1、Designation: B 775 08Standard Specification forGeneral Requirements for Nickel and Nickel Alloy WeldedPipe1This standard is issued under the fixed designation B 775; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last
2、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. Scope1.1 This specification contains various requirements that,with the exception of Section 5 and Section 10, are mandatoryrequire
3、ments to the following ASTM nickel and nickel alloy,longitudinally welded piping specifications:2Title of SpecificationASTMDesignation2Welded UNS N08020, N08024, and N08026 Alloy Pipe B 464Welded Nickel-Iron-Chromium Alloy Pipe B 514Welded Nickel-Chromium-Iron-Alloy (UNS N06600,UNS N06603, UNS N0602
4、5 and UNS N06045) PipeB 517Welded Nickel and Nickel-Cobalt Alloy Pipe B 619UNS N08904, UNS N08925, and UNS N08926 Welded Pipe B 673UNS N08367 Welded Pipe B 675Nickel-Alloy (UNS N06625, N06219, and N08825) WeldedPipeB 705Ni-Cr-Mo-Co-W-Fe-Si Alloy (UNS N06333) Welded Pipe B 723Welded Nickel (UNS N0220
5、0/UNS N02201) and NickelCopper Alloy (UNS N04400) PipeB 7251.2 One or more of the test requirements of Section 5 applyonly if specifically stated in the product specification or in thepurchase order.1.3 In case of conflict between a requirement of the productspecification and a requirement of this g
6、eneral specification,only the requirement of the product specification needs to besatisfied.1.4 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 information onlyand are not considered st
7、andard.1.5 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to become familiarwith all hazards including those identified in the appropriateMaterial Safety Data Sheet (MSDS) for this product/mat
8、erialas provided by the manufacturer, to establish appropriatesafety and health practices, and determine the applicability ofregulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2B 464 Specification for Welded UNS N08020, N08024, andN08026 Alloy PipeB 514 Specification for W
9、elded Nickel-Iron-Chromium Al-loy PipeB 517 Specification for Welded Nickel-Chromium-Iron-Alloy (UNS N06600, UNS N06603, UNS N06025, andUNS N06045) PipeB 619 Specification for Welded Nickel and Nickel-CobaltAlloy PipeB 673 Specification for UNS N08925, UNS N08354, andUNS N08926 Welded PipeB 675 Spec
10、ification for UNS N08367 Welded PipeB 705 Specification for Nickel-Alloy (UNS N06625,N06219 and N08825) Welded PipeB 723 Specification for Nickel-Chromium-Molybdenum-Cobalt-Tungsten-Iron-Silicon Alloy (UNS N06333)Welded PipeB 725 Specification for Welded Nickel (UNS N02200/UNSN02201) and Nickel Copp
11、er Alloy (UNS N04400) PipeB 880 Specification for General Requirements for ChemicalCheck Analysis Limits for Nickel, Nickel Alloys andCobalt AlloysE8 Test Methods for Tension Testing of Metallic MaterialsE18 Test Methods for Rockwell Hardness of MetallicMaterialsE29 Practice for Using Significant Di
12、gits in Test Data toDetermine Conformance with SpecificationsE39 Test Methods for Chemical Analysis of Nickel3E76 Test Methods for ChemicalAnalysis of Nickel-CopperAlloys3E112 Test Methods for Determining Average Grain SizeE 213 Practice for Ultrasonic Examination of Metal Pipeand TubingE 426 Practi
13、ce for Electromagnetic (Eddy-Current) Exami-nation of Seamless and Welded Tubular Products, Austen-itic Stainless Steel and Similar Alloys1This specification is under the jurisdiction of ASTM Committee B02 onNonferrous Metals and Alloys and is the direct responsibility of SubcommitteeB02.07 on Refin
14、ed Nickel and Cobalt and Their Alloys.Current edition approved April 1, 2008. Published April 2008. Originallyapproved in 1987. Last previous edition approved in 2002 as B 775 02.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org.
15、 For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Withdrawn.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.Copyright by ASTM Intl (all rights reserved); Sat Jan 31
16、 22:15:46 EST 2009Downloaded/printed byGuo Dehua (CNIS) pursuant to License Agreement. No further reproductions authorized.E 571 Practice for Electromagnetic (Eddy-Current) Exami-nation of Nickel and Nickel Alloy Tubular ProductsE 1473 Test Methods for Chemical Analysis of Nickel,Cobalt, and High-Te
17、mperature Alloys2.2 ANSI Standards:4B1.20.1 Pipe ThreadsB36.10 Welded and Seamless Wrought Steel PipeB36.19 Stainless Steel Pipe2.3 Other Documents:5ASME Boiler and Pressure Vessel Code Section IX Welding and Brazing Qualifications3. Terminology3.1 Definitions:3.1.1 average diameter, nthe average of
18、 the maximumand minimum outside diameters, as determined at any onecross section of the pipe.3.1.2 nominal wall, na specified wall thickness with aplus or minus tolerance from the specified thickness.3.1.3 welded pipe, na round hollow produced by formingflat stock and joining the single longitudinal
19、 seam by welding,and produced to the particular dimensions commerciallyknown as pipe sizes (NPS).4. Chemical Composition4.1 In case of disagreement, the chemical composition shallbe determined in accordance with the following methods:UNS No. Prefixes ASTM MethodN02 E39N04 E76N06, N08 E 14734.2 The l
20、adle analysis of the material shall conform to thechemical requirements prescribed by the individual productspecification.4.3 The product (check) analysis of the material shall meetthe requirements for the ladle analysis within the tolerancelimits prescribed in Specification B 880.5. Test Requiremen
21、ts5.1 Flattening Test:5.1.1 A length of pipe not less than 4 in. (102 mm), shall beflattened under a load applied gradually at room temperatureuntil the distance between the platens is five times the wallthickness. The weld shall be positioned 90 from the directionof the applied flattening force.5.1
22、.2 The flattened specimen shall not exhibit cracks.5.1.3 Superficial ruptures resulting from surface imperfec-tions shall not be a cause for rejection.5.2 Transverse Guided-Bend Weld Test:5.2.1 For welded pipe made with weld filler and at theoption of the manufacturer, the transverse guided bend wel
23、dtest may be substituted in lieu of the flattening test. Two bendtest specimens shall be taken transversely from pipe or the testspecimens may be taken from a test plate of the same materialand heat as the pipe, which is attached to the end of thecylinder and welded as a prolongation of the pipe lon
24、gitudinalseam. Except as provided in 5.2.2, one shall be subject to a faceguided bend test and a second to a root guided bend test. Onespecimen shall be bent with the inside surface of the pipeagainst the plunger and the other with the outside surface of thepipe against the plunger. Guided bend test
25、 specimens shall beprepared and tested in accordance with Section IX, Part QW,Paragraph QW 160 of the ASME Boiler and Pressure VesselCode and shall be one of the types shown in QW 463.1 of thatcode.5.2.2 For wall thicknesses over38 in. (9.5 mm) but less than34 in. (19 mm) side bend tests may be made
26、 instead of the faceand root bend tests. For specified wall thicknesses34 in. andover, both specimens shall be subjected to the side bend tests.Side bend specimens shall be bent so that one of the sidesurfaces becomes the convex surface of the bend specimen.5.2.3 The bend test shall be acceptable if
27、 no cracks or otherdefects exceeding18 in. (3 mm) in any direction be present inthe weld metal or between the weld and the pipe or plate metalafter bending. Cracks which originate along the edges of thespecimen during testing, and that are less than14 in. (6.5 mm)measured in any direction shall not
28、be considered.5.3 Pressure (Leak Test):5.3.1 HydrostaticEach pipe shall be tested by the manu-facturer to a minimum internal hydrostatic pressure of 1000 psi(6.9 MPa) provided that the fiber stress, calculated from thefollowing equation, does not exceed the allowable fiber stressfor the material:P 5
29、 2St/D (1)where:P = hydrostatic test pressure, psi (MPa),S = allowable fiber stress, for material in the condition(temper) furnished as specified in the product specifi-cation (S is calculated as the lower of23 of thespecified minimum 0.2 % offset yield strength or14 ofthe specified minimum ultimate
30、 strength for the mate-rial),t = minimum wall thickness permitted, in. (mm), includ-ing minus tolerance, if any, andD = nominal outside diameter of the pipe, in. (mm).5.3.1.1 The test pressure shall be held for a sufficient time topermit the entire length of the welded seam to be inspected.5.3.2 Pne
31、umatic (Air Underwater Test)Each pipe shall betested at a pressure of 150 psi (1.05 MPa). The test pressureshall be held for a minimum of 5 s. Visual examination is to bemade when the material is submerged and under pressure. Thefull length of pipe must be examined for leaks.5.3.3 If any pipe shows
32、leaks during hydrostatic or pneu-matic testing, it shall be rejected.5.4 Nondestructive Electric Test:5.4.1 Eddy Current TestingTesting shall be conducted inaccordance with Practices E 426 or E 571. The eddy currentexamination reference in this specification has the capability ofdetecting significan
33、t discontinuities, especially of the short,abrupt type.4Available from American National Standards Institute (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
34、York, NY 10016-5990, http:/www.asme.org.B775082Copyright by ASTM Intl (all rights reserved); Sat Jan 31 22:15:46 EST 2009Downloaded/printed byGuo Dehua (CNIS) pursuant to License Agreement. No further reproductions authorized.5.4.1.1 Unless otherwise specified by the purchaser, thecalibration standa
35、rd shall contain, at the option of the manu-facturer, any one of the following discontinuities to establish aminimum sensitivity level for rejection. The discontinuity shallbe placed in the weld if visible.5.4.1.2 Drill HoleA hole not larger than 0.031 in. (0.79mm) diameter shall be drilled radially
36、 and completely throughthe wall, care being taken to avoid distortion of the materialwhile drilling.5.4.1.3 Transverse Tangential NotchUsing a round file ortool with a14 in. (6 mm) diameter, a notch shall be filed ormilled on the pipe outside diameter tangential to the surfaceand transverse to the l
37、ongitudinal axis of the material. Saidnotch shall have a depth not exceeding 12.5 % of the specifiedwall thickness of the material, or 0.004 in. (0.10 mm),whichever is greater.5.4.2 Ultrasonic TestingTesting shall be conducted inaccordance with Practice E 213. The ultrasonic examinationreferred to i
38、n this specification is intended to detect longitudi-nal discontinuities having a reflective area similar to or largerthan the calibration reference notches specified in 5.4.2.1. Theexamination may not detect circumferentially oriented imper-fections or short, deep defects.5.4.2.1 For ultrasonic tes
39、ting, longitudinal calibrationnotches shall be machined on the outside and inside diametersurfaces. The depth of the notches shall not exceed 12.5 % ofthe specified wall thickness or 0.004 in. (0.10 mm), whicheveris greater. The notch shall be placed in the weld, if visible.5.4.3 Calibration Frequen
40、cyThe frequency of calibrationchecks shall be as follows:5.4.3.1 At the beginning of each production run.5.4.3.2 At least every four hours during testing.5.4.3.3 At the end of each production run.5.4.3.4 After any suspected equipment malfunction or workstoppage.5.4.3.5 If, during any check, the equi
41、pment fails to detectthe calibration defects, the instrument must be recalibrated andall material tested since the last satisfactory check shall beretested.5.4.4 Acceptance and RejectionMaterial producing a sig-nal equal to or greater than the calibration defect shall besubject to rejection.5.4.4.1
42、Test signals that are produced by imperfections thatcannot be identified or that are produced by cracks or crack-like imperfections shall result in rejection of the pipe, subjectto rework and retest.5.4.4.2 If the imperfection is judged as not fit for use, thetube shall be rejected, but may be recon
43、ditioned and retestedproviding the wall thickness requirements are met. To beaccepted, retested material shall meet the original electric testrequirements.5.4.4.3 If the imperfection is explored to the extent that itcan be identified, and the pipe is determined to be fit for use,the material may be
44、accepted without further testing providingthe imperfection does not encroach on minimum wall thicknessrequirements.5.5 Tension TestTension testing shall be conducted inaccordance with Test Methods E8.5.5.1 The material shall conform to the tensile propertiesprescribed in the individual product speci
45、fication.5.6 Hardness TestHardness testing shall be conducted inaccordance with Test Methods E18.5.7 Grain SizeThe measurement of average grain sizemay be carried out by the planimetric method, the comparisonmethod, or the intercept method described in Test MethodsE112. In case of dispute, the “refe
46、ree” method for determiningaverage grain size shall be the intercept method.5.8 For purposes of determining compliance with the speci-fied limits for requirements of the properties listed in thefollowing table, an observed value or a calculated value shallbe rounded in accordance with the rounding m
47、ethod of PracticeE29:RequirementsRounded Unit for Observedor Calculated ValueChemical composition and tolerances nearest unit in the last right-handplace of figures of the specified limitTensile strength and yield strength nearest 1000 psi (7 MPa)Elongation nearest 1 %6. Dimensions and Permissible V
48、ariations6.1 Dimensions of pipe are shown in Table 1.6.1.1 Permissible variations in outside diameter and wallthickness are shown in Table 2.6.2 LengthWhen material is ordered as cut-to-length, thelength shall conform to the permissible variations prescribed inTable 3. When material is ordered to ra
49、ndom lengths, thelengths and variations shall be agreed upon between themanufacturer and purchaser.6.3 Straightness Material shall be reasonably straight andfree of bends and kinks.6.4 EndsEnds shall be reasonably square and free fromburrs.7. Workmanship, Finish, and Appearance7.1 The material shall be uniform in quality and temper,smooth, and free from imperfections that would render it unfitfor use.8. Sampling8.1 Lot Definition:8.1.1 A lot for chemical analysis shall consist of one heat.8.1.2 A lot for all other testing shall consist of all materialfro
