1、Designation: B725 05 (Reapproved 2014)Standard Specification forWelded Nickel (UNS N02200/UNS N02201) and NickelCopper Alloy (UNS N04400) Pipe1This standard is issued under the fixed designation B725; the number immediately following the designation indicates the year oforiginal adoption or, in the
2、case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers nickel (UNS N02200) and lowcarbon nickel (UNS N02201 and UNS N
3、04400) in the 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 B36.19 (see
4、 Table 1). Pipehaving 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 standard. The values given in parentheses are mathematicalconversions to SI units that are provided for
5、information onlyand are not considered standard.1.4 The following precautionary caveat pertains only to thetest methods portion, Section 12, of this specification: Thisstandard does not purport to address all of the safety problems,if any, associated with its use. It is the responsibility of the use
6、rof this standard to become familiar with all hazards includingthose identified in the appropriate Material Safety Data Sheet(MSDS) for this product/material as provided by themanufacturer, to establish appropriate safety and healthpractices, and determine the applicability of regulatory limi-tation
7、s prior to use.2. Referenced Documents2.1 ASTM Standards:2E8 Test Methods for Tension Testing of Metallic MaterialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE39 Methods for Chemical Analysis of Nickel (Withdrawn1995)3E213 Practice for Ultrasoni
8、c Testing of Metal Pipe andTubingE571 Practice for Electromagnetic (Eddy-Current) Examina-tion of Nickel and Nickel Alloy Tubular Products2.2 ANSI Standards:4B 1.20.1 Pipe ThreadsB 36.10 Welded and Seamless Wrought Steel PipeB 36.19 Stainless Steel Pipe2.3 ASME Boiler and Pressure Vessel Code5Sectio
9、n 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 of issue,3.1.3 Condition (temper) (Table 2),3.1.4 Dimensions:3.1.4.1 Nominal pipe size
10、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 required (Sec-tion 15),3.1.7 Samples for Product (Check) AnalysisState whethersamples for prod
11、uct (check) analysis should be furnished (9.2),3.1.8 Purchaser InspectionIf the purchaser wishes towitness tests or inspection of material at the place ofmanufacture, the purchase order must so state indicating whichtests or inspections are to be witnessed (Section 13),3.1.9 Nondestructive Tests (se
12、e 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 Test1This specification is under the jurisdiction of ASTM Committee B02 onNonferrous Metals and Alloys and is the direct responsibility of Subcomm
13、itteeB02.07 on Refined Nickel and Cobalt and Their Alloys.Current edition approved Oct. 1, 2014. Published October 2014. Originallyapproved in 1983. Last previous edition approved in 2009 as B725 05 (2009).DOI: 10.1520/B0725-05R14.2For referenced ASTM standards, visit the ASTM website, www.astm.org,
14、 orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from American National Standards In
15、stitute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.5Available from American Society of Mechanical Engineers (ASME), ASMEInternational Headquarters, Three Park Ave., New York, NY 10016-5990, http:/www.asme.org.*A Summary of Changes section appears at the end of this stan
16、dardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1Category 2 is required, specify if either an eddy-current orultrasonic test is to apply. See Section S1.3.1.10 Supplementary Requirements.4. Materials and Manufacture4.1 Pipe shall b
17、e 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 shallbe cold worked to assure that optimum corrosion resistance inthe weld area and base metal will be developed during heattreatment.4.
18、2 Pipe shall be furnished with a scale free finish. Whenbright 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 m
19、aterial shall conform to the product (check)analysis variations in Table 3.TABLE 1 Dimensions of Welded PipeNOTE 1The following table is a partial reprint of Table 1 of ANSI B36.19.NOTE 2The decimal thicknesses listed for the respective pipe size represent their nominal wall dimensions.NominalPipe S
20、ize, 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 . . 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 0.06
21、5 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 0.109 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
22、 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 2.108 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 1
23、41.30 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 3.40 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
24、 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 22.000 558.80 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
25、.312 7.92 . . . .ASchedules 5S and 10S wall thicknesses do not permit threading in accordance with ANSI B1.20.1.BThese do not conform to ANSI B36.10.TABLE 2 Mechanical Properties of Pipe and TubeCondition andSizeTensile Strength,min, psi (MPa)Yield Strength (0.2 % offset),min, psi (MPa)Elongation in
26、 2 in.or 50 mm (or 4D),min, %NickelLow-CarbonNickelUNSN04400NickelLow-CarbonNickelUNSN04400NickelLow-CarbonNickelUNSN04400Annealed5 in. (127mm)and underoutside di-ameter55 000 (380) 50 000 (345) 70 000 (480) 15 000 (105) 12 000 (80) 28 000 (195) 35 35 35Over 5 in.(127 mm)in outsidediameter55 000 (38
27、0) 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 15B725 05 (2014)26. Mechanical Properties and Other Requirements6.1 Mechanical PropertiesThe material shall conform t
28、othe requirements for mechanical properties prescribed in Table2.6.2 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 Nondes
29、tructive Tests:6.4.1 Pipe shall be subjected to the nondestructive 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 edd
30、y-current or ultra-sonic test at the manufacturers option unless 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 te
31、sted in accordance with therequirements of 12.4, any pipe that 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 pr
32、oduced by imperfections that cannotbe identified or produced by 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
33、 are met.6.4.3.2 If the imperfection is judged as injurious, the pipeshall be rejected but may be reconditioned and retestedproviding the dimensional requirements are met. To beaccepted, retested pipe shall meet the original electric testrequirements.6.4.3.3 If the imperfection is explored to the ex
34、tent that itcan be identified as noninjurious, the pipe may be 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
35、.1 Pipe having a specified wall thickness that is 3 % orless 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 moret
36、han 61212 %.7.3 StraightnessMaterial shall be reasonably straight 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, commercia
37、lly straight, and free of injurious imperfec-tions.TABLE 3 Chemical RequirementsElementComposition, %Product (Check) AnalysisVariations, 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 0.60Coppe
38、r, 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 . 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 Ou
39、tside 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) 0.8Over 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.
40、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, 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. They app
41、lyto cut lengths up to and including 24 ft (7.3 m). For lengths over 24 ft, an additionalover-tolerance of18 in. (3.18 mm) for each 10 ft (3.0 m) or fraction thereof shall bepermissible up to a maximum additional over-tolerance of12 in. (12.7 mm).B725 05 (2014)39. Sampling9.1 Lots of Chemical Analys
42、is 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(temper).9.2 Test Material Select
43、ion.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.9.2.2 Mechanical Properties and Flattening TestingSamples of the material to provide test specimens shall beta
44、ken from such locations in each lot as to be representative ofthat lot.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 Preparation
45、11.1 Tension test specimens shall be taken from material inthe final 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
46、the event ofdisagreement when full-tubular testing is not possible, alongitudinal strip specimen with reduced gage length in accor-dance with Test Methods E8 shall be used.12. Test Methods12.1 The chemical composition, mechanical, and otherproperties of the material as enumerated in this specificati
47、onshall be determined, in case of disagreement, in accordancewith the following methods.Test ASTM DesignationChemical Analysis E39Tension E8Rounding procedure E2912.2 For purposes of determining compliance with thelimits in this specification, an observed value or a calculatedvalue shall be rounded
48、in accordance with the rounding methodof Practice E29:TestRounded 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
49、MPa)Elongation nearest 1 %12.3 Flattening TestPipe shall be capable 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 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 =
