1、Designation: B302 12Standard Specification forThreadless Copper Pipe, Standard Sizes1This standard is issued under the fixed designation B302; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in p
2、arentheses 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 Department of Defense.1. Scope*1.1 This specification establishes requirements for thread-less, sea
3、mless, deoxidized copper pipe (TP) in straight lengths,in all nominal or standard pipe sizes, for piping systems thatare assembled with brazed-joint pipe fittings. The pipe shall beproduced from either of coppers UNS Nos. C10300 or C12200.1.2 UnitsValues stated in inch-pound units are to beregarded
4、as standard. The values given in parentheses aremathematical conversions to SI units, which are provided forinformation only and are not considered standard.1.3 The following safety hazard caveat pertains only to thetest methods described Section 16 of this specification: Thisstandard does not purpo
5、rt 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 regulatory limita-tions prior to its use.2. Referenced Documents2.1 ASTM Standards:2B5
6、77 Test Methods for Detection of Cuprous Oxide (Hy-drogen Embrittlement Susceptibility) in CopperB601 Classification for Temper Designations for Copperand Copper AlloysWrought and CastB846 Terminology for Copper and Copper AlloysB950 Guide for Editorial Procedures and Form of ProductSpecifications f
7、or Copper and Copper AlloysE8 Test Methods for Tension Testing of Metallic MaterialsE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE53 Test Method for Determination of Copper in UnalloyedC
8、opper by GravimetryE62 Test Methods for Chemical Analysis of Copper andCopper Alloys (Photometric Methods)3E243 Practice for Electromagnetic (Eddy-Current) Exami-nation of Copper and Copper-Alloy TubesE255 Practice for Sampling Copper and Copper Alloys forthe Determination of Chemical Composition3.
9、Terminology3.1 For definitions of terms related to copper and copperalloys, refer to Terminology B846.4. Ordering Information4.1 Include the following specified choices when placingorders for product under this specification, as applicable:4.1.1 ASTM designation and year of issue,4.1.2 Copper UNS No
10、. designation,4.1.3 Nominal or standard size (Table 1), and4.1.4 QuantityTotal length, total weight, or number ofpieces of each size.4.2 The following options are available, but may not beincluded unless specified at the time of placing of the orderwhen required:4.2.1 Tension test (Mechanical Proper
11、ty Requirements Sec-tion),4.2.2 Hydrostatic test (Other Requirements Section),4.2.2.1 Test Pressure over 1000 psi (6.9 MPa),4.2.3 Pneumatic test (Other Requirements Section),4.2.4 Heat identification or traceability requirements (5.1.1),4.2.5 Certification (Section 20),4.2.6 Mill test report (Sectio
12、n 21).4.2.7 Source inspection requirement (18.2), and4.2.8 When the specification number must be shown on theshipping unit (Section 22).1This specification is under the jurisdiction ofASTM Committee B05 on Copperand Copper Alloys and is the direct responsibility of Subcommittee B05.04 on Pipeand Tub
13、e.Current edition approved April 1, 2012. Published May 2012. Originallyapproved in 1955. Last previous edition approved in 2007 as B302 07. DOI:10.1520/B0302-12.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book
14、of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Withdrawn. The last approved version of this historical standard is referencedon www.astm.org.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Bar
15、r Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5. Materials and Manufacture5.1 MaterialThe material of manufacture shall be castbillets, bars, or tubes of copper UNS No. C10300 or C12200 ofsuch purity and soundness as to be suitable for processing intofinished lengths o
16、f pipe to meet the properties prescribedherein.5.1.1 When specified in the contract or purchase order, thatheat identification or traceability is required, the purchasershall specify the details desired.NOTE 1Due to the discontinuous nature of the processing of castingsinto wrought products, it is n
17、ot always practical to identify specific castinganalysis with a specific quantity of finished product.5.2 Manufacture:5.2.1 The pipe shall be manufactured by such hot extrusionor piercing and subsequent cold working as to produce auniform, seamless wrought structure in the finished product.5.2.2 The
18、 product shall be cold worked to the finished sizeso as to meet the temper properties specified.6. Chemical Composition6.1 The material shall conform to the chemical compositionrequirements in Table 2 for the copper UNS No. designationspecified in the ordering information.6.2 These composition limit
19、s do not preclude the presenceof other elements. By agreement between the manufacture andpurchaser, limits may be established and analysis required forunnamed elements.7. Temper7.1 The product shall be furnished in the H58 (drawngeneral purpose) temper as defined in Classification B601.8. Mechanical
20、 Property Requirements8.1 Tensile Strength Requirement:8.1.1 Product in all sizes and coppers shall have a minimumtensile strength of 36 ksi (250 MPa) when tested in accordancewith Test Methods E8.8.1.2 The tension test need not be performed except whenspecified by the purchaser in the ordering info
21、rmation at thetime of placing of the order.8.2 Rockwell Hardness RequirementProduct in all sizesand coppers shall have a minimum Rockwell F hardness of 55when tested in accordance with Test Methods E18.9. Performance Requirements9.1 Microscopical ExaminationThe pipe shall be madefrom copper free fro
22、m cuprous oxide, as determined bymicroscopical examination at a magnification of 75 diametersaccording to Test Method A of Test Methods B577. Whencopper UNS No. C12200 is supplied, microscopical examina-tion for cuprous oxide is not required.10. Other Requirements Nondestructive TestRequirements10.1
23、 Electromagnetic (Eddy-Current) Test:10.1.1 Each tube up to and including 212-in. nominal pipesize shall be subjected to an eddy-current test. Testing shallfollow the procedures of Practice E243 and 16.2.3.10.1.1.1 Hydrostatic Test AlternativeAs an alternative tothe eddy-current test for tubes of di
24、ameters above 1.25 in. (32mm), the manufacturer shall perform the hydrostatic test to therequirements of 10.2.10.1.1.2 The provisions for the determination of “end-effect” in Practice E243 shall not apply.TABLE 1 Dimensions and Weights and Tolerance in Diameter and Wall Thickness for Copper Threadle
25、ss Pipe (TP) SizesNominal or StandardPipe Size, in.Outside Diameter, in.(mm)Inside Diameter,in. (mm),Wall Thickness,in. (mm)Cross-SectionalArea of Bore,in.2(cm2)Theoretical Weight,lb/ft (kg/m)Tolerances, in. (mm)Average OutsideDiameter,AAll MinusWall Thickness Plusand Minus14 0.540 (13.7) 0.410 (10.
26、4) 0.065 (1.65) 0.132 (0.852) 0.376 (0.559) 0.004 (0.10) 0.0035 (0.089)38 0.675 (17.1) 0.545 (13.8) 0.065 (1.65) 0.233 (1.50) 0.483 (0.719) 0.004 (0.10) 0.004 (0.10)12 0.840 (21.3) 0.710 (18.0) 0.065 (1.65) 0.396 (2.55) 0.613 (0.912) 0.005 (0.13) 0.004 (0.10)34 1.050 (26.7) 0.920 (23.4) 0.065 (1.65)
27、 0.665 (4.29) 0.780 (1.16) 0.005 (0.13) 0.004 (0.10)1 1.315 (33.4) 1.185 (30.1) 0.065 (1.65) 1.10 (7.10) 0.989 (1.47) 0.005 (0.13) 0.004 (0.10)114 1.660 (42.2) 1.530 (38.9) 0.065 (1.65) 1.84 (11.9) 1.26 (1.87) 0.006 (0.15) 0.004 (0.10)112 1.900 (48.3) 1.770 (45.0) 0.065 (1.65) 2.46 (15.9) 1.45 (2.16
28、) 0.006 (0.15) 0.004 (0.10)2 2.375 (60.3) 2.245 (57.0) 0.065 (1.65) 3.96 (25.5) 1.83 (2.72) 0.007 (0.18) 0.006 (0.15)212 2.875 (73.0) 2.745 (69.7) 0.065 (1.65) 5.92 (38.2) 2.22 (3.30) 0.007 (0.18) 0.006 (0.15)3 3.500 (88.9) 3.334 (84.7) 0.083 (2.11) 8.73 (56.3) 3.45 (5.13) 0.008 (0.20) 0.007 (0.18)3
29、12 4.000 (102) 3.810 (96.8) 0.095 (2.41) 11.4 (73.5) 4.52 (6.73) 0.008 (0.20) 0.007 (0.18)4 4.500 (114) 4.286 (109) 0.107 (2.72) 14.4 (92.9) 5.72 (8.51) 0.010 (0.25) 0.009 (0.23)5 5.562 (141) 5.298 (135) 0.132 (3.40) 22.0 (142) 8.73 (13.0) 0.012 (0.30) 0.010 (0.25)6 6.625 (168) 6.309 (160) 0.158 (4.
30、01) 31.3 (202) 12.4 (18.5) 0.014 (0.36) 0.010 (0.25)8 8.625 (219) 8.215 (209) 0.205 (5.21) 53.0 (342) 21.0 (31.2) 0.018 (0.46) 0.014 (0.36)10 10.750 (273) 10.238 (260) 0.256 (6.50) 82.3 (531) 32.7 (48.7) 0.018 (0.46) 0.016 (0.41)12 12.750 (324) 12.124 (308) 0.313 (7.95) 115 (742) 47.4 (70.5) 0.018 (
31、0.46) 0.020 (0.51)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.TABLE 2 Chemical RequirementsCopper UNS No.Composition, %Copper (Incl Silver), min PhosphorusC10300 99.95A0.001 to 0.005C12200 99.
32、9 0.015 to 0.040ACopper + silver + phosphorus.B302 12210.1.2 The tested tubes, which do not actuate the signalingdevice of the testing unit, shall be considered as conforming tothe requirements of the test.10.1.3 Either notch depth or drilled hole standards shall beused.10.1.3.1 Notch depth standard
33、s shall be 10 % of the nominalwall thickness.10.1.3.2 The sizes of drilled hole standards shall be deter-mined in accordance with Table X1.2 of Practice E243.10.2 Hydrostatic Test:10.2.1 When specified in the contract or purchase order, oras an alternative to the eddy-current test for tubes above 1.
34、25in. (32 mm) in diameter (see 10.1.1.2), each tube shall stand,without showing evidence of leakage, an internal hydrostaticpressure sufficient to produce a fiber stress of 6000 psi (41MPa) as determined by the following equation for thin hollowcylinders under tension:P 5 2St/D 2 0.8t! (1)where:P =
35、hydrostatic pressure, psi (MPa);t = wall thickness of the material, in. (mm);D = outside diameter of the material, in. (mm); andS = allowable stress of the material, psi (MPa).10.2.1.1 The tube need not be subjected to a pressure gagereading over 1000 psi (6.9 MPa) except when specified in thecontra
36、ct or purchase order.10.3 Pneumatic TestWhen specified in the contract orpurchase order, each tube shall be subjected to a minimuminternal air pressure of 60 psig (415 kPa) for 5 s withoutshowing evidence of leakage.11. Dimensions, Mass, and Permissible Variations11.1 GeneralThe standard method of s
37、pecifying wallthickness shall be in decimal fractions of an inch. For thepurpose of determining conformance with the dimensionalrequirements prescribed in this specification, any measuredvalue outside the specified limiting values for any dimensionshall be cause for rejection.11.2 Dimensions and Wei
38、ghtsDimensions and weights forthe various nominal or standard sizes, together with tolerancesin diameter and wall thickness, shall be in accordance withTable 1.11.3 Wall Thickness and Diameter TolerancesWall thick-ness and diameter tolerances shall be in accordance with Table1.11.4 Roundness Toleran
39、ceThe roundness tolerances shallbe in accordance with Table 3.11.5 Length and Length ToleranceThe standard length ofthe material shall be 20 ft (6.10 m) except for the 12-in.(305-mm) size, which shall be 15 ft (4.57 m). The lengthtolerances shall be plus 1 in. (25 mm), minus 0.11.6 Squareness of Cut
40、The departure from squareness ofthe end of any pipe shall not exceed the following:Outside Diameter,in. (mm) ToleranceUp to58 (15.9) incl 0.010 in. (0.25 mm)Over58 (15.9) 0.016 in./in. (0.016 mm/mm) of diameter12. Workmanship, Finish and Appearance12.1 The product shall be free of defects, but blemi
41、shes ofa nature that do not interfere with the intended application areacceptable.13. Sampling13.1 The lot size, portion size, and sample size of thefinished product shall be as follows:13.1.1 Lot SizeAn inspection lot shall be 5000 lbs (2270kg) or fraction thereof, subject to inspection at one time
42、.13.1.2 Portion SizeA portion shall be taken to representan inspection lot according to the following schedule:Number of Pieces in Lot Number of Samples to be TakenA1to50 151 to 200 2201 to 1500 3Over 1500 0.2 % of the total number of pieces in the lot, butnot to exceed ten pieces.AEach test portion
43、 shall be taken from a separate tube.13.2 Chemical AnalysisSamples for chemical analysisshall be taken in accordance with Practice E255. Drillings,millings, and so forth shall be taken in approximately equalweight from each of the sample pieces selected in accordancewith 13.1 and combined into one c
44、omposite sample. Theminimum weight of the composite sample that is to be dividedinto three equal parts shall be 150 g.13.2.1 As an alternative to sampling in accordance withPractice E255, the manufacturer shall determine conformanceto chemical composition as follows: Conformance shall bedetermined b
45、y the manufacturer by analyzing samples taken atthe time the castings are poured or samples taken from thesemifinished product. If the manufacturer determines thechemical composition of the material during the course ofmanufacture, the manufacturer shall not be required to sampleand analyze the fini
46、shed product. The number of samples takenfor determination of chemical composition shall be as follows:13.2.1.1 When samples are taken at the time the castings arepoured, at least one sample shall be taken for each group ofcastings poured simultaneously from the same source ofmolten metal.13.2.1.2 W
47、hen samples are taken from the semifinishedproduct, a sample shall be taken to represent each 10 000 lb(4550 kg) or fraction thereof, except that not more than onesample shall be required per piece.14. Number of Tests and Retests14.1 Tests:TABLE 3 Roundness Tolerancest/D, Ratio of Wall Thickness to
48、OutsideDiameterDiameter Roundness Tolerances,A% of Outside Diameter(Expressed to the Nearest 0.001in.) (Nearest 0.01 mm)0.01 to 0.03, incl 1.5Over 0.03 to 0.05, incl 1.0Over 0.05 to 0.10, incl 0.8Over 0.10 0.7AThe deviation from roundness is measured as the difference between majorand minor outside
49、diameters as determined at any one cross section of the tube.B302 12314.1.1 Chemical AnalysisChemical composition shall bedetermined as per the element mean of the results from at leasttwo replicate analyses of the samples.14.1.2 Mechanical PropertiesThe required tests for me-chanical properties shall be made on specimens taken fromeach sample piece selected.14.2 Retests:14.2.1 When the results of tests obtained by the purchaserfail to conform to the requirements of the product specification,and if requested by the manufacturer or supplier
