1、Designation: B775 08B775 13Standard Specification forGeneral Requirements for Nickel and Nickel Alloy WeldedPipe1This standard is issued under the fixed designation B775; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of
2、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. Scope Scope*1.1 This specification contains various requirements that, with the exception of Section 5 and Section 10, are mand
3、atoryrequirements to the following ASTM nickel and nickel alloy, longitudinally welded piping specifications:2Title of SpecificationASTMDesignation2Welded UNS N08020, N08024, and N08026 Alloy Pipe B464Welded Nickel-Iron-Chromium Alloy Pipe B514Welded Nickel-Chromium-Iron-Alloy (UNS N06600,UNS N06603
4、, UNS N06025 and UNS N06045) PipeB517Welded Nickel and Nickel-Cobalt Alloy Pipe B619UNS N08904, UNS N08925, and UNS N08926 Welded Pipe B673UNS N08367 Welded Pipe B675Nickel-Alloy (UNS N06625, N06219, and N08825) WeldedPipeB705Ni-Cr-Mo-Co-W-Fe-Si Alloy (UNS N06333) Welded Pipe B723Welded Nickel (UNS
5、N02200/UNS N02201) and NickelCopper Alloy (UNS N04400) PipeB7251.2 One or more of the test requirements of Section 5 apply only if specifically stated in the product specification or in thepurchase order.1.3 In case of conflict between a requirement of the product specification and a requirement of
6、this general specification, onlythe requirement of the product specification needs to be satisfied.1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not cons
7、idered standard.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to become familiar with all hazards including those identified in the appropriate Material Safety DataSheet (MSDS) for this
8、product/material as provided by the manufacturer, to establish appropriate safety and health practices, anddetermine the applicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2B464 Specification for Welded UNS N08020 Alloy PipeB514 Specification for Welded Ni
9、ckel-Iron-Chromium Alloy PipeB517 Specification for Welded Nickel-Chromium-Iron-Alloy (UNS N06600, UNS N06603, UNS N06025, and UNS N06045)PipeB619 Specification for Welded Nickel and Nickel-Cobalt Alloy PipeB673 Specification for UNS N08925, UNS N08354, and UNS N08926 Welded PipeB675 Specification f
10、or UNS N08367 Welded PipeB705 Specification for Nickel-Alloy (UNS N06625, N06219 and N08825) Welded Pipe1 This specification is under the jurisdiction ofASTM Committee B02 on Nonferrous Metals andAlloys and is the direct responsibility of Subcommittee B02.07 on RefinedNickel and Cobalt and Their All
11、oys.Current edition approved April 1, 2008Feb. 1, 2013. Published April 2008March 2013. Originally approved in 1987. Last previous edition approved in 20022008 asB775 02.B775 08. DOI: 10.1520/B0775-08. 10.1520/B0775-13.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactAS
12、TM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been mad
13、e to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A S
14、ummary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1B723 Specification for Nickel-Chromium-Molybdenum-Cobalt-Tungsten-Iron-Silicon Alloy (UNS N06333) Welded PipeB725 Specificati
15、on for Welded Nickel (UNS N02200/UNS N02201) and Nickel Copper Alloy (UNS N04400) PipeB880 Specification for General Requirements for Chemical Check Analysis Limits for Nickel, Nickel Alloys and Cobalt AlloysE8 Test Methods for Tension Testing of Metallic MaterialsE18 Test Methods for Rockwell Hardn
16、ess of Metallic MaterialsE29 Practice for Using Significant Digits in Test Data to Determine Conformance with SpecificationsE39 Methods for Chemical Analysis of Nickel (Withdrawn 1995)3E76 Test Methods for Chemical Analysis of Nickel-Copper Alloys (Withdrawn 2003)3E112 Test Methods for Determining A
17、verage Grain SizeE213 Practice for Ultrasonic Testing of Metal Pipe and TubingE426 Practice for Electromagnetic (Eddy-Current) Examination of Seamless and Welded Tubular Products, Titanium,AusteniticStainless Steel and Similar AlloysE571 Practice for Electromagnetic (Eddy-Current) Examination of Nic
18、kel and Nickel Alloy Tubular ProductsE1473 Test Methods for Chemical Analysis of Nickel, Cobalt, and High-Temperature 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 Sectio
19、n IX Welding and Brazing Qualifications3. Terminology3.1 Definitions:3.1.1 average diameter, nthe average of the maximum and minimum outside diameters, as determined at any one cross sectionof the pipe.3.1.2 nominal wall, na specified wall thickness with a plus or minus tolerance from the specified
20、thickness.3.1.3 welded pipe, na round hollow produced by forming flat stock and joining the single longitudinal seam by welding, andproduced to the particular dimensions commercially known as pipe sizes (NPS).4. Chemical Composition4.1 In case of disagreement, the chemical composition shall be deter
21、mined in accordance with the following methods:UNS No. Prefixes ASTM MethodN02 E39N04 E76N06, N08 E14734.2 The ladle analysis of the material shall conform to the chemical requirements prescribed by the individual productspecification.4.3 The product (check) analysis of the material shall meet the r
22、equirements for the ladle analysis within the tolerance limitsprescribed in Specification B880.5. Test Requirements5.1 Flattening Test:5.1.1 A length of pipe not less than 4 in. (102 mm), shall be flattened under a load applied gradually at room temperature untilthe distance between the platens is f
23、ive times the wall thickness. The weld shall be positioned 90 from the direction of the appliedflattening force.5.1.2 The flattened specimen shall not exhibit cracks.5.1.3 Superficial ruptures resulting from surface imperfections shall not be a cause for rejection.5.2 Transverse Guided-Bend Weld Tes
24、t:5.2.1 For welded pipe made with weld either with or without the addition of filler and at the option of the manufacturer, thetransverse guided bend weld test may be substituted in lieu of the flattening test. Two bend test specimens shall be takentransversely from pipe or the test specimens may be
25、 taken from a test plate of the same material and heat as the pipe, which isattached to the end of the cylinder and welded as a prolongation of the pipe longitudinal seam. Except as provided in 5.2.2, oneshall be subject to a face guided bend test and a second to a root guided bend test. One specime
26、n shall be bent with the inside3 The last approved version of this historical standard is referenced on www.astm.org.4 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:/www.ansi.org.5 Available from American Society of Mechanical Engine
27、ers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990, http:/www.asme.org.B775 132surface of the pipe against the plunger and the other with the outside surface of the pipe against the plunger. Guided bend testspecimens shall be prepared and tested in accordance with
28、Section IX, Part QW, Paragraph QW 160 of the ASME Boiler andPressure Vessel Code and shall be one of the types shown in QW 463.1 of that code.5.2.2 For wall thicknesses over 38 in. (9.5 mm) but less than 34 in. (19 mm) side bend tests may be made instead of the faceand root bend tests. For specified
29、 wall thicknesses 34 in. and over, both specimens shall be subjected to the side bend tests. Sidebend specimens shall be bent so that one of the side surfaces becomes the convex surface of the bend specimen.5.2.3 The bend test shall be acceptable if no cracks or other defects exceeding 18 in. (3 mm)
30、 in any direction be present in theweld metal or between the weld and the pipe or plate metal after bending. Cracks which originate along the edges of the specimenduring testing, and that are less than 14 in. (6.5 mm) measured in any direction shall not be considered.5.3 Pressure (Leak Test):5.3.1 H
31、ydrostaticEach pipe shall be tested by the manufacturer to a minimum internal hydrostatic pressure of 1000 psi (6.9MPa) provided that the fiber stress, calculated from the following equation, does not exceed the allowable fiber stress for thematerial:P 52St/D (1)where:P = hydrostatic test pressure,
32、psi (MPa),S = allowable fiber stress, for material in the condition (temper) furnished as specified in the product specification (S iscalculated as the lower of 23 of the specified minimum 0.2 % offset yield strength or 14 of the specified minimum ultimatestrength for the material),t = minimum wall
33、thickness permitted, in. (mm), including minus tolerance, if any, andD = nominal outside diameter of the pipe, in. (mm).where:P = hydrostatic test pressure, psi (MPa),S = allowable fiber stress, for material in the condition (temper) furnished as specified in the product specification (S iscalculate
34、d as the lower of 23 of the specified minimum 0.2 % offset yield strength or 14 of the specified minimum ultimatestrength for the material),t = minimum wall thickness permitted, in. (mm), including minus tolerance, if any, andD = nominal outside diameter of the pipe, in. (mm).5.3.1.1 The test pressu
35、re shall be held for a sufficient time to permit the entire length of the welded seam to be inspected.5.3.2 Pneumatic (Air Underwater Test)Each pipe shall be tested at a pressure of 150 psi (1.05 MPa). The test pressure shallbe held for a minimum of 5 s. Visual examination is to be made when the mat
36、erial is submerged and under pressure. The full lengthof pipe must be examined for leaks.5.3.3 If any pipe shows leaks during hydrostatic or pneumatic testing, it shall be rejected.5.4 Nondestructive Electric Test:5.4.1 Eddy Current TestingTesting shall be conducted in accordance with Practices E426
37、 or E571. The eddy currentexamination reference in this specification has the capability of detecting significant discontinuities, especially of the short, abrupttype.5.4.1.1 Unless otherwise specified by the purchaser, the calibration standard shall contain, at the option of the manufacturer, anyon
38、e of the following discontinuities to establish a minimum sensitivity level for rejection. The discontinuity shall be placed in theweld if visible.5.4.1.2 Drill HoleA hole not larger than 0.031 in. (0.79 mm) diameter shall be drilled radially and completely through thewall, care being taken to avoid
39、 distortion of the material while drilling.5.4.1.3 Transverse Tangential NotchUsing a round file or tool with a 14 in. (6 mm) diameter, a notch shall be filed or milledon the pipe outside diameter tangential to the surface and transverse to the longitudinal axis of the material. Said notch shall hav
40、ea depth not exceeding 12.5 % of the specified wall thickness of the material, or 0.004 in. (0.10 mm), whichever is greater.5.4.2 Ultrasonic TestingTesting shall be conducted in accordance with Practice E213. The ultrasonic examination referred toin this specification is intended to detect longitudi
41、nal discontinuities having a reflective area similar to or larger than the calibrationreference notches specified in 5.4.2.1. The examination may not detect circumferentially oriented imperfections or short, deepdefects.5.4.2.1 For ultrasonic testing, longitudinal calibration notches shall be machin
42、ed on the outside and inside diameter surfaces.The depth of the notches shall not exceed 12.5 % of the specified wall thickness or 0.004 in. (0.10 mm), whichever is greater. Thenotch shall be placed in the weld, if visible.5.4.3 Calibration FrequencyThe frequency of calibration checks shall be as fo
43、llows: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.B775 1335.4.3.4 After any suspected equipment malfunction or work stoppage.5.4.3.5 If, during any check, the equipment fails to detect the calibration defe
44、cts, the instrument must be recalibrated and allmaterial tested since the last satisfactory check shall be retested.5.4.4 Acceptance and RejectionMaterial producing a signal equal to or greater than the calibration defect shall be subject torejection.5.4.4.1 Test signals that are produced by imperfe
45、ctions that cannot be identified or that are produced by cracks or crack-likeimperfections shall result in rejection of the pipe, subject to rework and retest.5.4.4.2 If the imperfection is judged as not fit for use, the tube shall be rejected, but may be reconditioned and retested providingthe wall
46、 thickness requirements are met. To be accepted, retested material shall meet the original electric test requirements.5.4.4.3 If the imperfection is explored to the extent that it can be identified, and the pipe is determined to be fit for use, thematerial may be accepted without further testing pro
47、viding the imperfection does not encroach on minimum wall thicknessrequirements.5.5 Tension TestTension testing shall be conducted in accordance with Test Methods E8.5.5.1 The material shall conform to the tensile properties prescribed in the individual product specification.5.6 Hardness TestHardnes
48、s testing shall be conducted in accordance with Test Methods E18.5.7 Grain SizeThe measurement of average grain size may be carried out by the planimetric method, the comparison method,or the intercept method described in Test Methods E112. In case of dispute, the “referee” method for determining av
49、erage grainsize shall be the intercept method.5.8 For purposes of determining compliance with the specified limits for requirements of the properties listed in the followingtable, an observed value or a calculated value shall be rounded in accordance with the rounding method of Practice E29: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
