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    ASTM B668-2005 Standard Specification for UNS N08028 Seamless Pipe and Tube《UNS N08028无缝管标准规范》.pdf

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    ASTM B668-2005 Standard Specification for UNS N08028 Seamless Pipe and Tube《UNS N08028无缝管标准规范》.pdf

    1、Designation: B 668 05Standard Specification forUNS N08028 Seamless Pipe and Tube1This standard is issued under the fixed designation B 668; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in pare

    2、ntheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers UNS N08028 seamless cold-finished or hot finished pipe and tube intended for generalcorrosive service. The general requir

    3、ements are covered inSpecification B 829.1.2 The values stated in inch-pound units are to be regardedas the standard. The values given in parentheses are forinformation only.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibil

    4、ity of the user of this standard to be come familiarwith all hazards including those identified in the appropriateMaterial Safety Data Sheet (MSDS) for this product/materialas provided by the manufacturer, to establish appropriatesafety and health practices, and determine the applicability ofregulat

    5、ory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2B 829 Specification for General Requirements for Nickeland Nickel Alloys Seamless Pipe and Tube3. General Requirement3.1 Material furnished under this specification shall con-form to the applicable requirements of Specification

    6、B 829unless otherwise provided herein.4. Ordering Information4.1 It is the responsibility of the purchaser to specify allrequirements that are necessary for the safe and satisfactoryperformance of material ordered under this specification.Examples of such requirements include, but are not limited to

    7、,the following:4.1.1 Alloy name or UNS number,4.1.2 ASTM designation and year of issue,4.1.3 Dimensions:4.1.3.1 Outside diameter, minimum or average wall thick-ness (in inches or millimetres, not gage number), and length,4.1.3.2 Standard pipe size, schedule and length,4.1.4 Quantity (feet or metres,

    8、 or number of pieces),4.1.5 Optional requirements,4.1.6 CertificationState if certification is required,4.1.7 Samples for Product (Check) AnalysisState whethersamples for product (check) analysis should be furnished, and4.1.8 Purchaser InspectionIf the purchaser wishes towitness tests or inspection

    9、of material at the place of manu-facture, the purchase order must so state, indicating which testsor inspections are to be witnessed.5. Materials and Manufacture5.1 Pipe and tube shall be furnished in the solution-annealedcondition.NOTE 1The recommended heat treatment shall consist of heating themat

    10、erial to a temperature of 1975 to 2100F (1080 to 1150C) withsubsequent quenching in water or rapidly cooling by other means.5.2 The scale shall be removed by suitable means. Whenbright annealed, scale removal operations are not necessary.6. Chemical Composition6.1 The material shall conform to the r

    11、equirement pre-scribed in Table 1.1This specification is under the jurisdiction of ASTM Committee B02 onNonferrous Metals and Alloys and is the direct responsibility of SubcommitteeB02.07 on Refined Nickel and Cobalt and Their Alloys.Current edition approved Nov. 1, 2005. Published November 2005. Or

    12、iginallyapproved in 1980. Last previous edition approved in 2000 as B 668 00.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page ont

    13、he ASTM website.TABLE 1 Chemical RequirementsElement Composition, %Carbon, max 0.030Silicon, max 1.0Manganese, max 2.50Phosphorus, max 0.030Sulfur, max 0.030Chromium 26.028.0Nickel 30.034.0Molybdenum 3.04.0Copper 0.61.4Iron remainderAADetermined arithmetically by difference.1*A Summary of Changes se

    14、ction appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6.1.1 A chemical analysis shall be made on each lot ofmaterial as described in Specification B 829.6.2 If a product (check) analysis is performe

    15、d by thepurchaser, the material shall conform to Table 1 subject to theproduct (check) analysis variations prescribed in SpecificationB 829.7. Mechanical Properties and Other Requirements7.1 The material shall conform to the mechanical propertiesprescribed in Table 2. One test is required for each l

    16、ot, asdefined in Specification B 829.7.1.1 One tension test shall be made on each lot of pipe ortube.7.2 Flaring TestOne flaring test shall be made on aspecimen from one end of one pipe or tube from each lot offinished tubes.7.3 Hydrostatic Test or Nondestructive Test:7.3.1 Each pipe or tube shall b

    17、e subjected to either thehydrostatic test or the nondestructive electric test at themanufacturers option. The purchaser may specify which test isto be used.8. Dimensions and Permissible Variations8.1 Outside Diameter and Wall ThicknessThe permissiblevariations in the outside diameter and the wall th

    18、ickness shallnot exceed those prescribed in Tables 3, 4 and 5 of Specifica-tion B 829.9. Keywords9.1 seamless tube; UNS N08028SUMMARY OF CHANGESCommittee B02 has identified the location of selected changes to this standard since the last issue (B 668 00)that may impact the use of this standard.(1) A

    19、ddition of 1.3.(2) Revision of 4.1.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk

    20、of infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this

    21、 standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake y

    22、our views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by c

    23、ontacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).TABLE 2 Tensile RequirementsTensile Strength,min, ksi (MPa)Yield Strength,0.2 % Offset, min,ksi (MPa)Elongation in 2in. (50.8 mm) or4D,min,%73 (500) 31 (214) 40B668052


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