ASTM B393-2005 Standard Specification for Niobium and Niobium Alloy Strip Sheet and Plate《铌和铌合金带材、薄板及板材的标准规范》.pdf
《ASTM B393-2005 Standard Specification for Niobium and Niobium Alloy Strip Sheet and Plate《铌和铌合金带材、薄板及板材的标准规范》.pdf》由会员分享,可在线阅读,更多相关《ASTM B393-2005 Standard Specification for Niobium and Niobium Alloy Strip Sheet and Plate《铌和铌合金带材、薄板及板材的标准规范》.pdf(5页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: B 393 05Standard Specification forNiobium and Niobium Alloy Strip, Sheet, and Plate1This standard is issued under the fixed designation B 393; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.
2、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 five grades of wrought nio-bium and niobium alloy strip, sheet, and plate as follows:NOTE 1Committee B10 h
3、as adopted “niobium” as the designation forElement No. 41, formerly named “columbium.”1.1.1 R04200-Type 1Reactor grade unalloyed niobium,1.1.2 R04210-Type 2Commercial grade unalloyed nio-bium,1.1.3 R04251-Type 3Reactor grade niobium alloy con-taining 1 % zirconium, and1.1.4 R04261-Type 4Commercial g
4、rade niobium alloycontaining 1 % zirconium.1.1.5 R0xxxx-Type 5RRR grade pure niobium.NOTE 2This grade of niobium is used in superconducting applicationsthat require the ultra high purity. Because of the high purity the product isconducive to very large grains that can adversely affect formability. I
5、t isnot recommended for other applications.1.2 Except for dimensional tolerances in Table 1, the valuesstated in inch-pound units are to be regarded as the standard.The values given in parentheses are for information only.1.3 The following precautionary caveat pertains only to thetest methods portio
6、n of this specification. This standard doesnot purport to address all of the safety concerns, if any,associated with its use. It is the responsibility of the user of thisstandard to establish appropriate safety and health practicesand determine the applicability of regulatory limitations priorto use
7、.2. Referenced Documents2.1 ASTM Standards:2B 391 Specification for Niobium and Niobium Alloy IngotsE8 Test Methods for Tension Testing of Metallic MaterialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications3. Terminology3.1 Definitions of Terms Specif
8、ic to This Standard:3.1.1 lot, na lot shall consist of all material produced fromthe same ingot at one time, with the same cross section,processed with the same nominal metallurgical parameters andheat treated at the same conditions.3.1.2 plate, na flat product 6 in. (152.4 mm) or more inwidth and g
9、reater than316 in. (4.76 mm) in thickness.3.1.3 sheet, na flat product 6 in. (152.4 mm) or more inwidth and from 0.005 in. (0.13 mm) to316 in. (4.76 mm) inthickness.3.1.4 strip, na flat product, which may be supplied in coil,less than 6 in. (152.4 mm) in width and from 0.005 in. (0.13mm) to316 in. (
10、4.76 mm) in thickness.4. Ordering Information4.1 Orders for materials under this specification shall in-clude the following information as applicable:4.1.1 Type and grade (Section 1),4.1.2 ASTM designation and year of issue,4.1.3 Quantity in weight, number of pieces, and dimensions,4.1.4 Chemistry (
11、6.3),4.1.5 Temper designation (Section 8),4.1.6 Permissible overshipment (9.3),4.1.7 Quality and finish (10.3),4.1.8 Sampling (11.2),4.1.9 Inspection (Section 15),4.1.10 Required reports (Section 17),4.1.11 Marking (Section 18), and4.1.12 Additions to the specification and supplementaryrequirements,
12、 as required.5. Materials and Manufacture5.1 Material covered by this specification shall be madefrom ingots that conform to Specification B 391 and that areproduced by vacuum or plasma arc melting, vacuum electron-beam melting, or a combination of these three methods.1This specification is under th
13、e 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 May 1, 2005. Published June 2005. Originallyapproved in 1999. Last previous edition approved in 2003 as B 393 - 03.
14、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 Barr Harbor Drive, PO Box
15、C700, West Conshohocken, PA 19428-2959, United States.5.2 The various niobium mill products covered by thisspecification are formed with the conventional extrusion,forging, swaging, rolling, and drawing equipment normallyavailable in metal working plants.6. Chemical and Hardness Requirements Chemica
16、l andHardness Requirements6.1 The niobium and niobium alloy ingots and billets forconversion to finished products covered by this specificationshall conform to the requirements for chemical compositionand hardness as prescribed in Table 2 and Table 3.6.2 The manufacturers ingot analysis shall be con
17、sideredthe chemical analysis for products supplied under this specifi-cation, except for interstitials as specified in 6.3.6.3 When requested by the purchaser at the time of pur-chase, the manufacturer shall furnish a report certifying thevalues of the interstitial elements (C, O, N, H) as prescribe
18、d inTable 4 for each lot of material supplied.7. Mechanical Requirements7.1 The annealed materials supplied under this specificationshall conform to the requirements for mechanical properties asspecified in Table 5.8. Temper Designations8.1 Unless otherwise stated, the materials supplied underthese
19、specifications shall be in the fully annealed condition,that is, at least 90 % recrystallized.8.2 Other temper designations, such as cold-worked temperor stress-relieved temper, can be specified as agreed uponbetween the purchaser and the manufacturer at the time ofpurchase.9. Permissible Variations
20、 in Dimensions and Weight9.1 Tolerances for thickness, width, and length for flat-rolled products covered by this specification shall be asprescribed in Table 1.9.2 Flatness tolerance for sheet and plate products suppliedunder this specification shall be a maximum of 6 % (2 % forRRR grade sheet and
21、strip) as determined by the followingequation (see Fig. 1):Flatness, % 5 H/L! 3 100(1)where:H = maximum vertical distance between a flat referenceand the lower surface of the sheet, andL = minimum horizontal distance between the highestpoint on a sheet and the point of contact with a flatreference s
22、urface. (Fig. 1 is included to illustrate themethod for taking measurements for calculation ofsheet flatness. However, a value of H less than132 in.(0.070 mm) shall not be cause for rejection.)9.3 Quantity or WeightFor orders requiring up to 100 lb(45.4 kg) of finished product, the manufacturer may
23、overshipby 20 %. When the order is for quantities up to 1000 lb (453.6TABLE 1 Dimensional Tolerances for Niobium Flat-Rolled ProductsThickness of Material,in. (mm) in lower tableTolerance on ThicknessAplus orminus, in. (mm) in lower tableTolerance on Width (slit)Bplus orminus, in.(mm) in lower table
24、Tolerance on Sheared Lengths, in. (mm)Width under 6 in.or 152.4 mmWidth6to24in.or 152.4 to609.6 mmWidth under 6 in.or 152.4 mmWidth6to24in.or 152.4 to609.6 mmLength 12 in. or 304.8 mmand underLength over 12 in. or 304.8 mmPlus Minus Plus MinusInches0.005 to 0.010 excl 0.0005 0.001 0.012 .116 0332 00
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