1、Designation: B42 15Standard Specification forSeamless Copper Pipe, Standard Sizes1This standard is issued under the fixed designation B42; the number immediately following the designation indicates the year of originaladoption or, in the case of revision, the year of last revision.Anumber in parenth
2、eses indicates the year of last reapproval.Asuperscriptepsilon () 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 specification2establishes the requirements forseamless copper
3、pipe in all nominal or standard pipe sizes, bothregular and extra-strong, suitable for use in plumbing, boilerfeed lines, and for similar purposes.31.2 UnitsThe values stated in inch-pound units are to beregarded as the standard. The values given in parentheses aremathematical conversions to SI unit
4、s, which are provided forinformation only and are not considered standard.1.3 The following safety hazard caveat pertains only to thetest methods described in this specification.1.3.1 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is therespo
5、nsibility 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 ASTM Standards:4B153 Test Method for Expansion (Pin Test) of Copper andCopper-Alloy Pipe and TubingB170 Spec
6、ification for Oxygen-Free Electrolytic CopperRefinery ShapesB577 Test Methods for Detection of Cuprous Oxide (Hydro-gen Embrittlement Susceptibility) in CopperB601 Classification for Temper Designations for Copper andCopper AlloysWrought and CastB846 Terminology for Copper and Copper AlloysB968/B968
7、M Test Method for Flattening of Copper andCopper-Alloy Pipe and TubeE8/E8M Test Methods for Tension Testing of Metallic Ma-terialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE53 Test Method for Determination of Copper in UnalloyedCopper by Gravim
8、etryE62 Test Methods for Chemical Analysis of Copper andCopperAlloys (Photometric Methods) (Withdrawn 2010)5E243 Practice for Electromagnetic (Eddy Current) Examina-tion of Copper and Copper-Alloy TubesE255 Practice for Sampling Copper and Copper Alloys forthe Determination of Chemical CompositionE4
9、78 Test Methods for Chemical Analysis of Copper AlloysE527 Practice for Numbering Metals and Alloys in theUnified Numbering System (UNS)3. Terminology3.1 Definitions:3.1.1 For definitions of terms related to copper and copperalloys, refer to Terminology B846.4. Ordering Information4.1 Include the fo
10、llowing 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. designation, if required, (see Chemi-cal Composition section),4.1.3 Temper (see Temper section and Table 2),4.1.4 Pipe size, regular or extra-
11、strong, (see Dimensionssection and Table 3),4.1.5 Length (see 10.3) if different than standard,4.1.6 Total length 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:1This specification is under the jurisdicti
12、on ofASTM Committee B05 on Copperand Copper Alloys and is the direct responsibility of Subcommittee B05.04 on Pipeand Tube.Current edition approved May 15, 2015. Published July 2015. Originallyapproved in 1922. Last previous edition approved in 2010 as B42 10. DOI:10.1520/B0042-15.2For ASME Boiler a
13、nd Pressure Vessel Code applications, see related Specifi-cation SB-42 in Section II of that Code.3The UNS system for copper and copper alloys (see Practice E527) is a simpleexpansion of the former standard designation system accomplished by the additionof a prefix “C” and a suffix “00.” The suffix
14、can be used to accommodatecomposition variations of the base alloy.4For 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 we
15、bsite.5The 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 States14.2.1 If product is ordered for
16、 ASME Boiler and PressureVessel Code Application (See Certification Section).4.2.2 If product is required for bending (see 6.2) and thetemper to be furnished,4.2.3 Certification, if required (see Certification section),4.2.4 Test report, if required (see Test Report section),4.2.5 Hydrostatic test,
17、if required (see Nondestructive Test-ing section),4.2.5.1 If hydrostatic test pressure above 1000 psi isrequired,4.2.6 Pneumatic test, if required (see Nondestructive Test-ing section).4.2.7 If product is purchased for agencies of the U.S.Government (see the Other Requirements section of thisspecifi
18、cation, and4.2.8 If specification number is required to be shown oneach shipping unit (see Packaging and Package Markingsection)5. Chemical Composition5.1 The material shall conform to the following chemicalrequirements:Copper (incl silver), min, % 99.9Phosphorus, max, % 0.045.2 The pipe shall be pr
19、oduced from one of the followingcoppers, and unless otherwise specified, anyone of them ispermitted to be furnished:Copper UNS No.Previously UsedDesignationType of CopperC10200 OF Oxygen-free without residualdeoxidantsC10300 Oxygen-free, extra-low phosphorusC10800 Oxygen-free, low phosphorusC12000 D
20、LP Phosphorized, low residualphosphorusC12200 DHP Phosphorized, high residualphosphorus5.3 When the copper UNS No. designation is specified, thematerial shall conform to the chemical requirements specifiedin Table 1.5.4 These composition limits do not preclude the presenceof other elements. By agree
21、ment between manufacturer orsupplier and purchaser, limits may be established and analysisrequired for unnamed elements.6. Temper6.1 The standard tempers as prescribed in ClassificationB601, for products described in this specification are:6.1.1 Annealed O616.1.2 Light Drawn H556.1.3 Hard Drawn H806
22、.2 When pipe is required for bending, it shall be sospecified in the purchase order, and the pipe shall be furnishedin the temper agreed upon between the manufacturer orsupplier and the purchaser.7. Mechanical Property Requirements7.1 Tensile Strength Requirements:7.1.1 Product furnished under this
23、specification shall con-form to the tensile requirements prescribed in Table 2, whentested in accordance with Test Methods E8/E8M.8. Performance Requirements8.1 Expansion Test:8.1.1 Pipe ordered in the annealed (O61) temper, selectedfor test, shall withstand an expansion of 25 % of the outsidediamet
24、er when expanded in accordance with Test MethodB153. The expanded pipe shall show no cracking or rupturevisible to the unaided eye. Pipe ordered in the drawn tempersH55 or H80 are not subject to this test.NOTE 1The term “unaided eye,” as used herein, permits the use ofcorrective spectacles necessary
25、 to obtain normal vision.8.2 Flattening Test:8.2.1 As an alternative to the expansion test for pipe over 4in. (102 mm) in diameter in the annealed temper, a flatteningtest in accordance with Test Method B968/B968M shall beperformed.8.3 Microscopical Examination:8.3.1 The pipe shall be made from copp
26、er that is free ofcuprous oxide as determined by microscopical examination inaccordance with Method A of Test Methods B577 at a 75magnification.8.3.2 When Copper UNS No. C12200 is supplied, micro-scopical examination for cuprous oxide is not required.9. Other Requirements9.1 Nondestructive Testing:9
27、.1.1 The material shall be tested in the final size but ispermitted to be tested before the final anneal or heat treatment,when these thermal treatments are required, unless otherwiseagreed upon by the manufacturer or supplier and purchaser.TABLE 1 Chemical RequirementsCopper UNS No. Copper (incl Si
28、lver), min, % Phosphorus, %C10200A99.95 .C10300 99.95B0.001 to 0.005C10800 99.95B0.005 to 0.012C12000 99.90 0.004 to 0.012C12200 99.9 0.015 to 0.040AOxygen in C10200 shall be 10 ppm max.BCopper + silver + phosphorus.TABLE 2 Tensile RequirementsTemper Designation Pipe SizeNominal orStandard, in.Tensi
29、leStrength,min,ksiA(MPa)BYield Strength,Cmin,ksiA(MPa)BCode NameO61 annealed all 30 (294) 9 (88)DH80 hard drawn18 2, incl 45 (310) 40 (280)H80 hard drawn over 2 38 (260) 32 (220)H55 light drawn 212, incl 36 (250) 30 (210)Aksi = 1000 psi.BSee Appendix X1.CAt 0.5 % extension under load.DLight-straight
30、ening operation is permitted.B421529.2 Eddy-Current TestEach piece of material from18-in.up to and including 212-in. nominal outside diameter, or withinthe capabilities of the eddy-current tester, shall be subjected toan eddy-current test. Testing shall follow the procedures ofPractice E243, except
31、for determination of “end effect.” Thematerial shall be passed through an eddy-current testing unitadjusted to provide information on the suitability of thematerial for the intended application.9.2.1 Notch-depth standards rounded to the nearest 0.001 in.(0.025 mm) shall be 10 % of the nominal wall t
32、hickness. Thenotch depth tolerance shall be 60.0005 in. (0.013 mm).Alternatively, when a manufacturer uses speed-insensitiveequipment that allows the selection of a maximum imbalancesignal, a maximum imbalance signal of 0.3 % is permitted tobe used.9.2.2 Material that does not actuate the signaling
33、device ofthe eddy-current test shall be considered as conforming to therequirements of this test. Material with discontinuities indi-cated by the testing unit is permitted to be reexamined orretested, at the option of the manufacturer, to determinewhether the discontinuity is cause for rejection. Si
34、gnals that arefound to have been caused by minor mechanical damage, soil,or moisture shall not be cause for rejection of the materialprovided the dimensions of the material are still withinprescribed limits and the material is suitable for its intendedapplication.9.3 Hydrostatic TestWhen specified,
35、the material shallstand, without showing evidence of leakage, an internal hydro-static pressure sufficient to subject the material to a fiber stressof 6000 psi (41 MPa), determined by the following equationfor thin hollow cylinders under tension. The material need notbe tested at a hydrostatic press
36、ure of over 1000 psi (6.9 MPa)unless so specified.P 5 2St/D 2 0.8t! (1)where:P = hydrostatic pressure, psi (or MPa);t = wall thickness of the material, in. (or mm);D = outside diameter of the material in. (or mm); andS = allowable stress of the material, psi (or MPa).9.4 Pneumatic TestWhen specified
37、, the material shall besubjected to an internal air pressure of 60 psi (415 kPa)minimum for 5 s without showing evidence of leakage.The testmethod used shall permit easy visual detection of any leakage,such as by having the material under water or by the pressure-differential method.Any evidence of
38、leakage shall be cause forrejection.9.5 Purchases for U.S. GovernmentIf the product is pur-chased for agencies of the U.S. Government, when specified inthe contract or purchase order, the product furnished shallconform to the conditions specified in the SupplementaryRequirements of this specificatio
39、n.10. Dimensions and Permissible Variations10.1 For the purpose of determining conformance with thedimensional requirements prescribed in this specification, anymeasured value outside the limiting values for any dimensionsshall be sufficient cause for rejection.10.2 Standard Dimensions, Wall Thickne
40、ss, and DiameterTolerancesThe standard dimensions, wall thickness, anddiameter tolerances shall be in accordance with Table 3.10.3 Length and Length TolerancesThe standard length ofcopper pipe is 12 ft (3.66 m) with a tolerance of 612 in. (13mm).10.4 Roundness:10.4.1 For pipe of H (drawn) tempers in
41、 straight lengths, theroundness tolerances shall be as follows:t/d (ratio ofWall Thickness toOutside Diameter)Roundness Tolerances asPercent of Outside Diameter(Expressed to the Nearest0.001 in. (0.025 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 0.710.4.2
42、 Compliance with the roundness tolerance shall bedetermined by taking measurements on the outside diameteronly, irrespective of the manner in which the pipe dimensionsare specified.10.4.3 The deviation from roundness is measured as thedifference between major and minor diameters as determined atany
43、one cross section of the tube.10.5 Squareness of CutThe 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 diameter10.6 Straightness ToleranceFor pipe of
44、 H (drawn) tem-pers of Nominal Pipe Sizes from14 to 12 in. inclusive, themaximum curvature (depth of arc) shall not exceed12 in. (13mm) in any 10-ft portion of the total length. For H temper pipeof other sizes, and for the O61 (annealed) temper, no numericalvalues are established, however, the strai
45、ghtness of the pipeshall be suitable for the intended application.11. Workmanship, Finish, and Appearance11.1 The product shall be free of defects, but blemishes of anature that do not interfere with the intended application areacceptable. It shall be well cleaned and free of dirt.12. Sampling12.1 S
46、amplingThe lot size, portion size, and selection ofsample pieces shall be as follows:12.1.1 Lot SizeThe lot size shall be as follows:Pipe Size, in. Lot Weight, lb (kg)Up to 112 , incl 5 000 (2270) or fraction thereofOver 112 to 4, incl 10 000 (4550) or fraction thereofOver 4 40 000 (18 100) or fract
47、ion thereof12.1.2 Portion SizeSample pieces shall be taken for testpurposes from each lot according to the following schedule:B42153Number of Pieces in Lot Number of Sample Pieces to be TakenA1to50 151 to 200 2201 to 1500 3Over 1500 0.2 % of total number of pieces in the lot, butnot to exceed ten sa
48、mple piecesAEach sample piece shall be taken from a separate tube.13. Number of Tests and Retests13.1 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 pi
49、eces selected in accordancewith 12.1.2 and combined into one composite sample. Theminimum weight of the composite sample that is to be dividedinto three equal parts shall be 150 g.13.1.1 Instead of sampling in accordance with PracticeE255, the manufacturer shall have the option of determiningconformance to chemical composition as follows: Confor-mance shall be determined by the manufacturer by analyzingsamples taken at the time the castings are poured or samplestaken from the semifinished product. If the manufacturerdetermines the chemical composition
