1、Designation:B66814Standard 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 of last revision.A number in p
2、arentheses 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 N08029seamless cold-finished or hot finished pipe and tube intendedfor general corrosive service.The general
3、 requirements arecovered in Specification 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 purport to a
4、ddress 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,to establish
5、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 Nickel andNickel Alloys Seamless Pipe and Tube3.General Requirement3.1 Material furnished under this
6、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 ordered under this
7、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 number),and length,4.1.3.2 S
8、tandard 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 furnished,and4.1.8 Purchaser In
9、spectionIf the purchaser wishes towitness tests or inspection of material at the place ofmanufacture,the purchase order must so state,indicatingwhich tests or inspections are to be witnessed.5.Materials and Manufacture5.1 Pipe and tube shall be furnished in the solution-annealedcondition.NOTE1The re
10、commended heat treatment for UNS N08028 shallconsist of heating the material to a temperature of 1975 to 2100F(1080to 1150C)with subsequent quenching in water or rapidly cooling byother means.The recommended heat treatment for UNS N08029 shallconsist of heating the material to a minimum temperature
11、of 2000F(1100C)with subsequent quenching in water or rapidly cooling by othermeans.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 requirement pre-scribed in Table 1.6.1.1 A ch
12、emical analysis shall be made on each lot ofmaterial as described in Specification B829.6.2 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
13、 Requirements7.1 The material shall conform to the mechanical propertiesprescribed in Table 2.One test is required for each lot,asdefined in Specification B829.1This specification is under the jurisdiction of ASTM Committee B02 onNonferrous Metals and Alloys and is the direct responsibility of Subco
14、mmitteeB02.07 on Refined Nickel and Cobalt and Their Alloys.Current edition approved May 15,2014.Published May 2014.Originallyapproved in 1980.Last previous edition approved in 2010 as B668 05(2010).DOI:10.1520/B0668-14.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact AST
15、M Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,
16、PA 19428-2959.United States1 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 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 Variations8.1 Outside Di
