1、Designation: B 364 96 (Reapproved 2002)Standard Specification forTantalum and Tantalum Alloy Ingots1This standard is issued under the fixed designation B 364; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revisio
2、n. 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 unalloyed and alloyed tanta-lum ingots prepared by vacuum-arc melting, electron-beammelting, or powder-
3、metallurgy consolidation to produce con-solidated metal for processing to various mill shapes.1.2 The materials covered by this specification are:1.2.1 R05200, unalloyed tantalum, electron-beam furnaceor vacuum-arc melt, or both,1.2.2 R05400, unalloyed tantalum, powder-metallurgy con-solidation,1.2.
4、3 R05255, tantalum alloy, 90 % tantalum 10 % tungsten,electron-beam furnace or vacuum-arc melt, or both,1.2.4 R05252, tantalum alloy, 97.5 % tantalum 2.5 % tung-sten, electron-beam furnace or vacuum-arc melt, or both, and,1.2.5 R05240 tantalum alloy, 60 % tantalum 40 % colum-bium, electron-beam furn
5、ace or vacuum-arc melt, or both.1.3 The values stated in inch-pound units are to be regardedas the standard. The values given in parentheses are forinformation only.2. Referenced Documents2.1 ASTM Standards:2E29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specific
6、ations3. Ordering Information3.1 Orders for material under this specification shall includethe following information as applicable:3.1.1 Type (see 1.2),3.1.2 Quantity in weight or pieces,3.1.3 Size, diameter, and length,3.1.4 Method of manufacture (Section 4),3.1.5 ASTM designation, and3.1.6 Additio
7、ns to the specification and supplementary re-quirements if required.4. Materials and Manufacture4.1 The ingot metal for Type R05200 (unalloyed tantalum),for Type R05255 (90 % tantalum 10 % tungsten alloy), TypeR05252 (97.5 % tantalum 2.5 % tungsten), and Type R05240(60 % tantalum 40 % columbium) may
8、 be vacuum-arc melted,electron-beam furnace melted, or a combination of these twomethods. The metal for Type R05400 is defined as powder-metallurgy consolidation unalloyed tantalum.5. Chemical Composition5.1 The material shall conform to the requirements forchemical composition in accordance with Ta
9、ble 1.5.1.1 Analysis for elements not listed in Table 1 and notnormally expected in tantalum shall not be required unlessspecified at time of purchase.5.2 In the event of dispute over conformity of the material tothis specification, upon agreement between the purchaser andthe seller as to procedure,
10、 representative samples of thematerial may be submitted to a referee for analysis.6. Permissible Variation6.1 QuantityThe permissible overshipment shall be nego-tiated between the purchaser and the manufacturer.7. Workmanship, Finish, and Appearance7.1 The manufacturer shall use care to have each lo
11、t of ingotmaterial as uniform in quality as possible.7.2 When specified, the ingots shall be conditioned on thesurface to standards agreed upon between the manufacturer andthe purchaser.7.3 In the conditioned ingot, no abrupt change in diameteror local depressions that will impair subsequent fabrica
12、tion willbe permitted. The difference between maximum and minimumradius of the conditioned ingot shall not exceed 20 % of themaximum radius.7.4 Each ingot shall be tested for soundness by nondestruc-tive test methods, such as dye penetrant and ultrasonic tests.Methods and acceptance standards shall
13、be as mutually agreedupon between the purchaser and the manufacturer.7.5 Defects in the ingots that exceed the acceptance stan-dards shall be removed by cropping or surface conditioning,whichever is appropriate. The manufacturer shall be permittedto remove surface imperfections provided that after e
14、achremoval the requirements of conditioning are met (see 7.3).1This specification is under the jurisdiction 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. 10, 1996. Publish
15、ed December 1996. Originallypublished as B 364 61 T. Last previous edition B 364 92.2For 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 p
16、age onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.7.6 The ingots shall be free of imperfections that would bedeemed injurious by the standards of acceptability agreed uponbetween the purchaser and the manufacture
17、r.8. Significance of Numerical Limits8.1 For the purpose of determining compliance with thespecified limit for requirements of the properties listed in thetables, an observed value or a calculated value shall be roundedas indicated in accordance with the rounding method ofPractice E29.9. Sampling9.1
18、 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 techniques or to the analysisthereof, the methods for sampling and analysis shall be asa
19、greed upon between the purchaser and the manufacturer.10. Rejection and Rehearing10.1 Material that fails to conform to the requirements ofthis specification may be rejected. Rejection should be reportedto the producer or supplier promptly and in writing. In case ofdissatisfaction with the results o
20、f the test, the producer orsupplier may make claim for a rehearing.11. Referee11.1 In the event of disagreement between the manufacturerand the purchaser on the conformance of the material to therequirements of this specification or any special test specifiedby the purchaser, a mutually acceptable r
21、eferee shall performthe tests in question. The results of the referees testing shall beused in determining the conformance of the material to thisspecification.12. Certification12.1 When specified in the purchase order or contract, aproducers or suppliers certificate shall be furnished to thepurchas
22、er that the material was manufactured, sampled, tested,and inspected in accordance with the specification and has beenfound to meet the requirements. When specified in the pur-chase order or contract, a report of the test results shall befurnished.13. Packaging and Package Marking13.1 Each ingot sha
23、ll be marked for identification by metaldie stamping the manufacturers ingot number on the top of theingot. Each box or skid shall be marked or tabbed legibly andconspicuously with the number, type of material, ingot num-ber(s), manufacturers identification, nominal size, and thegross, net, and tare
24、 weights.13.2 Unless otherwise specified, material purchased underthis specification must be boxed or banded on skids in such amanner as to secure safe delivery to its destination whenproperly transported by any common carrier.14. Keywords14.1 chemistry; mechanical properties; tantalum; tantalumallo
25、yTABLE 1 Chemical RequirementsElementContent, max, weight %Electron-Beam Cast(R05200) Vacuum-Arc Cast (R05200)Unalloyed TantalumSintered (R05400)Unalloyed TantalumElectron-Beam Cast(R05255) Vacuum-ArcCast (R05255) 90 %Tantalum 10 %TungstenElectron-Beam Cast(R05252) Vacuum-ArcCast (R05252) 97.5 %Tant
26、alum 2.5 %TungstenElectron-Beam Cast(R05240) Vacuum-ArcCast (R05240) 60 %Tantalum 40 %ColumbiumC 0.010 0.010 0.010 0.010 0.010O 0.015 0.03 0.015 0.015 0.020N 0.010 0.010 0.010 0.010 0.010H 0.0015 0.0015 0.0015 0.0015 0.0015Nb 0.10 0.10 0.10 0.50 34.040.0Fe 0.010 0.010 0.010 0.010 0.010Ti 0.010 0.010
27、 0.010 0.010 0.010W 0.050 0.050 9.011.0 2.03.5 0.50Mo 0.020 0.020 0.020 0.020 0.020Si 0.005 0.005 0.005 0.005 0.005Ni 0.010 0.010 0.010 0.010 0.010Ta remainder remainder remainder remainder remainderB 364 96 (2002)2ASTM International takes no position respecting the validity of any patent rights ass
28、erted 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 any time b
29、y 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 comments will rece
30、ive 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 by ASTM Inte
31、rnational, 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); or through the ASTM website(www.astm.org).B 364 96 (2002)3
