1、Designation:F153711Standard Specification forWrought Cobalt-28Chromium-6Molybdenum Alloys forSurgical Implants(UNS R31537,UNS R31538,and UNSR31539)1This standard is issued under the fixed designation F1537;the number immediately following the designation indicates the year oforiginal adoption or,in
2、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.Scope*1.1 This specification covers the chemical,mechanical,andmetallurgicalrequirementsforthreewro
3、ughtcobalt-28chromium-6molybdenum alloys used for surgical implants.The properties specified apply specifically to wrought bar,rod,and wire.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 provide
4、d for information onlyand are not considered standard.2.Referenced Documents2.1 ASTM Standards:2E8/E8M Test Methods for Tension Testing of Metallic Ma-terialsE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance wi
5、th SpecificationsE112 Test Methods for Determining Average Grain SizeE354 Test Methods for Chemical Analysis of High-Temperature,Electrical,Magnetic,and Other Similar Iron,Nickel,and Cobalt AlloysF75 Specification for Cobalt-28 Chromium-6 MolybdenumAlloy Castings and Casting Alloy for Surgical Impla
6、nts(UNS R30075)F799 Specification for Cobalt-28Chromium-6MolybdenumAlloy Forgings for Surgical Implants(UNS R31537,R31538,R31539)2.2 Aerospace Material Specifications:3AMS 2248 Chemical CheckAnalysis Limits,Corrosion andHeat Resistant Steels and Alloys,Maraging and OtherHighly-Alloyed Steels,and Iro
7、n AlloysAMS 2269 Chemical Check Analysis Limits,Nickel,NickelAlloys and Cobalt AlloysAMS 2630 Inspection,Ultrasonic Product over 0.5 Inch(12.7 mm)Thick2.3 ISO Standards:4ISO 583212 Implants for SurgeryMetallic MaterialsPart 12:Wrought Cobalt-Chromium-Molybdenum AlloyISO 6892 Metallic Materials Tensi
8、le Testing at AmbientTemperatureISO 9001 Quality Management SystemsRequirements3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 lotthe total number of mill products produced fromthe same melt heat under the same conditions at essentially thesame time.4.Ordering Information4.1 In
9、quiries and orders for material under this specificationshall include the following information:4.1.1 Quantity,4.1.2 ASTM designation,alloy number,and date of issue,4.1.3 Mechanical properties(See Section 7),4.1.4 Form(bar,rod or wire),4.1.5 Applicable dimensions including size,thickness,width,and l
10、ength(exact,random,or multiples)or drawingnumber,4.1.6 Condition(See Section 5),4.1.7 Special tests(if any),and4.1.8 Other requirements.5.Materials and Manufacture5.1 Product shall be furnished as specified below:1This specification is under the jurisdiction of ASTM Committee F04 onMedical and Surgi
11、cal Materials and Devicesand is the direct responsibility ofSubcommittee F04.12 on Metallurgical Materials.Current edition approved Nov.15,2011.Published December 2011.Originallyapproved in 1994.Last previous edition approved in 2008 as F1537 08.DOI:10.1520/F1537-11.2For referenced ASTM standards,vi
12、sit 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.3Available from Society of Automotive Engineers(SAE),400 CommonwealthDr.,Warrendale,PA 15096-0001,h
13、ttp:/www.sae.org.4Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.*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.Un
14、ited States1 5.1.1 The annealed condition is typically supplied as a hotrolled and annealed product.5.1.2 The hot worked condition is typically supplied as a hotrolled and unannealed product.5.1.3 The warm worked condition is typically supplied as athermomechanically processed product to achieve a s
15、train-hardened structure.6.Chemical Requirements6.1 The cobalt-28chromium-6molybdenum alloys shall con-form to the chemical requirements prescribed in Table 1.Thesupplier shall not ship material that is outside the limitsspecified in Table 1 for the applicable alloy.6.1.1 Requirements for the major
16、and minor elementalconstituents are listed in Table 1.Also listed are importantresidual elements.Analysis for elements not listed in Table 1 isnot required to verify compliance with this specification.6.2 Product AnalysisThe product analysis is either for thepurpose of verifying the composition of a heat or lot or todetermine variations in the composition within the heat.6.2.1 Acceptance or rejection of a heat or lot of materialmay be made by the purchaser on the basis of this productanalysis.6.