ASTM-A686-Standard-Specification-for-Carbon-Tool-Steel

Designation:A 686-92An Amencan Natonal standardAMERICAN SOCIETY FOR TESTING AND MATERIALS100 Barr Habor Dr.,West Conshohocken,PA 19428Reprnted from the Annual Book ofASTM Standands.Copyright ASTMStandard Specification forTool Steel,Carbon'This standard is issued under the fixed designation A 686;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 (e)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.ScopeFed.Std.No.123 Marking for Shipment (Civil Agencies)61.1 This specifi cation covers the chemical,mechanical,andFed.Std.No.183 Continuous Identifi cation Marking ofphysical requirements for available wrought carbon tool steelIron and Steel Productsproducts.3.Classifi cation1.2 These products,which include hot-or cold-fi nished bar,plate,sheet,rod,wire,or forgings,are normally fabricated into3.1 Material in accordance with this specification is classi-tools,dies,or fixtures.The selection of a material for afied by chemical composition.Types correspond to respectiveparticular application will depend upon design,service condi-AISI designations.tions,and desired properties.3.1.1 Carbon Tool Steels,Identification W-Types W1,W2,1.3 The values stated in inch-pound units are to be regardedand W5 are often referred to as water hardening tool steelsas the standard.The values given in parentheses are providedsince they require rapid quenching rates to attain the necessaryfor infommation onlyhardness.Except in very small sizes they will harden with ahard case and a soft core.2.Referenced Documents3.1.1.1 Type WI is an unalloyed carbon steel available in2.1 ASTM Standards:several carbon ranges.A 370 Test Methods and Defi nitions for Mechanical Testing3.1.1.2 Type W2 is characterized by a nominal vanadiumof Steel Products2content of 0.25%and is also available in several carbonA 388/A 388M Practice for Ultrasonic Examination ofranges.Heavy Steel Forgings33.1.1.3 Type W5 is characterized by a nominal chromiumA 561 Practice for Macroetch Testing of Tool Steel Bars3content of 0.50 %A 700 Practices for Packaging,Marking,and Loading3.1.1.4 A suffix following the type designation is added toMethods for Steel Products for Domestic Shipment'denote the minimum carbon content of the carbon range to beE3 Methods of Preparation of Metallographic Specimensspecifi ed.E 30 Test Methods for Chemical Analysis of Steel,Cast3.1.2 Types W1 and W2 are further classified by qualityIron,Open-Hearth Iron,and Wrought Iron3levels,namely,Grade A and Grade C.E45 Practice for Determining the Inclusion Content of3.1.2.1 Grade A is sometimes referred to as Extra or Special.Steel4It is controlled for hardenability;the chemical composition isE 59 Practice for Sampling Steel and Iron for Determinationheld to closest limits;and i