1、Designation: B668 05 (Reapproved 2010)Standard Specification forUNS N08028 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 of last revision.
2、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 seamless cold-finished or hot finished pipe and tube intended for generalcorrosive service. The
3、 general requirements are covered inSpecification B829.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 This standard does not pur
4、port to address all of thesafety concerns, if any, associated with its use. It is theresponsibility 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
5、, to establish appropriatesafety and health practices, and determine the applicability ofregulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2B829 Specification for General Requirements for Nickeland Nickel Alloys Seamless Pipe and Tube3. General Requirement3.1 Material fur
6、nished under this specification shall con-form to the applicable requirements of Specification B829unless 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
7、ordered under this specification.Examples of such requirements include, but are not limited to,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 numbe
8、r), 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 whethersamples for product (check) analysis should be
9、furnished, and4.1.8 Purchaser InspectionIf the purchaser wishes towitness tests or inspection 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 s
10、olution-annealedcondition.NOTE 1The recommended heat treatment shall consist of heating thematerial 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 remov
11、al operations are not necessary.6. Chemical Composition6.1 The material shall conform to the requirement pre-scribed in Table 1.6.1.1 A chemical analysis shall be made on each lot ofmaterial as described in Specification B829.1This specification is under the jurisdiction of ASTM Committee B02 onNonf
12、errous Metals and Alloys and is the direct responsibility of SubcommitteeB02.07 on Refined Nickel and Cobalt and Their Alloys.Current edition approved Oct. 1, 2010. Published October 2010. Originallyapproved in 1980. Last previous edition approved in 2005 as B668 05. DOI:10.1520/B0668-05R10.2For ref
13、erenced 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 onthe ASTM website.TABLE 1 Chemical RequirementsElement Composition, %Carbon, max 0.030S
14、ilicon, 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 section appears at the end of this standard.Copyright ASTM International, 100 Barr Harb
15、or Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6.2 If a product (check) analysis is performed by thepurchaser, the material shall conform to Table 1 subject to theproduct (check) analysis variations prescribed in SpecificationB829.7. Mechanical Properties and Other Requiremen
16、ts7.1 The material shall conform to the mechanical propertiesprescribed in Table 2. One test is required for each lot, asdefined in Specification B829.7.1.1 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
17、or tube from each lot offinished tubes.7.3 Hydrostatic Test or Nondestructive Test:7.3.1 Each pipe or tube shall be 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
18、Variations8.1 Outside Diameter and Wall ThicknessThe permissiblevariations in the outside diameter and the wall thickness shallnot exceed those prescribed in Tables 3, 4 and 5 of Specifica-tion B829.9. Keywords9.1 seamless tube; UNS N08028SUMMARY OF CHANGESCommittee B02 has identified the location o
19、f selected changes to this standard since the last issue (B668 00)that may impact the use of this standard.(1) Addition 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 o
20、f 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 every fiv
21、e 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 technical c
22、ommittee, 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 Conshohocken, PA
23、 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 photocopy 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) 40B668 05 (2010)2
