Interior Surface Residue Limits of Straight Lengths10.1 Expansion Test:ResidueAWall10.1.1 Tube furnished
48、in the 060 soft annealed or 062StandardLimit per 20Thickness,Size.in.t(6.10m)heavy anneal temper shall be capable of being expanded inin.(mm)1t(0.305m)20t(6.10m)Lengtn,gaccordance with Test Method B153 to the following extent:0.0250.635)0.05240.00486)1.04(0.0970.003710.1.1.1 The expanded tube shall
49、show no cracking or other0.0300.76210.08240.007651.650.1530.0058defects visible to the unaided eye.0.035(0.8890.1126(0.0105)2.25(0.2100.00790.0401.020.14270.01332.850.2660.010010.1.2 Unless specified in the contract or purchase order.0.04211070.17440.016213.4903240.0122this test is not required to b
50、e performed by the manufacturer.0.045(1.140.2055(0.0191)4.11(0.3820.0144110.050(127)0.2683(0.0249)5.37(0.498)0.018810.2 Cleanness of Interior Surface:1300551400.3312(0.0308)6.62(0.6160.023210.2.1 When specified in the contract or purchase order,this1%0.060(1.520.39400.036617.880.7320.027620.0701.780
51、.51970.0423110.390.846)0.0364test shall be performed by the manufacturer.2%0.0802.030.6453(0.059912.91(1.1200.045310.2.2 After evaporation of the cleaning solvent,the residue3角0.0902290.77100.071615.4211.430.0540weight shall not exceed 0.0035 g/ft(0.038 gm)of the3540.10025410.89660.08331179311670.06
52、284%0.110(2.79)1.0220(0.0949)20.44(1.900.0717interior surface.The maximum amount of residue in grams pertube shall not exceed the limits specified in Table 5 and TableResidue limit 0.0035 g/ft2(0.038 g/m2)inside area.6.10.3 Microscopical Examination for Susceptibility to Hy-drogen Embrittlement:conf
53、orm to the requirements of this test.Testing shall be in10.3.1 Tubes furnished in Copper UNS No.C10200 andaccordance with Practice E243.C12000 shall be essentially free of cuprous oxide as deter-mined by Procedure A of Test Methods B577.When Copper11.1.3 Testing of coiled lengths shall be subject to
54、 negotia-tion between the manufacturer and the purchaser.UNS No.C12200 is supplied,examination is not required.In11.1.4 For tubes too large for the testing unit,the testcase of a dispute,Procedure C of Test Methods B577 shall bemethod to be used shall be by agreement between the manu-used as the ref
55、eree method.facturer and the purchaser.10.3.2 Tubes furnished in all coppers shall be capable ofpassing the embrittlement test specified in Procedure B of Test12.Purchases for Agencies of the U.S.GovernmentMethods B577.The actual performance of the test is notrequired unless specifically requested i
56、n the ordering docu-12.1 When specified in the contract or purchase order.ment.In case of a dispute,Procedure C of Test Methods B577product purchased for agencies of the U.S.Government shallshall be used as the referee method.conform to the requirements stipulated in the SupplementaryRequirements.11
57、.Nondestructive Testing13.Dimensions,Mass,and Permissible Variations11.1 Electromagnetic(Eddy-Current)Examination:13.1 The standard dimensions and weights per foot for the11.1.1 Each straight length of tube up to and including3%in.(79.4 mm)in outside diameter,shall be subjected tovarious nominal siz
58、es are given in Table I and Table 2.examination.13.2 Wall Thickness and Diameter-The tolerances for wall11.1.2 Tubes that do not actuate the signaling device on thethickness and diameter shall conform to the requirementstesting unit,after having been adjusted to provide informationspecified in Table
59、 2 and Table 1.on the suitability of the tube for the intended application,shall13.3 Lengths and Tolerances:13.3.1 Standard Lengths and Tolerances-The standardlength for coils shall be 50 ft(15.2 m).The length tolerancesTABLE 5 Interior Surface Residue Limits of Soft Coiled Lengthsfor 50 ft coils sh
60、all be+12 in.(305 mm)and-0 in.Thestandard length for straight lengths shall be 20 ft(6.1 m).TheWallInternal Area per Length of Tube.ResidueAStandardThickness,ft2(m2)2length tolerances for 20 ft lengths shall be+1 in.(25 mm)andSize,in.in.(mm)1t(0.305m50 ft(15.2 m)m)Coil,g-0in.0.0300.762)0.0171(0.0015
61、9)0.850.0795)0.003013.3.2 Tubes supplied in other than standard lengths and160.0300.76210.03330.003091.67(0.155)0.0058tolerances shall be in accordance with requirements established40.030(0.762)0.0498(0.004672.49(0.234)0.0087by agreement between the manufacturer or supplier and the40.0320.8130.06050
62、.006043.2510.30210.0114%0.0320.81310.08150.007574.0803790.0143purchaser.0.032(0.8130.1142(0.01065.71(0.5300.020013.4 Roundness-For drawn unannealed tube in straight0.0350.88910.14530.01357.26(0.675)0.02540.03510.89910.1780(0.0165)8.9008270.0312lengths,the roundness tolerance as specified in Table 7.
63、The0.045(1.140.2055(0.0191)10.28(0.955)0.0360deviation from roundness is measured as the difference be-10.05011.270.2683(0.0249)13.421.2410.04701%0.055(1.40j0.3312(0.0308)16.56(1.540.0580tween major and minor diameters as determined at any one1%0.0601.520.39400.0366】19.701.8310.0690cross section of
64、the tube.Roundness tolerance has not beenResidue limit 0.0035 g/ft2(0.038 g/m2)inside area.established for annealed tube in straight lengths nor for tubesfurnished in coils.Copyright by ASTM Intl(all rights reserved);Sat Apr 11 06:37:49 EDT 2020Downloaded/printed byTongji University(Tongji Universit
65、y)pursuant to License Agreement.No further reproductions authorized.B280-20TABLE 7 Roundness Tolerance15.2.3 The number of samples taken during the course ofNorE 1-Applicable to drawn unannealed straight length tube only.manufacture shall be as follows:Roundness Tolerance Percent15.2.3.1 When sample
66、s are taken at the time the castings areD(Ratio of Wall Thickness toof Nominal Outside Diametepoured,at least one sample shall be taken for each group ofNominal Outside Diameter)(Expressed to Nearest0.001in.or0.010mmcastings poured simultaneously from the same source of0.01to0.03,incl1.5molten metal
67、.Over 0.03 to 0.05,incl1.015.2.3.2 When samples are taken from the semifinishedOver 0.05 to 0.10,incl0.8product,a sample shall be taken to represent each 10 000 Ib(4500 kg)or fraction thereof,except that not more than onesample per piece shall be required.13.5 Squareness of Cut-For tube in straight
68、lengths,the15.3 Other Tests-Specimens for all other tests shall bedeparture from squareness of the end of any tube shall nottaken from two of the sample pieces selected in 15.1.2.In theexceed more than 0.010 in.(0.25 mm)for tube up to andevent only one sample piece is selected,all specimens shall be
69、including 58 in.(15.9 mm)standard size;and not more thantaken from that piece.0.016 in./in.(0.016 mm/mm)of outside diameter,for tubelarger than in.standard size.16.Number of Tests and Retests13.6 For the purpose of determining conformance with the16.1 Tests:dimensional requirements prescribed in thi
70、s specification,anymeasured value outside the specified limiting values for any16.1.1 Chemical composition shall be reported as the aver-dimension shall be subject to rejection.age of results from at least two replicate determinations foreach specified element and each determination must meet14.Work
71、manship,Finish,and Appearancespecification requirement.14.1 The product shall be free of defects,but blemishes of16.1.2 Tensile and grain size shall be reported as the averageof results from the specimens tested and all specimens musta nature that do not interfere with the intended application areac
72、ceptable.conform to specification requirements.16.1.3 Specimens for all other tests must meet specification15.Samplingrequirements.15.1 The lot size,portion size,and selection of sample16.2 Retest:pieces shall be as follows:16.2.1 When test results obtained by the purchaser fail to15.1.1 Lot Size-Th
73、e lot size shall be 10 000 Ib(4500 kg)orconform with the product specification requirement(s),thefraction thereof.manufacturer or supplier shall have the option to perform a15.1.2 Portion Size-Sample pieces shall be selected to beretest.representative of the lot as shown in Table 8.16.2.2 Retesting
74、shall be as directed in the product specifi-15.1.2.1 In the case of tube furnished in coils,a lengthcation for the initial test except for the number of testsufficient for all necessary tests shall be cut from each coilspecimens which shall be twice that normally required for theselected for purpose
75、 of test.The remaining portion of thesetest.Test results for all specimens shall conform to the productcoils shall be included in the shipment,and the permissiblespecification requirement(s)in retest and failure to complyvariations in length on such coils shall be waived.shall be cause for lot rejec
76、tion.15.2 Chemical Composition:15.2.1 The sample shall be taken in approximately equal17.Specimen Preparationweight from each piece selected in 15.1.2 and prepared in17.1 Chemical Analysis-Preparation of the analyticalaccordance with Practice E255.The minimum weight of thespecimens for the determina
77、tion of chemical composition shallcomposite sample shall be 150 g.be the responsibility of the reporting laboratory.15.2.2 Instead of sampling in accordance with PracticeE255,the manufacturer shall have the option of sampling at the17.2 Grain Size and Microscopical Examination:time castings are pour
78、ed or from the semifinished product.17.2.1 The specimen(s)shall be prepared in accordanceWhen the composition is determined during the course ofwith Guide E3.manufacture,sampling of the finished product is not required.17.2.2 The surface of the specimen shall approximate aradial longitudinal section
79、 of the tube.TABLE 8 Sampling Schedule17.3 Tensile-Tensile test specimens shall be of the fullsection of the tube and shall conform with the requirements ofNorE 1-Each sample piece shall be taken from a separate tube.the Test Specimen section of Test Methods E8/E8M,unless theNumber of Pieces in LotN
80、umber of Sample Pieces to be Takenlimitation of the testing machine precludes the use of such1to5051t02002specimen in which case test specimen conforming to Type No.201to15001 of Fig.13 in Test Methods E8/E8M shall be used.0ver15000.2%of total number of pieces in the lot,but notto exceed 10 pieces17.4 Electromagnetic(Eddy-Current)Test-Tubes for thistest require no special preparation.Copyright by ASTM Intl(all rights reserved);Sat Apr 11 06:37:49 EDT 2020Downloaded/printed byTongji University(Tongji University)pursuant to License Agreement.No further reproductions authorized.
