ASTM A711 A711M-2017 Standard Specification for Steel Forging Stock《钢锻件的标准规格》.pdf
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1、Designation: A711/A711M 17Standard 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 in parenthe
2、ses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers cast carbon and alloy steelingots and strand castings, semi-wrought ingots and strandcastings and rolled or forged blooms, bil
3、lets, 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 t
4、he 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, 112 in. 4 cm; width,more tha
5、n twice the 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 a
6、re provided. 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. Combi
7、ningvalues from the 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.1.6 This international standard was developed in accor-dance with internationally recognized principles on stand
8、ard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2A29/A29M Specification for General Requirement
9、s for SteelBars, Carbon and Alloy, Hot-WroughtA275/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
10、ofSteelE112 Test Methods for Determining Average 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 following
11、information in addition to those specified in SpecificationA788/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 specif
12、ication shall conform tothe requirements of Specification A788/A788M, which out-lines additional ordering information, manufacturingrequirements, testing and retesting methods and procedures,marking, certification, product analysis variations, and addi-tional supplementary requirements.1This specifi
13、cation is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.06 on Steel Forgings and Billets.Current edition approved Nov. 1, 2017. Published November 2017. Originallyapproved in 1974. Last previous edition ap
14、proved in 2012 as A711/A711M 07(2012). DOI: 10.1520/A0711_A0711M-17.2For 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 w
15、ebsite.*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 StatesThis international standard was developed in accordance with internationally recognized principles on standardizati
16、on established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.13.2.1 If the requirements of this specification are in conflictwith the requirements of Specifica
17、tion 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.4.2 Reduction from IngotExcept as otherwise agreed inaccordance with Supplementary Requirement S3.2, the mat
18、e-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 indefinite time, exposure to all climaticconditions without developing any external or internal cracks.The method of cooling
19、 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 purch
20、aser, the manufacturer shall be respon-sible only for carrying out those specific operations but shallnot be responsible for cracks that may develop before materialis subjected to reheating.5. Chemical Composition5.1 The chemical composition shall conform to the require-ments specified in the purcha
21、se order or the individual productspecification. For convenience the grades commonly specifiedfor carbon and alloy steel, blooms, billets, or slabs are shownin Table 1 and Table 2 of the latest issue of SpecificationA29/A29M. Blooms, billets, or slabs may be ordered to thesegrade designations, and w
22、hen so ordered shall conform to thespecified limits by heat analysis.5.2 Heat Analysis:5.2.1 An analysis of each heat of steel shall be made inaccordance with Specification A788/A788M.5.3 Product Analysis:5.3.1 A product analysis may be made by the purchaser inaccordance with Specification A788/A788
23、M.5.3.2 To indicate adequately the composition of a heat orlot, samples selected to represent the heat as fairly as possibleshall be taken midway between center and outside of thematerial from a minimum number of pieces as follows:Lots Number of Pieces15 tons 13.5 t or less 4Over 15 tons 13.5 t 65.3
24、.3 If the number of pieces from cast or heat is less thanthe number of samples specified in 5.3.2, one sample shall betaken from each piece.5.3.4 When chips are taken by drilling, the approximatediameter of the drill used shall be as follows:Area of Cross Section to Be Sampled,in.2cm2Approximate Dri
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