1、Designation:B87206(Reapproved 2016)Standard Specification forPrecipitation-Hardening Nickel Alloys Plate,Sheet,andStrip1This standard is issued under the fixed designation B872;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year
2、 of last 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 rolled precipitation hardenablenickel-iron-chromium-columbium(Nb)-titanium-aluminum al-loy(N0
3、9908)plate,sheet,and strip in the annealed condition(temper).This alloy is used as sheathing for super conductorcables,as tooling for fabrication of such cables,and for otherapplications requiring a material with low coefficient-of-expansion properties.1.2 The values stated in inch-pound units are t
4、o be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the
5、 user of this standard to become familiarwith all hazards including those identified in the appropriateSafety Data Sheet(SDS)for this product/material as providedby the manufacturer,to establish appropriate safety and healthpractices,and determine the applicability of regulatory limi-tations prior t
6、o 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 SpecificationsE228 Test Method for Linear Thermal Expansion of SolidMaterials With a Push-Rod DilatometerE1473
7、Test Methods for Chemical Analysis of Nickel,Co-balt and High-Temperature Alloys3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 The terms given in Table 1 shall apply.4.Ordering Information4.1 Orders for material under this specification shouldinclude the following information:
8、4.1.1 AlloyName or UNS number(see Table 2).4.1.2 ASTM designation and year of issue.4.1.3 ConditionSee 6.1 and Appendix X1.4.1.4 FinishSee Appendix X1.4.1.5 DimensionsThickness,width,and length.4.1.6 Quantity.4.1.7 Optional Requirements:4.1.7.1 Sheet and StripWhether to be furnished in coil,incut st
9、raight lengths,or in random straight lengths.4.1.7.2 StripWhether to be furnished with commercial slitedge,square edge,or round edge.4.1.7.3 PlateWhether to be furnished specially flattened(see 7.7);also how plate is to be cut(see 7.2.1 and 7.3.2).4.1.8 Fabrication DetailsNot mandatory but helpful t
10、othe manufacturer:4.1.8.1 Welding or BrazingProcess to be employed.4.1.8.2 PlateWhether material is to be hot-formed.4.1.9 CertificationState if certification or a report of testresults is required(see Section 15).4.1.10 Samples for Product(Check)AnalysisWhethersamples should be furnished(see 5.2).4
11、.1.11 Purchaser InspectionIf the purchaser wishes towitness the tests or inspection of material at the place ofmanufacture,the purchase order must so state indicating whichtests or inspections are to be witnessed(see Section 13).5.Chemical Composition5.1 The material shall conform to the requirement
12、s as tochemical composition prescribed in Table 2.5.2 If a product(check)analysis is performed by thepurchaser,the material shall conform to the product(check)analysis variations prescribed in Table 2.1This specification is under the jurisdiction of ASTM Committee B02 onNonferrous Metals and Alloys
13、and is the direct responsibility of SubcommitteeB02.07 on Refined Nickel and Cobalt and Their Alloys.Current edition approved June 1,2016.Published June 2016.Originallyapproved in 1996.Last previous edition approved in 2011 as B872 11.DOI:10.1520/B0872-06R16.2For referenced ASTM standards,visit the
14、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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United State
15、s1 6.Mechanical and Other Requirements6.1 Tensile PropertiesThe material after precipitationhardening shall conform to the tensile properties prescribed inTable 3.6.2 Coeffcient of Thermal Expansion:6.2.1 The mean coefficient of thermal expansion from 77F(25C)to 1292F(700C)shall not exceed 7.8 10 6i
16、n./in./F(14.0 106cm/cm/C).6.2.2 The inflection temperature shall not exceed 572F(300C).7.Dimensions and Permissible Variations7.1 Thickness and Weight:7.1.1 PlateThe permissible variation under the specifiedthickness and permissible excess in overweight shall notexceed the amounts prescribed in Table 4.7.1.1.1 For use with Table 4,plate shall be assumed toweigh 0.292 lb/in.3(8.08 g/cm3).7.1.2 Sheet and StripThe permissible variations in thick-ness of sheet and strip shall be as prescribed in Tab
