ASTM_B_637_-_16.pdf

Designation:B63716Standard Specification forPrecipitation-Hardening and Cold Worked Nickel Alloy Bars,Forgings,and Forging Stock for Moderate or HighTemperature Service1This standard is issued under the fixed designation B637;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year 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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This specification2covers hot-and cold-workedprecipitation-hardenable nickel alloy rod,bar,forgings,andforging stock for moderate or high temperature service(Table1).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 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 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 to use.2.Referenced Documents2.1 ASTM Standards:3B880 Specification for General Requirements for ChemicalCheck Analysis Limits for Nickel,Nickel Alloys andCobalt AlloysE8 Test Methods for Tension Testing of Metallic MaterialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE139 Test Methods for Conducting Creep,Creep-Rupture,and Stress-Rupture Tests of Metallic MaterialsE1473 Test Methods for Chemical Analysis of Nickel,Co-balt and High-Temperature Alloys3.Terminology3.1 Definitions:3.1.1 bar,nmaterial of rectangular(flats),hexagonal,octagonal,or square solid section in straight lengths.3.1.2 rod,nmaterial of round solid section furnished instraight lengths.4.Ordering Information4.1 It is the responsibility of the purchaser to specify allrequirements that are necessary for material ordered under thisspecification.Examples of such requirements include,but arenot limited to,the following:4.1.1 Alloy(Table 1).4.1.2 Condition(temper or cold worked)(Tables 2 and 3and 6.1).4.1.3 ShapeRod or bar(round,rectangle,square,hexagon,octagon).4.1.3.1 Forging(sketch or drawing).4.1.4 Dimensions,including length.4.1.5 Quantity(mass or number of pieces).4.1.6 Forging StockSpecify if material is stock for reforg-ing.4.1.7 Finish.4.1.8 CertificationState if certification is required(Sec-tion 15).4.1.9 Samples for Product(Check)AnalysisWhethersamples for product(check)analysis shall be furnished(9.2).4.1.10 Purchaser InspectionIf the purchaser wishes towitness tests or inspection of material at the place ofmanufacture,the purchase order must so state indicating whichtests or inspections are to be witnessed(Section 13).5.Chemical Composition5.1 The material shall conform to the requirements as tochemical composition prescribed in Table 1.1This specification is under the jurisdiction of ASTM Committee B02 onNonferrous Metals and Alloys and is the direct responsibility of SubcommitteeB02.07 on Refined Nickel and Cobalt and Their Alloys.Current edition approved Oct.1,2016.Published October 2016.Originallyapproved in 1970.Last previous edition addition approved in 2015 as B637 15.DOI:10.1520/B0637-16.2For ASME Boiler and Pressure Vessel Code applications,see related Specifi-cation SB-637 in Section II of that Code.3For 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.*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 States1 5.2 If a product(check)analysis is performed by thepurchaser,the material shall conform to the product(check)analysis variations prescribed in Specification B880.6.Mechanical Properties6.1 Unless otherwise specified,the material shall be sup-plied in the cold worked or solution treated condition,suitablefor subsequent age hardening.6.2 The cold worked or solution treated material shall becapable of meeting the mechanical property requirements ofTable 3,and the stress rupture requirements of Table 4(exceptalloys UNS N07022,N09925 and N07725),following theprecipitation hardening treatment described in Table 2.6.3 When the material is to be supplied in the cold workedor solution treated plus aged condition,the requirements ofTable 3 and Table 4(except alloys UNS N07022,N09925 andN07725)shall apply,with the precipitation hardening treat-ment of Table 2,or as agreed upon between