1、Designation: B 234M 04METRICStandard Specification forAluminum and Aluminum-Alloy Drawn Seamless Tubes forCondensers and Heat Exchangers Metric1This standard is issued under the fixed designation B 234M; the number immediately following the designation indicates the year oforiginal adoption or, in t
2、he case of revision, 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.1. Scope*1.1 This specification covers aluminum-alloy (Note 1)drawn seamless round tube in strai
3、ght lengths designated asshown in the Table 2, for use in surface condensers, evapora-tors, and heat exchangers.NOTE 1Throughout this specification use of the term alloy in thegeneral sense includes aluminum as well as aluminum alloy.NOTE 2For drawn seamless tubes used in general applications, seeSp
4、ecification B 210M; for extruded tubes see Specification B 221M; forseamless pipe see Specification B 241/B 241M; and for structural pipe andtube see Specification B 429.NOTE 3This specification is the metric counterpart of SpecificationB 234.1.2 Alloy and temper designations are in accordance withA
5、NSI H35.1M. The equivalent Unified Numbering Systemalloy designations are those of Table 1 preceded by , forexample, A91060 for aluminum 1060, in accordance withPractice E 527.1.3 For acceptance criteria for inclusion of new aluminumand aluminum alloys in this specification, see Annex A2.1.4 This st
6、andard does not purport to address all of thesafety concerns, if any, associated 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
7、 The following documents of the issue in effect on dateof material purchase form a part of this specification to theextent referenced herein:2.2 ASTM Standards:2B 210M Specification for Aluminum and Aluminum-AlloyDrawn Seamless Tubes MetricB 221M Specification for Aluminum and Aluminum-AlloyExtruded
8、 Bars, Rods, Wire, Profiles and Tubes MetricB 241/B 241M Specification forAluminum andAluminum-Alloy Seamless Pipe and Seamless Extruded TubeB 429 Specification for Aluminum-Alloy Extruded Struc-tural Pipe and TubeB 557M Test Methods of Tension Testing Wrought and CastAluminum- and Magnesium-Alloy P
9、roducts MetricB 660 Practices for Packaging/Packing of Aluminum andMagnesium ProductsB 666M Practice for Identification Marking of Aluminumand Magnesium Products MetricB 881 Terminology Relating to Aluminum- andMagnesium-Alloy ProductsB 918 Practice for Heat Treatment of Wrought AluminumAlloysE29 Pr
10、actice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationE34 Test Methods for ChemicalAnalysis ofAluminum andAluminum-Base AlloysE55 Practice for Sampling Wrought Nonferrous Metals andAlloys for Determination of Chemical CompositionE 215 Practice for Standardizing E
11、quipment for Electro-magnetic Examination of Seamless Aluminum-Alloy TubeE 527 Practice for Numbering Metals and Alloys (UNS)E 607 Test Method for Optical Emission SpectrometricAnalysis of Aluminum and Aluminum Alloys by thePoint-to-Plane Technique, Nitrogen AtmosphereE 716 Practices for Sampling Al
12、uminum and AluminumAlloys for Spectrochemical AnalysisE 1251 Test Method for Optical Emission SpectrometricAnalysis ofAluminum andAluminumAlloys by theArgonAtmosphere, Point-to-Plane, Unipolar Self-Initiating Ca-pacitor Discharge2.3 ANSI Standards:3H35.1(M) Alloy and Temper Designation Systems for A
13、lu-minum1This specification is under the jurisdiction of ASTM Committee B07 on LightMetals and Alloys and is the direct responsibility of Subcommittee B07.03 onAluminum-Alloy Wrought Products.Current edition approved Dec. 1, 2004. Published December 2004. Originallyapproved in 1982. Last previous ed
14、ition approved in 2002 as B 234M 02.2For 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.3Available from American
15、National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036.1*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.H35.2(M) Dimensional Tolerances for A
16、luminum MillProducts2.4 Federal Standard:4Fed. Std. No. 123 Marking for Shipment (Civil Agencies)2.5 Military Standard:4MIL-STD-129 Marking for Shipment and Storage2.6 AMS Specification:5AMS 2772 Heat Treatment of Aluminum Alloy Raw Mate-rials3. Terminology3.1 Definitions: Refer to Terminology B 881
17、 for defintiionsof product terms used in this specification.3.2 Definitions of Terms Specific to This Standard:3.2.1 capable ofthe term capable of as used in thisspecification means that the test need not be performed by theproducer of the material. However, should testing by thepurchaser establish
18、that the material does not meet theserequirements, the material shall be subject to rejection.4Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700Robbins Ave., Philadelphia, PA 19111-5098.5Available from Society of Automotive Engineers (SAE), 400 CommonwealthDr., Warrendale,
19、PA 15096-0001.TABLE 1 Chemical Composition LimitsA,B,CAlloy Silicon Iron Copper Manganese Magnesium Chromium Zinc TitaniumOther ElementsDAluminum,minEach TotalE106030030.250.60.350.70.050.050.200.031.01.50.03.0.050.100.03.0.03F0.05.0.1599.60GremainderAlclad 3003 3003 alloy clad with 7072 alloy5052 0
20、.25 0.40 0.10 0.10 2.22.8 0.150.35 0.10 . 0.05 0.15 remainder5454 0.25 0.40 0.10 0.501.0 2.43.0 0.050.20 0.25 0.20 0.05 0.15 remainder6061 0.400.8 0.7 0.150.40 0.15 0.81.2 0.040.35 0.25 0.15 0.05 0.15 remainder7072H0.07 Si + Fe 0.10 0.10 0.10 . 0.81.3 . 0.05 0.15 remainderALimits are in percent maxi
21、mum unless shown as a range or otherwise stated.BAnalysis shall be made for the elements for which limits are shown in this table.CFor purposes of determining conformance to these limits, an observed value or a calculated value attained from analysis shall be rounded to the nearest unit in thelast r
22、ight-hand place of figures used in expressing the specified limit, in accordance with the rounding-off method of Practice E29.DOthers includes listed elements for which no specific limit is shown as well as unlisted metallic elements. The producer may analyze samples for trace elements notspecified
23、in this specification. However, such analysis is not required and may not cover all metallic Others elements. Should any analysis by the producer or the purchaserestablish that an Others element exceeds the limit of Each or that the aggregate of several Others elements exceeds the limit of Total, th
24、e material shall be considerednonconforming.EOther ElementsTotal shall be the sum of unspecified metallic elements 0.010 % or more, rounded to the second decimal before determining the sum.FVanadium 0.05 max.GThe aluminum content shall be calculated by subtracting from 100.00 % the sum of all the me
25、tallic elements present in amounts of 0.010 % or more, rounded to thesecond decimal before determining the sum.HComposition of cladding alloy as applied during the course of manufacture. The sample from finished tube shall not be required to conform to these limits.TABLE 2 Tensile Property LimitsA,B
26、Alloy TemperWall Thickness, mmTensile Strength,min, MPaYield Strength,(0.2 % offset), min,MPaElongation in50 mm min, %Over ThroughFull-SectionSpecimenCut-OutSpecimen1060 H14 0.25 5.00 85 70 . .3003 H14 0.25 0.63 140 115 3 .0.63 1.20 140 115 5 31.20 5.00 140 115 8 4H25 0.25 5.00 150 130 . .Alclad 300
27、3 H14 0.25 0.63 135 110 . .0.63 1.20 135 110 5 31.20 5.00 135 110 8 4H25 0.25 5.00 145 125 . .5052 H32H340.250.255.005.00215235160180.5454 H32 0.25 1.20 250 180 . 51.20 5.00 250 180 . 8H34 0.25 1.20 270 200 . 41.20 5.00 270 200 . 66061 T4 0.25 1.20 205 110 16 141.20 5.00 205 110 18 16T6 0.25 1.20 29
28、0 240 10 81.20 5.00 290 240 12 10ATo determine conformance to this specification, each value for tensile strength and for yield strength shall be rounded to the nearest 1 MPa and each value forelongation to the nearest 0.5 %, both in accordance with the rounding-off method of Practice E29.BThe basis
29、 for establishment of mechanical property limits is shown in Annex A1.B234M0424. Ordering Information4.1 Orders for material to this specification shall include thefollowing information:4.1.1 The specification designation (which includes thenumber, the year, and the revision letter, if applicable),4
30、.1.2 Quantity in pieces or kilograms,4.1.3 Alloy (Section 7),4.1.4 Temper (Section 8),4.1.5 Outside or inside diameter, wall thickness, and length,4.1.6 For alloy Alclad 3003, state clad inside or outside(12.1).4.2 Additionally, orders for material to this specificationshall include the following in
31、formation when required by thepurchaser:4.2.1 Whether heat treatment in accordance with PracticeB 918 is required (9.2),4.2.2 Whether cut ends of tube are to be deburred (Section14),4.2.3 Whether inspection or witness of inspection and testsby the purchasers representative is required prior to mater
32、ialshipment (Section 15),4.2.4 Whether certification of the material is required(Section 17),4.2.5 Whether marking for identification is required (Sec-tion 18), and4.2.6 Whether Practices B 660 applies and, if so, the level ofpreservation, packaging, and packing required (19.3).5. Manufacture5.1 The
33、 tube shall be produced by drawing an extruded tubemade from hollow extrusion ingot (cast in hollow form orpierced) and extruded by use of the die and mandrel method.6. Responsibility for Quality Assurance6.1 Responsibility for Inspection and TestsUnless other-wise specified in the contract or purch
34、ase order, the producer isresponsible for the performance of all inspection and testrequirements specified herein. The producer may use his ownor any other suitable facilities for the performance of theinspection and test requirements specified herein, unless dis-approved by the purchaser in the ord
35、er or at the time of contractsigning. The purchaser shall have the right to perform any ofthe inspections and tests set forth in this specification wheresuch inspections are deemed necessary to assure that materialconforms to prescribed requirements.6.2 Lot DefinitionAn inspection lot shall be defin
36、ed asfollows:6.2.1 For heat-treated tempers, an inspection lot shall con-sist of an identifiable quantity of material of the same millform, alloy, temper, and thickness traceable to a heat-treated lotor lots, and subjected to inspection at one time.6.2.2 For nonheat-treated tempers, an inspection lo
37、t shallconsist of an identifiable quantity of material of the same millform, alloy, temper, and thickness subjected to inspection atone time.7. Chemical Composition7.1 LimitsThe tube shall conform to the chemical com-position limits in Table 1. Conformance shall be determined bythe producer by analy
38、zing samples taken at the time the ingotsare poured, or samples taken from the finished or semi-finishedproduct. If the producer has determined the chemical compo-sition of the material during the course of manufacture, he shallnot be required to sample and analyze the finished product.NOTE 4It is s
39、tandard practice in the United States aluminum industryto determine conformance to the chemical composition limits prior tofurther processing of ingots into wrought products. Due to the continuousnature of the process, it is not practical to keep a specific ingot analysisidentified with a specific q
40、uantity of finished material.7.2 Number of SamplesThe number of samples taken fordetermination of chemical composition shall be as follows:7.2.1 When samples are taken at the time the ingots arepoured, at least one sample shall be taken for each group ofingots poured simultaneously from the same sou
41、rce of moltenmetal.7.2.2 When samples are taken from the finished or semi-finished product, a sample shall be taken to represent each2000 kg, or fraction thereof, of material in the lot, except thatnot more than one sample shall be required per piece.7.3 Methods of SamplingSamples for determination
42、ofchemical composition shall be taken in accordance with one ofthe following methods:7.3.1 Samples of chemical analysis shall be taken by drill-ing, sawing, milling, turning, clipping, etc., a representativepiece or pieces to obtain a prepared sample of not less than 75g. Sampling shall be in accord
43、ance with Practice E55.7.3.2 Sampling for spectrochemical analysis shall be inaccordance with Practices E 716. Samples for other methods ofanalysis shall be suitable for the form of material beinganalyzed and the type of analytical method used.NOTE 5It is difficult to obtain a reliable analysis of e
44、ach of thecomponents of clad materials using material in its finished state. Areasonably accurate determination of the core composition can be made ifthe cladding is substantially removed prior to analysis. The claddingcomposition is more difficult to determine because of the relatively thinlayer an
45、d because of diffusion of core elements to the cladding. Thecorrectness of cladding alloy used can usually be verified by a combina-tion of metallographic examination and spectrochemical analysis of thesurface at several widely separated points.7.4 Methods of AnalysisThe determination of chemicalcom
46、position shall be made in accordance with suitable chemi-cal (Test Methods E34), or spectrochemical (Test MethodsE 607, and E 1251), methods. Other methods may be used onlywhen no published ASTM method is available. In case ofdispute, the methods of analysis shall be agreed upon betweenthe producer
47、and purchaser.8. Tensile Properties of Material as Supplied8.1 LimitsThe tube shall conform to the tensile propertyrequirements in Table 2.8.2 Number of Specimens:8.2.1 For material having a nominal mass up through 1.7kg/linear m, one tension test specimen shall be taken for each500 kg, or fraction
48、thereof in the lot.8.2.2 For material having a nominal mass over 1.7 kg/linearm, one tension test specimen shall be taken for each 300 m orfraction thereof in the lot.B234M0438.2.3 Other procedures for selecting samples may be em-ployed if agreed upon by the producer and the purchaser.8.3 Test Metho
49、dsThe tension tests shall be made inaccordance with Test Methods B 557M.9. Heat Treatment9.1 Unless otherwise specified in 9.2, producer or supplierheat treatment for the applicable tempers in Table 2 shall be inaccordance with AMS 2772.9.2 When specified, heat treatment of applicable tempers inTable 2 shall be in accordance with Practice B 918.10. Leak Test10.1 Each length of tube less than 40 mm in diameter shallbe tested by either of the following methods, at the option ofthe producer or supplier, consistent with the size limitationsindic
