1、Designation: B387 10B387 18Standard 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 revi
2、sion. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope Scope*1.1 This specification covers unalloyed molybdenum and molybdenum alloy bar, rod, and wire as follows:1.1.1 Molybdenum 360Un
3、alloyed vacuum arc-cast molybdenum.1.1.2 Molybdenum 361Unalloyed powder metallurgy molybdenum.1.1.3 Molybdenum Alloy 363Vacuum arc-cast molybdenum0.5 % titanium0.1 % zirconium (TZM) alloy.1.1.4 Molybdenum Alloy 364Powder metallurgy molybdenum0.5 % titanium0.1 % zirconium (TZM) alloy.1.1.5 Molybdenum
4、 365Unalloyed vacuum arc-cast molybdenum, low carbon.1.1.6 Molybdenum Alloy 366Vacuum arc-cast molybdenum, 30 % tungsten alloy.1.2 This specification covers wire no smaller than 0.020 in. (0.51 mm) in diameter or of equivalent cross-sectional area.Specification F289 covers diameters up to 0.020 in.
5、(0.51 mm).1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.1.3 The following precautionary caveat pertains only to the test method p
6、ortions of this specification: This standard does notpurport to address all of the safety concern, if any, associated with its use. It is the responsibility of the user of this standard toestablish appropriate safety and health practices and determine the applicability of regulatory limitations prio
7、r to use.1.4 The following precautionary caveat pertains only to the test method portions of this specification: This standard does notpurport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard toestablish appropriate safety,
8、 health, and environmental practices and determine the applicability of regulatory limitations priorto use.1.5 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of Interna
9、tional Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2E8 Test Methods for Tension Testing of Metallic Materials Metric E0008_E0008ME29 Practice for Using Significant Digits in Test Dat
10、a to Determine Conformance with SpecificationsE92 Test Methods for Vickers Hardness and Knoop Hardness of Metallic MaterialsE384 Test Method for Microindentation Hardness of MaterialsE2626E1941 Guide for Spectrometric Analysis of Reactive and Refractory MetalsTest Method for Determination of Carbon
11、inRefractory and Reactive Metals and Their Alloys by Combustion Analysis (Withdrawn 2017)F289 Specification for Molybdenum Wire and Rod for Electronic Applications3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 bar and rod, nany straight product with a round, rectangular, hexa
12、gonal, or octagonal solid cross section, 4 in. (101.6mm) in diameter or less, or of equivalent cross-sectional area.1 This specification is under the jurisdiction of ASTM Committee B10 on Reactive and Refractory Metals and Alloys and is the direct responsibility of SubcommitteeB10.04 on Molybdenum a
13、nd Tungsten.Current edition approved June 1, 2010July 1, 2018. Published July 2010September 2018. Originally approved in 1962. Last previous edition approved in 20012010 asB387 - 90 (2001)B387 which was withdrawn January 2010 and reinstated in June 2010. DOI: 10.1520/B0387-10. 10. DOI: 10.1520/B0387
14、-18.2 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 standardsstandards Document Summary page on the ASTM website.This document is not an ASTM standard and is int
15、ended 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 appropriate. In all cases only the curr
16、ent versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.1.2 wire, nany product furnis
17、hed in coils or on spools or reels.NOTE 1This specification covers wire no smaller than 0.020 in. (0.51 mm) in diameter or of equivalent cross-sectional area. Specification F289 coversdiameters up to 0.020 in. (0.51 mm).3.2 Lot Definition:3.2.1 for chemical composition, nthe product of a single blen
18、d of powder or a single vacuum melted ingot.3.2.2 for mechanical property measurement, nthe product manufactured from ingots sintered from either a single powder lotin a single sintering run in the same furnace or a single ingot, processed through the same processing equipment in a singleuninterrupt
19、ed run, using the same thermomechanical process to reach the same final size.4. Ordering Information4.1 Orders for material under this specification shall include the following information as applicable:4.1.1 Material number and temper designation (Section 1 and Table 3),4.1.2 Product form (Section
20、3),4.1.3 Chemical requirements (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 (Section 12),4.1.9 Di
21、sposition of rejected material (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 this specification shall be manufactured with the conventional extru
22、sion,forging, swaging, rolling, and drawing equipment normally found in primary ferrous and nonferrous plants. The ingot metal forMolybdenum 360 and 365 and Molybdenum Alloys 363 and 366 is vacuum arc-melted in furnaces of a type suitable for reactive,refractory metals. For Molybdenum 361 and 364 th
23、e metal is consolidated by powder metallurgy methods.6. Chemical Composition6.1 The molybdenum and molybdenum alloy ingots and billets for conversion to finished products covered by this specificationshall conform to the requirements of the chemical composition prescribed in Table 1.6.2 Heat Analysi
24、s:6.2.1 Heat analysis is made by the manufacturer of the metal on a representative sample of powder from a single powder blendin the case of material made from pressed and sintered powder billets, or on a representative sample of a cast ingot or intermediateproduct from that ingot in the case of mat
25、erial made from cast ingot.TABLE 1 Chemical RequirementsComposition, %Element Material NumberComposition, %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 maxC 0.030 max 0.010 max 0.0100.040 0.0100.040 0.010 max 0.030 maxO, maxA 0.0015 0.0070
26、 0.0030 0.030 0.0015 0.0025O, max 0.0020 0.0070 0.0030 0.050 0.0020 0.0025N, maxA 0.002 0.002 0.002 0.002 0.002 0.002N, max 0.0020 0.0020 0.0020 0.0020 0.0020 0.0020Fe, max 0.010 0.010 0.010 0.010 0.010 0.010Ni, max 0.002 0.005 0.002 0.005 0.002 0.002Ni, max 0.0020 0.005 0.0020 0.005 0.0020 0.002Si,
27、 max 0.010 0.010 0.010 0.005 0.010 0.010Si, max 0.010 0.010 0.010 0.010 0.010 0.010Ti . . 0.400.55 0.400.55 . .W . . . . . 2733Zr . . 0.060.12 0.060.12 . .Mo balance balance balance balance balance balanceA Pending approved methods of analysis. Deviations from these limits alone shall not be cause f
28、or rejection.B387 1826.2.2 Heat analysis shall be as specified in Table 1.6.2.3 The manufacturer shall not ship material that is outside the limits specified in Table 1 for the applicable type, with theexception of oxygen and nitrogen, whose percentage may vary with the method of fabrication.6.3 Che
29、ck Analysis:6.3.1 Check analysis is made by the purchaser or the manufacturer of the metal after it has been processed into finished millforms, and is either to verify the heat analysis of a heat or lot, or to determine variations in composition within a heat or lot.6.3.2 Check analysis tolerances d
30、o not broaden the specified heat analysis requirements but cover variations betweenlaboratories in the measurement of chemical content.6.3.3 Check analysis limits shall be as specified in Table 2.7. Metallurgical Condition7.1 Products shall be furnished in the wrought and stress relieved condition u
31、nless otherwise stated on the purchase order.8. Mechanical Properties8.1 Material supplied under this specification shall conform to the mechanical property requirements given in Table 3 whentested in the longitudinal direction of working at test temperatures between 65 and 85F (18.3 and 29.4C).9. T
32、hermal Stability9.1 If specified on the purchase order, the material supplied under this specification shall have mechanical properties not lowerthan those shown in Table 3 after reheating in a protective atmosphere to the following temperatures noted in Table 5 for a periodof 30 min;TABLE 2 Permiss
33、ible Variations in Check AnalysisMaterial No.Check AnalysisLimits, max orrange, %PermissibleVariations inCheck Analy-Analysis,sis, %C 360, 363, 364, 366, 361, 365 0.0100.0400.0100.0050.002C 361, 365 0.010 +0.002360, 366 0.030 +0.005363,364 0.0100.040 0.005O 360, 365 0.0020 +10 % relative366 0.0025 +
34、10 % relativeOA 361360, 363, 365, 3660.00700.0030+10 % relative+10 % relative363 0.0030 +10 % relative361 0.0070 +10 % relative364 0.030 +10 % relative364 0.050 +10 % relativeNA 361, 364, 365360, 363, 3660.00200.0010+0.0005+ 0.0005N 360, 361, 363, 364, 365,3660.0020 +0.0005Fe 360, 361, 363, 364, 365
35、, 366 0.010 +0.001Ni 360, 361, 363, 364, 365, 366 0.005 +0.0005Ni 360, 363, 365, 366 0.002 +10 % relative361, 364 0.005 +10 % relativeSi 360, 361, 363, 364, 365, 366 0.010 +0.002Ti 363, 364 0.400.55 0.05W 366 27.033.0 1.0Zr 363, 364 0.060.12 0.02A See Table 1, Footnote A. Negative variations in chec
36、k analysis are permitted.B387 183MolybdenumTypeF C3603613633643653661650165021002100165020009009001150115090011009.1.1 Acceptable atmospheres and purity requirements are:9.1.1.1 Hydrogen (maximum dew point 0C).9.1.1.2 Argon (maximum O content 5 ppm).9.1.1.3 Helium (maximum O content 5 ppm).9.1.1.4 V
37、acuum (maximum pressure 0.0133 Pa).TABLE 3 Mechanical Requirements for Round Bars and RodsAType TemperB Diameter, in. (mm)TensileStrength,min, ksi(MPa)YieldStrength,0.2 % Off-Offset,set, min, ksi(MPa)Elonga-Elongationtion in 1in. in.(50 mm)min, %Diamond Pyr-amid Hard-nessD (DPH),-10 kg,Vickers-10 kg
38、360, 361, 365 SR 0.020 to 18 (0.51 to 3.18), incl 85 (585) 65 (450) 15C .360, 361, 365 SR 0.020 to 0.125 (0.51 to 3.18), incl 85 (585) 65 (450) 15C .over 18 to 1332 (3.18 to 10.32) 75 (515) 55 (380) 15 .over 0.125 to 0.406 (3.18 to 10.32) 75 (515) 55 (380) 15 .over 1332 to 78 (10.32 to 22.2) 90 (620
39、) 75 (515) 18 230 to 280over 0.406 to 0.875 (10.32 to 22.2) 90 (620) 75 (515) 18 210 to 280over 78 to 118 (22.2 to 28.6) 85 (585) 70 (480) 15 225 to 270over 0.875 to 1.125 (22.2 to 28.6) 85 (585) 70 (480) 15 210 to 270over 118 to 178 (28.6 to 47.6) 75 (515) 65 (450) 10 215 to 260over 1.125 to 1.875
40、(28.6 to 47.6) 75 (515) 65 (450) 10 210 to 260over 178 to 278 (47.6 to 73.0) 70 (480) 60 (415) 10 210 to 250over 1.875 to 2.875 (47.6 to 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 240over 2.875 to 3.500 (73.0 to 88.9) 65 (450) 55 (380) 10 205 to 2
41、40363, 364 SR 316 to 78 (4.76 to 22.2), incl 115 (790) 100 (690) 18 260 to 320363, 364 SR 0.188 to 0.875 (4.76 to 22.2), incl 115 (790) 100 (690) 18 260 to 320over 78 to 118 (22.2 to 28.6) 110 (760) 95 (655) 15 250 to 310over 0.875 to 1.125 (22.2 to 28.6) 110 (760) 95 (655) 15 250 to 310over 118 to
42、178 (28.6 to 47.6) 100 (690) 85 (585) 10 245 to 300over 1.125 to 1.875 (28.6 to 47.6) 100 (690) 85 (585) 10 245 to 300over 178 to 278 (47.6 to 73.0) 90 (620) 80 (550) 10 240 to 290over 1.875 to 2.875 (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
43、 to 285over 2.875 to 3.500 (73.0 to 88.9) 85 (585) 75 (515) 5 235 to 285366 SR 316 to 78 (4.76 to 22.2), incl 95 (655) 80 (550) 5 240 to 300366 SR 0.188 to 0.875 (4.76 to 22.2), incl 95 (655) 80 (550) 2 240 to 300over 78 to 118 (22.2 to 28.6) 90 (620) 75 (515) 4 235 to 300over 0.875 to 1.125 (22.2 t
44、o 28.6) 90 (620) 75 (515) 2 235 to 300over 118 to 178 (28.6 to 47.6) 85 (585) 70 (480) 3 230 to 290over 1.125 to 1.875 (28.6 to 47.6) 85 (585) 70 (480) 2 230 to 290over 178 to 278 (47.6 to 73.0) 80 (550) 65 (450) 3 230 to 290over 1.875 to 2.875 (47.6 to 73.0) 80 (550) 65 (450) 2 230 to 290over 278 t
45、o 312 (73.0 to 88.9) 75 (515) 60 (415) 2 225 to 290over 2.875 to 3.500 (73.0 to 88.9) 75 (515) 60 (415) 2 225 to 290360 RX Under 2 (50.8)2 to 312 (50.8 to 88.9)60 (415)55 (380)35 (240)25 (170)2020200 max200 max360 RX Under 2 (50.8)2 to 3.500 (50.8 to 88.9)60 (415)55 (380)35 (240)25 (170)2020200 max2
46、00 max363, 364 RX Under 2 (50.8)2 to 312 (50.8 to 88.9)80 (550)75 (515)55 (380)45 (310)2010215 max215 max363, 364 RX Under 2 (50.8)2 to 3.500 (50.8 to 88.9)80 (550)75 (515)55 (380)45 (310)2010215 max215 maxA Mechanical properties of all bars, and rods other than round, shall be as agreed upon betwee
47、n the manufacturer and the purchaser.B SR = stress-relieved; RX = essentially fully recrystallized.C The gage length is 10 in. (254 mm) for rods 0.020 to 18 in.0.125 in. (0.51 to 3.18 min) in diameter only. All other elongation values are for 1-in. (25-mm) gage lengths.D In the case where the test s
48、ample thickness cannot support 10-kg load without causing “anvil effects,” a lighter load may be used, but must be reported with the hardnessresults.B387 1849.1.2 Nitrogen is not an acceptable atmosphere for annealing molybdenum or molybdenum alloys.10. Significance of Numerical Limits10.1 For the p
49、urpose of determining compliance with the specified property requirements listed in Tables 1-4, an observedcalculated value shall be rounded as indicated in the following table, in accordance with the rounding methods of Practice E29.Property Rounded Unit for Observed orCalculated ValuesChemical composition andtolerances (when expressedin decimals)Nearest unit in the last right-hand placeof figures of the specified limitTensile strength and yield strength Nearest 1000 psi (MPa)Tensile strength and y
