1、Designation: B 280 08Standard Specification forSeamless Copper Tube for Air Conditioning andRefrigeration Field Service1This standard is issued under the fixed designation B 280; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the
2、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 Department of Defense.1. Scope*1.1 This specification establis
3、hes 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.N
4、OTE 2The assembly of copper tubular systems by soldering isdescribed in Practice B 828.NOTE 3Solders for joining copper tubular systems are described inSpecification B32. The requirements for acceptable fluxes for thesesystems are described in Specification B 813.1.2 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 Section 18.2.4 of this specification: Thisstandard does not purport to address all of the safety concerns,if any, associated with its use. It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regu
8、latory limita-tions prior to use.2. Referenced Documents2.1 ASTM Standards:2B32 Specification for Solder MetalB 153 Test Method for Expansion (Pin Test) of Copper andCopper-Alloy Pipe and TubingB 577 Test Methods for Detection of Cuprous Oxide (Hy-drogen Embrittlement Susceptibility) in CopperB 601
9、Classification for Temper Designations for Copperand Copper AlloysWrought and CastB 813 Specification for Liquid and Paste Fluxes for Solder-ing of Copper and Copper Alloy TubeB 828 Practice for Making Capillary Joints by Soldering ofCopper and Copper Alloy Tube and FittingsB 900 Practice for Packag
10、ing of Copper and Copper AlloyMill Products for U.S. Government AgenciesE3 Guide for Preparation of Metallographic SpecimensE8 Test Methods for Tension Testing of Metallic MaterialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE53 Test Method for D
11、etermination of Copper in Unal-loyed Copper by GravimetryE62 Test Methods for Chemical Analysis of Copper andCopper Alloys (Photometric Methods)E112 Test Methods for Determining Average Grain SizeE 243 Practice for Electromagnetic (Eddy-Current) Exami-nation of Copper and Copper-Alloy TubesE 255 Pra
12、ctice for Sampling Copper and Copper Alloys forthe Determination of Chemical CompositionE 527 Practice for Numbering Metals and Alloys in theUnified Numbering System (UNS)2.2 ASME Standards:3B1622 Wrought Copper and Copper Alloy Solder JointPressure Fittings1This specification is under the jurisdict
13、ion of ASTM CommitteeB05 on Copperand Copper Alloys and is the direct responsibility of Subcommittee B05.04 on Pipeand Tube.Current edition approved April 15, 2008. Published May 2005. Originallyapproved in 1953. Last previous edition approved in 2003 as B 280 03.2For referenced ASTM standards, visi
14、t 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.3Available from American Society of Mechanical Engineers (ASME), ASMEInternational Headquarters,
15、Three Park Ave., New York, NY 10016-5990, http:/www.asme.org.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3. Terminology3.1 Definitions:3.1.1 average diameter (for
16、round tubes only), ntheaverage of the maximum and minimum outside diameters, ormaximum and minimum inside diameters, whichever is appli-cable, 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
17、is reduced to aminimum and the surface remains relatively bright.3.1.3 coil, na 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 th
18、at the cross section of the bunchedturns is approximately circular.3.1.3.2 level 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 lay
19、er flat, na coil in which the product isspirally wound into a single disc-like 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 th
20、e other. (Sometimes called “doublelayer pancake coil” or “double layer spirally 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 re
21、commended in aSimplified Practice Recommendation or established as a Com-mercial 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 to
22、specified internal cleanness requirements, normally furnishedin drawn temper straight 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,n
23、ormally furnished in soft temper coils and with ends cappedor sealed.3.2 Definitions 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 theserequi
24、rements, the material shall be subject to rejection.4. Ordering Information4.1 Include this information for contracts or purchase ordersfor products furnished to this specification:4.1.1 ASTM designation and year of issue (for example,B 280 03),4.1.2 Copper UNS No. (not necessary unless a specificco
25、pper is desired),4.1.3 Dimensions; wall thickness, diameter, and so forth(Section 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),4.1.8 Quantity (total pieces of each size and type),4.1.9 When product pur
26、chased 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 Expansion test (Section 10.1),4.2.2 Cleanness test (Sections 10.2 and 18.2.4),4.2.3 Microscopical Examination for Hydrogen Embr
27、ittle-ment, Procedure B (10.3.2),4.2.4 Certification (Section 22), and4.2.5 Test report (Section 23).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) Wal
28、l Thickness, in. (mm) Weight, lb/ft (kg/m)TolerancesAverageAOutside Diam-eter, Plus and Minus, in.(mm)WallBThickness, Plus andMinus, in. (mm)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 (0.09)58 0.625 (15.9) 0.0
29、40 (1.02) 0.285 (0.424) 0.001 (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 (0.11)78 0.875 (22.3) 0.045 (1.14) 0.455 (0.677) 0.001 (0.025) 0.004 (0.11)118 1.125 (28.6) 0.050 (1.27) 0.655 (0.975) 0.0015 (0.038) 0.004 (0.13)138 1.375 (34.9) 0.055 (1.40) 0.884 (1.32
30、) 0.0015 (0.038) 0.006 (0.14)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
31、)358 3.625 (92.1) 0.100 (2.54) 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 toleranc
32、es listed represent the maximum deviation at any point.B2800825. Materials and Manufacture5.1 MaterialsThe material of manufacture 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
33、 manufactured by such hot or coldworking processes as to produce a homogeneous uniformwrought structure in the finished product. 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 d
34、ehydrated, andcapped, plugged, crimped, or otherwise closed at both ends soas to maintain the internal cleanness of the tubing under normalconditions of handling and storage.5.2.3 Straight lengths specified H58 hard-drawn tempershall be cleaned and capped, plugged, or otherwise closed atboth ends so
35、 as to maintain the internal cleanness of the tubingunder normal conditions of handling and storage.6. Chemical Composition6.1 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 othereleme
36、nts. When included in the contract or purchase order, andagreed upon by the manufacturer or supplier and the purchaser,limits 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 gen
37、eral purpose)temper, as specified in the contract or purchase order anddefined in Classification B 601.7.1.1 Coils are normally 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
38、0.040 mm minimumwhen determined in accordance with Test Methods E112.9. Tensile Requirements9.1 The tube shall conform to the tensile requirementsprescribed in Table 4.10. Performance Requirements10.1 Expansion Test:10.1.1 Tube furnished in the O60 soft annealed temper shallbe capable of being expan
39、ded in accordance with Test MethodB 153 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 Inter
40、ior Surface:10.2.1 When 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 shal
41、l not exceed the limits specified in Table 5 and Table6.10.3 Microscopical Examination for Susceptibility to Hy-drogen Embrittlement:TABLE 2 Standard Dimensions and Weights, and Tolerances in Diameter and Wall Thickness for Coil LengthsStandard Size, in. Outside Diameter, in. (mm) Wall Thickness, in
42、. (mm) Weight, lb/ft (kg/m)TolerancesAverageAOutsideDiameter, Plus and Minus,in. (mm)WallBThickness, Plus andMinus, 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) 0.002 (0.051) 0.003 (0.08)14 0.250 (6.35) 0.030 (0.762) 0
43、.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) 0.003 (0.08)58 0.625 (15.9) 0.035 (0.889) 0.251 (0.373) 0.002
44、 (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 (34.9) 0.055 (1.40) 0.884 (1.32) 0.004 (0.10) 0.006 (0.15)
45、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 represent the maximum deviation at any point.TABLE 3 Chemi
46、cal CompositionWeight %Element Copper 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,minElongation in2 in. (50.8mm),min,%Standard Former ksiAM
47、PaBCoiled lengths O60 soft annealed 30 205 40Straight lengths H58 drawn generalpurpose36 250 . . .Aksi = 1000 psi.BSee Appendix X1.B28008310.3.1 Tubes furnished in Copper UNS No. C10200 andC12000 shall be essentially free of cuprous oxide as deter-mined by Procedure A of Test Methods B 577. When Cop
48、perUNS No. C12200 is supplied, examination is not required. Incase of a dispute, Procedure C of Test Methods B 577 shall beused as the referee method.10.3.2 Tubes furnished in all coppers shall be capable ofpassing the embrittlement test specified in Procedure B of TestMethods B 577. The actual perf
49、ormance of the test is notrequired unless specifically requested in the ordering docu-ment. In case of a dispute, Procedure C of Test Methods B 577shall be used as the referee method.11. Nondestructive Testing11.1 Electromagnetic (Eddy-Current) Examination:11.1.1 Each straight length of tube up to and including 318in. (79.4 mm) in outside diameter, shall be subjected toexamination.11.1.2 Tubes that do not actuate the signaling device on thetesting unit, after having been adjusted to provide informationon the suitability of the tube
