1、Designation: B 725 05Standard Specification forWelded Nickel (UNS N02200/UNS N02201) and NickelCopper Alloy (UNS N04400) Pipe1This standard is issued under the fixed designation B 725; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision
2、, 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 nickel (UNS N02200) and lowcarbon nickel (UNS N02201 and UNS N04400) in the
3、form ofwelded and annealed or welded and stress relieved pipeintended for general corrosive service and for mechanicalapplications.1.2 This specification covers outside diameter and nominalwall pipe in Schedules 5S, 10S, and 40S through 30-in.nominal pipe size shown in ANSI B 36.19 (see Table 1). Pi
4、pehaving other dimensions may be furnished provided such pipecomplies with all other requirements of this specification.1.3 The values stated in inch-pound units are to be regardedas the standard.1.4 The following precautionary caveat pertains only to thetest methods portion, Section 12, of this spe
5、cification: Thisstandard does not purport to address all of the safety problems,if any, associated with its use. It is the responsibility of the userof this standard to become familiar with all hazards includingthose identified in the appropriate Material Safety Data Sheetfor this product/material a
6、s provided by the manufacturer, toestablish appropriate safety and health practices, and deter-mine the applicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2E8 Test Methods for Tension Testing of Metallic MaterialsE29 Practice for Using Significant Digits i
7、n Test Data toDetermine Conformance with SpecificationsE 213 Practice for Ultrasonic Examination of Metal Pipeand TubingE 571 Practice for Electromagnetic (Eddy-Current) Exami-nation of Nickel and Nickel Alloy Tubular Products2.2 ANSI Standards:3B 1.20.1 Pipe ThreadsB 36.10 Welded and Seamless Wroug
8、ht Steel PipeB 36.19 Stainless Steel Pipe2.3 ASME Boiler and Pressure Vessel Code4Section IX Welding and Brazing Qualifications3. Ordering Information3.1 Orders for material under this specification shall includethe following information:3.1.1 Alloy name or UNS number,3.1.2 ASTM designation and date
9、 of issue,3.1.3 Condition (temper) (Table 2),3.1.4 Dimensions:3.1.4.1 Nominal pipe size or outside diameter and schedulenumber or nominal wall thickness (Table 1),3.1.4.2 Length (specific or random),3.1.5 Quantityfeet or metres, or number of pieces,3.1.6 CertificationState if certification is requir
10、ed (Sec-tion 15),3.1.7 Samples for Product (Check) AnalysisState whethersamples for product (check) analysis should be furnished (9.2),3.1.8 Purchaser InspectionIf the purchaser wishes towitness tests or inspection of material at the place of manu-facture, the purchase order must so state indicating
11、 which testsor inspections are to be witnessed (Section 13),3.1.9 Nondestructive Tests (see 6.4)Specify either TestCategory 1 or 2. If Test Category 1 is required, specify if eithera hydrostatic, eddy-current or ultrasonic test is to apply. If TestCategory 2 is required, specify if either an eddy-cu
12、rrent orultrasonic test is to apply. See Section S1.3.1.10 Supplementary Requirements.4. Materials and Manufacture4.1 Pipe shall be made from flat-rolled alloy by an auto-matic welding process with no addition of filler metal. Subse-quent to welding and prior to final heat treatment, the pipe shall1
13、This specification is under the jurisdiction of ASTM Committee B02 onNonferrous Metals and Alloys and is the direct responsibility of SubcommitteeB02.07 on Refined Nickel and Cobalt and Their Alloys.Current edition approved May 1, 2005. Published June 2005. Originallyapproved in 1983. Last previous
14、edition approved in 2003 as B 725 93 (2003)e1.2For 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
15、 American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036.4Available from American Society of Mechanical Engineers (ASME), ASMEInternational Headquarters, Three Park Ave., New York, NY 10016-5990.1*A Summary of Changes section appears at the end of this standard.Cop
16、yright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.be cold worked to assure that optimum corrosion resistance inthe weld area and base metal will be developed during heattreatment.4.2 Pipe shall be furnished with a scale free finish. Whenbr
17、ight annealing is used, descaling is not necessary.5. Chemical Composition5.1 The material shall conform to the requirements as tochemical composition prescribed in Table 3.5.2 If a product (check) analysis is performed by thepurchaser, the material shall conform to the product (check)analysis varia
18、tions in Table 3.6. Mechanical Properties and Other Requirements6.1 Mechanical PropertiesThe material shall conform tothe requirements for mechanical properties prescribed in Table2.TABLE 1 Dimensions of Welded PipeNOTE 1The following table is a partial reprint of Table 1 of ANSI B 36.19.NOTE 2The d
19、ecimal thicknesses listed for the respective pipe size represent their nominal wall dimensions.NominalPipe Size, in.OutsideDiameterNominal Wall ThicknessSchedule5SASchedule10SASchedule40SSchedule80Sin. mm in. mm in. mm in. mm in. mm18 0.405 10.29 . . 0.049 1.245 0.068 1.727 0.095 2.4114 0.540 13.72
20、. . 0.065 1.651 0.088 2.235 0.119 3.0238 0.675 17.15 . 0.065 1.651 0.091 2.311 0.126 3.2012 0.840 21.34 0.065 1.651 0.083 2.108 0.109 2.768 0.147 3.7334 1.050 26.67 0.065 1.651 0.083 2.108 0.113 2.870 0.154 3.911 1.315 33.40 0.065 1.651 0.109 2.768 0.133 3.378 0.179 4.55114 1.660 42.16 0.065 1.651 0
21、.109 2.768 0.140 3.556 0.191 4.85112 1.900 48.26 0.065 1.651 0.109 2.768 0.145 3.683 0.200 5.082 2.375 60.33 0.065 1.651 0.109 2.768 0.154 3.912 0.218 5.54212 2.875 73.03 0.083 2.108 0.120 3.048 0.203 5.156 0.276 7.013 3.500 88.90 0.083 2.108 0.120 3.048 0.216 5.486 0.300 7.62312 4.000 101.6 0.083 2
22、.108 0.120 3.048 0.226 5.740 0.318 8.084 4.500 114.3 0.083 2.108 0.120 3.048 0.237 6.020 0.337 8.565 5.563 141.30 0.109 2.77 0.134 3.40 0.258 6.55 0.375 9.526 6.625 168.28 0.109 2.77 0.134 3.40 0.280 7.11 0.432 10.978 8.625 219.08 0.109 2.77 0.148 3.76 0.322 8.18 0.500 12.7010 10.750 273.05 0.134 3.
23、40 0.165 4.19 0.365 9.27 0.500B12.70B12 12.750 323.85 0.156 3.96 0.180 4.57 0.375B9.52B0.500B12.70B14 14.000 355.60 0.156 3.96 0.188B4.78B. . . . . .16 16.000 406.40 0.165 4.19 0.188B4.78B. . . .18 18.000 457.20 0.165 4.19 0.188B4.78B. . . .20 20.000 508.00 0.188 4.78 0.218B5.54B. . . .22 22.000 558
24、.80 0.188 4.78 0.218B5.54B. . . .24 24.000 609.60 0.218 5.54 0.250 6.35 . . . .30 30.000 762.00 0.250 6.35 0.312 7.92 . . . .ASchedules 5S and 10S wall thicknesses do not permit threading in accordance with ANSI B 1.20.1.BThese do not conform to ANSI B 36.10.TABLE 2 Mechanical Properties of Pipe and
25、 TubeCondition andSizeTensile Strength,min, psi (MPa)Yield Strength (0.2 % offset),min, psi (MPa)Elongation in 2 in.or 50 mm (or 4D),min, %NickelLow-CarbonNickelUNSN04400NickelLow-CarbonNickelUNSN04400NickelLow-CarbonNickelUNSN04400Annealed5 in. (127mm)and underoutside di-ameter55 000 (380) 50 000 (
26、345) 70 000 (480) 15 000 (105) 12 000 (80) 28 000 (195) 35 35 35Over 5 in.(127 mm)in outsidediameter55 000 (380) 50 000 (345) 70 000 (480) 12 000 (80) 10 000 (70) 25 000 (170) 40 40 35Stress-relievedAll sizes 65 000 (450) 60 000 (415) 85 000 (585) 40 000 (275) 30 000 (205) 55 000 (380) 15 15 15B7250
27、526.2 Flattening Test RequirementsFlattening test speci-mens made in accordance with 12.3 shall show no cracks orbreaks on the inside, outside, or end surfaces.6.3 Transverse Guided Bend TestSee 12.6.3 for accep-tance criteria.6.4 Nondestructive Tests:6.4.1 Pipe shall be subjected to the nondestruct
28、ive testsoutlined in the following test categories.6.4.1.1 Category 1Hydrostatic, eddy-current, or ultra-sonic test at the manufacturers option unless the purchaserspecifies in accordance with 3.1.9.6.4.1.2 Category 2Hydrostatic plus eddy-current or ultra-sonic test at the manufacturers option unles
29、s the purchaserspecifies in accordance with 3.1.9.6.4.1.3 The manufacturer shall have the option to use TestCategory 1 or 2 if the purchaser does not specify the testcategory options in accordance with 3.1.9.6.4.2 Hydrostatic TestWhen tested in accordance with therequirements of 12.4, any pipe that
30、leaks shall be rejected. Anyleaking area may be cut out and the pipe retested.6.4.3 Acceptance and RejectionPipe producing a signalequal to or greater than the calibration imperfection shall besubject to rejection.6.4.3.1 Test signals produced by imperfections that cannotbe identified or produced by
31、 cracks or crack-like imperfectionsshall result in rejection of the pipe subject to rework and retest.To be accepted, the pipe must pass the same electric test towhich it was originally subjected provided that the dimensionalrequirements are met.6.4.3.2 If the imperfection is judged as injurious, th
32、e pipeshall be rejected but may be reconditioned and retestedproviding the dimensional requirements are met. To be ac-cepted, retested pipe shall meet the original electric testrequirements.6.4.3.3 If the imperfection is explored to the extent that itcan be identified as noninjurious, the pipe may b
33、e acceptedwithout further test, providing the imperfection does notencroach on the minimum wall thickness.7. Dimensions and Permissible Variations7.1 The outside diameter shall not exceed the permissiblevariations prescribed in Table 4.7.1.1 Pipe having a specified wall thickness that is 3 % orless
34、of the outside diameter cannot be straightened properlywithout a certain amount of ovality resulting in the diameter.The limits to this ovality are stated in Footnote B of Table 4.7.2 The wall thickness shall not vary from nominal by morethan 6 1212 %.7.3 StraightnessMaterial shall be reasonably str
35、aight andfree of bends or kinks.7.4 LengthVariations from the specified length shall notexceed the amounts prescribed in Table 5.8. Workmanship, Finish, and Appearance8.1 The material shall be uniform in quality and temper,smooth, commercially straight, and free of injurious imperfec-tions.9. Sampli
36、ng9.1 Lots of Chemical Analysis and Mechanical Testing.9.1.1 A lot for chemical analysis shall consist of one heat.9.1.2 A lot for mechanical properties and flattening ortransverse guided bend testing shall consist of all material fromthe same heat, nominal size (excepting length), and condition(tem
37、per).9.2 Test Material Selection.9.2.1 Chemical AnalysisRepresentative samples shall betaken during pouring or subsequent processing.9.2.1.1 Product (check) analysis shall be wholly the respon-sibility of the purchaser.TABLE 3 Chemical RequirementsElementComposition, %Product (Check) AnalysisVariati
38、ons, under min orover max, of the SpecifiedLimit of ElementNickel (UNS N02200)Low-Carbon Nickel(UNS N02201)Nickel-Copper(UNS N04400)Nickel, min 99.0 99.0 63.0 0.60Copper, max 0.25 0.25 28.034.0 0.03Iron, max 0.40 0.40 2.5 0.03Manganese, max 0.35 0.35 2.0 0.03Carbon, max 0.15 . 0.3 0.01Carbon, max .
39、0.02 . 0.005Silicon, max 0.35 0.35 0.5 0.03Sulfur, max 0.01 0.01 0.024 0.003TABLE 4 Permissible Variations in Outside DiameterNPS DesignatorPermissible Variations in Outside DiameterOver Underin. mm in. mm18 to 112 , incl164 (0.015) 0.4132 (0.031) 0.8Over 112 to 4, incl132 (0.031) 0.8132 (0.031) 0.8
40、Over 4 to 8, incl116 (0.062) 1.6132 (0.031) 0.8Over 8 to 12, incl332 (0.093) 2.4132 (0.031) 0.8Over 18 to 26, incl18 (0.125) 3.2132 (0.031) 0.8Over 26 to 34, incl532 (0.156) 4.0132 (0.031) 0.8Over 34 to 48, incl316 (0.187) 4.8132 (0.031) 0.8TABLE 5 Permissible Variations in LengthAOutside Diameter,
41、in.(mm)Cut Length, in. (mm)Over UnderUnder 2 (50.8)18 (3.18) 02 (50.8) and over316 (4.75) 0AThese permissible variations in length apply to pipe before bending. Theyapply to cut lengths up to and including 24 ft (7.3 m). For lengths over 24 ft, anadditional over-tolerance of18 in. (3.18 mm) for each
42、 10 ft (3.0 m) or fractionthereof shall be permissible up to a maximum additional over-tolerance of12 in.(12.7 mm).B7250539.2.2 Mechanical Properties and Flattening TestingSamples of the material to provide test specimens shall betaken from such locations in each lot as to be representative ofthat l
43、ot.10. Number of Tests10.1 Chemical AnalysisOne test per lot.10.2 Mechanical PropertiesOne test per lot.10.3 Flattening or Transverse Guided Bend TestOne testper lot.10.4 NondestructiveEach piece in each lot.11. Specimen Preparation11.1 Tension test specimens shall be taken from material inthe final
44、 condition (temper) and tested in the direction offabrication.11.1.1 Whenever possible, all pipe shall be tested in full-tubular size. When testing in full-tubular size is not possible,longitudinal strip specimens shall be used. In the event ofdisagreement when full-tubular testing is not possible,
45、alongitudinal strip specimen with reduced gage length in accor-dance with Test Methods E8shall be used.12. Test Methods12.1 The chemical composition, mechanical, and otherproperties of the material as enumerated in this specificationshall be determined, in case of disagreement, in accordancewith the
46、 following methods.Test ASTM DesignationChemical Analysis E 39Tension E 8Rounding procedure E 2912.2 For purposes of determining compliance with thelimits in this specification, an observed value or a calculatedvalue shall be rounded in accordance with the rounding methodof Practice E29:TestRounded
47、Unit for Observedor Calculated ValueChemical composition and nearest unit in the last right-tolerances (when expressed hand place of figures of thein decimals). specified limit.Tensile strength and yieldstrength.nearest 1000 psi (6.9 MPa)Elongation nearest 1 %12.3 Flattening TestPipe shall be capabl
48、e of withstanding,without cracking, flattening under a load applied gradually atroom temperature until the distance between the platens is fivetimes the wall thickness. The weld shall be positioned 90 %from the direction of the applied flattening force.12.4 Hydrostatic TestEach pipe shall be tested
49、at a pres-sure calculated by the following equation:P 5 2St/D (1)where:P = hydrostatic test pressure, psi (or MPa),t = specified wall thickness, in. (or mm),D = specified outside diameter, in. (or mm), andS = allowable fiber stress for material in the conditionfurnished, as follows:Nickel-CopperNickelLow CarbonNickel(AllowableFiber Stress)Annealed5 in. (127 mm) outsidediameter and under10 000 psi(70 MPa)8000 psi(55 MPa)17 500 psi(120 MPa)Over 5 in. outsidediameter8000 psi(55 MPa)6700 psi(45 MPa)16 700 psi(115 MPa)NickelLow Car
