ASTM_F_541_-_12.pdf

Designation:F54112Standard Specification forAlloy Steel Eyebolts1This standard is issued under the fixed designation F541;the number immediately following the designation indicates the year of originaladoption or,in the case of revision,the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1.Scope*1.1 This specification covers forged,quenched andtempered,alloy steel threaded eyebolts with improved tough-ness properties and intended primarily for low temperatureapplications.The eyebolts are chemically and metallurgicallyconstituted to produce a low transition temperature to minimizebrittle failure.Maximum thread size is 2.500 in.(63.50 mm).1.2 The eyebolts are furnished in two types,as follows:1.2.1 Type 1Straight Shank Eyebolt.1.2.2 Type 2Shoulder Eyebolt.1.3 The values stated in inch-pound units are to be regardedas the standard.The values in parentheses are for informationonly.2.Referenced Documents2.1 ASTM Standards:2A370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA574 Specification forAlloy Steel Socket-Head Cap ScrewsA751 Test Methods,Practices,and Terminology for Chemi-cal Analysis of Steel ProductsE10 Test Method for Brinell Hardness of Metallic MaterialsE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE112 Test Methods for Determining Average Grain SizeE340 Test Method for Macroetching Metals and AlloysE709 Guide for Magnetic Particle TestingF606 Test Methods for Determining the Mechanical Proper-ties of Externally and Internally Threaded Fasteners,Washers,Direct Tension Indicators,and RivetsF1470 Practice for Fastener Sampling for Specified Me-chanical Properties and Performance Inspection2.2 ASME Standards:3B1.1 Unified Screw ThreadsB18.15 Forged EyeboltsB18.24 Part Identifying Number(PIN)Code System Stan-dard for B18 Fastener Products3.Ordering Information3.1 Orders for eyebolts under this specification shall includethe following information to adequately describe the part:3.1.1 ASTM specification number and date of issue,3.1.2 Name of part(alloy steel eyebolts),3.1.3 Regular or shoulder pattern(8.1),3.1.4 Size(nominal diameter and threads),3.1.5 Number of pieces,3.1.6 Certification or test reports(if required)(14.1),3.1.7 Additional requirements(if required),and3.1.8 Supplementary requirements(if required).3.1.9 For establishment of a part identifying system,seeASME B18.24.4.Materials and Manufacture4.1 Melting ProcessThe steel shall be made to a fine-grainpractice using a melting process yielding a product conformingto the requirements of this specification.4.2 ForgingEyebolts shall be forged without welds.4.3 Heat TreatmentThe eyebolts shall be quenched andtempered in accordance with proper practice to yield a productconforming to the requirements of this specification.4.4 MachiningThe eyebolt shall be machined prior to orafter heat treatment at the manufacturers option.5.Chemical Composition5.1 LimitsThe eyebolts shall be manufactured from steelshaving a heat analysis conforming to the requirements in Table1.5.2 Product Analysis:1This specification is under the jurisdiction of ASTM Committee F16 onFasteners and is the direct responsibility of Subcommittee F16.02 on Steel Bolts,Nuts,Rivets and Washers.Current edition approved April 1,2012.Published April 2012.Originallyapproved in 1977.Last previous edition approved in 2004 as F541 041.DOI:10.1520/F0541-12.2For 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.3Available from American Society of Mechanical Engineers(ASME),ASMEInternational Headquarters,Three Park Ave.,New York,NY 10016-5990,http:/www.asme.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.United States1 5.2.1 The purchaser reserves the right to conduct productanalyses on the finished eyebolts or request the manufacturer toconduct product analyses tests.The composition thus deter-mined shall conform to the requirements specified in Table 1subject to the product analysis tolerances.5.2.2 Chemical analyses shall be performed in accordancewith Test Methods,Practices,and Terminology A751.6.Metallurgical Requirements6.1 Grain Size:6.1.1 RequirementsThe finished eyebolts shall have anapparent heat-treated grain size of Test Methods E112 No.5 orfiner.6.1.2 SpecimenGrain size shall be rated on specimenstaken from the eyebolt after final heat treatment.6.1.3 Test MethodGrain size on the finished eyebolt shallbe determined in accordance with Test Methods E112.6.2 Macroetch Test:6.2.1 RequirementWhen ground and etched,the crosssection of the eyebolt shall be free of