1、Designation:A711/A711M07(Reapproved 2012)Standard Specification forSteel Forging Stock1This standard is issued under the fixed designation A711/A711M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A number
2、in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers cast carbon and alloy steelingots and strand castings,semi-wrought ingots and strandcastings and rolled or forged bloom
3、s,billets,and slabs forforging.1.2 Blooms,billets,and slabs are semi-finished steelproducts,hot rolled or forged to approximate cross-sectionaldimensions.Blooms and billets may be square,round,octagonal,or rectangular in section;slabs are rectangular.Although no invariable rule prevails between the
4、terms bloomsand billets,and they are frequently used interchangeably,thefollowing size distinctions are in general use.1.2.1 BloomsCross-sectional area greater than 36 in.2230 cm2.1.2.2 BilletsMaximum cross-sectional area 36 in.2230 cm2.1.2.3 SlabsMinimum thickness,112in.4 cm;width,more than twice t
5、he thickness;and generally a cross-sectionalarea of not less than 16 in.2100 cm2.1.2.4 Ingots either top or bottom poured or secondaryremelted are covered.1.2.5 Strand castings with or without additional reductionare covered.1.3 Supplementary requirements(S1 to S19)of an optionalnature are provided.
6、They shall apply only when specified bythe purchaser.1.4 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from t
7、he two systems may result in non-conformancewith the standard.1.5 Unless the order specifies the“M”specification,thematerial shall be furnished to the inch-pound units.2.Referenced Documents2.1 ASTM Standards:2A29/A29M Specification for Steel Bars,Carbon and Alloy,Hot-Wrought,General Requirements fo
8、rA275/A275M Practice for Magnetic Particle Examination ofSteel ForgingsA388/A388M Practice for Ultrasonic Examination of SteelForgingsA788/A788M Specification for Steel Forgings,General Re-quirementsE45 Test Methods for Determining the Inclusion Content ofSteelE112 Test Methods for Determining Avera
9、ge Grain SizeE381 Method of Macroetch Testing Steel Bars,Billets,Blooms,and Forgings3.Ordering Information and General Requirements3.1 When this specification is to be applied to an inquiry,contract,or order,the purchaser shall furnish the followinginformation in addition to those specified in Speci
10、ficationA788/A788M:3.1.1 The grade of material desired.3.1.2 Product form restrictions(for example,ingots,strandcastings,billets)if any,and3.1.3 Applicable supplementary requirements.3.1.4 Surface condition.3.2 Material supplied to this specification shall conform tothe requirements of Specification
11、 A788/A788M,which out-linesadditionalorderinginformation,manufacturingrequirements,testing and retsting methods and procedures,marking,certification,product analysis variations,and addi-tional supplementary requirements.3.2.1 If the requirements of this specification are in conflictwith the requirem
12、ents of Specification A788/A788M,therequirements of this specification shall prevail.4.Materials and Manufacture4.1 DiscardSufficient discard shall be made to securefreedom from piping and undue segregation.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel
13、and Related Alloysand is the direct responsibility of SubcommitteeA01.06 on Steel Forgings and Billets.Current edition approved May 1,2012.Published May 2012.Originallyapproved in 1974.Last previous edition approved in 2007 as A711/A711M 07.DOI:10.1520/A0711_A0711M-07R12.2For referenced ASTM standar
14、ds,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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959
15、.United States1 4.2 Reduction from IngotExcept as otherwise agreed inaccordance with Supplementary Requirement S3.2,the mate-rial shall be made from product having at least two times thecross-sectional area of the material.4.3 StabilityMaterial shall be furnished in a condition towithstand,for an in
16、definite time,exposure to all climaticconditions without developing any external or internal cracks.The method of cooling or of treatment before shipment shall beoptional with the manufacturer,but he shall be responsible(inthe same manner as for defects disclosed after delivery)forcracks that may develop before material is subjected toreheating.When specific stability treatment of material isspecified by the purchaser,the manufacturer shall be respon-sible only for carrying out those specific op
