1、Designation: B365 98 (Reapproved 2004)B365 12Standard Specification forTantalum and Tantalum Alloy Rod and Wire1This standard is issued under the fixed designation B365; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of l
2、ast 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 unalloyed and alloyed tantalum rod and wire.1.2 The materials covered by this specification a
3、re:1.2.1 R05200, unalloyed tantalum, electron-beam furnace or vacuum-arc melt, or both,1.2.2 R05400, unalloyed tantalum, powder-metallurgy consolidation,1.2.3 R05255, tantalum alloy, 90 % tantalum, 10 % tungsten, electron-beam furnace or vacuum-arc melt, or both,1.2.4 R05252, tantalum alloy, 97.5 %
4、tantalum, 2.5 % tungsten, electron-beam furnace or vacuum-arc melt, or both, and1.2.5 R05240 tantalum alloy, 60 % tantalum, 40 % columbium,niobium, electron-beam furnace or vacuum-arc melt, or both.1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in pare
5、ntheses are for informationonly.mathematical conversions to SI units that are provided for information only and are not considered standard.1.4 The following precautionary caveat pertains only to the test methods portion, Section 13, of this specification:This standarddoes not purport to address all
6、 of the safety problems, if any, associated with its use. It is the responsibility of the user of thisstandard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2E8 Test Methods for Te
7、nsion Testing of Metallic MaterialsE29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 lot, nall material produced from the same ingot or a single powder blend at one time, with the
8、same cross section andwith the same nominal metallurgical parameters.3.1.2 rod, nmaterial 0.125 to 2.5 in. (3.18 to 63.50 mm) in diameter in round, hexagonal, or octagonal cross section suppliedin straight lengths.3.1.3 wire, nmaterial 0.010 to 0.124 in. (0.254 to 3.15 mm) in diameter furnished in c
9、oils or on spools or reels. Material lessthan 0.010 in. in diameter is not covered by this specification.4. Ordering Information4.1 Orders for material under this specification shall include the following information as applicable:4.1.1 Quantity (weight or number of pieces),4.1.2 Name of material (t
10、antalum rod or wire),4.1.3 Type (see 1.2),4.1.4 Method of manufacture (Section 5),4.1.5 ASTM designation,4.1.6 Finish and appearance (Section 9), and4.1.7 Additions to the specification and supplementary requirements if required.1 This specification is under the jurisdiction of ASTM Committee B10 on
11、 Reactive and Refractory Metals and Alloys and is the direct responsibility of SubcommitteeB10.03 on Niobium and Tantalum.Current edition approved May 1, 2004Dec. 1, 2012. Published May 2004January 2013. Originally approved in 1961. Last previous edition approved in 19982004 asB365 98.B365 98 (2004)
12、. DOI: 10.1520/B0365-98R04.10.1520/B0365-12.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is
13、not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropri
14、ate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States15. Materials and Manufacture5.1 Material covered by this specific
15、ation shall be made from vacuum-arc melted or electron-beam melted ingots orpowder-metallurgy consolidated unalloyed tantalum.5.2 The various tantalum mill products covered by this specification are formed with the conventional extrusion, forming,swaging, rolling, and drawing equipment normally avai
16、lable in metal working plants.6. Chemical Composition6.1 The tantalum and tantalum alloy ingots and the tantalum powder-metallurgy consolidated ingots for conversion to finishedproducts covered by this specification shall conform to the requirements for chemical composition as prescribed in Table 1.
17、6.1.1 Analysis for elements not listed in Table 1 and not normally expected in tantalum shall not be required unless specifiedat time of purchase.6.2 The manufacturers ingot analysis shall be considered the chemical analysis for products supplied under this specification.6.3 When requested by the pu
18、rchaser at the time of purchase, the seller shall furnish a report certifying the values of carbon,oxygen, nitrogen, and hydrogen as specified in Table 2 for each lot of material supplied. The performance of this special provisionwill be negotiated.7. Mechanical Properties7.1 Materials supplied unde
19、r this specification shall conform to the requirements for mechanical properties as specified in Table3.7.2 The performance of mechanical tests to this requirement will be negotiated at time of purchase.8. Dimensions, Mass, and Permissible Variations8.1 Tolerances on RoundsTolerances on tantalum and
20、 tantalum alloy round products covered by this specification shall be asspecified in Table 4.8.2 Tolerances for Square, Rectangular, or Other ShapesTolerances for forged or rolled square, rectangular, or other shapesshall be as agreed upon between purchaser and seller at the time of purchase.8.3 Oth
21、er Tolerances and Limitations:8.3.1 The permissible variation in cut lengths shall not exceed a total of 0.25 in. (6.35 mm).8.3.2 The permissible variation in straightness of rounds shall not exceed 0.050 in. (1.27 mm)/ft (304.8 mm) in any length.8.4 Quantity or WeightFor orders requiring up to 100
22、lb (45.4 kg), the manufacturer may overship by 10 %. When the orderis for quantities up to 500 lb (226.8 kg), the manufacturer may overship by 5 %. The permissible overship for quantities larger thanthis shall be negotiated between the purchaser and the manufacturer.9. Workmanship, Finish, and Appea
23、rance9.1 The finished rod and wire shall be free of injurious external and internal imperfections of a nature that will interfere withthe purpose for which it is intended in accordance with standards of acceptability agreed upon between the manufacturer and thepurchaser.TABLE 1 Chemical Requirements
24、ElementContent, max, weight %Electron-BeamCast (R05200)Vacuum-Arc Cast(R05200) UnalloyedTantalumSintered(R05400)UnalloyedTantalumElectron-BeamCast (R05255)Vacuum-Arc Cast(R05255) 90 %Tantalum 10 %TungstenElectron-BeamCast (R05252)Vacuum-Arc Cast(R05252) 97.5 %Tantalum 2.5 %TungstenElectron-BeamCast
25、(R05240)Vacuum-Arc Cast(R05240) 60 %Tantalum 40 %ColumbiumNiobiumC 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 35.042.0Fe 0.010 0.010 0.010 0.010 0.010Ti 0.010 0.010 0.010 0.010 0.010W 0.050 0.05
26、0 9.011.0 2.03.5 0.050Mo 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 remainderB365 1229.2 Material may be finished as forged, rolled, swaged, drawn in the as-cleaned, as-machined, or as-ground conditions. The
27、manufacturer shall be permitted to remove minor surface imperfections provided such removal does not reduce the dimensionsbelow the minimum permitted by the tolerances established in Section 8 of this specification.9.3 Methods of testing for defects and standards of acceptability shall be as agreed
28、upon between the manufacturer and thepurchaser at time of purchase.TABLE 2 Additional Chemical Requirements for Finished Product (When Specified by the Purchaser)Content, max, % weight GradesElectron-Beam Case Electron-Beam Cast Electron-Beam-Cast Electron-Beam CastElement (R05200) Vacuum- Sintered
29、(R05400) (R05255) Vacuum- (R05252) Vacuum- (R05240) Vacuum-Arc Cast (R05200) Unalloyed Arc Cast (R05255) Arc Cast (R05252) Arc Cast (R05240)Unalloyed Tantalum 90 % Tantalum 97.5 % Tantalum 60 % TantalumTantalum 10 % Tungsten 2.5 % Tungsten 40 % ColumbiumTantalum 10 % Tungsten 2.5 % Tungsten 40 % Nio
30、biumO 0.025 0.035 0.025 0.025 0.025N 0.010 0.010 0.010 0.010 0.010H 0.0015 0.0015 0.0015 0.0015 0.0015C 0.020 0.020 0.020 0.020 0.020TABLE 3 Mechanical Properties for Rod and Wire, Annealed ConditionRod0.125 in. (3.18 mm) to 2.5 in. (63.5 mm) DiameterElongation,Ultimate Tensile Strength, min, psi Yi
31、eld Strength, min, % 1 in.(MPa) min, psi (MPa) (25.4 mm)Gage LengthUnalloyed tantalum (R05200 and R05400) 25 000 (172) 15 000 (103) 2597.5 % tantalum 2.5 % tungsten (R05252) 40 000 (276) 28 000 (193) 2090 % tantalum 10 % tungsten R05255 70 000 (482) 55 000 (379) 2060 % tantalum 40 % columbium (R0524
32、0) 35 000 (244) 15 000 (103) 2560 % tantalum 40 % niobium (R05240) 35 000 (244) 15 000 (103) 25Ultimate Tensile ElongationDiameter, in. (mm) Strength, min, psi min, %A(MPa)Unalloyed tantalum (R05200 and R05400) 0.010 (0.254) to 0.0149 (0.379)0.015 (0.381) to 0.0249 (0.633)0.025 (0.635) to 0.124 (3.1
33、4)35 000 (241)35 000 (241)30 000 (207)10152097.5 % tantalum 2.5 % tungsten (R05252) 0.010 (0.254) to 0.0149 (0.379)0.015 (0.381) to 0.0249 (0.633)0.025 (0.635) to 0.124 (3.14)40 000 (276)40 000 (276)40 000 (276)5101590 % tantalum 10 % tungsten (R05255) 0.010 (0.254) to 0.0149 (0.379)0.015 (0.381) to
34、 0.0249 (0.633)0.025 (0.635) to 0.124 (3.14)70 000 (482)70 000 (482)70 000 (482)5101560 % tantalum 40 % columbium (R05240) 0.010 (0.254) to 0.0149 (0.379)0.015 (0.381) to 0.0249 (0.633)0.025 (0.635) to 0.124 (3.14)35 000 (244)35 000 (244)35 000 (244)10152060 % tantalum 40 % niobium (R05240) 0.010 (0
35、.254) to 0.0149 (0.379)0.015 (0.381) to 0.0249 (0.633)0.025 (0.635) to 0.124 (3.14)35 000 (244)35 000 (244)35 000 (244)101520A 10-in. (254-mm) gage length to 0.050 in. (1.27-mm) diameter and 1-in. (25.4-mm) or 2-in. (50.8-mm) gage length over 0.050-in. (1.27-mm) diameter.TABLE 4 Permissible Variatio
36、ns in Dimensions for Rolled,Swaged or Drawn Rod and WireDiameter, in. (mm) Tolerance, , in.(mm)0.010 to 0.020 excl (0.254 to 0.508) 0.0005 (0.013)0.020 to 0.030 excl (0.508 to 0.762) 0.00075 (0.019)0.030 to 0.060 excl (0.762 to 1.524) 0.001 (0.025)0.060 to 0.090 excl (1.524 to 2.286) 0.0015 (0.038)0
37、.090 to 0.125 excl (2.286 to 3.175) 0.002 (0.051)0.125 to 0.187 excl (3.175 to 4.750) 0.003 (0.076)0.187 to 0.375 excl (4.750 to 9.525) 0.004 (0.102)0.375 to 0.500 excl (9.525 to 12.70) 0.005 (0.127)0.500 to 0.625 excl (12.70 to 15.88) 0.007 (0.178)0.625 to 0.750 excl (15.88 to 19.05) 0.008 (0.203)0
38、.750 to 1.000 excl (19.05 to 25.40) 0.010 (0.254)1.000 to 1.500 excl (25.40 to 38.10) 0.015 (0.381)1.500 to 2.000 excl (38.10 to 50.80) 0.020 (0.508)2.000 to 2.500 excl (50.80 to 63.50) 0.030 (0.762)B365 12310. Sampling10.1 Samples shall be taken from the material to determine conformity to this spe
39、cification. The samples shall be taken so asto be representative of the finished products.10.2 Care shall be taken to ensure that the sample selected for testing is representative of the material, and that it is notcontaminated by the sampling procedure. If there is any question relating to the samp
40、ling technique, or to the testing thereof, themethods of sampling and testing shall be as agreed upon between the purchaser and the manufacturer.11. Number of Tests11.1 If mechanical testing is required (7.2), perform a longitudinal or transverse tension test on each lot of rod and a longitudinalten
41、sion test on each lot of wire.11.2 If end-product chemical tests are required (6.3), make one chemical test from each lot of finished product.12. Significance of Numerical Limits12.1 For the purpose of determining compliance with the specified limits for requirements on the properties listed in this
42、specification, observed and calculated values shall be rounded as indicated by the rounding method of Practice E29.13. Test Methods13.1 Tension TestsPrepare and test test specimens in accordance with Test Methods E8. Determine tensile properties using astrain rate of 0.003 to 0.007 in./(in.min) to t
43、he yield point and 0.02 to 0.05 in./(in.min) to failure.13.2 Chemical TestsConduct the chemical analysis in accordance with established methods.13.3 RetestsIf any sample or specimen exhibits obvious surface contamination or improper preparation disqualifying it as atruly representative sample, disca
44、rd it and substitute a new sample or specimen.13.3.1 In case of a failure, retest two additional specimens. If both retest specimens conform to this specification, discard theoriginal values and consider the material acceptable.13.3.2 If the results of the tests are not in conformance with the requi
45、rements of this specification, a lot may be reworked atthe option of the manufacturer. The lot shall be acceptable if results of all tests, after reworking, conform to this specification.14. ReportsCertifications14.1 If requested, the The manufacturer shall supply at least three copiesone copy of a
46、report of the chemical analysis andreports of the results of tests of representative finished product to determine properties required in Section 13. The reports shouldinclude the purchase order number, this specification number, and the quantity and number of items covered in the shipment anda stat
47、ement that the material was manufactured, sampled, tested, and inspected in accordance with the specification and has beenfound to meet the requirements.certifying that the material supplied has been manufactured, inspected, sampled, and tested inaccordance with the requirements of this standard and
48、 that the results of chemical analysis, tensile and other tests meet therequirements of this standard for the grade specified. The report shall include results of all chemical analysis, tensile tests and allother tests required by the standard including additional optional tests specified in the sta
49、ndard when requested by the purchaserat the time of purchase.15. Inspection15.1 The manufacturer shall inspect the material covered by this specification prior to the shipment.15.2 If so specified on the purchase order, the purchaser or his representative may witness the testing and inspection of thematerial at the place of manufacture. In such cases, the purchase order shall indicate which test or tests to be witnessed and themanufacturer shall give ample notice to the purchaser as to the time and place of the designated test. If the purchasersrepresentative
