ASTM B474-2003 Standard Specification for Electric Fusion Welded Nickel and Nickel Alloy Pipe《电熔焊镍和镍合金管标准规范》.pdf
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1、Designation: B 474 03Standard Specification forElectric Fusion Welded Nickel and Nickel Alloy Pipe1This standard is issued under the fixed designation B 474; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision
2、. 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 covers electric fusion welded pipesuitable for high-temperature or corrosive service as listed inTable 1. (Alth
3、ough no restrictions are placed on the sizes ofpipe that may be furnished under this specification, commercialpractice is commonly limited to sizes not less than 8 in. (203mm) nominal diameter.)1.2 Five classes of pipe are covered as follows:1.2.1 Class 1Pipe shall be double welded by processesemplo
4、ying filler metal in all passes and shall be completelyradiographed.1.2.2 Class 2Pipe shall be double welded by processesemploying filler metal in all passes. No radiography is re-quired.1.2.3 Class 3Pipe shall be single welded by processesemploying filler metal in all passes and shall be completely
5、radiographed.1.2.4 Class 4Same as Class 3 except that the weld passexposed to the inside pipe surface may be made without theaddition of filler metal.1.2.5 Class 5Pipe shall be double welded by processesemploying filler metal in all passes and shall be spot radio-graphed.1.3 The values stated in inc
6、h-pound units are to be regardedas the standard. The values given in parentheses are forinformation only.1.4 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 i
7、ncluding those identified in the appropriateMaterial Safety Data Sheet for this product/material as pro-vided by the manufacturer, to establish appropriate safety andhealth practices, and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:A 37
8、0 Test Methods and Definitions for Mechanical Testingof Steel Products2B 127 Specification for Nickel-Copper Alloy (UNSN04400) Plate, Sheet, and Strip2B 162 Specification for Nickel Plate, Sheet, and Strip2B 168 Specification for Nickel-Chromium-Iron Alloys(UNS N06600, N06601, N06603, N06690, N06025
9、 andN06045) and Nickel-Chromium-Cobalt-Molybdenum Al-loy (UNS N06617) Plate, Sheet, and Strip2B 333 Specification for Nickel-Molybdenum Alloy Plate,Sheet, and Strip2B 424 Specification for Ni-Fe-Cr-Mo-Cu-Alloy (UNSN08825 and UNS N08221) Plate, Sheet, and Strip2B 435 Specification for UNS N06002, UNS
10、 N06230, UNSN12160, and UNS R30556 Plate, Sheet, and Strip2B 443 Specification for Nickel-Chromium-Molybdenum-Columbium Alloy (UNS N06625) Plate, Sheet, and Strip2B 463 Specification for UNS N08020, UNS N08026, andUNS N08024 Alloy Plate, Sheet, and Strip3B 536 Specification for Nickel-Iron-Chromium-
11、Silicon Al-loys (UNS N08330 and N08332) Plate, Sheet, and Strip2B 575 Specification for Low-Carbon Nickel-Molybdenum-Chromium, Low-Carbon Nickel-Chromium-Molybdenum,Low-Carbon Nickel-Chromium-Molybdenum-Copper,Low-Carbon Nickel-Chromium-Molybdenum-Tantalum,and Low-Carbon Nickel-Chromium-Molybdenum-T
12、ungsten Alloy Plate, Sheet, and Strip2B 582 Specification for Nickel-Chromium-Iron-Molybdenum-Copper Alloy, Plate, Sheet, and Strip2B 880 Specification for General Requirements for ChemicalCheck Analysis Limits for Nickel, Nickel Alloys andCobalt Alloys2B 899 Terminology Relating to Non-ferrous Meta
13、ls andAlloys2E 8 Test Methods for Tension Testing of Metallic Materials4E 29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications5E 1473 Test Method for Chemical Analysis of Nickel,Cobalt, and High Temperature Alloys61This specification is under the jurisdic
14、tion of ASTM Committee B02 onNonferrous Metals and Alloys and is the direct responsibility of SubcommitteeB02.07on Refined Nickel and Cobalt and Their Alloys.Current edition approved March 10, 2003. Published May 2003. Originallyapproved in 1968. Last previous edition approved in 1999 as B 474 99.*
15、New designation established in accordance with ASTM E 527 and SAE J 1086,Practice for Numbering Metals and Alloys (UNS).2Annual Book of ASTM Standards, Vol 01.03.3Annual Book of ASTM Standards, Vol 02.04.4Annual Book of ASTM Standards, Vol 03.01.5Annual Book of ASTM Standards, Vol 14.02.6Annual Book
16、 of ASTM Standards, Vol 03.06.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.2.2 American Society of Mechanical Engineers Standard:ASME Boiler and Pressure Vessel Code, Section IX andSection VIII, Div. 172.3 American Welding Society
17、 Standards:A5.4 Corrosion-Resisting Chromium and Chromium NickelSteel Covered Welding Electrodes8A5.9 Corrosion-Resisting Chromium and Chromium NickelSteel Welding Rods and Bare Electrodes8A5.11 Nickel and Nickel Alloy Covered Welded Elec-trodes8A5.14 Nickel and Nickel Alloy Bare Welding Rods andEle
18、ctrodes83. Terminology3.1 Terms defined in Terminology B 899 shall apply unlessotherwise defined in this standard.4. Ordering Information4.1 It is the responsibility of the purchaser to specify allrequirements that are necessary for material ordered under thisspecification. Examples of such requirem
19、ents include, but arenot limited to, the following:4.1.1 Quantity (feet or number of lengths),4.1.2 Name of material or UNS number (electric-fusion-welded pipe),4.1.3 Alloy (Table 1),4.1.4 Class (see 1.2),4.1.5 Size (outside diameter and minimum wall thickness),4.1.6 Length (specific or random),4.1.
20、7 ASTM designation and year of issue,4.1.8 Authorization for repair of plate defects by weldingwithout prior approval if such is intended (see 9.4),4.1.9 Circumferential weld permissibility (see 8.3.2), and4.1.10 Supplementary requirements.5. Materials and Manufacture5.1 MaterialsThe plate material
21、shall conform to therequirements of the appropriate raw material specificationlisted in 2.1.5.2 Welding:5.2.1 The joints shall be full penetration double-welded orsingle-welded butt joints employing fusion welding processesas defined under “Definitions,” ASME Boiler and PressureVessel Code, Section
22、IX. This specification makes no provisionfor any difference in weld quality requirements regardless ofthe weld joint type employed (single or double) in making theweld. Where backing rings or strips are employed, the ring orstrip material shall be of the same P-number (Table QW-422 ofSection IX) as
23、the plate being joined. Backing rings or stripsshall be completely removed after welding, prior to anyrequired radiography, and the exposed weld surface shall beexamined visually for conformance to the requirements of5.2.3. Welds made by procedures employing backing strips orrings which remain in pl
24、ace are prohibited. Welding proceduresand welding operators shall be qualified in accordance withASME Boiler and Pressure Vessel Code, Section IX.5.2.2 Except as provided in 5.2.2.1 and 5.2.2.2, welds shallbe made in their entirety by processes involving the depositionof filler metal.5.2.2.1 For Cla
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