ASTM_B_639_-_02_2013.pdf

Designation:B63902(Reapproved 2013)Standard Specification forPrecipitation Hardening Cobalt-Containing Alloys(UNSR30155 and UNS R30816)Rod,Bar,Forgings,and ForgingStock for High-Temperature Service1This standard is issued under the fixed designation B639;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.1.Scope1.1 This specification covers hot-and cold-worked precipi-tation hardenable cobalt-containing alloys(UNS R30155 andUNS R30816)rod,bar,forgings,and forging stock for high-temperature service.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 appropriateMaterial Safety Data Sheet(MSDS)for this product/materialas provided by the manufacturer,to establish appropriatesafety and health practices,and determine the applicability ofregulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2B880 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,Cobalt,and High-Temperature Alloys3.Terminology3.1 Definitions of Terms Specific to This Standard: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 Name or UNS Number(see Table 1).4.1.2 ASTM Designation,including year of issue.4.1.3 Condition(temper)(Table 4).4.1.4 SectionRod or bar(round,rectangle,square,hexagon,octagon).4.1.4.1 Forging(sketch or drawing).4.1.5 Dimensions,including length.4.1.6 Quantity(mass or number of pieces).4.1.7 Forging stockSpecify if material is stock for reforg-ing.4.1.8 Finish.4.1.9 CertificationState if certification or a report of testresults is required(Section 15).4.1.10 Samples for Product(Check)AnalysisWhethersamples for product(check)analysis should be furnished(9.2).4.1.11 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(Section 13).5.Chemical Composition5.1 The material shall conform to the chemical compositionlimits specified in Table 1.5.2 If a product(check)analysis is performed by thepurchaser,the material shall conform to the product(check)analysis variations per Specification B880.1This 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.*New designation established in accordance with Practices E527 and SAEJ1086.Practice for Numbering Metals and Alloys(UNS).Current edition approved Feb.1,2013.Published February 2013.Originallyapproved in 1970.Last previous edition approved in 2008 as B639 02(2008).DOI:10.1520/B0639-02R13.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 6.Mechanical Requirements6.1 Tensile and Hardness RequirementsThe material shallconform to the requirements for tensile and hardness propertiesin Table 2.6.2 Stress-Rupture RequirementsThe material shall con-form to the requirements for stress-rupture properties in Table3.7.Dimensions and Permissible Variations7.1 Diameter,Thickness,or WidthThe permissible varia-tions from the specified dimensions of cold-worked rod and barshall be as prescribed in Table 5,and of hot-worked rod and baras prescribed in Table 6.7.1.1 Out-of-RoundCold-worked and hot-worked rod,allsizes,in straight lengths,shall not be out-of-round by morethan one half the total permissible variations in diameter shownin Table 5 and Table 6,except for h