1、Designation: B819 18Standard Specification forSeamless Copper Tube for Medical Gas Systems1This standard is issued under the fixed designation B819; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A numbe
2、r in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification establishes the requirements for twowall thickness schedules of specially cleaned, straight lengthsof seamless copper tu
3、be, identified as Types K and L, suitablefor medical gas systems. The tube shall be installed inconformance with the requirements of the National FireProtection Association (NFPA) Standard 99, Gas and VacuumSystems (NFPA) Standard 99C, Standard for Hypobaric Facili-ties (NFPA) Standard 99B, and Cana
4、dian Standards Associa-tion (CSA) Standard Z 305.1Z 7396.1, Nonflammable Medi-cal Gas Piping Systems.NOTE 1Types K and L tube are defined in Specification B88.NOTE 2Drawn temper tube is suitable for use with capillary (solderjoint) fittings for brazing.1.2 The values stated in inch-pound units are t
5、o be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 The following safety hazard caveat pertains only to thetest method portion of Section 12 of this specification.Thisstandard does
6、 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, health, andenvironmental practices and determine the applicability ofregulatory limitations prior to use.21.4 This international s
7、tandard 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 World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2
8、. Referenced Documents2.1 ASTM Standards:3B88 Specification for Seamless Copper Water TubeB280 Specification for Seamless Copper Tube for Air Con-ditioning and Refrigeration Field ServiceB601 Classification for Temper Designations for Copper andCopper AlloysWrought and CastB846 Terminology for Coppe
9、r and Copper AlloysE8/E8M Test Methods for Tension Testing of Metallic Ma-terialsE18 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 UnalloyedCopp
10、er by GravimetryE62 Test Methods for Chemical Analysis of Copper andCopperAlloys (Photometric Methods) (Withdrawn 2010)4E243 Practice for Electromagnetic (Eddy Current) Examina-tion of Copper and Copper-Alloy TubesE255 Practice for Sampling Copper and Copper Alloys forthe Determination of Chemical C
11、ompositionE527 Practice for Numbering Metals and Alloys in theUnified Numbering System (UNS)2.2 Other Standards:National Fire Protection Association (NFPA) 99, Gas andVacuum Systems (NFPA) 99C and Standard for Hypo-baric Facilities (NFPA) 99B5Compressed GasAssociation (CGA) G-4.1, Cleaning Equip-men
12、t for Oxygen Service6Canadian Standards Association (CSA) Z 305.1Z 7396.1,Nonflammable Medical Gas Piping Systems71This 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 appr
13、oved March 1, 2018. Published March 2018. Originallyapproved in 1992. Last previous edition approved in 2011 as B819 00 (2011).DOI: 10.1520/B0819-18.2The UNS system for copper and copper alloys (see Practice E527) is a simpleexpansion of the former standard system accomplished by the addition of a p
14、refix“C” and a suffix “00.” The suffix can be used to accommodate composition variationof the base alloy.3For 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 standar
15、ds Document Summary page onthe ASTM website.4The last approved version of this historical standard is referenced onwww.astm.org.5Available from National Fire Protection Association (NFPA), 1 BatterymarchPark, Quincy, MA 02169, http:/www.nfpa.org.6Available from Compressed Gas Association (CGA), 1450
16、1 George CarterWay, Suite 103, Chantilly VA 20151-2923, http:/.7Available from Canadian Standards Association (CSA), 178 Rexdale Blvd.,Toronto, ON M9W 1R3, Canada, http:/www.csagroup.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Dr
17、ive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations i
18、ssued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.13. Terminology3.1 For definitions of terms related to copper and copperalloys, refer to Terminology B846.3.2 Definitions of Terms Specific to This Standard:3.2.1 lengthsstraight pieces of the product.3.2.2 standarduni
19、form lengths established as commercialstandards.3.2.3 tube, copper watera seamless copper tube conform-ing to the particular dimensions commercially known asCopperWaterTube and designated asTypes K and L(see Table1).3.2.4 tube, seamlessa tube produced with a continuousperiphery in all stages of the
20、operations.4. Ordering Information4.1 Orders for material under this specification shall includethe following information:4.1.1 Specification B81900.4.1.2 Nominal or standard size (Column 1 of Table 1) andwhether Type K or L (Sections 3 and 10),4.1.3 Temper (Sections 7 and 8),4.1.4 Length (see 10.5)
21、,4.1.5 Quantity (pieces) of each size and type,4.2 The following options are available and should bespecified at the time of placing the order when required.4.2.1 Whether tension test determinations are required (Sec-tion 8),4.2.2 Whether the tube shall be charged with dry, oil-freenitrogen during c
22、apping, closing, or plugging (see 11.8),4.2.3 Certification, if required (see Section 20), and4.2.4 Mill Test Report, if required, (see Section 21).4.2.5 In addition, when material is purchased for agencies ofthe U.S. government, it shall conform to the SupplementaryRequirements as defined herein wh
23、en specified in the contractor purchase order.5. Materials and Manufacture5.1 MaterialThe materials of manufacture shall be a castbillet of Copper Alloy UNS C12200 of such purity andsoundness as to be suitable for processing into the productsprescribed herein.5.2 ManufactureThe product shall be manu
24、factured bysuch hot working necessary to convert the billet to a tubularshape and cold worked to the finished size.6. Chemical Composition6.1 The material shall conform to the following chemicalrequirements of Copper UNS No. C12200:Copper (incl silver), % 99.9 minimumPhosphorous, % 0.015 to 0.0406.2
25、 These specification limits do not preclude the presenceof other elements. Limits for unnamed elements may beestablished by agreement between the manufacturer or supplierand the purchaser.7. Temper7.1 Seamless copper tube for medical gas systems shall befurnished in the H58 (Drawn General Purpose) t
26、emper, asdefined in Classification B601.8. Mechanical Properties8.1 The tube shall conform to the mechanical propertyrequirements specified in Table 2 when tested in accordanceTABLE 1 Dimensions, Mass, and Tolerances in Diameter and Wall Thickness for Nominal or Standard Copper Water Tube Sizes(All
27、tolerances are plus and minus except as otherwise indicated)NominalorStandardSize,in.OutsideDiameter,in. (mm)AverageOutsideDiameterATolerances,in. (mm)Wall Thickness and Tolerances, in.Type K Type L Theoretical Mass, lb/ft (kg/m)Wall Thickness Wall Tolerance Thickness Tolerance Type K Type L18 0.250
28、 (6.35) 0.001 (0.025) 0.030 (0.762) 0.003 (0.08) 0.025 (0.635) 0.0025 (0.06) 0.080 (0.119) 0.068 (0.102)14 0.375 (9.52) 0.001 (0.025) 0.035 (0.889) 0.0035 (0.089) 0.030 (0.762) 0.003 (0.076) 0.145 (0.216) 0.126 (0.187)38 0.500 (12.7) 0.001 (0.025) 0.049 (1.24) 0.005 (0.13) 0.035 (0.889) 0.004 (0.10)
29、 0.269 (0.400) 0.198 (0.295)12 0.625 (15.9) 0.001 (0.025) 0.049 (1.24) 0.005 (0.13) 0.040 (1.02) 0.004 (0.10) 0.344 (0.512) 0.285 (0.424)58 0.750 (19.1) 0.001 (0.025) 0.049 (1.24) 0.005 (0.13) 0.042 (1.07) 0.004 (0.10) 0.418 (0.622) 0.362 (0.539)34 0.875 (22.3) 0.001 (0.025) 0.065 (1.65) 0.006 (0.15
30、) 0.045 (1.14) 0.004 (0.10) 0.641 (0.954) 0.455 (0.677)1 1.125 (28.6) 0.0015 (0.038) 0.065 (1.65) 0.006 (0.15) 0.050 (1.27) 0.005 (0.13) 0.839 (1.25) 0.655 (0.975)114 1.375 (34.9) 0.0015 (0.038) 0.065 (1.65) 0.006 (0.15) 0.055 (1.40) 0.006 (0.15) 1.040 (1.55) 0.884 (1.32)112 1.625 (41.3) 0.002 (0.05
31、1) 0.072 (1.83) 0.007 (0.18) 0.060 (1.52) 0.006 (0.15) 1.360 (2.02) 1.140 (1.70)2 2.125 (54.0) 0.002 (0.051) 0.083 (2.11) 0.008 (0.20) 0.070 (1.78) 0.007 (0.18) 2.060 (3.07) 1.750 (2.60)212 2.625 (66.7) 0.002 (0.051) 0.095 (2.41) 0.010 (0.25) 0.080 (2.03) 0.008 (0.20) 2.930 (4.36) 2.480 (3.69)3 3.12
32、5 (79.4) 0.002 (0.510) 0.109 (2.77) 0.011 (0.28) 0.090 (2.29) 0.009 (0.23) 4.000 (5.95) 3.330 (4.96)312 3.625 (92.1) 0.002 (0.051) 0.120 (3.05) 0.012 (0.30) 0.100 (2.54) 0.010 (0.25) 5.120 (7.62) 4.290 (6.38)4 4.125 (105) 0.002 (0.051) 0.134 (3.40) 0.013 (0.33) 0.110 (2.79) 0.011 (0.28) 6.510 (9.69)
33、 5.380 (8.01)5 5.125 (130) 0.002 (0.051) 0.160 (4.06) 0.016 (0.41) 0.125 (3.18) 0.012 (0.30) 9.670 (14.4) 7.610 (11.3)6 6.125 (156) 0.002 (0.051) 0.192 (4.88) 0.019 (0.48) 0.140 (3.56) 0.014 (0.36) 13.900 (20.7) 10.200 (15.2)8 8.125 (206)H+0.002 (0.051) 0.271 (6.88) 0.027 (0.69) 0.200 (5.08) 0.020 (
34、0.51) 25.900 (38.5) 19.300 (28.7)0.006 (0.150)AThe average outside diameter of a tube is the average of the maximum and minimum outside diameter, as determined at any one cross section of the tube.B819 182with Test Methods E18 and E8/E8M, respectively. Tension testdeterminations need not be made exc
35、ept when indicated by thepurchaser at the time of placing the order.Aconvenient methodof indicating that these tests are to be made is to state that “TestProcedure T” is required (see 4.2.1). Where agreement on theRockwell hardness tests cannot be reached, the tensile strengthrequirements of Table 2
36、 shall be the basis for acceptance orrejection.9. Nondestructive Testing9.1 Each tube up to and including 3-in. (76.2-mm) standardsize, 318-in. (79.4-mm) outside diameter, shall be subjected toan eddy-current test. Testing shall follow the procedures ofPractice E243, except for the determination of
37、“end effect.”Tubes shall be passed through an eddy-current test unitadjusted to provide information on the suitability of the tubefor the intended application.9.1.1 Either notch depth or drilled hole standards shall beused.9.1.1.1 Notch-depth standards, rounded to the nearest0.001 in. (0.025 mm) sha
38、ll be 22 % of the wall thickness. Thenotch-depth tolerance shall be plus and minus 0.0005 in.(0.013 mm). Alternatively at the option of the manufacturerusing speed-insensitive eddy-current units that are equipped sothat a fraction of the maximum imbalance signal can beselected, the following percent
39、 maximum imbalance signalsmay be used:Standard Tube Size, in.Maximum Percent ImbalanceSignal MagnitudeUp to38, incl 0.212 to 2, incl 0.3Over 2 to 3, incl 0.49.1.1.2 Drilled holes shall be drilled radially through thewall using a suitable drill jig that has a bushing to guide thedrill, care being tak
40、en to avoid distortion of the tube whiledrilling. The diameter of the drilled hole shall be in accordancewith the following and shall not vary by more than +0.001 in.(+0.026 mm), 0.000 in. (0.000 mm) of the hole diameterspecified.Tube OutsideDiameter, in.Diameter of DrilledHoles, in. Drill Number14
41、to34, incl 0.025 72Over34 to 1, incl 0.031 68Over 1 to 114, incl 0.036 64Over 114 to 112, incl 0.042 58Over 112 to 134, incl 0.046 58Over 134 to 2, incl 0.052 559.1.2 Tubes that do not activate the signalling device of theeddy-current testers shall be considered as conforming to therequirements of t
42、his test. Tubes with discontinuities indicatedby the testing unit may at the option of the manufacturer bereexamined or retested to determine whether the discontinuingis cause for rejection. Signals that are found to have beencaused by minor mechanical damage, soil or moisture, shall notbe cause for
43、 rejection of the tubes provided the tube dimen-sions are still within prescribed limits and the tube is suitablefor its intended application.9.2 Tube made to this specification shall be capable ofwithstanding the pressure test of 9.2.1 or 9.2.2. Should subse-quent testing by the purchaser establish
44、 that the material doesnot meet these requirements, the material may be rejected.9.2.1 The tube shall stand without showing evidence ofleakage, and an internal hydrostatic pressure sufficient tosubject the material to a fiber stress of 6000 psi (41 MPa)calculated from the following equation for thin
45、 hollow cylin-ders under tension:P 52 StD 2 0.8t(1)where:P = hydrostatic pressure, psi (MPa);S = allowable stress of the material, psi (MPa);t = wall thickness, in. (mm); andD = outside diameter of the tube, in. (mm).9.2.2 The tube shall stand an internal air pressure of 60 psig(415 kPa) for 5 s wit
46、hout showing evidence of leakage.The testmethod used shall permit easy visual detection of any leakage,such as by having the tube under water or by the pressuredifferential method.10. Dimensions, Mass and Permissible Variations10.1 For the purpose of determining conformance with thedimensional requi
47、rements specified in this specification, anymeasured value outside the specified limiting values for anydimensions may be cause for rejection.10.2 Standard Dimensions, Wall Thickness, and DiameterTolerances shall be in accordance with Table 1.10.3 Theoretical Weights for purposes of calculatingweigh
48、ts, cross sections, and so forth, the density of the coppershall be taken as 0.323 lb/in.3(8.94 g/cm3).10.4 Roundness Tolerance shall be as specified in Table 3.The deviation from roundness is measured as the differencebetween major and minor diameters as determined at any onecross section of the tu
49、be.TABLE 2 Mechanical PropertiesTemper DesignationFormRockwell HardnessATensile StrengthStandard Former Scale Value min, ksiB(MPa)CH58 drawn straight 30T 30 min 36 (250)general lengthspurposeARockwell hardness tests shall be made on the inside surfaces of the tube. Whensuitable equipment is not available for determining the specified Rockwellhardness, other Rockwell scales and values may be specified subject to betweenthe purchaser and the supplier.Bksi = 1000 psi.CMPa = pascal 106.TABLE 3 Roundness Tolerancet/D (Ratio of Wall
