1、Designation: B 552 98 (Reapproved 2004)Standard Specification forSeamless and Welded CopperNickel Tubes for WaterDesalting Plants1This standard is issued under the fixed designation B 552; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revi
2、sion, 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 establishes requirements for seamlessand welded copper-nickel tubes from 0.625
3、to 1.25 in. (15.9 to31.8 mm) in diameter for use in heat exchangers in waterdesalting plants. The following alloys are involved: CopperAlloy UNS Nos. C70600, C71500, C71640, and C72200.1.2 The values stated in inch-pound units are the standard.Values given in parentheses are provided for information
4、 only.1.3 The following safety hazard caveat pertains only to thetest methods of Section 16 described in 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 appropri
5、ate safety and healthpractices and determine the applicability of regulatory limita-tions prior to its use.2. Referenced Documents2.1 ASTM Standards:2B 111 Specification for Copper and Copper-Alloy SeamlessCondenser Tubes and Ferrule StockB 153 Test Method for Expansion (Pin Test) of Copper andCoppe
6、r-Alloy Pipe and TubingB 543 Specification for Welded Copper and Copper-AlloyHeat Exchanger TubeB 601 Classification for Temper Designations for Copperand Copper AlloysWrought and CastB 846 Terminology for Copper and Copper AlloysE 8 Test Methods for Tension Testing of Metallic MaterialsE 62 Test Me
7、thods for Chemical Analysis of Copper andCopper Alloys (Photometric Methods)E 76 Test Methods for Chemical Analysis of Nickel-CopperAlloys3E 118 Test Methods for Chemical Analysis of Copper-Chromium AlloysE 243 Practice for Electromagnetic (Eddy-Current) Exami-nation of Copper and Copper-Alloy Tubes
8、E 255 Practice for Sampling Copper and Copper Alloys forDetermination of Chemical CompositionE 478 Test Methods for Chemical Analysis of CopperAlloys3. Terminology3.1 For definitions of terms related to copper and copperalloys, refer to Terminology B 846.4. Classification4.1 Tubes furnished to this
9、specification are classified intotwo types, as follows:4.1.1 Seamless tube and4.1.2 Welded tube.5. Ordering Information5.1 Orders for products under this specification shall includethe following information:5.1.1 ASTM designation and year of issue,5.1.2 Copper Alloy UNS number designation,5.1.3 Whet
10、her seamless or welded (Section 4),5.1.4 Temper (Section 8),5.1.5 Dimensions: diameter and wall thickness (whetherminimum or nominal), and length (Section 12),5.1.6 Total number of pieces of each size, and5.1.7 How furnished, whether in straight lengths or coils.5.2 The following options are availab
11、le and, when required,are to be specified at the time of placing of the order:5.2.1 Whether further finish processing of welded tube isneeded (6.2.2.1),5.2.2 Hydrostatic test (11.2),5.2.3 Pneumatic test (11.3),5.2.4 Certification (Section 20), and5.2.5 Mill test report (Section 21).6. Materials and
12、Manufacture6.1 Material:1This specification is under the jurisdiction of ASTM Committee B05 on Copperand Copper Alloys and is the direct responsibility of Subcommittee B05.04 on Pipeand Tube.Current edition approved May 1, 2004. Published May 2004. Originallyapproved in 1971. Last previous edition a
13、pproved in 1998 as B 552 98e1.2For 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.3Withdrawn.1*A Summary of Chang
14、es 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.6.1.1 The material of manufacture shall be cast billets ofCopper Alloys UNS Nos. C70600, C71500, C71640, andC72200 as specified in the orde
15、ring information, and shall beof such quality and soundness as to be suitable for processinginto finished lengths or coils of tube to meet the propertiesprescribed herein.6.2 Manufacture:6.2.1 Seamless TubeThe product shall be manufacturedby such hot extrusion or piercing, and subsequent cold workin
16、gand annealing as to produce a uniform, seamless wroughtstructure in the finished product.6.2.2 Welded TubeThe product shall be manufacturedfrom cold rolled strip which is subsequently formed andwelded by an automatic welding process.6.2.2.1 As-welded tubes are permitted to have further pro-cessing
17、when agreement is established between the manufac-turer or supplier and purchaser.6.2.3 The product shall be cold worked and annealed asnecessary to meet properties of the temper specified.7. Chemical Composition7.1 The product shall conform to the chemical compositionrequirements specified in Table
18、 1 for the Copper Alloy UNSnumber designation specified in the ordering information.7.2 These composition limits do not preclude the presenceof other elements. When required, limits for unnamed elementsshall be established and analysis required by agreement be-tween the manufacture or supplier and p
19、urchaser.7.2.1 For copper alloys in which copper is specified as theremainder, copper may be taken as the difference between thesum of all the elements analyzed and 100 %.7.2.1.1 When all the elements in Table 1 are analyzed, theirsum shall be as shown in the following table:Copper Alloy UNS No. Cop
20、per Plus Named Elements, % minC70600 99.5C71500 99.5C71640 99.5C72200 99.88. Temper8.1 Tempers within this specification are as defined inClassification B 601.8.1.1 Seamless TubeThe product shall be furnished ineither the O61 (annealed), or the H55 (light drawn, lightcold-worked) temper, as specifie
21、d in the ordering information.8.1.2 Welded TubeThe product shall be furnished in eitherthe WO61 (welded and annealed) or the WC55 (welded andlight cold worked) temper as specified in the ordering infor-mation.8.2 Tubes shall conform to the tensile requirements shownin Table 2.9. Mechanical Property
22、Requirements9.1 Tensile Strength:9.1.1 The product shall conform with the tensile strengthrequirements prescribed in Table 2 for the temper, alloy andtype specified in the ordering information when tested inaccordance with Test Methods E 8.10. Performance Requirements10.1 Expansion Test Requirements
23、:10.1.1 Tube specimens selected for test shall withstand theexpansion shown in Table 3 at one end when tested inaccordance with Test Method B 153. The expanded tube shallshow no cracking or rupture visible to the unaided eye.10.2 Flattening Test Requirements:10.2.1 Tube specimens approximately 4 ft
24、(1.22 m) longshall be tested in the annealed condition by flattening ondifferent elements throughout the length. Each element shall beflattened by one stroke of a press. The term “flattened” shall beinterpreted as follows: a micrometer set at three times the wallthickness shall pass over the tube fr
25、eely throughout theflattened part except as the points where the change in elementof flattening takes place.10.2.1.1 For seamless tube the flattened elements shall notshow cracking or rupture visible to the unaided eye. Superficialruptures resulting from surface imperfections shall not be causefor r
26、ejection.10.2.1.2 For seam-welded tube, the weld shall be placed ina position of maximum bend for at least one fourth of theflattened elements. The flattened elements shall not showcracking or rupture visible to the unaided eye. If the tube hasTABLE 1 Chemical RequirementsElementComposition, %Copper
27、 Alloy UNS No.C70600 C71500 C71640 C72200Copper (incl silver) remainder remainder remainder remainderLead, max 0.05A0.05A0.05A0.05AIron 1.01.8 0.401.0 1.72.3 0.51.0Zinc, max 1.0A1.0A1.0A1.0ANickel (incl cobalt) 9.011.0 29.033.0 29.032.0 15.018.0Manganese 1.0 max 1.0 max 1.52.5 1.0Chromium . . . . .
28、. . . . 0.300.70Other named elementsAAAACopper + elements with specificlimits. . . . . . . . . 99.5 minAWhen the product is for subsequent welding applications and so specified bythe purchaser, zinc shall be 0.50 % max, lead 0.02 % max, phosphorus 0.02 %max, sulfur 0.02 max, and carbon 0.05 % max.TA
29、BLE 2 Tensile RequirementsCopper AlloyUNS No.TemperTensile Strength,min, ksi (MPa)Standard FormerC70600 O61 annealed 40 (275)W061 welded and annealed 40 (275)H55 light drawn, light cold worked 45 (310)WC55 welded and light cold worked 45 (310)C71500 O61 annealed 52 (360)WO61 welded and annealed 52 (
30、360)H55 light drawn, light cold worked 54 (370)WC55 welded and light cold worked 54 (370)C71640 O61 annealed 63 (435)WO61 welded and annealed 63 (435)H55 light drawn, light cold worked 75 (515)WC55 welded and light cold worked 75 (515)C72200 O61 annealed 45 (310)WO61 welded and annealed 45 (310)H55
31、light drawn, light cold worked 50 (345)WC55 welded and light cold worked 50 (345)B 552 98 (2004)2been further processed after welding and the weld cannot belocated, the test shall be performed in accordance with 10.2.1.10.3 Weld Quality Test Requirements:10.3.1 Seam WeldsConformance to the quality r
32、equire-ments of 13.3 shall be demonstrated at the welding job site bya 180 reverse-bend test. Specimens approximately 112 in.(38.1 mm) long containing the weld shall be sectioned alongthe longitudinal axis of the tube with the seam weld centered inone of the test sections. The sections containing th
33、e seam weldshall be flattened in a vise or equivalent tool before bending,and then bent 180 over a radius equal to three times thenominal tube wall thickness. The root of the weld shall belocated on the outside surface of the knuckle of the bend. Thereshall be no evidence of cracks or lack of penetr
34、ation in theweld. In cases in which the seam-welded tube is furtherprocessed, it may be difficult or impossible to locate the weld,and then this paragraph will not be a requirement.11. Nondestructive Test Requirements11.1 Electromagnetic (Eddy-Current) Test:11.1.1 Each tube shall be subjected to an
35、eddy-current test.Testing shall follow the procedures of Practice E 243.11.1.2 The provisions for the determination of “end-effect”in Practice E 243 shall not apply.11.1.3 When tested in accordance with Practice E 243, tubesthat do not actuate the signaling device of the testing unit shallbe conside
36、red as conforming to the requirements of the test.11.1.4 Either notch depth or drilled hold standards shall beused.11.1.4.1 Notch depth standards shall be 10 % of the wallthickness.11.1.4.2 Drilled hole standards shall be per Table X1.2 ofPractice E 243.11.2 Hydrostatic Test:11.2.1 When specified in
37、 the contract or purchase order,each tube shall stand, without showing evidence of leakage, aninternal hydrostatic pressure sufficient to produce a fiber stressof 7000 psi (48 MPa) as determined by the following equationfor thin hollow cylinders under tension. The tube need not besubjected to a pres
38、sure gage reading over 1000 psi (7 MPa)unless specifically stipulated in the contract or purchase order.P 5 2St/D 2 0.8t! (1)where:P = 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,
39、 psi (MPa).11.3 Pneumatic Test:11.3.1 When specified in the contract or purchase order,each tube shall be subjected to a minimum internal air pressureof 60 psig (415 kPa) for 5 s without showing evidence ofleakage.12. Dimensions, Mass, and Permissible Variations12.1 DiameterTubes to be furnished sha
40、ll range in outsidediameter, as specified, from58 to 114 in. (15.9 to 31.8 mm)inclusive. The diameter of the tubes shall not vary from thatspecified by more than the following amount as measured by“go” and “no go” gages:Specified Diameter,in. (mm)Tolerance, Plus and Minusin. (mm)To 1 (25.4) incl 0.0
41、04 (0.10)Over 1 to 1.250 (25.4 to 31.8) incl 0.005 (0.13)12.1.1 When tubes are supplied in coils for straightening atjobsite the above tolerances apply to the finished straightenedtubes.12.2 Wall ThicknessTubes shall be furnished as specified,with wall thicknesses in the range of 0.035 to 0.065 in.
42、(0.889to 1.65 mm), inclusive.12.2.1 The wall thickness at any point shall not be less thanthat specified except when tubes are specifically ordered to a“nominal” wall thickness. When tube is ordered to a “nominal”wall thickness the deviation of the wall thickness from “nomi-nal” shall not exceed 610
43、 % of the nominal wall thickness,expressed to the nearest 0.0005 in. (0.013 mm).12.2.2 The residual inner-bead reinforcement after removalat seam-weld areas shall not exceed 0.006 in. (0.15 mm) inheight.12.3 LengthThe lengths of the straight tubes shall not beless than that specified when measured a
44、t a temperature of20C but may exceed the specified value by the amounts givenin Table 4. For tube ordered in coils, the length may not be lessthan that specified.12.4 Squareness of CutThe departure from squareness ofthe end of any straight tube shall not exceed 0.016 in./in. (0.016mm/mm) of diameter
45、.12.5 Tubes furnished in straight lengths shall be reasonablystraight when inspected at the mill. The maximum curvatureTABLE 3 Expansion Test RequirementsCopper AlloyUNS No.Temper Expansion ofTube OutsideDiameter, % ofOriginal OutsideDiameterStandard FormerC70600 O61 annealed 30W061 welded and annea
46、led 30H55 light drawn, light cold worked 15WC55 welded and light cold worked 15C71500 O61 annealed 30WO61 welded and annealed 30H55 light drawn, light cold worked 15WC55 welded and light cold worked 15C71640 O61 annealed 30WO61 welded and annealed 30H55 light drawn, light cold worked 15WC55 welded a
47、nd light cold worked 15C72200 O61 annealed 30WO61 welded and annealed 30H55 light drawn, light cold worked 15WC55 welded and light cold worked 15TABLE 4 Length ToleranceSpecified Length Tolerance, All Plusft (m) in. (mm)Up to 15 (4.9) incl332 (2.4)Over 15 to 20, incl (4.96.6) incl18 (3.2)Over 20 to
48、30, incl (6.69.8) incl532 (4.0)Over 30 to 60, incl (9.919.7) incl38 (9.5)Over 60 to 100, incl (19.732.8) incl12 (12.7)B 552 98 (2004)3(depth of arc in inches) shall not exceed14 in. (6.35 mm) in any3-ft (0.914-m) length, except for the 3 ft (0.914 m) at the endsof individual tubes, where departure f
49、rom straightness shall notexceed12 in. (13 mm).13. Workmanship, Finish and Appearance13.1 The product shall be clean and free from defects, butblemishes of a nature that do not interfere with the intendedapplication are acceptable. Annealed temper tubes may have adull iridescent film on both the inside and outside surface, anddrawn temper tubes may have a superficial film of drawinglubricant on the surfaces.13.2 Minor dents having a rounded contour that does notexceed 0.030 in. (0.76 mm) in depth and permit passage of thetube at the dented poi
