1、Designation: B 739 03 (Reapproved 2008)Standard Specification forNickel-Iron-Chromium-Silicon Alloy Welded Tube1This standard is issued under the fixed designation B 739; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of
2、last revision. 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 alloys UNS N08330 and UNSN08332 in the form of welded tube intended for heat resistingappli
3、cations and general corrosive service.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 theresponsibility
4、 of the user of this standard to become 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 ofregulatory
5、limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2B 536 Specification for Nickel-Iron-Chromium-Silicon Al-loys (UNS N08330 and N08332) Plate, Sheet, and StripB 751 Specification for General Requirements for Nickeland Nickel Alloy Welded Tube3. General Requirement3.1 Material furnis
6、hed under this specification shall con-form to the applicable requirements of Specification B 751unless otherwise provided herein.4. Ordering Information4.1 It is the responsibility of the purchaser to specify allrequirements that are necessary for material ordered under thisspecification. Examples
7、of such requirements include, but arenot limited to, the following:4.1.1 Alloy (Table 1),4.1.2 ASTM designation and year of issue,4.1.3 Dimensions (outside or inside diameter and nominalwall thickness),4.1.4 Length (specific or random),4.1.5 Quantity (feet or number of pieces),4.1.6 CertificationSta
8、te 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 purchaser wishes to witnesstests or inspection of material at place of manufacture, thepurchase order must so state indicat
9、ing which tests or inspec-tions are to be witnessed.5. Materials and Manufacture5.1 The tube shall be made from flat-rolled alloy conform-ing to Specification B 536, by an automatic welding processwith no addition of filler metal. Subsequent to welding andprior to final heat treatment, the tube shal
10、l be cold-workedeither in both weld and base metal or in weld metal only.6. Chemical Composition6.1 The material shall conform to the requirements, as tochemical composition specified in Table 2.6.2 If a product (check) analysis is performed by thepurchaser, the material shall conform to the product
11、 (check)analysis variations per Specification B 751.7. Mechanical Properties and Other Requirements7.1 The tensile properties of the material at room tempera-ture shall conform to those shown in Table 1.7.2 Grain SizeAnnealed Alloy UNS N08332 shall con-form to an average grain size of ASTM No. 5 or
12、coarser.7.3 Annealing TemperatureAlloy UNS N08330 shall beannealed at 1900F (1040C) minimum. Alloy UNS N08332shall be annealed at 2050F (1120C) minimum.8. Keywords8.1 welded tube; N08330; N083321This specification is under the jurisdiction of ASTM Committee B02 onNonferrous Metals and Alloys and is
13、the direct responsibility of SubcommitteeB02.07 on Refined Nickel and Cobalt and Their Alloys.Current edition approved March 1, 2008. Published March 2008. Originallyapproved in 1985. Last previous edition approved in 2003 as B 739 - 03.2For referenced ASTM standards, visit the ASTM website, www.ast
14、m.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.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.ASTM Inte
15、rnational 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 riskof infringement of such rights, are entirely
16、 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 standard or for additional standardsand sho
17、uld 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 your views known to the ASTM Committee on Sta
18、ndards, 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 contacting ASTM at the aboveaddress or at 610
19、-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).TABLE 1 Mechanical PropertiesAlloy ConditionTensile Strength,min, psi (MPa)Yield Strength, 0.2 %offset, min, psi(MPa)Elongation in 2 in. or50 mm, or 4D, min,%HardnessAUNS N08330 Annealed 70
20、000 (483) 30 000 (207) 30 7090 HRBUNS N08332 Annealed 67 000 (462) 27 000 (186) 30 6588 HRBAHardness values are informative only and not to be construed as the basis for acceptance.TABLE 2 Chemical RequirementsElement Composition Limits, %Carbon .AManganese 2.00 maxPhosphorus 0.03 maxSulfur 0.03 maxSilicon 0.751.50Chromium 17.020.0Nickel 34.037.0Copper 1.00 maxLead 0.005 maxTin 0.025 maxIron remainderBAAlloy UNS N08330: 0.08 max.Alloy UNS N08332: 0.050.10.BElement shall be determined arithmetically by difference.B 739 03 (2008)2
