ASTM_A_493_-_16.pdf

Designation:A49316Standard Specification forStainless Steel Wire and Wire Rods for Cold Heading andCold Forging1This standard is issued under the fixed designation A493;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 specification covers cold-finished and hot-finishedstainless steel wire and wire rods for cold heading or coldforging for applications,such as fasteners,where corrosionresistance is a factor.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.2.Referenced Documents2.1 ASTM Standards:2A262 Practices for Detecting Susceptibility to IntergranularAttack in Austenitic Stainless SteelsA555/A555M Specification for General Requirements forStainless Steel Wire and Wire RodsA751 Test Methods,Practices,and Terminology for Chemi-cal Analysis of Steel Products3.Ordering Information3.1 It is the responsibility of the purchaser to specify allrequirements that are necessary for material ordered under thisspecification.Such requirements may include,but are notlimited to the following:3.1.1 Quantity(weight),3.1.2 Size(diameter),3.1.3 Type or UNS number(see Table 1),3.1.4 Name(wire or wire rods),3.1.5 ASTM designation and issue date,3.1.6 Condition(see 5.2),3.1.7 Coating(see 5.3),3.1.8 Coil size(inside and outside diameter),3.1.9 Special requirements,and3.1.10 Supplementary requirements.4.General Requirements for Delivery4.1 In addition to the requirements of this specification,allrequirements of the current editions of Specification A555/A555M shall apply.Failure to comply with the generalrequirements of Specification A555/A555M constitutes non-conformance with this specification.NOTE1Atypical ordering description is as follows:5000 lb(2268 kg)0.225 in.(5.72 mm)round Type 305 cold heading wire,lightly drafted,copper coated,32 in.(813 mm)max OD22 in.(559 mm)min ID,coils,ASTM Specification A493 XX.End use:hex head machine bolts.5.Manufacture5.1 Heat Treatment:5.1.1 Austenitic grades shall be annealed at 1800F(980C)minimum,so that grain boundary carbides enter into solution,and rapidly quenched to prevent grain boundary precipitationof carbides that would cause susceptibility to intergranularcorrosion.See Supplementary Requirements.5.1.2 Ferritic and martensitic grades shall be annealed tomeet the requirements for mechanical properties.5.2 Condition:5.2.1 Wire shall be furnished in one of the followingconditions:5.2.1.1 Lightly drafted(normal condition and need not bespecified if this is condition desired),5.2.1.2 Annealed,or5.2.1.3 Drafted to a specified tensile strength range(asagreed upon between purchaser and producer).5.2.2 Rods shall be furnished in the annealed condition,scale removed.5.3 Coatings and Lubricants:5.3.1 Coatings are necessary for most cold-heading orforming operations.An electroplated copper coating is oftenused.The following coatings may be specified:copper,lime,orspecial(as agreed upon between purchaser and producer).5.3.2 Lubricants are applied over the coating during thefinal drafting operation performed by the producer.Soap is1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloysand is the direct responsibility of SubcommitteeA01.17 on Flat-Rolled and Wrought Stainless Steel.Current edition approved March 1,2016.Published March 2016.Originallyapproved in 1963.Last previous edition approved in 2013 as A493 09(2013).DOI:10.1520/A0493-16.2For 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.*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 generally used.The following lubricants may be specified:soap,grease,or special(as agreed upon between purchaser andproducer).6.Chemical Requirements6.1 The steel shall conform to the requirements for chemicalcomposition specified in Table 1.6.2 Methods and practices relating to chemical analysisrequired by this specification shall be in accordance with TestMethods,Practices,and Terminology A751.7.Mechanical Requirements7.1 The material shall conform to the requirements as tomechanical properties specified in Table 2.Material can bemanufactured to tensile strength ranges other than those shownin Table 2.The producer should be consulted when material isrequired to tensile strength ranges other than thos