ASTM_A_805_-_A_805M_-_09_2016.pdf

Designation:A805/A805M09(Reapproved 2016)Standard Specification forSteel,Flat Wire,Carbon,Cold-Rolled1This standard is issued under the fixed designation A805/A805M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript 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 carbon steel flat wire in coilsor cut lengths.Flat wire is classified as a cold-rolled section,rectangular in shape,0.500 in.12.7 mm or less in width andunder 0.250 in.6.35 mm in thickness.1.2 Low-carbon steel flat wire is produced from steelcompositions with a maximum carbon content of 0.25%bycast or heat analysis.1.3 Carbon spring steel flat wire is produced to a carbonrange in which the specified or required maximum is over0.25%by cast or heat analysis.1.3.1 Two types of carbon spring steel flat wire are pro-duced:1.3.1.1 Untempered cold-rolled carbon spring steel flatwire,produced to several desirable combinations of propertiesand1.3.1.2 Hardened and tempered carbon spring steel wire.1.4 Definite application flat wire is a product developed fora specific application and may be specified only by size anddescriptive name.1.5 The values stated in either inch-pound units or SI unitsare to be regarded as standard.Within the text,the SI units areshown in brackets.The values stated in each system are notexact equivalents;therefore,each system must be used inde-pendently of the other.Combining values from the two systemsmay result in non-conformance with this specification.2.Referenced Documents2.1 ASTM Standards:2A370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA510 Specification for General Requirements for Wire Rodsand Coarse Round Wire,Carbon SteelA510M Specification for General Requirements for WireRods and Coarse Round Wire,Carbon Steel(Metric)(Withdrawn 2011)3A751 Test Methods,Practices,and Terminology for Chemi-cal Analysis of Steel ProductsE45 Test Methods for Determining the Inclusion Content ofSteelE112 Test Methods for Determining Average Grain SizeE140 Hardness Conversion Tables for Metals RelationshipAmong Brinell Hardness,Vickers Hardness,RockwellHardness,Superficial Hardness,Knoop Hardness,Sclero-scope Hardness,and Leeb Hardness2.2 Military Standard:4MIL-STD-129 Marking for Shipment and Storage2.3 Federal Standard:4Fed.Std.No.123 Marking for Shipment(Civil Agencies)2.4 SAE Standard:5Recommended Practice SAE J 419 Methods of MeasuringDecarburization3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 annealingthe process of heating to and holding at asuitable temperature and then cooling at a suitable rate,forsuch purposes as reducing hardness,facilitating cold working,producing a desired microstructure,or obtaining desiredmechanical,physical,or other properties.3.1.2 batch annealingannealing that is generally per-formed in large cylindrical bell type or large rectangular box orcar-type furnaces.The product is protected from scaling anddecarburization by the use of a controlled atmosphere thatenvelops the charge in an inner chamber sealed to prevent theinflux of air or products of combustion.The coils or bundles1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloysand is the direct responsibility of SubcommitteeA01.19 on Steel Sheet and Strip.Current edition approved May 1,2016.Published May 2016.Originallyapproved in 1982.Last previous edition approved in 2009 as A805/A805M 09.DOI:10.1520/A0805_A0805M-09R16.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from Standardization Documents Order Desk,DODSSP,Bldg.4,SectionD,700RobbinsAve.,Philadelphia,PA19111-5098,http:/www.dodssp.daps.mil.5Available from Society of Automotive Engineers(SAE),400 CommonwealthDr.,Warrendale,PA 15096-0001,http:/www.sae.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 are heated to a temperature in the vicinity of the lower criticaltemperature for the grade of steel,and held at that temperaturefor a definite length of time;after which the steel is allowed tocool slowly to room temperature.The time of holding at theannealing temperature varies with the grade of the steel and thedesired degree of softness.3.1.3 continuous or strand annealingannealing that con-sists of passing a number of individual strands of flat wirecontinuously through either a muffle