1、Designation: B775 15B775/B775M 16Standard Specification forGeneral Requirements for Nickel and Nickel Alloy WeldedPipe1This standard is issued under the fixed designation B775;B775/B775M; the number immediately following the designation indicates theyear of original adoption or, in the case of revis
2、ion, the year of last revision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification contains various requirements that, with the exception of Section 5 and Section 1
3、0, are mandatoryrequirements to the following ASTM nickel and nickel alloy, longitudinally welded piping specifications:2Title of SpecificationASTMDesignation2Welded UNS N08020, N08024, and N08026 Alloy Pipe B464/B464MWelded UNS N08020 Alloy Pipe B464/B464MWelded Nickel-Iron-Chromium Alloy Pipe B514
4、Welded Nickel-Chromium-Iron-Alloy (UNS N06600,UNS N06603, UNS N06025 and UNS N06045) PipeB517Welded Nickel and Nickel-Cobalt Alloy Pipe B619/B619MUNS N08904, UNS N08925, and UNS N08926 Welded Pipe B673UNS N08367 Welded Pipe B675Nickel-Alloy (UNS N06625, N06219, and N08825) WeldedPipeB705Ni-Cr-Mo-Co-
5、W-Fe-Si Alloy (UNS N06333) Welded Pipe B723Welded Nickel (UNS 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
6、requirement of the product specification and a requirement of this general specification, onlythe requirement of the product specification needs to be satisfied.1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values given inparentheses are
7、mathematical conversions to SI units that are provided for information only and are not considered stated in eachsystem may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from thetwo systems may result in non-conformance with the standard.
8、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 Safety Data Sheet(SDS) for this product/material as provid
9、ed 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:2B168 Specification for Nickel-Chromium-Iron Alloys (UNS N06600, N06601, N06603, N06690, N06693, N06025, N0604
10、5,and N06696), Nickel-Chromium-Cobalt-Molybdenum Alloy (UNS N06617), and Nickel-Iron-Chromium-Tungsten Alloy(UNS N06674) Plate, Sheet, and StripB464/B464M Specification for Welded UNS N08020 Alloy PipeB514 Specification for Welded Nickel-Iron-Chromium Alloy Pipe1 This specification is under the juri
11、sdiction ofASTM Committee B02 on Nonferrous Metals andAlloys and is the direct responsibility of Subcommittee B02.07 on RefinedNickel and Cobalt and Their Alloys.Current edition approved Oct. 1, 2015May 1, 2016. Published December 2015June 2016. Originally approved in 1987. Last previous edition app
12、roved in 20132015 asB775 13.B775 15. DOI: 10.1520/B0775-15.10.1520/B0775_B0775M-16.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary pag
13、e 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 made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that u
14、sers 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 Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Cons
15、hohocken, PA 19428-2959. United States1B517 Specification for Welded Nickel-Chromium-Iron-Alloy (UNS N06600, UNS N06603, UNS N06025, and UNS N06045)PipeB619/B619M Specification for Welded Nickel and Nickel-Cobalt Alloy PipeB673 Specification for UNS N08925, UNS N08354, and UNS N08926 Welded PipeB675
16、 Specification for UNS N08367 Welded PipeB705 Specification for Nickel-Alloy (UNS N06625, N06219 and N08825) Welded PipeB723 Specification for Nickel-Chromium-Molybdenum-Cobalt-Tungsten-Iron-Silicon Alloy (UNS N06333) Welded PipeB725 Specification for Welded Nickel (UNS N02200/UNS N02201) and Nickel
17、 Copper Alloy (UNS N04400) PipeB880 Specification for General Requirements for Chemical Check Analysis Limits for Nickel, Nickel Alloys and Cobalt AlloysB899 Terminology Relating to Non-ferrous Metals and AlloysE8 Test Methods for Tension Testing of Metallic MaterialsE18 Test Methods for Rockwell Ha
18、rdness 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 Determinin
19、g Average 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 AlloysE527 Practice for Numbering Metals and Alloys in the Unified Num
20、bering System (UNS)E571 Practice for Electromagnetic (Eddy-Current) Examination of Nickel 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
21、 Stainless Steel Pipe2.3 Other Documents:5ASME Boiler and Pressure Vessel Code Section IX Welding and Brazing Qualifications2.4 SAE:6SAE J 1086 Practice for Numbering Metals and Alloys (UNS)3. Terminology3.1 Definitions:Definitions Definitions for terms defined in Terminology B899 shall apply unless
22、 otherwise defined by therequirements of this document.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 thickness.3.1.
23、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 determined in accor
24、dance 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 requirements fo
25、r the ladle analysis within the tolerance limitsprescribed in Specification B880.5. Test Requirements5.1 Flattening Test:3 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
26、 York, NY 10036, http:/www.ansi.org.5 Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990, http:/www.asme.org.6 Available from SAE International (SAE), 400 Commonwealth Dr., Warrendale, PA 15096, http:/www.sae.org.
27、B775/B775M 1625.1.1 A length of pipe not less than 4 in. (102 mm),102 mm, shall be flattened under a load applied gradually at roomtemperature until the distance between the platens is five times the wall thickness. The weld shall be positioned 90 from thedirection of the applied flattening force.5.
28、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 Test:5.2.1 For welded pipe made either with or without the addition of filler and at the option of the manufacturer,
29、the transverseguided bend weld test may be substituted in lieu of the flattening test. Two bend test specimens shall be taken transversely frompipe or the test specimens may be taken from a test plate of the same material and heat as the pipe, which is attached to the endof the cylinder and welded a
30、s a prolongation of the pipe longitudinal seam. Except as provided in 5.2.2, one shall be subject toa face guided bend test and a second to a root guided bend test. One specimen shall be bent with the inside surface of the pipeagainst the plunger and the other with the outside surface of the pipe ag
31、ainst the plunger. Guided bend test specimens shall beprepared and tested in accordance with Section IX, Part QW, Paragraph QW 160 of the ASME Boiler and Pressure Vessel Codeand 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)10 mm but less tha
32、n 34 in. (19 mm)19 mm side bend tests may be madeinstead of the face and root bend tests. For specified wall thicknesses 34 in. 19 mm and over, both specimens shall be subjectedto the side bend tests. Side bend specimens shall be bent so that one of the side surfaces becomes the convex surface of th
33、e bendspecimen.5.2.3 The bend test shall be acceptable if no cracks or other defects exceeding 18 in. (3 mm)3 mm in any direction be presentin the weld metal or between the weld and the pipe or plate metal after bending. Cracks which originate along the edges of thespecimen during testing, and that
34、are less than 14 in. (6.5 mm)6 mm measured in any direction shall not be considered.5.3 Pressure (Leak Test):5.3.1 HydrostaticEach pipe shall be tested by the manufacturer to a minimum internal hydrostatic pressure of 1000 psi (6.9MPa)7 MPa provided that the fiber stress, calculated from the followi
35、ng equation, does not exceed the allowable fiber stress forthe material:P 52St/D (1)B775/B775M 163where:P = hydrostatic test pressure, psi (MPa),P = hydrostatic test pressure, psi MPa),S = allowable fiber stress, for material in the condition (temper) furnished as specified in the product specificat
36、ion (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 thickness permitted, in. (mm), including minus tolerance, if any, andt = minimum wall thickness permitted, in. mm, including
37、minus tolerance, if any, andD = nominal outside diameter of the pipe, in. (mm).D = nominal outside diameter of the pipe, in. mm.5.3.1.1 The test pressure 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
38、shall be tested at a pressure of 150 psi (1.05 MPa).1 MPa.The test pressureshall be held for a minimum of 5 s. Visual examination is to be made when the material is submerged and under pressure. Thefull length of pipe must be examined for leaks.5.3.3 If any pipe shows leaks during hydrostatic or pne
39、umatic testing, it shall be rejected.5.4 Nondestructive Electric Test:5.4.1 Eddy Current TestingTesting shall be conducted in accordance with Practices E426 or E571. The eddy currentexamination reference in this specification has the capability of detecting significant discontinuities, especially of
40、 the short, abrupttype.5.4.1.1 Unless otherwise specified by the purchaser, the calibration standard shall contain, at the option of the manufacturer, anyone of the following discontinuities to establish a minimum sensitivity level for rejection. The discontinuity shall be placed in theweld if visib
41、le.5.4.1.2 Drill HoleA hole not larger than 0.031 in. (0.79 mm)0.8 mm diameter shall be drilled radially and completelythrough the wall, care being taken to avoid distortion of the material while drilling.5.4.1.3 Transverse Tangential NotchUsing a round file or tool with a 14 in. (6 mm)6 mm diameter
42、, a notch shall be filed ormilled on the pipe outside diameter tangential to the surface and transverse to the longitudinal axis of the material. Said notch shallhave a depth not exceeding 12.5 % of the specified wall thickness of the material, or 0.004 in. (0.10 mm),0.10 mm, whicheveris greater.5.4
43、.2 Ultrasonic TestingTesting shall be conducted in accordance with Practice E213. The ultrasonic examination referred toin this specification is intended to detect longitudinal discontinuities having a reflective area similar to or larger than the calibrationreference notches specified in 5.4.2.1. T
44、he examination may not detect circumferentially oriented imperfections or short, deepdefects.5.4.2.1 For ultrasonic testing, longitudinal calibration notches shall be machined on the outside and inside diameter surfaces.The depth of the notches shall not exceed 12.5 % of the specified wall thickness
45、 or 0.004 in. (0.10 mm),0.10 mm, whichever isgreater. The notch shall be placed in the weld, if visible.5.4.3 Calibration FrequencyThe frequency of calibration checks 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 e
46、nd of each production run.5.4.3.4 After any suspected equipment malfunction or work stoppage.5.4.3.5 If, during any check, the equipment fails to detect the calibration defects, the instrument must be recalibrated and allmaterial tested since the last satisfactory check shall be retested.5.4.4 Accep
47、tance 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 imperfections that cannot be identified or that are produced by cracks or crack-likeimperfections shall result in rejection of the pip
48、e, 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 thickness requirements are met. To be accepted, retested material shall meet the original electric test requirements.5.4.4.3 I
49、f 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 providing 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 TestHardness testing shall be conducted in accordance with Tes
