1、Designation: B387 10Standard Specification forMolybdenum and Molybdenum Alloy Bar, Rod, and Wire1This standard is issued under the fixed designation B387; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A
2、 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 molybdenum andmolybdenum alloy bar, rod, and wire as follows:1.1.1 Molybdenum 360Unalloyed vacuum
3、arc-cast mo-lybdenum.1.1.2 Molybdenum 361Unalloyed powder metallurgy mo-lybdenum.1.1.3 Molybdenum Alloy 363Vacuum arc-cast molybde-num0.5 % titanium0.1 % zirconium (TZM) alloy.1.1.4 Molybdenum Alloy 364Powder metallurgy molyb-denum0.5 % titanium0.1 % zirconium (TZM) alloy.1.1.5 Molybdenum 365Unalloy
4、ed vacuum arc-cast mo-lybdenum, low carbon.1.1.6 Molybdenum Alloy 366Vacuum arc-cast molybde-num, 30 % tungsten alloy.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onl
5、yand are not considered standard.1.3 The following precautionary caveat pertains only to thetest method portions of this specification: This standard doesnot purport to address all of the safety concern, if any,associated with its use. It is the responsibility of the user of thisstandard to establis
6、h appropriate safety and health practicesand determine the applicability of regulatory limitations priorto use.2. Referenced Documents2.1 ASTM Standards:2E8 Test Methods for Tension Testing of Metallic MaterialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Speci
7、ficationsE2626 Guide for Spectrometric Analysis of Reactive andRefractory MetalsF289 Specification for Molybdenum Wire and Rod forElectronic Applications3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 bar and rod, nany straight product with a round,rectangular, hexagonal, or o
8、ctagonal solid cross section, 4 in.(101.6 mm) in diameter or less, or of equivalent cross-sectionalarea.3.1.2 wire, nany product furnished in coils or on spools orreels.NOTE 1This specification covers wire no smaller than 0.020 in. (0.51mm) in diameter or of equivalent cross-sectional area. Specific
9、ation F289covers diameters up to 0.020 in. (0.51 mm).4. Ordering Information4.1 Orders for material under this specification shall includethe following information as applicable:4.1.1 Material number and temper designation (Section 1and Table 3),4.1.2 Product form (Section 3),4.1.3 Chemical requirem
10、ents (Table 1 and Table 2),4.1.4 Metallurgical condition (Section 7),4.1.5 Mechanical requirements (Section 8),4.1.6 Thermal stability (Section 9),4.1.7 Tolerances (Section 10 and Section 11 and Table 4),4.1.8 Workmanship and quality level requirements (Section12),4.1.9 Disposition of rejected mater
11、ial (Section 14),4.1.10 Certification and reports (Section 15),4.1.11 Marking (Section 16), and4.1.12 Packaging (Section 17).5. Materials and Manufacture5.1 The various molybdenum mill products covered by thisspecification shall be manufactured with the conventionalextrusion, forging, swaging, rolli
12、ng, and drawing equipmentnormally found in primary ferrous and nonferrous plants. Theingot metal for Molybdenum 360 and 365 and MolybdenumAlloys 363 and 366 is vacuum arc-melted in furnaces of a type1This specification is under the jurisdiction of ASTM Committee B10 onReactive and Refractory Metals
13、and Alloys and is the direct responsibility ofSubcommittee B10.04 on Molybdenum and Tungsten.Current edition approved June 1, 2010. Published July 2010. Originally approvedin 1962. Last previous edition approved in 2001 as B387 - 90 (2001) which waswithdrawn January 2010 and reinstated in June 2010.
14、 DOI: 10.1520/B0387-10.2For 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.1Copyright ASTM International, 100 Bar
15、r Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.suitable for reactive, refractory metals. For Molybdenum 361and 364 the metal is consolidated by powder metallurgymethods.6. Chemical Composition6.1 The molybdenum and molybdenum alloy ingots andbillets for conversion to fi
16、nished products covered by thisspecification shall conform to the requirements of the chemicalcomposition prescribed in Table 1.6.2 Heat Analysis:6.2.1 Heat analysis is made by the manufacturer of the metalon a representative sample of powder from a single powderblend in the case of material made fr
17、om pressed and sinteredpowder billets, or on a representative sample of a cast ingot orintermediate product from that ingot in the case of materialmade from cast ingot.6.2.2 Heat analysis shall be as specified in Table 1.6.2.3 The manufacturer shall not ship material that isoutside the limits specif
18、ied in Table 1 for the applicable type,with the exception of oxygen and nitrogen, whose percentagemay vary with the method of fabrication.6.3 Check Analysis:6.3.1 Check analysis is made by the purchaser or themanufacturer of the metal after it has been processed intofinished mill forms, and is eithe
19、r to verify the heat analysis ofa heat or lot, or to determine variations in composition withina heat or lot.6.3.2 Check analysis tolerances do not broaden the specifiedheat analysis requirements but cover variations between labo-ratories in the measurement of chemical content.6.3.3 Check analysis l
20、imits shall be as specified in Table 2.7. Metallurgical Condition7.1 Products shall be furnished in the wrought and stressrelieved condition unless otherwise stated on the purchaseorder.8. Mechanical Properties8.1 Material supplied under this specification shall conformto the mechanical property req
21、uirements given in Table 3 whentested in the longitudinal direction of working at test tempera-tures between 65 and 85F (18.3 and 29.4C).9. Thermal Stability9.1 If specified on the purchase order, the material suppliedunder this specification shall have mechanical properties notlower than those show
22、n in Table 3 after reheating in aprotective atmosphere to the following temperatures for aperiod of 30 min;MolybdenumTypeF C36036136336436536616501650210021001650200090090011501150900110010. Significance of Numerical Limits10.1 For the purpose of determining compliance with thespecified property req
23、uirements listed in Tables 1-4,anob-served calculated value shall be rounded as indicated in thefollowing table, in accordance with the rounding methods ofPractice E29.Property Rounded Unit for Observed orCalculated ValuesChemical composition andtolerances (when expressedin decimals)Nearest unit in
24、the last right-hand placeof figures of the specified limitTensile strength and yield strength Nearest 1000 psi (MPa)Elongation Nearest 1 %TABLE 1 Chemical RequirementsComposition, %Element Material Number360 361 363 364 365 366C 0.030 max 0.010 max 0.0100.030 0.0100.040 0.010 max 0.030 maxO, maxA0.0
25、015 0.0070 0.0030 0.030 0.0015 0.0025N, maxA0.002 0.002 0.002 0.002 0.002 0.002Fe, max 0.010 0.010 0.010 0.010 0.010 0.010Ni, max 0.002 0.005 0.002 0.005 0.002 0.002Si, max 0.010 0.010 0.010 0.005 0.010 0.010Ti . . 0.400.55 0.400.55 . .W . . . . . 2733Zr . . 0.060.12 0.060.12 . .Mo balance balance b
26、alance balance balance balanceAPending approved methods of analysis. Deviations from these limits alone shall not be cause for rejection.TABLE 2 Permissible Variations in Check AnalysisMaterial No.Check AnalysisLimits, max orrange, %PermissibleVariations inCheck Analy-sis, %C 360, 363, 364, 366, 361
27、, 365 0.0100.0400.01060.00560.002OA361360, 363, 365, 3660.00700.0030+10 % relative+10 % relative364 0.030 +10 % relativeNA361, 364, 365360, 363, 3660.00200.0010+0.0005+ 0.0005Fe 360, 361, 363, 364, 365, 366 0.010 +0.001Ni 360, 361, 363, 364, 365, 366 0.005 +0.0005Si 360, 361, 363, 364, 365, 366 0.01
28、0 +0.002Ti 363, 364 0.400.55 60.05W 366 27.033.0 61.0Zr 363, 364 0.060.12 60.02ASee Table 1, Footnote A. Negative variations in check analysis are permitted.B387 10211. Permissible Variations in Dimensions11.1 Diameter and out-of-round tolerances on molybdenumand molybdenum alloy products covered by
29、 this specificationshall be as specified in Table 4.11.2 Length and straightness tolerances and limitations shallbe as follows:11.2.1 Cut lengths, 614 in. (6.35 mm).11.2.2 Straightness, maximum deviation of 0.050 in./ft(4.17 mm/m) in any length.11.3 Permissible variations in dimensions for wire, squ
30、are,or rectangular bars, and hexagonal or octagonal rods, shall beas agreed upon between the manufacturer and the purchaser.12. Workmanship, Finish and Appearance12.1 Cracks, seams, slivers, blisters, burrs, and other inju-rious imperfections shall not exceed standards of acceptabilityagreed upon by
31、 the manufacturer and the purchaser.TABLE 3 Mechanical Requirements for Round Bars and RodsAType TemperBDiameter, in. (mm)TensileStrength,min, ksi(MPa)YieldStrength,0.2 % Off-set, min, ksi(MPa)Elonga-tionin1in. (50 mm)min, %Diamond Pyr-amid Hard-ness (DPH),Vickers-10 kg360, 361, 365 SR 0.020 to18 (0
32、.51 to 3.18), incl 85 (585) 65 (450) 15C.over18 to1332 (3.18 to 10.32) 75 (515) 55 (380) 15 .over1332 to78 (10.32 to 22.2) 90 (620) 75 (515) 18 230 to 280over78 to 118 (22.2 to 28.6) 85 (585) 70 (480) 15 225 to 270over 118 to 178 (28.6 to 47.6) 75 (515) 65 (450) 10 215 to 260over 178 to 278 (47.6 to
33、 73.0) 70 (480) 60 (415) 10 210 to 250over 278 to 312 (73.0 to 88.9) 65 (450) 55 (380) 10 205 to 240363, 364 SR316 to78 (4.76 to 22.2), incl 115 (790) 100 (690) 18 260 to 320over78 to 118 (22.2 to 28.6) 110 (760) 95 (655) 15 250 to 310over 118 to 178 (28.6 to 47.6) 100 (690) 85 (585) 10 245 to 300ov
34、er 178 to 278 (47.6 to 73.0) 90 (620) 80 (550) 10 240 to 290over 278 to 312 (73.0 to 88.9) 85 (585) 75 (515) 5 235 to 285366 SR316 to78 (4.76 to 22.2), incl 95 (655) 80 (550) 5 240 to 300over78 to 118 (22.2 to 28.6) 90 (620) 75 (515) 4 235 to 300over 118 to 178 (28.6 to 47.6) 85 (585) 70 (480) 3 230
35、 to 290over 178 to 278 (47.6 to 73.0) 80 (550) 65 (450) 3 230 to 290over 278 to 312 (73.0 to 88.9) 75 (515) 60 (415) 2 225 to 290360 RX Under 2 (50.8)2to312 (50.8 to 88.9)60 (415)55 (380)35 (240)25 (170)2020200 max200 max363, 364 RX Under 2 (50.8)2to312 (50.8 to 88.9)80 (550)75 (515)55 (380)45 (310)
36、2010215 max215 maxAMechanical properties of all bars, and rods other than round, shall be as agreed upon between the manufacturer and the purchaser.BSR = stress-relieved; RX = essentially fully recrystallized.CThe gage length is 10 in. (254 mm) for rods 0.020 to18 in. (0.51 to 3.18 min) in diameter
37、only. All other elongation values are for 1-in. (25-mm) gage lengths.TABLE 4 Permissible Variations in Diameter and Limits of Tolerance Out-of-Round for Rolled, Forged, Extruded, Swaged, or DrawnRounds (Descaled)Diameter, in. (mm)Permissible Variation, in. (mm)DiameterOut-of-Round+0.020 to116 (0.51
38、to 1.59)Over116 to932 (1.59 to 7.14)0.001 (0.02)0.002 (0.05)0.001 (0.02)0.002 (0.05)0.001 (0.02)0.004 (0.10)Over932 to1332 (7.14 to 10.32) 0.010 (0.25) 0.005 (0.13) 0.008 (0.20)Over1332 to58 (10.32 to 15.9) 0.010 (0.25) 0.005 (0.13) 0.012 (0.30)Over58 to78 (15.9 to 22.2) 0.015 (0.38) 0.005 (0.13) 0.
39、015 (0.38)Over78 to 1 (22.2 to 25.4)Over 1 to 138 (25.4 to 34.9)0.020 (0.51)0.020 (0.51)0.005 (0.13)0.010 (0.25)0.015 (0.38)0.018 (0.46)Over 138 to 112 (34.9 to 38.1) 0.020 (0.51) 0.015 (0.38) 0.020 (0.51)Over 112 to 158 (38.1 to 41.3) 0.025 (0.64) 0.015 (0.38) 0.020 (0.51)Over 158 to 2 (41.3 to 50.
40、8)Over 2 to 212 (50.8 to 63.5)0.030 (0.76)0.032 (0.81)0.020 (0.51)0.032 (0.81)0.025 (0.64)0.025 (0.64)Over 212 to 314 (63.5 to 82.6) 0.032 (0.81) 0.032 (0.81) 0.027 (0.69)Over 314 to 312 (82.6 to 88.9) 0.045 (1.14) 0.045 (1.14) 0.040 (1.02)Centerless Ground Rounds116 to12 (1.58 to 12.7)Over12 (12.7)
41、0.002 (0.05)0.003 (0.08)0.002 (0.05)0.003 (0.08).B387 10312.2 Methods of testing for these defects and standards ofacceptability shall be as agreed upon between the manufacturerand the purchaser.12.3 Material may be finished as forged, rolled, swaged, ordrawn (black), as cleaned, as machined, or as
42、ground. Thefinish to be supplied for any product shall be agreed uponbetween the manufacturer and the purchaser.12.4 The manufacturer shall be permitted to remove surfaceimperfections provided such removal does not reduce thedimension below the minimum permitted by the tolerance forthe dimension spe
43、cified.13. Sampling and Test Methods13.1 Sampling:13.1.1 Care shall be exercised to ensure that the analyticalsample selected for testing is representative of the material andform and is not contaminated by the sampling procedure.13.1.2 Samples for mechanical testing shall be taken fromthe finished
44、material after all metallurgical processing iscompleted. Samples may be taken prior to final inspection, andshall be representative of the finished product.13.2 Chemical Analysis:13.2.1 Analysis may be made using the manufacturersstandard methods. If there is any question relating to thesampling tec
45、hnique or the analysis of the sample, the methodsof sampling and analysis shall be as agreed upon between thepurchaser and the manufacturer.13.2.2 Guide E2626 can provide guidance regarding appro-priate analytical techniques.13.3 Mechanical Testing:13.3.1 Tension test specimens shall be prepared and
46、 testedin accordance with Test Methods E8. Tensile properties shallbe determined using a strain rate of 0.002 to 0.005 in./in.min(or mm/mmmin) for sufficient strain to accurately determine a0.2 % offset yield strength value, and 0.02 to 0.05 in./in.min(or mm/mmmin) to fracture.14. Rejection and Refe
47、ree14.1 Material not conforming to this specification or toauthorized modifications may be rejected. Rejection for failureof the material to meet the requirements of this specificationshall be reported to the manufacturer within 30 calendar daysfrom the receipt of the material by the purchaser.14.2
48、Unless otherwise specified, rejected material may bereturned to the manufacturer at the manufacturers expense,unless the purchaser receives, within three weeks of the noticeof rejection, other instructions for disposition.14.3 In the event of disagreement between the manufacturerand the purchaser on
49、 the conformance of the material to therequirements of this specification or 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.15. Certification15.1 The manufacturer shall supply at least one copy of thereport certifying that the material supplied has been manufac-tured, inspected, sampled, and tested in accordance w
