1、Designation: B668 05 (Reapproved 2010)B668 14Standard Specification forUNS N08028 and N08029 Seamless Pipe and Tube1This standard is issued under the fixed designation B668; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year
2、of 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*1.1 This specification covers UNS N08028 and N08029 seamless cold-finished or hot finished pipe and tube intended forg
3、eneral corrosive service. The general requirements are covered in Specification B829.1.2 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 considered standar
4、d.1.3 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 be come familiar with all hazards including those identified in the appropriate Material Safety DataSheet (MSDS) for this product/mater
5、ial 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:2B829 Specification for General Requirements for Nickel and Nickel Alloys Seamless Pipe and Tube3
6、 General Requirement3.1 Material furnished under this specification shall conform to the applicable requirements of Specification B829 unlessotherwise provided herein.4. Ordering Information4.1 It is the responsibility of the purchaser to specify all requirements that are necessary for the safe and
7、 satisfactoryperformance of material ordered under this specification. Examples of such requirements include, but are not limited to, thefollowing: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 thickness (in
8、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, 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 whether samples f
9、or product (check) analysis should be furnished, and4.1.8 Purchaser InspectionIf the purchaser wishes to witness tests or inspection of material at the place of manufacture, thepurchase order must so state, indicating which tests or inspections are to be witnessed.5. Materials and Manufacture5.1 Pip
10、e and tube shall be furnished in the solution-annealed condition.NOTE 1The recommended heat treatment for UNS N08028 shall consist of heating the material to a temperature of 1975 to 2100F (1080 to 1150C)1 This specification is under the jurisdiction ofASTM Committee B02 on Nonferrous Metals andAllo
11、ys and is the direct responsibility of Subcommittee B02.07 on RefinedNickel and Cobalt and Their Alloys.Current edition approved Oct. 1, 2010May 15, 2014. Published October 2010May 2014. Originally approved in 1980. Last previous edition approved in 20052010 asB668 05.B668 05 (2010). DOI: 10.1520/B0
12、668-05R10.10.1520/B0668-14.2 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 page on the ASTM website.This document is not an ASTM stand
13、ard 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 users consult prior editions as appropriate. In all cases
14、 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 Conshohocken, PA 19428-2959. United States1with subsequent q
15、uenching in water or rapidly cooling by other means. The recommended heat treatment for UNS N08029 shall consist of heating thematerial to a minimum temperature of 2000F (1100C) with subsequent quenching in water or rapidly cooling by other means.5.2 The scale shall be removed by suitable means. Whe
16、n bright annealed, scale removal operations are not necessary.6. Chemical Composition6.1 The material shall conform to the requirement prescribed in Table 1.6.1.1 A chemical analysis shall be made on each lot of material as described in Specification B829.6.2 If a product (check) analysis is perform
17、ed by the purchaser, the material shall conform to Table 1 subject to the product(check) analysis variations prescribed in Specification B829.7. Mechanical Properties and Other Requirements7.1 The material shall conform to the mechanical properties prescribed in Table 2. One test is required for eac
18、h lot, as definedin Specification B829.7.1.1 One tension test shall be made on each lot of pipe or tube.7.2 Flaring TestOne flaring test shall be made on a specimen from one end of one pipe or tube from each lot of finished tubes.7.3 Hydrostatic Test or Nondestructive Test:7.3.1 Each pipe or tube sh
19、all be subjected to either the hydrostatic test or the nondestructive electric test at the manufacturersoption. The purchaser may specify which test is to be used.8. Dimensions and Permissible Variations8.1 Outside Diameter and Wall ThicknessThe permissible variations in the outside diameter and the
20、 wall thickness shall notexceed those prescribed in Tables 3, 4 and 5 of Specification B829.9. Keywords9.1 seamless tube; UNS N08028N08028; UNS N08029TABLE 1 Chemical RequirementsElement Composition, %Carbon, max 0.030Silicon, max 1.0Manganese, max 2.50Phosphorus, max 0.030Sulfur, max 0.030Chromium
21、26.028.0Nickel 30.034.0Molybdenum 3.04.0Copper 0.61.4Iron remainderATABLE 1 Chemical RequirementsAlloy UNS N08028 UNS N08029Element Composition, % Composition, %Carbon, max 0.030 0.020Silicon, max 1.0 0.6Manganese, max 2.50 2.0Phosphorus, max 0.030 0.025Sulfur, max 0.030 0.015Chromium 26.028.0 26.0-
22、28.0Nickel 30.034.0 30.0-34.0Molybdenum 3.04.0 4.0-5.0Copper 0.61.4 0.6-1.4Iron remainderA remainderAA Determined arithmetically by difference.B668 142SUMMARY OF CHANGESCommittee B02 has identified the location of selected changes to this standard since the last issue(B668 00B668) -05 (2010) that ma
23、y impact the use of this standard. (Approved May 15, 2014.)(1) Addition of 1.3.UNS N08029 to Title, Scope, 5.1, Table 1, and Table 2.(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. U
24、sers of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof 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 eve
25、ry five years andif not revised, either reapproved or withdrawn.Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible techni
26、cal committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your 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 Conshohocke
27、n, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting 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). Permission rights to photoco
28、py the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).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) 40TABLE 2 Tensile RequirementsAlloy Tensile Strength,min, ksi (MPa)Yield Strength,0.2 % Offset,min,ksi (MPa)Elongation in 2in. (50.8 mm) or4D, min, %UNS N08028 73 (500) 31 (214) 40UNS N08029 73 (500) 31 (214) 40B668 143
