1、Designation: B280 18Standard 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 revision, the ye
2、ar of last revision. 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 establ
3、ishes the requirements for seam-less copper tube intended for use in the connection, repairs, oralternations of air conditioning or refrigeration units in thefield.NOTE 1Fittings used for soldered or brazed connections in airconditioning and refrigeration systems are described in ASME StandardB16.22
4、.NOTE 2The assembly of copper tubular systems by soldering isdescribed in Practice B828.NOTE 3Solders for joining copper tubular systems are described inSpecification B32. The requirements for acceptable fluxes for thesesystems are described in Specification B813.1.2 The tube shall be produced from
5、the following coppers,and the manufacturer has the option to supply any one of them,unless otherwise specified:CopperUNS No.Previously UsedDesignationDescriptionC10200 OF Oxygen free withoutresidual deoxidantsC12000 DLP Phosphorus deoxidized,low residual phosphorusC12200 DHP Phosphorus deoxidized,hi
6、gh residual phosphorus1.3 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 The following hazard statement pertains only to the testmet
7、hod described in 18.2.4 of 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 user of thisstandard to establish appropriate safety, health, and environ-mental practices and determine the applicabili
8、ty of regulatorylimitations prior to use.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the Worl
9、d Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2B32 Specification for Solder MetalB153 Test Method for Expansion (Pin Test) of Copper andCopper-Alloy Pipe and TubingB577 Test Methods for Detection of Cuprous Oxide (Hydro-gen Embrittlement Su
10、sceptibility) in CopperB601 Classification for Temper Designations for Copper andCopper AlloysWrought 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 Fitting
11、sB900 Practice for Packaging of Copper and Copper AlloyMill Products for U.S. Government AgenciesE3 Guide for Preparation of Metallographic SpecimensE8/E8M Test Methods for Tension Testing of Metallic Ma-terialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Speci
12、ficationsE53 Test Method for Determination of Copper in UnalloyedCopper by GravimetryE62 Test Methods for Chemical Analysis of Copper andCopperAlloys (Photometric Methods) (Withdrawn 2010)3E112 Test Methods for Determining Average Grain SizeE243 Practice for Electromagnetic (Eddy Current) Examina-ti
13、on of Copper and Copper-Alloy Tubes1This 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 1953. Last prev
14、ious edition approved in 2016 as B280 16. DOI:10.1520/B0280-18.2For 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 websit
15、e.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 StatesThis international standard was deve
16、loped 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 (TBT) Committee.1E255 Practice for
17、Sampling Copper and Copper Alloys forthe Determination of Chemical Composition2.2 ASME Standard:4B1622 Wrought Copper and Copper Alloy Solder JointPressure Fittings3. Terminology3.1 Definitions:3.1.1 average diameter (for round tubes only), nthe aver-age of the maximum and minimum outside diameters,
18、 ormaximum and minimum inside diameters, whichever isapplicable, as determined at any one cross section of the tube.3.1.2 bright anneal, na thermal treatment carried out in acontrolled atmosphere so that surface oxidation is reduced to aminimum and the surface remains relatively bright.3.1.3 coil, n
19、a length of the product wound into a series ofconnected turns. The unqualified term “coil” as applied to tubeusually refers to a bunched coil.3.1.3.1 bunched, na coil in which the turns are bunchedand held together such that the cross section of the bunchedturns is approximately circular.3.1.3.2 lev
20、el or traverse wound, na coil in which the turnsare wound into layers parallel to the axis of the coil such thatsuccessive turns in a given layer are next to one another.(Sometimes called “helical coil.”)3.1.3.3 single layer flat, na coil in which the product isspirally wound into a single disc-like
21、 layer. (Sometimes called“pancake coil” or “single layer spirally wound coil.”)3.1.3.4 double layer flat, na coil in which the product isspirally wound into two connected disc-like layers such thatone layer is on top of the other. (Sometimes called “doublelayer pancake coil” or “double layer spirall
22、y wound coil.”)3.1.4 lengths, nstraight pieces of the product.3.1.4.1 specific, nstraight lengths that are uniform inlength, as specified, and subject to established length toler-ances.3.1.4.2 standard, nuniform lengths recommended in aSimplified Practice Recommendation or established as a Com-merci
23、al Standard.3.1.5 tube, seamless, na tube produced with a continuousperiphery in all stages of the operations.3.1.5.1 tube, air conditioning, na seamless copper tubeconforming to a standard series of sizes (Table 1) and tospecified internal cleanness requirements, normally furnishedin drawn temper s
24、traight lengths with the ends capped orsealed.3.1.5.2 tube, refrigeration service, na seamless coppertube conforming to a standard series of sizes (Table 2) and tospecial internal cleanliness and dehydration requirements,normally furnished in soft temper coils and with ends cappedor sealed.3.2 Defin
25、itions of Terms Specific to This Standard:3.2.1 capable ofthe test need not be performed by theproducer of the material. However, if subsequent testing by thepurchaser establishes that the material does not meet theserequirements, the material shall be subject to rejection.4. Ordering Information4.1
26、 Include this information for contracts or purchase ordersfor products furnished to this specification:4.1.1 ASTM designation and year of issue (for example,B280 03),4.1.2 Copper UNS No. (not necessary unless a specificcopper is desired),4.1.3 Dimensions; wall thickness, diameter, and so forth(Secti
27、on 13),4.1.4 How furnished: coils or straight lengths,4.1.5 Temper (for example, O60 or H58),4.1.6 Size (Tables 1 and 2),4.1.7 Length (Section 13),4Available from American Society of Mechanical Engineers (ASME), ASMEInternational Headquarters, Two Park Ave., New York, NY 10016-5990, http:/www.asme.o
28、rg.TABLE 1 Standard Dimensions and Weights, and Tolerances in Diameter and Wall Thickness for Straight LengthsNOTE 1Applicable to drawn temper tube only.Standard Size, in. Outside Diameter, in. (mm) Wall Thickness, in. (mm) Weight, lb/ft (kg/m)TolerancesAverageAOutsideDiameter, Plus and Minus,in. (m
29、m)WallBThickness, Plus andMinus, in. (mm)14 0.250 (6.35) 0.025 (0.635) 0.068 (0.102) 0.001 (0.025) 0.0025 (0.06)38 0.375 (9.52) 0.030 (0.762) 0.126 (0.187) 0.001 (0.025) 0.003 (0.08)12 0.500 (12.7) 0.035 (0.889) 0.198 (0.295) 0.001 (0.025) 0.004 (0.10)58 0.625 (15.9) 0.040 (1.02) 0.285 (0.424) 0.001
30、 (0.025) 0.004 (0.10)34 0.750 (19.1) 0.042 (1.07) 0.362 (0.539) 0.001 (0.025) 0.004 (0.10)78 0.875 (22.3) 0.045 (1.14) 0.455 (0.677) 0.001 (0.025) 0.004 (0.10)118 1.125 (28.6) 0.050 (1.27) 0.655 (0.975) 0.0015 (0.038) 0.004 (0.10)138 1.375 (34.9) 0.055 (1.40) 0.884 (1.32) 0.0015 (0.038) 0.006 (0.15)
31、158 1.625 (41.3) 0.060 (1.52) 1.14 (1.70) 0.002 (0.051) 0.006 (0.15)218 2.125 (54.0) 0.070 (1.78) 1.75 (2.60) 0.002 (0.051) 0.007 (0.18)258 2.625 (66.7) 0.080 (2.03) 2.48 (3.69) 0.002 (0.051) 0.008 (0.20)318 3.125 (79.4) 0.090 (2.29) 3.33 (4.96) 0.002 (0.051) 0.009 (0.23)358 3.625 (92.1) 0.100 (2.54
32、) 4.29 (6.38) 0.002 (0.051) 0.010 (0.25)418 4.125 (105) 0.110 (2.79) 5.38 (8.01) 0.002 (0.051) 0.011 (0.28)AThe 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.BThe tolerances listed represent the maxim
33、um deviation at any point.B280 1824.1.8 Quantity (total pieces of each size and type),4.1.9 When product purchased for agencies of the U.S.Government (Section 12).4.2 The following options are available and shall be speci-fied in the contract or purchase order when required:4.2.1 Tensile test (Secti
34、on 9),4.2.2 Expansion test (Section 10.1),4.2.3 Cleanness test (Sections 10.2 and 18.2.4),4.2.4 Microscopical Examination for HydrogenEmbrittlement, Procedure B (10.3.2),4.2.5 Certification (Section 22), and4.2.6 Test report (Section 23).5. Materials and Manufacture5.1 MaterialsThe material of manuf
35、acture shall be billets,bars, or tube and shall be of such soundness as to be suitablefor processing into the tubular products described.5.2 Manufacture:5.2.1 The tube shall be manufactured by such hot or coldworking processes as to produce a homogeneous uniformwrought structure in the finished prod
36、uct. The tube shall becold drawn to the finished size and wall thickness.5.2.2 Coiled lengths specified O60, soft annealed temper,shall be bright annealed after coiling, then dehydrated, andcapped, plugged, crimped, or otherwise closed at both ends soas to maintain the internal cleanness of the tubi
37、ng under normalconditions of handling and storage.5.2.3 Straight lengths specified H58 drawn general purposeshall be cleaned and capped, plugged, or otherwise closed atboth ends so as to maintain the internal cleanness of the tubingunder normal conditions of handling and storage.6. Chemical Composit
38、ion6.1 The chemical composition shall conform to the chemi-cal requirements in Table 3 for the specific type of copper.6.1.1 These limits do not preclude the presence of otherelements. When included in the contract or purchase order, andagreed upon by the manufacturer or supplier and the purchaser,l
39、imits shall be established and analysis required for unnamedelements.7. Temper7.1 Product under this specification shall be furnished ineither O60 (soft annealed) or H58 (drawn general purpose)temper, as specified in the contract or purchase order anddefined in Classification B601.7.1.1 Coils are no
40、rmally furnished in O60 temper andstraight lengths in H58 temper.8. Grain Size8.1 Coiled lengths shall be furnished in the O60 temper andshall have a recrystallized grain size of 0.040 mm minimumwhen determined in accordance with Test Methods E112.9. Tensile Requirements9.1 The tube shall conform to
41、 the tensile requirementsprescribed in Table 4.9.2 Tensile tests need not be performed except when speci-fied in the contract or purchase order.10. Performance Requirements10.1 Expansion Test:TABLE 2 Standard Dimensions and Weights, and Tolerances in Diameter and Wall Thickness for Coil LengthsStand
42、ard Size, in. Outside Diameter, in. (mm) Wall Thickness, in. (mm) Weight, lb/ft (kg/m)TolerancesAverageAOutsideDiameter, Plus and Minus,in. (mm)WallBThickness, Plusand Minus, in. (mm)18 0.125 (3.18) 0.030 (0.762) 0.0347 (0.0516) 0.002 (0.051) 0.003 (0.08)316 0.187 (4.75) 0.030 (0.762) 0.0575 (0.0856
43、) 0.002 (0.051) 0.003 (0.08)14 0.250 (6.35) 0.030 (0.762) 0.0804 (0.120) 0.002 (0.051) 0.003 (0.08)516 0.312 (7.92) 0.032 (0.813) 0.109 (0.162) 0.002 (0.051) 0.003 (0.08)38 0.375 (9.52) 0.032 (0.813) 0.134 (0.199) 0.002 (0.051) 0.003 (0.08)12 0.500 (12.7) 0.032 (0.813) 0.182 (0.271) 0.002 (0.051) 0.
44、003 (0.08)58 0.625 (15.9) 0.035 (0.889) 0.251 (0.373) 0.002 (0.051) 0.004 (0.11)34 0.750 (19.1) 0.035 (0.889) 0.305 (0.454) 0.0025 (0.064) 0.004 (0.11)78 0.875 (22.3) 0.045 (1.14) 0.455 (0.677) 0.003 (0.076) 0.004 (0.11)118 1.125 (28.6) 0.050 (1.27) 0.655 (0.975) 0.0035 (0.089) 0.005 (0.13)138 1.375
45、 (34.9) 0.055 (1.40) 0.884 (1.32) 0.004 (0.10) 0.006 (0.15)158 1.625 (41.3) 0.060 (1.52) 1.14 (1.70) 0.0045 (0.11) 0.006 (0.15)AThe 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.BThe tolerances listed
46、 represent the maximum deviation at any point.TABLE 3 Chemical CompositionWeight %ElementCopper UNS No.C10200AC12000 C12200Copper,Bmin 99.95 99.90 99.9Phosphorus . . . 0.0040.012 0.0150.040AOxygen shall be 10 ppm max.BCopper + silver.TABLE 4 Tensile RequirementsFormTemper DesignationTensile Strength
47、,minElongation in2 in. (50.8mm),min,%Standard Former ksiAMPaBCoiled lengths O60 soft annealed 30 205 40Straight lengths H58 drawn generalpurpose36 250 . . .Aksi = 1000 psi.BSee Appendix X1.B280 18310.1.1 Tube furnished in the O60 soft annealed temper shallbe capable of being expanded in accordance w
48、ith Test MethodB153 to the following extent:10.1.1.1 The expanded tube shall show no cracking or otherdefects visible to the unaided eye.10.1.2 Unless specified in the contract or purchase order,this test is not required to be performed by the manufacturer.10.2 Cleanness of Interior Surface:10.2.1 W
49、hen specified in the contract or purchase order, thistest shall be performed by the manufacturer.10.2.2 After evaporation of the cleaning solvent, the residueweight shall not exceed 0.0035 g/ft2(0.038 g m2)oftheinterior surface. The maximum amount of residue in grams pertube shall not exceed the limits specified in Table 5 and Table6.10.3 Microscopical Examination for Susceptibility to Hy-drogen Embrittlement:10.3.1 Tubes furnished in Copper UNS No. C10200 andC12000 shall be essentially free of cuprous oxide as deter-mined by Pr
