1、Designation: B652/B652M 10 (Reapproved 2018)Standard Specification forNiobium-Hafnium Alloy Ingots1This standard is issued under the fixed designation B652/B652M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last rev
2、ision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers hafnium alloyed niobium in-gots prepared by vacuum- or plasma- arc melting or electron-beam furnace
3、melting, or a combination of these methods, toproduce consolidated metal for processing to various millshapes.1.2 The material covered by this specification is GradeR04295, niobium-base alloy containing approximately 10 %hafnium and 1 % titanium.1.3 The values stated in either SI units or inch-pound
4、 unitsare to be regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem shall be used independently of the other. Combiningvalues from the two systems may result in non-conformancewith the standard.1.4 This international standard was devel
5、oped in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Docu
6、ments2.1 ASTM Standards:2E29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE2626 Guide for Spectrometric Analysis of Reactive andRefractory Metals (Withdrawn 2017)33. Terminology3.1 Lot Definitions:3.1.1 ingot, na quantity of metal cast into a shape su
7、itablefor subsequent processing to various mill products.4. Ordering Information4.1 Orders for material under this specification shall includethe following information as applicable:4.1.1 General alloy description (see 1.2) and ASTM desig-nation and year of issue,4.1.2 Quantity in weight or pieces,4
8、.1.3 Size: diameter and length,4.1.4 Chemistry (Section 6),4.1.5 Quality and finish (see 8.2, 8.4, and 8.6),4.1.6 Certifications and Reports (Section 14),4.1.7 Packaging (Section 16), and4.1.8 Disposition of rejected material (Section 12).5. Materials and Manufacture5.1 The ingot metal for this mate
9、rial may be vacuum- orplasma-arc melted, electron-beam melted, or a combination ofthese methods.6. Chemical Composition6.1 The material shall conform to the requirements as tochemical composition prescribed in Table 1. Analysis forelements, not listed in Table 1 and not normally expected inniobium h
10、afnium alloy, shall not be required unless specified attime of purchase. Guide E2626 may be used as a guide forchemical analysis techniques.7. Permissible Variations in Quantity7.1 For orders requiring up to 100 lb 45 kg of ingots, themanufacturer may overship up to a maximum of 20 %. Fororders up t
11、o 1000 lb 450 kg, the manufacturer may overshipup to a maximum of 10 %. The permissible overshipment shallbe negotiated for orders larger than 1000 lb 450 kg.8. Workmanship, Finish, and Appearance8.1 The manufacturer shall use care to have each lot of ingotmaterial as uniform in quality as possible.
12、8.2 When specified, the ingots shall be conditioned on thesurface to standards agreed upon between the purchaser and themanufacturer.8.3 In the conditioned ingot, no abrupt changes in diameteror local depressions that will impair subsequent fabrication will1This specification is under the jurisdicti
13、on of ASTM Committee B10 onReactive and Refractory Metals and Alloys and is the direct responsibility ofSubcommittee B10.03 on Niobium and Tantalum.Current edition approved Oct. 1, 2018. Published October 2018. Originallyapproved in 1979. Last previous edition approved in 2010 as B652/B652M 10.DOI:
14、10.1520/B0652_B0652M-10R18.2For 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 website.3The last approved version of this
15、 historical standard is referenced onwww.astm.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the
16、Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1be permitted. The difference between maximum and minimumradius of the conditioned ingot shall not exceed 5 % of themaxi
17、mum radius. Lands, grooves, and local depressions shallbe blended to a maximum angle of 30 to the axis of the ingot.8.4 Each ingot should be tested for soundness by nonde-structive test methods, such as dye penetrant and ultrasonictests, as mutually agreed upon between the purchaser and themanufactu
18、rer.8.5 Defects in ingots that exceed the acceptance standardsshall be removed by cropping or surface conditioning, which-ever is appropriate. The manufacturer shall be permitted toremove surface imperfections provided that after such removal,the requirements of conditioning are met (8.3).8.6 The in
19、gots shall be free of imperfections that would bedeemed injurious by the standards of acceptability agreed uponbetween the purchaser and the manufacturer.9. Number of Tests9.1 Each ingot shall be tested for chemical composition in atleast three positions along the length of the ingot.10. Significanc
20、e of Numerical Limits10.1 The following applies to all specified limits in thisstandard for purposes of determining conformance with thisspecification: The observed value or a calculated value shall berounded off to the nearest unit in the last right-hand digit usedin expressing the specification li
21、mit, in accordance with therounding-off method of Practice E29.11. Sampling11.1 Care shall be exercised to ensure that the sampleselected for testing is representative of the material, and that itis not contaminated by the sampling procedure. If there is anyquestion relating to the sampling techniqu
22、es or to the analysisthereof, the methods for sampling and analysis shall be asagreed upon between the purchaser and the manufacturer.12. Rejection12.1 Material that fails to conform to the requirements ofthis specification may be rejected. Rejection shall be reportedto the producer or supplier prom
23、ptly and in writing. In case ofdissatisfaction with the results of the tests, the producer orsupplier may make claim for a rehearing.13. Rehearing13.1 In the event of disagreement between the manufacturerand the purchaser on the conformance of the material to therequirements of this specification or
24、 any special test specifiedby the purchaser, a mutually acceptable referee shall performthe tests in question. The results of the referees testing shall beused in determining conformance of the material to thisspecification.14. Certification14.1 A producers or suppliers certification shall be fur-ni
25、shed to the purchaser that the material was manufactured,sampled, tested, and inspected in accordance with this speci-fication and has been found to meet the requirements. A reportof the test results shall be furnished.15. Product Marking15.1 Each ingot shall be marked for identification by metaldie
26、 stamping the manufacturers ingot number on the top of theingot. Each box or skid shall be marked or tagged legibly andconspicuously with the number, type of material, ingotnumber(s), manufacturers identification, nominal size, and thegross, net, and tare weights.16. Packaging16.1 Unless otherwise s
27、pecified, material purchased underthis specification must be boxed or banded on skids in such amanner as to secure safe delivery to their destination whenproperly transported by any common carrier.17. Keywords17.1 niobium-hafnium alloy ingotsASTM International takes no position respecting the validi
28、ty 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 their own responsibility.This standard is subjec
29、t 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 should be addressed to ASTM International Headquarte
30、rs. 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 Standards, at the address shown below.This standard
31、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 610-832-9585 (phone), 610-832-9555 (fax), or service
32、astm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 1 Chemical Requirements (Ingot)Niobium-Hafnium Alloy Grade R04295ElementContent, Maximum Weight %(Except for Hf and Ti)Carbon 0.015Oxygen 0.025Nitrogen 0.010Hydrogen 0.0015Hafnium 911Titanium 0.71.3Zirconium 0.700Tungsten 0.500Tantalum 0.500Niobium by differenceB652/B652M 10 (2018)2
