1、Designation:B70403(Reapproved 2014)Standard Specification forWelded UNS N06625,UNS N06219 and UNS N08825 AlloyTubes1This standard is issued under the fixed designation B704;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()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers welded UNS N06625,UNSN06219 and UNS N08825 alloy boiler,heat exchanger,andcondenser tubes for gen
3、eral corrosion resisting and low orhigh-temperature service.1.2 This specification covers tubes18to 5 in.(3.18 to 127mm),inclusive,in outside diameter and 0.015 to 0.500 in.(0.38to 12.70 mm),inclusive,in wall thickness.Specification B751lists the dimensional requirements of these sizes.Tubes havingo
4、ther dimensions may be furnished provided such tubingcomplies with all other requirements of this specification.1.3 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 ar
5、e not considered standard.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to become familiarwith all hazards including those identified in the appropriateMaterial Safety Data Sheet(MSDS)for th
6、is product/materialas provided by the manufacturer,to establish appropriatesafety and health practices,and determine the applicability ofregulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2B751 Specification for General Requirements for Nickel andNickel Alloy Welded TubeE8
7、Test Methods for Tension Testing of Metallic Materials3.Ordering Information3.1 Orders for material to this specification should includethe following information:3.1.1 Quantity(feet or number of lengths),3.1.2 UNS number,3.1.3 Size(outsize diameter,minimum or average wallthickness),3.1.4 Length(rand
8、om or specific),3.1.5 Class,and3.1.6 Grade if UNS N06625 is specified.If neither grade ofN06625 is specified,grade 1 will be supplied.3.1.7 ASTM designation.3.1.8 Product AnalysisState if required.3.1.9 CertificationState if a certification or a report of testresults is required.3.1.10 Purchaser Ins
9、pectionState which tests or inspec-tions are to be witnessed,if any.4.Materials and Manufacture4.1 Tube shall be made from flat-rolled alloy by an auto-matic welding process with no addition or filler metal.Subse-quent to welding and prior to final annealing,the material shallbe cold-worked in eithe
10、r the weld metal only or both weld andbase metal.4.2 Tube shall be furnished with oxide removed.Whenbright annealing is used,descaling is not necessary.5.Chemical Composition5.1 The material shall conform to the composition limitsspecified in Table 1.One test is required for each lot as definedin Sp
11、ecification B751.5.2 If a product analysis is performed,it shall meet thechemistry limits prescribed in Table 1,subject to the analysistolerances of Specification B751.6.Mechanical and Other Properties6.1 Mechanical PropertiesThe material shall conform tothe mechanical property requirements specifie
12、d in Table 2.Onetest is required for each lot as defined in Specification B751.6.2 Flattening TestA flattening test shall be made on eachend of one tube per lot.Superficial ruptures resulting fromsurface imperfections shall not be cause for rejection.6.3 Flange TestA flange test shall be made on eac
13、h end ofone tube per lot.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 Oct.1,2014.Published October 2014.Originallyapprov
14、ed in 1982.Last previous edition approved in 2009 as B704 03(2009).DOI:10.1520/B0704-03R14.2For 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
15、 page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 6.4 Nondestructive Test Requirements:6.4.1 Class 1Each piece in each lot shall be subject to oneof the following four tests:hydrostatic,pneumatic(airunderwater),eddy
16、 current,or ultrasonic.6.4.2 Class 2Each piece in each lot shall be subjected toa leak test and an electric test as follows:6.4.2.1 Leak TestHydrostatic or pneumatic(air underwa-ter).6.4.2.2 Electric TestEddy current or ultrasonic.6.5 The manufacturer shall have the option to test to Class1 or 2 and select the nondestructive test methods,if notspecified by the purchaser.7.General Requirements7.1 Material furnished under this specification shall con-form to the applicable requirements of the curr
