1、Designation: B 704 03Standard Specification forWelded UNS N06625, UNS N06219 and UNS N08825 AlloyTubes1This standard is issued under the fixed designation B 704; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revi
2、sion. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers welded UNS N06625, UNSN06219 and UNS N08825 alloy boiler, heat exchanger, andcondenser tubes for ge
3、neral corrosion resisting and low orhigh-temperature service.1.2 This specification covers tubes18 to 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 B 751lists the dimensional requirements of these sizes. Tu
4、bes havingother 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 the standard. The values given in parentheses are forinformation only.1.4 This standard does not purport to addres
5、s 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 for this product/material as pro-vided by the manufacturer, to establish appro
6、priate safety andhealth practices, and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2B 751 Specification for General Requirements for Nickeland Nickel Alloy Welded TubeE 8 Test Methods for Tension Testing of Metallic Materials3. Ordering
7、 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 (random or specific),3.1.5 Class, and3.1.6 Grade if UNS N06625 is
8、 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 InspectionState which tests or inspec-tions are to be witnes
9、sed, 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 either the weld metal only or both weld andbase metal.4.2
10、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 Specification B 751.5.2 If a product analysis is pe
11、rformed, it shall meet thechemistry limits prescribed in Table 1, subject to the analysistolerances of Specification B 751.6. Mechanical and Other Properties6.1 Mechanical PropertiesThe material shall conform tothe mechanical property requirements specified in Table 2. Onetest is required for each l
12、ot as defined in Specification B 751.6.2 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 each end ofone tube per lot.6.4 Nondestructi
13、ve Test Requirements: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 Nov. 1, 2003. Published December 2003. Originallyappro
14、ved in 1982. Last previous edition approved in 2000 as B 704 - 00.2For 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 page onthe ASTM web
15、site.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6.4.1 Class 1Each piece in each lot shall be subject to oneof the following four tests: hydrostatic, pneumatic (ai
16、r under-water), eddy 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 t
17、est 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 current edition ofSpecification B 751 unless otherwise provided herein.8. Produc
18、t Marking8.1 In addition to the requirements of Specification B 751,UNS N06625 tubes shall be marked with grade information.9. Keywords9.1 UNS N06219; UNS N06625; UNS N08825; weldedtubeSUMMARY OF CHANGESCommittee B02 has identified the location of selected changes to this standard since the last iss
19、ue (B 704 - 00)that may impact the use of this standard.(1) Added grade to ordering information and renumberedSection 3.(2) Added new Section 8, Product Marking.(3) Added grade mechanical requirements to Table 2 andfootnote B.ASTM International takes no position respecting the validity of any patent
20、 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 their own responsibility.This standard is subject to revision at
21、 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 should be addressed to ASTM International Headquarters. Your comment
22、s 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 Standards, at the address shown below.This standard is copyrighted b
23、y 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 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail
24、); or through the ASTM website(www.astm.org).TABLE 1 Chemical RequirementsComposition Limits, %UNSN06625UNSN06219UNSN08825Ni 58.0 minABal 38.046.0Cr 20.023.0 18.0-22.0 19.523.5Fe 5.0 max 2.0-4.0 22.0 minAMo 8.010.0 7.0-9.0 2.5 3.5Cb + Ta 3.154.15 . .C 0.10 max 0.05 max 0.05 maxMn 0.50 max 0.50 max 1
25、.0 maxSi 0.5 max 0.70-1.10 0.5 maxP 0.015 max 0.020 max .S 0.015 max 0.010 max 0.03 maxAl 0.4 max 0.50 max 0.2 maxTi 0.40 max 0.50 max 0.61.2Co (if determined) 1.0 max 1.0 max .Cu . 0.50 max 1.53.0AElement may be determined arithmetically by difference.TABLE 2 Mechanical Property RequirementsAlloy G
26、radeTensile Strengthmin, psi (MPa)Yield StrengthA0.2 % Offset,min, psi (MPa)Elonga-tion in 2in. or 50mm, min,%UNS N06625 1 (annealed) 120 000 (827) 60 000 (414) 30UNS N06625 2 (solutionannealed)B100 000 (690) 40 000 (276) 30UNS N06219 . 96 000 (660) 39 000 (270) 30UNS N08825 . 85 000 (586) 35 000 (240) 30AYield strength shall be determined by the offset method at 0.2 % limitingpermanent set in accordance with Test Methods E 8.BSolution annealed at 2000F (1093C) minimum, with or without subsequentstabilization anneal at 1800F (982C) minimum to increase resistance to sensi-tization.B704032
