1、Designation: B 515 95 (Reapproved 2002)Standard Specification forWelded UNS N08120, UNS N08800, UNS N08810, andUNS N08811 Alloy Tubes1This standard is issued under the fixed designation B 515; the number immediately following the designation indicates the year oforiginal adoption or, in the case of
2、revision, the year of 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 welded UNS N08120, UNSN08800, UNS N08810 and UNS N08811* alloy boiler
3、, heatexchanger, and condenser tubes for general corrosion resistingand low or high-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. Table 2 of Speci-fication B 7
4、51 lists the dimensional requirements of these sizes.Tubes having other dimensions may be furnished providedsuch tubing complies with all other requirements of thisspecification.1.3 The values stated in inch-pound units are to be regardedas the standard. The SI units given in parentheses are forinfo
5、rmation only.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 for this product/mate
6、rial as pro-vided by the manufacturer, to establish appropriate safety andheal practices, and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:B 751 Specification for General Requirements for Nickeland Nickel Alloy Welded Tube23. Ordering In
7、formation3.1 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 (outside diameter minimum or average wallthickness),3.1.4 Length (random or specific),3.1.5 Class,3.1.6 ASTM Designation,3.1.7 Product
8、 AnalysisState if required,3.1.8 CertificationState if a certification or a report of testresults is required, and3.1.9 Purchaser InspectionState 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
9、 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 Tube shall be furnished with oxide removed. Whenbright annealing is used, descaling is not necessary.5. Chemic
10、al 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 performed, it shall meet thechemistry limits prescribed in Table 1, subject to the analysistolerances specified
11、in Table 6 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 lot as defined in Specification B 751.6.2 Grain SizeA transverse sample representing the f
12、ull-wall thickness of annealed alloys UNS N08120, N08810, andN08811 shall conform to an average grain size of ASTM No.5 or coarser.6.3 Flattening TestA flattening test shall be made on eachend of one tube per lot. Superficial ruptures resulting fromsurface imperfections shall not be cause for reject
13、ion.6.4 Flange TestA flange test shall be made on each 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 approv
14、ed Oct. 10, 1995. Published December 1995. Originallypublished as B 515 70. Last previous edition B 515 95.* New designation established in accordance with ASTM E 527 and SAE J1086,Practice for Numbering Metals and Alloys (UNS).2Annual Book of ASTM Standards, Vol 02.04.1Copyright ASTM International,
15、 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6.5 Nondestructive Test Requirements:6.5.1 Class 1Each piece of each lot shall be subject to oneof the following four tests: hydrostatic, pneumatic (air under-water), eddy current, or ultrasonic.6.5.2 Class 2Each pi
16、ece in each lot shall be subjected toa leak test and an electric test as follows:6.5.2.1 Leak TestHydrostatic or pneumatic (air underwa-ter).6.5.2.2 Electric TestEddy current or ultrasonic.6.6 The manufacturer shall have the option to test Class 1 orClass 2 and select the nondestructive test methods
17、, 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. Keywords8.1 UNS N08120; UNS N08800; UNS N08810; UNSN08811; welded t
18、ubeASTM International 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,
19、are entirely 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 stan
20、dardsand should 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 Comm
21、ittee on Standards, 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 aboveaddre
22、ss or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).TABLE 1 Chemical RequirementsElementComposition Limits, %AlloyN08120AlloyN08800AlloyN08810AlloyN08811Nickel, min 35.0 30.0 30.0 30.0, max 39.0 35.0 35.0 35.0Chromium, min 23.0 19
23、.0 19.0 19.0, max 27.0 23.0 23.0 23.0Iron, min remainder 39.5A39.5A39.5AManganese, max 1.5 1.5 1.5 1.5Carbon , min 0.02 . . ., max 0.10 0.10 0.05 to 0.10 0.06 to 0.10Copper, max 0.50 0.75 0.75 0.75Silicon, max 1.0 1.0 1.0 1.0Sulfur, max 0.03 0.015 0.015 0.015Aluminum, minB. 0.15 0.15 0.15, max 0.40
24、0.60 0.60 0.60Titanium, minB. 0.15 0.15 0.15, max 0.20 0.60 0.60 0.60Columbium , min 0.4 . . ., max 0.9 . . .Molybdenum, max 2.50 . . .Phosphorus, max 0.040 . . .Tungsten, max 2.50 . . .Cobalt, max 3.0 . . .Nitrogen , min 0.15 . . ., max 0.30 . . .Boron, max 0.010 . . .AIron shall be determined arit
25、hmetically by difference.BAlloy UNS N08811: Al + Ti, 0.851.20.TABLE 2 Mechanical Property RequirementsAlloy Condition (Temper)Tensile Strength, min,psi (MPa)Yield Strength, 0.2 % Offset,min, psi (MPa)Elongation in 2 in. or50 mm, min, %UNS N08120 annealed 90 000 (621) 40 000 (276) 30UNS N08800 annealed 75 000 (520) 30 000 (205) 30UNS N08810 and UNS N08811 annealed 65 000 (450) 25 000 (170) 30B 515 95 (2002)2
